4.2.2.4.pdbase ii user manual_eng.pdf

Techimp PDBaseII

OPERATOR’S MANUAL

Techimp PDBaseII operator’s manual for software release 1.01.09

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THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF TECHIMP SYSTEMS SRL NOT DISCLOSABLE, NOT REPRODUCIBLE. ALL RIGHTS RESERVED.

********** WARNING **********

THE USERS OF THIS TEST EQUIPMENT HAVE THE RESPONSABILITY TO FOLLOW THE SAFETY OPERATING INSTRUCTIONS AND THE PROPER USE PROCEDURES

DESCRIBED IN THIS MANUAL

Techimp Systems S.r.l. provides information on its products and associated hazards.

However, Techimp Systems S.r.l. does not assume any responsibility for the

after-sale operation and safety practices.

ALL PERSONNEL WORKING WITH OR EXPOSED TO THIS EQUIPMENT MUST TAKE PRECAUTIONS TO PROTECT THEMSELVES AGAINST POSSIBLE SERIOUS AND/OR FATAL

BODILY INJURY.

Techimp PDBaseII operator’s manual

for software release 1.01.09


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WEEE and RoHS announcement This product complies with the WEEE European Directive (2002/96/EC) marking re-quirements. The affixed label indicates that you must not discard this electri-cal/electronic product in domestic household waste. PRODUCT CATEGORY: with reference to the equipment types in the WEEE Directive Annex I, this product is classed as Category 9 (“Monitoring and Control Instrumenta-tion”) product. DO NOT DISPOSE IN DOMESTIC HOUSEHOLD WASTE! To return unwanted products, contact the manufacturer at www.techimp.com or your lo-cal sales office or distributor. On the basis of the above-mentioned classification (Category 9), this product is not in-cluded in the field of application of the RoHS European Directive (2002/95/EC). Techimp is strongly committed in environment protection and material recycling. To pur-sue this commitment, Techimp follows engineering guidelines to facilitate recycling and chooses RoHS compliant components.


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Declaration of calibration Techimp Systems S.r.l. hereby declares under its sole responsibility that the Techimp PDBaseII product has been verified, tested and calibrated at its facility and

COMPLIES with the requested specifications (See Annex A). Techimp Systems S.r.l. recommends to renew the calibration of the Techimp PDBaseII with yearly frequency.




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TABLE OF CONTENTS

1 SAFETY AND PRECAUTION ............................................................................................................. 7

1.1 TERMS AND SYMBOLS IN THIS MANUAL ............................................................................................ 7 1.2 PRECAUTIONS AND SECURITY MEANS.............................................................................................. 8

2 GENERALITY ...................................................................................................................................... 9

2.1 INTRODUCTION .............................................................................................................................. 9 2.2 GENERAL SPECIFICATIONS ........................................................................................................... 10 2.3 PROHIBITIONS.............................................................................................................................. 11 2.4 UNPACKING AND INSPECTION........................................................................................................ 11 2.5 INSTRUCTIONS FOR CLEANING ...................................................................................................... 12

3 TECHIMP PDBASEII ACQUISITION UNIT AND ITS CONNECTIONS............................................ 13

3.1 TECHIMP PDBASE II ACQUISITION UNIT........................................................................................ 13 3.2 CONNECTING THE ACQUISITION UNIT ............................................................................................. 15 3.3 DEFAULT NETWORK SETTINGS AND RESTOSTORING PROCEDURE .................................................... 16

4 TECHIMP PDBASEII CONTROL SOFTWARE 1.01.09 MANUAL................................................... 17

4.1 PRELIMINARY ACTIONS BEFORE THE USAGE................................................................................... 17 4.1.1 CONTROL UNIT MINIMUM REQUIREMENTS .................................................................................. 17 4.1.2 SOFTWARE INSTALLATION ........................................................................................................ 18 4.1.3 CONTROL UNIT IP CONFIGURATION........................................................................................... 21 4.1.4 CONFIGURE THE NETWORK PARAMETER OF ACQUISITION UNIT ................................................... 23 4.1.5 CONNECTING TO THE ACQUISITION UNIT.................................................................................... 23

4.2 CONNECTION ERRORS.................................................................................................................. 23 4.3 CONTROLLING THE ACQUISITION UNIT............................................................................................ 25

4.3.1 TOP BAR ................................................................................................................................. 25 4.3.2 STREAMING PANEL .................................................................................................................. 26 4.3.3 ACQUISITION PARAMETERS PANEL ............................................................................................ 27 4.3.4 MULTIPLE TAB WINDOW............................................................................................................ 29 4.3.5 PRE PROCESSING TOOL ........................................................................................................... 31 4.3.6 STATUS BAR............................................................................................................................ 33 4.3.7 SYNCHRONIZATION WINDOW .................................................................................................... 34 4.3.8 MAP FILTERING WINDOW .......................................................................................................... 35 4.3.9 CALIBRATION WINDOW ............................................................................................................. 36 4.3.10 MENU BAR .......................................................................................................................... 37

5 OPTIONAL DEVICES........................................................................................................................ 42

5.1 TECHIMP MULTIPLEXER ................................................................................................................ 42

6 ANNEX A: DATA SHEET.................................................................................................................. 46

TECHIMP PDBASEII SYSTEM...................................................................................................................... 46

7 ANNEX B: PD PATTERN LIBRARY................................................................................................. 50

INTERNAL PD ........................................................................................................................................... 50 SURFACE PD............................................................................................................................................ 53 CORONA PD............................................................................................................................................. 55


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1 SAFETY AND PRECAUTION The Techimp PDBaseII system described in this manual can be used when directly or indirectly connected to high voltage equipment. This dictates the use of caution when installing, operating and/or servicing this equipment. OBSERVE ALL SAFETY PRECAUTIONS LISTED BELOW. FAILURE TO DO SO MAY RESULT IN INJURY OR DEATH. 1.1 TERMS AND SYMBOLS IN THIS MANUAL

CAUTION! statements identify conditions or practices that could result in damage to the equipment or other property.

WARNING! statements identify conditions or practices that could result in injury or loss of life.

