introduction to pqview and pqweb

Introduction to PQView and PQWeb

Wieslaw Jerry OlechiwVice President of International Sales & System SalesDranetz and Electrotek Concepts

2© 2012 Electrotek Concepts, Inc. All rights reserved.

Who Uses PQView Today?

United States/Canada• American Electric Power• Alabama Power Company• Baltimore Gas and Electric• CMS Energy• CPS Energy San Antonio• Con Edison New York• Detroit Edison Company• Dominion Virginia Power• Duke Energy Corporation• EnerNex Corporation• Entergy Services• EPRI• FirstEnergy• Georgia Power Company• Hawaiian Electric Company• Hydro One Networks• Hydro Ottawa• Maui Electric Company• NIST• Nebraska Public Power District• Northeast Utilities• Public Service Electric and Gas

CompanyPublic Service of New Hampshire

• Salt River Project• San Diego Gas and Electric

• Southern California Edison• Southern Company• Tennessee Valley Authority• United Illuminating Company• Wisconsin Public Service• Wireless from AT&TAsia-Pacific• Ausgrid Sydney• Companhia de Electricidade

de Macau (CEM)• Guangdong Power Grid• Guangxi Power Grid Company• Hebei Electric Power Company• Henan Power Company• North China Power Grid• Orion New Zealand• Provincial Electricity Authority• Shandong Provincial Electrical Power

Corporation• Shanghai Municipal Electric Power

Company• Shanghai Jiu Long Electric Power Science

& Technology Company• Shanxi Power Company• Yunnan Power Grid Corporation• Transpower New ZealandLatin America• Central Hidroeléctrica de Caldas • Operador Nacional do Sistema Eléctrico

Europe• Agder Energi Nett AS• BKK Nett AS• CEE Energiteknikk AS• Central Networks (E.ON)• DEM Slovenia• Elektro Slovenia• Elektrobistand• Hålogaland Kraft AS• Helgelandskraft AS• Hydro Aluminium AS• Hrvatska Elektroprivreda (HEP)• Istad Nett AS• Lyse Nett AS• Nordmøre Energiverk AS• Notodden Energi AS• PSE-Operator• Rødøy-Lurøy Kraftverk AS• SFE Nett AS• Skagerak Nett AS• SINTEF• Statnett• StatoilHydro• Sunnfjord Energi AS• Sweco Grøner AS• Tafjord Kraftnett AS• Tussa Nett AS


What data is stored in a PQView Database?

PQView Database

Waveform Samples

RMS Samples

Data LogsCircuit

Breaker Operations

Event Causes

Geospatial Attributes


What are the data sources for a PQView Database?

PQView Database

Power QualityMonitors

Microprocessor Relays

Digital Fault Recorders

EnergyMeters

SCADA Logs

System Models


What analysis functions are offered by PQView?

PQViewDatabase

Event Analysis

Reports

Indices

Fault Analysis and

Location

Notifications

Compliance Summaries


Components of PQView 3

Desktop Applications

PQ Data Manager (PQDM)

PQ Data Analyzer (PQDA)

PQView Express

Web Applications

PQWeb

WebPQView

GIS Fault Visualizer

PQView Database

Microsoft Access

Microsoft SQL Server

DeveloperTools

Software Developers Kit

(SDK)

PQDIF Library (PQDCOM4.DLL)

PQView ActiveX Libraries


Companies that Produce Power System Sensors or Software Integrated by PQView Users Today

• Advantech® • Arbiter® Systems• Cooper Power Systems® CYME• Dranetz®• Edison Electric Institute® • EDMI• Electro Industries®• Electrotek Concepts®• E-MAX Instruments• Fluke®/Reliable Power Meters• General Electric®• GL Industrial Group/Stoner Software®

SynerGEE® Electric• Gossen Metrawatt • GridSense

• Grounded Power• HIOKI®• Landis+Gyr®• Linbo• OSIsoft®• Power Monitors, Inc.® (PMI)• PSL Power Standards Labs®• Qualitrol®/LEM Instruments• SATEC• Schneider Electric®/Power Measurement®• Schweitzer Engineering Laboratories® (SEL)• Siemens®• SoftSwitching Technologies®• Unipower®• Utility Systems Inc. (USI)


IEEE COMTRADE Files

PQViewPQ