This symbol, wherever it appears on the system, alerts you to the presence of not insulated dangerous voltages – voltages that may be sufficient to risk of electrical shock.

This symbol, wherever it appears on the test system, alerts you to impor-tant operating and maintenance instructions in the accompanying literature. Read the manual.


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1.2 PRECAUTIONS AND SECURITY MEANS

WARNING! In order to avoid the insurgence of dangerous conditions regarding persons or things during installation, operation and maintenance of the Techimp PDBaseII, is required to read with care the whole manual before performing any operation with the system.

WARNING! The operators should observe the safety precautions listed below with particular attention. Failure in observing the precautions may result in seri-ous injuries or death.

Every operation in high voltage areas accessible to operators is allowed only to qualified and skilled personnel.

The Techimp PDBaseII system should be installed and serviced only by per-sonnel experienced in high voltage apparatuses and testing systems.

Service personnel should be instructed to observe all safety precautions as stated in the operating instructions, and to the high voltage standard safety pre-cautions. Failure to do so could result in serious injury.

To avoid the risk of shock and personal injury, disconnect every device from the AC mains and uninterruptible power sources (UPS) before doing any mainte-nance and cleaning operation.

Do not handle, install, or remove any component while the system is operating. Ensure that the high voltage on the equipment under test is off before doing it. Failure to observe these precautions can result in potential electric shock to per-sonnel, arcing, and damage to the connectors and, finally, to the system.

Each Techimp PDBaseII needs a good direct earth connection, provided using the appropriate ground termination located on each detection unit.

The output signal from sensors connected to the Techimp PDBaseII and the power frequency reference signal used for synchronization must be suitable for the input plugs specifications (allowable signal ranges). Each signal must also be connected with the appropriate terminations on each detection unit. Failure in fol-lowing the specifications can provoke damages to the acquisition unit.

Maximum operating temperature: 50°C is the upper limit temperature for the Te-chimp PDBaseII; the direct and continuous exposure to the sun light may cause the operating temperature to rise; if the real operating temperature can be higher than 50°C, a cooling system must be provided.




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2 GENERALITY This manual describes Techimp PDBaseII system. Its main purpose is to be a quick guide for the correct use of this measurement instrument. It also contains detailed in-formation about the instrument and the software, with their features and specifications. Refer to this manual for the correct installation and usage of the equipment for Partial Discharge (PD) diagnosis. 2.1 INTRODUCTION Quality control and reliability assessment on electrical systems are essential require-ments for power system apparatus. As a consequence, the demand of non-destructive diagnostic tests on electrical devices is constantly increasing. Nowadays, digital systems for PD measurements permit to obtain many diagnostic indi-cations about the insulating systems degradation. Many procedures are being devel-oped in order to interpret PD data and providing diagnostic indicators related to each different type of insulating system. In order to apply artificial intelligence processing techniques, as the Wavelet or the Fourier transforms applied to PD patterns, a selection of stochastic quantities is provided among the parameters that can be extracted from digital PD measurements. However, methods based on statistical quantities often fail in the presence of multiple PD sources related to physically different defects that contribute to a measured pattern, or in the presence of disturbances. In fact, statistical methods require the processed data to be homogeneous. In addition, a drawback that still affects evaluations based on PD measurements is the lack of markers which can be undoubtedly correlated with deg-radation/life/breakdown and, moreover, provide indications about the nature and harm-fulness of PD. It is often claimed, for example, that some electrical apparatus are able to withstand very large PD activities, while other ones fail in the presence of small PD dis-charges. These kinds of experimental evidences raise the doubts on the validity of PD as indicators of incoming degradation and failure. Some research studies have raised the problem of PD classification and identification as a prerequisite for any efficient diagnostic procedure, showing that different PD phe-nomena (i.e. PD pulses generated by different kinds of sources) can affect simultane-


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ously an insulation system and that the ones generating pulses with larger amplitude cannot be not necessarily the most harmful. Moreover, the assessment of the harmfulness of a PD phenomenon on complex electri-cal systems cannot be evaluated by a single measurement; the understanding of the time-behavior of the phenomenon require constant investigation in order to extrapolate the trend and set the best Condition-Based Maintenance program on the device under test. Techimp PDBaseII is provided with an Ethernet port and it can be locally and remotely controlled via TCP/IP communication protocol. The PD data can be achieved collecting not only PD pulse peak and phase (as it is done by the digital instrumentation com-monly available), but also the PD pulse waveforms, thus adding the information from pulse shapes. Techimp PDBaseII has been designed to collect a large number of PD pulses and separate them according to their waveform shape. To do this, the hardware is basically a ultra-wide band (UWB) acquisition system with large storage capabilities. Thanks to its fast sampling rate (up to 200 MS/s) and to its large memory, a considerable number of digitized PD pulse waveforms are available for further processing. Dedicated software, the PDBaseII control software, has been devised in order to man-age the steps of a measurement: Calibration of EUT system, PD streaming and acquisi-tion data, and pre-processing data. Another Techimp software module (PDProcessingII) allows deeper investigation and processing of the recorded PD data. 2.2 GENERAL SPECIFICATIONS At the final stage of production, the device undergoes several controls with the aim of assessing the correspondence to the technical specifications and the achievement of the expected safety level for the system operation. In order to maintain these conditions and to guarantee a safe service, the user must follow prescriptions contained in this in-struction manual. The system is not guaranteed to work properly during or after any catastrophic event (earthquake, flood, etc.) or socio-politic events as putsch, war, acts of God, etc. In case of any of these events the whole acquiring system should be controlled only by Te-chimp Systems S.r.l. personnel before operating it again.




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2.3 PROHIBITIONS

The following actions are prohibited: Open the enclosure of Techimp PDBaseII acquisition unit. Modify and replace any component inside the system with spare parts not provided by Techimp Systems S.r.l.

The non-observance of above prohibitions shall make the warranty null and void and re-leases the supplier from every responsibility for damages occurred to persons or things. If one of the above listed operations is considered to be absolutely necessary, please contact Techimp Systems S.r.l. 2.4 UNPACKING AND INSPECTION First inspect package exterior for evidence of rough handling in transit. If none, proceed to unpack carefully. After removing the components from its package, inspect it thor-oughly for damage.

IMPORTANT! In cases of damage due to rough handling in transit, notify the carrier immediately. If damage is evident from appearance of package, do not destroy or remove any of the packing material used. Carrier companies will usually not accept claims for damaged material unless they can inspect the damaged item and its associated packing material. Claims must be made promptly, within five days from the reception of goods.

Before connecting the power supply to the acquisition unit and to the other components of the system, it is necessary to check the correspondence between the value of the voltage available in the installation place and that reported on the plates attached to each component. If the supply voltages are different, the insertion of an auto-transformer should be required. We suggest to contact Techimp Systems S.r.l. in or-der to choose its right size. In the event of clearly visible damage to the test system or if it has been exposed for a long time to unfavorable environmental condition (excessive humidity, temperature out of range of safety storage), the system must be precautionary put out of service and as-sured against the possibility of an unintentional use. Contact, thus, the manufacturer to agree an appropriate procedure to put the system in service in safety condition.


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2.5 INSTRUCTIONS FOR CLEANING

• Disconnect the AC input cable from mains and clean the exterior part of the en-closure box using a soft cloth, slightly wet with water.

• Do not use solvents or abrasives.

• During cleaning operations be careful to avoid the penetration of even small amount of water or detergent liquid inside the electric components or in the elec-tric connections.

WARNING ! To avoid the risk of shock and personal injury, disconnect the device from the AC mains and uninterruptible power supply (UPS) before doing any main-tenance and cleaning operation.




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3 TECHIMP PDBASEII ACQUISITION UNIT AND ITS CONNECTIONS Techimp PDBaseII system consists of an acquisition unit and the related control soft-ware. For the technical specifications refer to the Annex A, where a description of the main characteristics of the acquisition unit is reported. The control software is described in detail in chapter 4. In the following sections an overview of the acquisition unit and its connection to the control unit (PC, laptop) is reported. 3.1 TECHIMP PDBASE II ACQUISITION UNIT Fig. 3.1 shows a picture of the acquisition unit. All the connectors and their use will be described in the following.

Fig. 3.1: Techimp PDBaseII acquisition unit.

The particular of the front side, of the acquisition unit, is reported in Fig. 3.2. It is possi-ble to note the PD channels, the analog and digital Synchronization channels and the fiber optic connectors.


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Antenna GPS plug is a PDBaseII option installed upon customer request; SP plug is the connector of the optional device multiplexer and EPS plug is a multiple power source with +/-5 V and +12 V in DC current study for the power supply of Techimp devices (e.g. LF and HF signal amplifier, notch LF amplifier, etc.). Ethernet reset button allows the network parameters of PDBaseII to be reset. Techimp can also provide the Ethernet media converter for the fiber optic decoupling allowing the galvanic separation between the operator and the equipment under test.

Fig. 3.2: Front side of the acquisition unit

The particulars of the rear side, of the acquisition unit, are reported in Fig. 3.3. It is pos-sible to note the start button, the power supply plug and the ground connection.

Fig. 3.3: Rear side of the acquisition unit

CAUTION ! 50° C is the upper limit of environment temperature for Techimp PDBaseII; the direct and continuous exposure to the sun light is able to cause the operating temperature rise; if the real operating temperature will become higher than 50°C a conditioning system must be provided.

Start button

Power supply plug

Ground

connection

Ethernet

Reset Analog Sync Channels

Digital

Sync Channels

PD Channels

Antenna

GPS plug

Fiber optic

connectors SP plug

EPS plug




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3.2 CONNECTING THE ACQUISITION UNIT In order to have galvanic separation between the operator and the acquisition unit, the connection of PDBaseII to the control unit is achieve with a fiber optic decoupling sys-tem (composed of fiber optics - Ethernet / fiber optics media converter) as depicted in Fig. 3.4.

Fig. 3.4: Connection with fiber optic decoupling

The unit can be connected to Internet or to a company Intranet by setting its IP address to a public IP address or a static IP in the company address range. Fig. 3.5 schematizes the connection through Internet.

Fig. 3.5: Connection of the acquisition unit to the Network.

Ethernet / fiber optics

media converter

RJ-45 Cable Fiber optics

RJ-45 Cable Fiber optics

Ethernet / fiber optics media converter


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3.3 DEFAULT NETWORK SETTINGS AND RESTOSTORING PROCEDURE The following step-by-step procedure describes how to restore the instrument factory network settings:

1) Turn off the instrument and remove the ETH.RST cap (see Fig. 3.2) 2) Turn on the instrument holding down the ETH.RST internal button 3) After a couple of seconds release the ETR.RST button and reinstall the cover

cap Now the network settings are as the following Tab. 3.1:

Tab. 3.1: Factory network parameters

IP Address 192.168.10.179

Subnet Mask 255.255.255.0

Gateway 192.168.10.100

Port 5000




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4 TECHIMP PDBASEII CONTROL SOFTWARE 1.01.09 MANUAL Techimp PDBaseII control software allows the operator to fully control the acquisition unit and to process the acquired data. A deeper post processing of the acquired data is provided by means of Techimp PDProcessingII software. The following sections offer a simple and complete handbook for installing and under-standing the Techimp PDBaseII software.

Follow the steps in this section to install the software and to configure the control unit before attempting to communicate with the acquisition unit.

4.1 PRELIMINARY ACTIONS BEFORE THE USAGE This section describes the preliminary actions an operator should take for configuring the Techimp PDBaseII system before the first run. 4.1.1 CONTROL UNIT MINIMUM REQUIREMENTS The minimum system requirements for the control unit (personal computer or laptop) are:

• Operating system: Windows XP SP2;

• CPU: Pentium Core 2 duo class;

• RAM: 1 GB;

• Hard disk: 100 GB;

• Ethernet connection: 100 MBps base T;

• Screen resolution: 1024x768; While lower performances of the control unit can result in making the system not work-ing properly, higher performances unit result in a bettering of the system performances.


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4.1.2 SOFTWARE INSTALLATION Locate the setup.exe program in the PDBaseII/Installer folder in the CD provided to-gether with the acquisition unit. Run the setup.exe installer. In the following figures (from Fig. 4.1 to Fig. 4.5) the screenshots of the dialog windows for the installation are reported.

Fig. 4.1: Installation step 1.






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After this the software will be installed on the control unit. The shortcut of the program is located in the Start menu, in Programs/Techimp/PDBaseII/PDBaseII Standard ver 1.01.09/PDBaseII.exe After the installation of the Techimp PDBaseII standard software, the system automati-cally installs the Techimp PDFramework that is necessary for the correct functioning of the software.

It is possible that the system requires a reboot after the installation of the Te-chimp PDBaseII standard software, but it is necessary to reboot it manually after the installation of the Techimp PDFramework.

Figures from Fig. 4.6 to Fig. 4.9 report the screenshots of the dialog windows for the in-stallation of Techimp PDFramework.


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Fig. 4.6: PDFramework installation step 1.






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4.1.3 CONTROL UNIT IP CONFIGURATION In order to establish a TCP/IP connection between the control and the acquisition units, it is necessary to configure the IP address of the control unit to belong to the range of the Techimp PDBaseII. The default factory set IP address is 192.168.10.179 and the subnet mask is 255.255.255.0 so, as a consequence, the IP address of the control unit should be 192.168.10.XXX where XXX is a number between 0 and 255, different from 179 (i.e. the two IP addresses need to be different). To configure the right IP address on the control unit, allowing it to communicate with the acquisition unit, it is necessary to go in the Start menu, Settings/Network connec-tions/Local Area Connection. Select Internet Protocol (TCP/IP) in the dialog window (Fig. 4.10) and click on Properties.

Fig. 4.10: Local Area Connection dialog window.


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Insert the required IP address and subnet mask in the correspondent dialog boxes of Fig. 4.11.

Fig. 4.11: Internet protocol properties dialog window.

If the main IP address is already configured for the Internet connection a further IP con-figuration can be added by clicking on the Advanced button in the dialog window of Fig. 4.11. The dialog window of Fig. 4.12 appears.

Fig. 4.12: Advanced TCP/IP settings.

Clicking on the top Add button (the one highlighted by the red arrow in Fig. 4.12) it is possible to add more IP addresses associated to the same network card. Just insert the required IP address and subnet mask in the dialog window of Fig. 4.13.

Fig. 4.13: TCP/IP Address window.

INSERT IP address: 192.168.10.1 Subnet mask: 255.255.255.0




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4.1.4 CONFIGURE THE NETWORK PARAMETER OF ACQUISITION UNIT The NetConfig tool allows the operator to change the IP settings of the acquisition unit. The shortcut to the NetConfig tool is located in the Start menu, in Pro-grams/Techimp/PDBaseII/Tools/ NetConfig.exe. In order to apply the changing is necessary that the Techimp PDBaseII is connected to the control unit. Opening the NetConfig tool the dialog box shown in Fig. 4.14 appears.

Fig. 4.14: NetConfig window

Fig. 4.14 shows the actual parameters of the acquisition unit. IP Address, Subnet Mask and Gateway can be changed. Set button saves the new settings. Reload button recalls the last saved settings; Cancel button erases all the settings. In order to apply the new settings it is necessary to restart the acquisition unit. 4.1.5 CONNECTING TO THE ACQUISITION UNIT Once the Techimp PDBaseII software is installed and the acquisition unit is properly connected to the control unit (see section 3.2) it is possible to launch the PDBaseII.exe software from the shortcut located in the Start menu Programs/Techimp/PDBaseII/ PDBaseII Standard ver 1.01.09 folder. 4.2 CONNECTION ERRORS When the Ethernet connection is not proper or the system does not communicate, an error message (see Fig. 4.15) appears in the Techimp PDBaseII control software win-dow.

Fig. 4.15: Connection error


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Once the operator has checked the correctness of the connection of the fiber optic link and of the RJ-45 cable, it is possible to select “Try again” button. It is also possible to “Try with data factory network settings”, if the acquisition unit is configured with the factory network parameters. If there are still communication problems, it is suggested to reset the Techimp PDBaseII network parameters following the procedure described in the section 3.3 and select the “Try Data Factory Network Settings” button. The network parameters can be changed by the tool NetConfig described in section 4.1.4. In the following Tab. 4.1, a list of possible connection error causes and related solutions is reported.

Tab. 4.1: Connection error and its possible solution

Connection error Solution

The TCP/IP protocol is not correct.

Set the TCP/IP protocol (IP address and subnet mask) of laptop as indicated in section 4.1.3

The control unit has a firewall activated.

Disable the firewall or exclude the PDBaseII Control software by the list of the firewall blocked software.

The Techimp PDBaseII ac-quisition unit is switched off.

Check the Techimp PDBaseII acquisition unit power supply (PS connector, power on the LV network, etc)

The Ethernet media converter is not supplied or failed.

Check the media converter power supply and verify that all the LEDs are switched on.

The physical connection be-tween the laptop and the ac-quisition unit is bad.

Check the RJ-45 cable is rightly connected from the laptop to the media converter; check also the right con-nection of fiber optics between the media converter and the acquisition unit (see Fig. 4.16).

Fig. 4.16: Fiber optic connection

Fiber optic

connectors




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4.3 CONTROLLING THE ACQUISITION UNIT After the connection, the PDBaseII Standard software starts running the Main window (Fig. 4.17).

Fig. 4.17: Main window.

At the top of the Main window it is possible to find the Menu bar and the Top bar (Fig. 4.18).

Fig. 4.18: Menu bar and Top bar.

Instructions in red are referred to drop-down menu in the Menu bar.

4.3.1 TOP BAR In the Top bar it is possible to find:

• Start and Stop Streaming manages the on-line streaming status of the instru-ment.

• Acquire Wfms starts the acquisition and save data in a .pd2 file containing the PRPD Pattern, the Classification Map and all the pulse waveforms.

Menu bar

Top bar


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• Acquire Data starts the acquisition and save data in a .pd2 file containing the PRPD Pattern and the Classification Map.

• Get On-Line Data sends to Pre processing tool the pulses acquired in streaming mode.

• GPS Time show the current date and time, it works only if the GPS connection it is activated.

4.3.2 STREAMING PANEL The Streaming panel is the left part of the Main window represented in Fig. 4.17 and consists of two graphs displaying pulses that exceed the trigger threshold. Pulses can be depicted with four different visualizations: pulse waveform, pulse spectrum, PRPD pattern and classification map (Fig. 4.19).

Fig. 4.19: Different visualizations of pulses.

Waveform graph displays the pulse waveform in the time domain.

Spectrum graph displays the pulse power spectrum in the frequency domain.

PRPD Pattern graph shows a large amount of acquired pulses relating their ampli-tude with their phase with respect to the synchronization signal (sinusoidal wave-form). The color of each point represents the number of PD pulses for each pair of values of amplitude and phase. When the amount of data reaches the maximum pulses number, the software will reset the pattern automatically (refer to section 4.3.3 for managing the maximum pulses number). Classification Map shows the acquired pulses classified by Equivalent Timelength and the Equivalent Frequency, two parameters relevant to the pulses waveforms. Each point into the Classification map is related to a single point in the PRPD Pat-tern graph.




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By right-clicking the mouse on one of the two graphs of the streaming panel, it is possi-ble to switch from one visualization to another one and reset the PRPD pattern graph and the Classification map. Graphs can be reset also by means of the quick command [R] key. 4.3.3 ACQUISITION PARAMETERS PANEL The window shown in Fig. 4.20 displays the setting acquisition parameters of the PD Channel shown in the menu ring in the top part of this window (Channel number). In the following, the commands will be described.

Fig. 4.20: Acquisition parameter panel.

Channel Number allows the operator to select which PD channel to be activated and shown in the streaming panel.

WARNING! Each channel has its own acquisition parameters.

Sync Source allows the operator to choose among six synchronization channels the one to be associated to each PD channel. It is also possible to select an Internal syn-chronization, that means that the PD channel is synchronized with the mains that sup-plies the Techimp PDBaseII. For more information about Sync channels refer to sec-tion 4.3.7. Full Scale sets the maximum value (positive and negative) displayed in the graphs (PRPD Pattern and Waveform graph), it is possible to change its value by writing the


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desired one in the related Full Scale text box, by clicking the related buttons or by means of the quick command [Page up] and [Page down] keys. Time Length sets the total length of displayed and acquired waveform for each pulse. It is possible to change it by selecting the desired value in the pull-up menu. Trigger sets the minimum value above which pulses are displayed and acquired. It is possible to change the Trigger Value by writing the desired value in the trigger text box, by moving the trigger arrow in the Pattern or Waveform graph or by means of the quick command [Up arrow] and [Down arrow] keys. Pre Trigger is used to initiate sweep ahead of transmitted pulse, it is possible to change its value (in % of the time length) by writing the desired one in the correspondent test box, by moving the pre trigger arrow in the Waveform graph or by means of the quick command [Right arrow] and [Left arrow] keys. IEC Software enables the amplitude value conversion from mV to pC in the pattern graph. To obtain a correct conversion it is necessary to calibrate the Techimp PDBaseII unit (see section 4.3.9 for the details about calibration). Enable Map Filter enables the filters selected with map filtering tool (see section 0 for the details about map filtering). Bandwidth Mode sets the different types of acquisition frequency bandwidth.

• W.B. is the wide band. The range of frequency acquisition is from 16 kHz to 48 MHz.

• W.B. + HPF is the wide band plus a 2.5 MHz High Pass embedded hardware Filter. The range of frequency acquisition is from 2.5 MHz to 48 MHz.

• IEC 60270 is the IEC standard bandwidth. The range of frequency acquisition is from 115 kHz to 440 kHz.

Max pulse number sets the maximum number of pulses that activate the refresh of pat-tern graph in streaming mode. The highest value is 300.000 pulses. Dead Time sets the short time after a trigger event when a detector cannot process an-other event. The available range is 0 (short) ÷ 10 µs (very long) By right-clicking the mouse on the bottom part of acquisition parameter panel (see Fig. 4.21), other status information will be visualized.

Normal status After clicking the right mouse button

Fig. 4.21: Other information on acquisition parameter panel.




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Phase Shift indicates the phase shift applied to the acquired pulses with respect to the sync voltage in input to the acquisition system. pC indicates the 98th percentile of the amplitude distribution of the PRPD Pattern shown in the streaming panel. Scale Limit sets the full scale of the PRPD Pattern (displayed in pC) shown in the streaming panel. It is possible to change it by selecting the desired value in the pull-up menu, ranging from 10 pC to 100 nC. It is possible to activate the visualization of the pattern in autoscale, by selecting None in the pull-up menu. Calibration Status indicates if a calibration is activated. 4.3.4 MULTIPLE TAB PANEL This part of the software allows the operator to choose among various visualization win-dows. Clicking on the tabs, located in the right part of panel, the operator can switch among them. 4.3.4.1 Acquisition Settings window The window shown in Fig. 4.22 allows the operator to set the main parameters related to an acquisition. Principal commands will be described in the following.

Fig. 4.22: Acquisition settings window.


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Pulse Number and Time out [sec] are the two conditions for the end of an acquisition: the acquisition will stop when the number of pulses reaches the fixed value in the text box Pulse Number or the acquisition time reaches the fixed time in the text box Timeout [sec], whichever is reached first. Both values can be changed writing the desired value in the related text box. Comment Enabled enables a short comment of acquired data in the acquisition com-ment window which appear before saving file (see Fig. 4.23).

Fig. 4.23: Acquisition comment window.

File name and path allow to re-name the file through the dedicated text box and to se-lect the path where to save the data by means of the browse button. File number indi-cates a three-figure number enqueued to File name to avoid overwriting of files. It is automatically increased by one after each acquisition. Circuit: due to the fact that the fuzzy logic algorithm uses also the pulse polarity for a correct automatic diagnosis, it is necessary to set the right kind of measurement circuit used for the selected channel. It can be Direct (e.g. a high frequency current trans-former wrapped around the ground connection of the EUT, Equipment Under Test) or Indirect (e.g. a coupling capacitor connected in parallel to the EUT).

WARNING!! The next two functions work only when there is a connection be-tween the Techimp PDBaseII and the optional GPS system.

Start Acquisition Time: sets date and time to start the automatic data acquisition. Enable GPS Sync Acquisition: enable the automatic data acquisition with time pa-rameters set in start acquisition time box. 4.3.4.2 GPS Parameters window In the window displayed in Fig. 4.24 it is possible to check the GPS connection status. The GPS Parameters window can also be opened by the quick command [Ctrl+5] key or from menu bar: Tools >>> GPS Status




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Fig. 4.24: GPS Parameter window.

The Techimp PDBaseII can be equipped with GPS board. This feature is not imple-mented on standard Techimp PDBaseII version, but only upon Client request. Once the connection between Techimp PDBaseII and GPS satellites is properly estab-lished, the led placed in the top-left part of the GPS Parameters window will be on and Doing Fixes will be written in the dialog box GPS Decoding status (as reported in Fig. 4.24). During the GPS signal fixing, the percentage in the Self Survey Progress% box in-creases until the Techimp PDBaseII is fully connected to the GPS satellites. Once Self Survey Progress% will be 100% completed the system will be ready to work with the correct synchronization. 4.3.5 PRE PROCESSING TOOL When the operator clicks on the “Acquire Wfms”, “Acquire Data” or the “Get on line data” buttons located in the right part of the Top bar, data relevant to PD measurement are collected and it is possible to select one of three different tabs related to the Pre processing tool, displayed in Fig. 4.25. In order to select a single cluster of pulses it is possible to zoom on a region of the Clas-sification Map by dragging the mouse cursor on the map (Fig. 4.25-a). The PRPD pat-


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tern in the top part of the window is redrawn showing only the pulses belonging to the selected zone of the map. In order to analyze the zoomed area, obtaining the diagnostic index and the identifica-tion tool, click on the “Process Data” button. The map zoom is a very powerful tool that helps an operator in investigating from the whole dataset each different phenomenon, by means of the separation among the dif-ferent sources of HF signals, discriminating what can be related to defects located in the insulating material under test, defects not involving the insulating material under test, external noise, etc. Once the desired phenomenon is selected, it is possible to perform an automatic diag-nosis that helps the operator in the identification of the HF source (see Fig. 4.25-b and c).

a) b) c)

Fig. 4.25: Pre processing windows.

1. Classification: the pattern and classification map are shown; it is possible to perform the zooming operations on the classification map. Pattern auto filtering allows filtering automatically the acquired pattern. If it is enabled, the operator must click on the “Process data” button to apply the auto filtering and analyze the pattern. The Classification windows can also be opened by the quick command [F6] key or from menu bar:

Analysis >>> Classification

2. Diagnostic Index: shows relevant acquisition statistical parameters related to the zoomed dataset, part of the ones used by the fuzzy logic algorithm for the automatic diagnosis. The Diagnostic window can also be recalled by means of the quick command [F7] key or from menu bar:




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Analysis >>> Diagnostic Index

3. Identification: shows the first level of identification of the fuzzy logic algorithm. It suggests the nature of processed dataset, i.e. Corona, Surface, Internal or Noise. In case the likelihood of the parameters is low it returns Invalid data which means that the phenomenon cannot be recognized by the automatic diagnosis algo-rithm. For the automatic diagnosis system it is very important that the parameter Circuit (see acquisition setting window in section 4.3.4) is correctly set because the investigation of the polarity is used together with the statistical analysis. The Identification window can also be opened by the quick command [F8] key or from menu bar:

Analysis >>> Identification 4.3.6 STATUS BAR The Status bar (see Fig. 4.26) is located in the bottom part of the main window and it gives some information relevant to the current status of the controlled instrument.

Fig. 4.26: Status bar.

Applied Voltage [kV]: the displayed number is the calibrated value voltage of the sig-nal read from the synchronization channel. To calibrate the voltage applied to the EUT open the synchronization window (see section 4.3.7) with [Ctrl+1] key or by menu bar: Tools >>> Sync Sync freq. [Hz]: the displayed number is the frequency value of the signal read from the active synchronizing signal. Sync status: when the led is on, the acquisition unit is synchronized, that means the voltage value of the synchronizing signal is high enough to extract the frequency infor-mation. Refer to the datasheet (see ANNEX A) for the amplitude and frequency ranges supported by the synchronizing channels. Pulse Counter: indicates the number of pulses acquired in streaming mode. Repetition rate: indicates the repetition rate (average number of pulses per period) of pulses acquired in streaming mode. IP Address: is the IP address of the connected Techimp PDBaseII unit. Connection: indicates if the communication between Techimp PDBaseII and the con-trol unit is correct.


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4.3.7 SYNCHRONIZATION WINDOW In the window of Fig. 4.27 it is possible to visualize the waveforms of all the synchroni-zation signals and to set the relevant parameters. The Synchronization window can be opened by the quick command [Ctrl+1] key or from menu bar: Tools >>> Sync

Fig. 4.27: Synchronization window.

It is possible to select each of the seven different channels in the top of window in order to visualize the relevant waveform. Time Length sets the waveform length of the synchronization signal. It can be changed using the drop-down menu or moving the related cursor. Filter Band [Hz] allows filtering, via software, the synchronization signal. It is a low pass filter, and the value of the cut off frequency can be selected by the drop down menu. Scale is the full scale of synchronization graph. Both the blue arrows and the drop-down menu can be used to modify the parameter value. Phase Shift is used if the selected synchronization signal has a different phase with re-spect to the voltage applied to the equipment under test. It is possible to shift the signal to the desired value by means of this command. Applied Voltage allows to set the voltage apply to the EUT. Sync frequency is the frequency value indicator of the selected synchronization chan-nel.




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Sync Amplitude is the rms voltage value indicator of the signal in input to the selected synchronization channel. 4.3.8 MAP FILTERING WINDOW The TW map filter (see Fig. 4.28) allows filtering signals through the Classification Map. In order to open the window, press [Ctrl+2] key or from menu bar: Tools >>> Map filtering

Fig. 4.28: Map filtering tool.

By clicking and dragging the mouse on the map, it is possible to select the areas in the Classification Map which have to be filtered. A line appears on the right side of the win-dow in Filter Number list for each selected area and the content of the list as default will be automatically discarded in the pulses acquisition. In order to capture or discard the selected areas in the map, it is necessary to select Discard or Capture box, located in the bottom of the Filter Number list. If more filters have a common area overlapped, the total area will be processed (discarded or captured) as union of the different areas. The four directional buttons (Up, Down, Left, Right) can be used to move the filter on the map that is selected in the Filter Number list. A filter can be deleted by selecting it in the Filter Number list and then clicking on Delete Filter button, whereas Delete All Filters button allows deleting all the set filters. The Classification Map can be refreshed with the applied filters by clicking on the Refresh button. Fig. 4.29 shows the dialog box when exiting from the Map filtering window to confirm whether to apply the settings of the filters or not. This window does not appear if the op-erator clicks on Apply Filters button before exiting the window.

Fig. 4.29: Map filtering exit window.


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When the Map filtering tool is active, the software automatically has the Enable Map Fil-ters box in Acquisition Parameters window checked (see Fig. 4.20).

4.3.9 CALIBRATION WINDOW The Calibration window displayed in Fig. 4.30 allows the operator to set the calibration pulse in order to obtain the PD amplitude in pC values. The Calibration window is en-abled only when one of IEC software or IEC 60270 is selected from the acquisition pa-rameter window (see section 4.3.3). In order to recall the Calibration window press [Ctrl+3] key or from menu bar: Tools >>> Calibration

Fig. 4.30: Calibration tool window.

NOTE: Before opening the calibration window, it is necessary to set the cor-rect full scale and trigger in the streaming window.

After having connected the calibrator to the EUT, select the correct value in pC injected in the Amplitude box. In order to Save Calibration pulse select the related box and click on the Calibrate button. The file will be saved with the name written in File Name box and with .clb file extension. If the Save calibration button is not selected, the calibration will be applied only to the actual measurement session but not saved: when restart the Techimp PDBaseII sys-tem, the performed calibration will be lost. The Required Pulse Nr. box indicates the number of calibration pulses to be acquired in order to calculate the average value that will be used by the software to calibrate. This feature allows reducing the effect of the background noise during the calibration session.




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It is also possible to Load a previously saved calibration and Reset the Techimp PDBaseII system to the state without any calibration assigned. 4.3.10 MENU BAR The Menu Bar has the main software controls. In the following a brief description of the commands is reported, except for the ones already explained in the past. The File menu (see Fig. 4.31) allows managing the configuration file.

Fig. 4.31: File menu bar.

File >>> Open Configuration (see Fig. 4.32) allows to load a configuration file previ-ously saved by the operator by selecting the “Open” item (quick command [Ctrl+O]) or loading the Techimp default configuration by selecting “Techimp Default” item (quick command [Ctrl+T]). By selecting the “User Default” item will be load the configuration saved as user default by operator (quick command [Ctrl+U]).

Fig. 4.32: File menu bar – open configuration.

File >>> Save Configuration (see Fig. 4.33) allows to save the configuration file. The “Save” item saves the configuration file in the same file previously loaded by the opera-tor (quick command [Ctrl+S]). Selecting “Save as” item the configuration will be saved with the specified name and folder (quick command [Ctrl+N]). Selecting “Save as user default” the configuration file will be saved and the system will recall this configuration file at next startup (quick command [Ctrl+R]).

Fig. 4.33: File menu bar – save configuration.

File >>> Exit (see Fig. 4.34) allows to close the software (quick command [Ctrl+X]).


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Fig. 4.34: File menu bar – exit.

The Communication menu (see Fig. 4.35) allows to repeat the connection procedure selecting the “Connect” item (quick command [Ctrl+Q]) or to stop the communication between the Techimp PDBaseII and the control unit selecting the “Disconnect” item (quick command [Ctrl+W]).

Fig. 4.35: Communication menu bar.

The Streaming menu (see Fig. 4.36) allows selecting different combinations of graphi-cal visualizations in the streaming panel: Waveform, Pattern, Classification map and Pulse spectrum. The operator can change the combination of graphs choosing the [F1] [F2] [F3] [F4] buttons of control unit keyboard.

Fig. 4.36: Streaming menu bar.

The Tools menu (shown in Fig. 4.37) allows the operator to select different software tools.

Fig. 4.37: Tools menu bar.




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Tools >>> Copy Settings (Fig. 4.38) allows the operator to copy the selected channel settings from a PD channels to another one or to all the PD channels. Checking “Include Synch Settings Copy” the synchronization settings will also be copied.

Fig. 4.38: Copy settings tool.

The Analysis menu (see Fig. 4.39) allows the operator to select each of the different tabs of the Pre processing tool.

Fig. 4.39: Analysis menu bar.

The Info menu (see Fig. 4.40) allows the operator to recall the information windows about the acquisition unit.

Fig. 4.40: Info menu bar.

Info >>> About... (Fig. 4.41) displays general information about Techimp PDBaseII and Techimp.

Fig. 4.41: Techimp PDBaseII info window.


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Info >>> Measurement Instrument (Fig. 4.42) displays the information relevant to the Software version, the Hardware release and the Factory IP Parameters (quick com-mand [Ctrl+I]).

Fig. 4.42: Techimp PDBaseII device info window.

Info >>> Techimp Website opens internet Techimp web-site: www.techimp.com.




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5 OPTIONAL DEVICES In this chapter the optional accessories of the Techimp PDBaseII system will be de-scribed. These devices are aimed at enlarging Techimp PDBaseII capabilities or to ex-tend its use to further applications. Refer to Techimp in case you need one of these de-vices. 5.1 TECHIMP MULTIPLEXER Techimp Multiplexer is an optional device that allows a single Techimp PDBaseII unit to be provided with seven HF channels instead of the standard four ones. Fig. 5.1 shows the Techimp Multiplexer. On the sensors side (the front side) two synchronization channels together with six HF channels are located.

Fig. 5.1: Multiplexer front side

The other side (rear side shown in Fig. 5.2) houses the four connectors (the synchroni-zation channel and tree HF channels) to connect the Techimp Multiplexer to the Te-chimp PDBaseII acquisition unit.

Fig. 5.2: Multiplexer rear side




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The Techimp Multiplexer has to be connected to the Techimp PDBaseII SP port through which it is also powered and controlled. Fig. 5.3 shows the connection scheme between the Techimp PDBaseII unit and the Multiplexer.

Fig. 5.3: Connection between PDBaseII and Multiplexer.

When Techimp Multiplexer is connected to the Techimp PDBaseII unit, all the seven channels in the list are available (Fig. 5.4). In the Channel Number list, channels from 1 to 6 are associated to channels CH1 - CH6 of the multiplexer, whereas the channel 7 is associated to the channel CH4 of the Techimp PDBaseII unit.

Fig. 5.4: Available channels with Multiplexer

Tab. 5.1 reports Techimp Multiplexer technical specifications.


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Tab. 5.1 technical specifications

Partial Discharge Input Number of channels 6

Bandwidth 16 kHz – 900 MHz

Input Impedance 50 Ω

Connector type BNC

Synchronization Input Number of channels 2

Bandwidth 0 – 10 kHz

Input Voltage range 0 – 200 Vpp

Connector type BNC

Communication Interface Connector type SPI

Power Requirements Voltage 5 V

Current 0.5 A

Connector type SPI

Dimensions (L* W * H) Connector excluded 250 * 80 * 52

Connectors included 250 * 110 * 52

Weight 1 kg

Operating environmental conditions

Temperature 5 – 50 °C

Humidity Max 90 % not condensed




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6 ANNEX A: DATA SHEET

TECHIMP PDBASEII system Wide Bandwidth Acquisition PD Channel 1 x 200 MS/s channel (4/6 multiplexed inputs) Bandwidth: 16 kHz ÷ 48 MHz 2.5 MHz ÷ 48 MHz 115 ÷ 440 kHz (IEC60270 compliant) Input range: 1 mVpp ÷ 5.0 Vpp Input sensitivity: < 1.0 mVpp Vertical Resolution: 12 bits Dynamic range: 75 dB

Input Impedance: 50 Ω

Recording time length: 40 µs maximum Pre-Trigger Recording time: 0÷100 % of time length Dead time min: about half acquisition time length. Synchronization features Frequency Range: 0.1 Hz÷1 kHz Phase accuracy: <1° Synchronization Voltage: 0.1 mVrms – 200 Vrms Line Synchronization internal-channel 1 x 100 kS/s 16 bit analog channel. Narrow Bandwidth Analog Channels 5 x 100 kS/s 16 bit simultaneous sampling channels to be used for analog signal moni-toring and/or synchronization purposes. All channels externally available by means of BNC connectors can be individually set via software. Selectable options are: Input attenuations: 20, 40 dB Full-scales values: 0.25 V; 0.5 V; 2.5 V; 5.0 V; 25.0 V; 50 V; >50 V 1st order Low Pass Filter Bandwidth: ~ 10, 20, 50, 100, 200, 1000 Hz




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Digital Channel 1 x high speed TTL input channel user selectable external synchronization acquisition gating (under development) external trigger (under development) Fiber Optic Input and Options One fiber optic input is provided for long distance insulated analog signal acquisition. Once connected to a special transmitter1 (option), 2 extra electrically insulated analog channels become available to the user. Communication system Full control via Ethernet TBase-100FX GPS option The system can be equipped with an optional GPS processor for precise absolute time acquisition over all channels. PD Channels and Synchronization front-end Analog signal front-end processing board easily replaceable in case of input overloads occurrence. PC platform minimum recommended performances Pentium Core 2 Duo 2.0 GHz, 2 GB RAM, HDD 100GB, 1024x68 screen resolution, Ethernet 10/100, USB port. Software OS: Win XP Professional, Windows Vista. Acquisition and processing programs pro-vided by Techimp. Firmware DSP and FPGA internal firmware updating via internet connection to Techimp web-site. Self Diagnostic capability Built-in test signal generator allows wide band channels to be checked automatically be-fore PD acquisition campaign (under development). Recommended periodical functionality full check at Techimp premises: once per year.

1 Two 24 bit 100 kS/s simultaneously sampled channel over one single fibro optic.


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General Operating Conditions: Temperature -5÷50°C; humidity 90% non-condensing; altitude ≤2000 m. Power Requirements: 85-250 V AC; 47-440 Hz; maximum power dissipation: 40 W Certifications: IEC 60270 hardware and software Box Dimensions: 230mm x 280mm x 110mm Overall Dimensions: 230mm x 300mm x 110mm Weight: 6 kg Warranty: one year.




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7 ANNEX B: PD PATTERN LIBRARY

Internal PD

Spherical void in epoxy (low overvoltage)



Spherical void in epoxy (large overvoltage)

Spherical void in epoxy, sharp electrodes

Internal PD with strongly divergent field




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Metallic protrusion with tree

Treeing in epoxy

Multiple voids

Multiple voids

Flat cavity

Internal PD in MV capacitor


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Slot discharges in rotating machine

Distributed microvoids

Embedded delamination in a rotating ma-chine winding

Conductor-side delamination in a rotating machine winding

PD within oil-impregnated pressboard




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Surface PD

Insulated HV conductor on grounded metal-lic plane (low overvoltage)

Insulated HV conductor on grounded metal-lic plane (large overvoltage)



Surface PD on cable termination

Surface PD on cable termination


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PD on stress grading system of a VPI rotat-ing machine with taped grading system

PD on stress grading system of a resin-rich rotating machine with painted grading sys-tem

PD at the surface of a rotating machine bushing

PD on ceramic insulators associated with salt fog pollution




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Corona PD

Needle on high voltage electrode (low over-voltage)

Needle on high voltage electrode (low over-voltage)

Needle on high voltage electrode (large overvoltage)





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Needle on ground voltage electrode (low overvoltage)

Needle on ground voltage electrode (low overvoltage)

Needle on high voltage electrode (dis-charges from both HV and ground electrode)

4.2.2.4.pdbase ii user manual_eng.pdf

Documents

manual techimp systems

techimp pdbaseii product

product category

software release

electricalelectronic

weee european directive

rohs european directive

weee directive annex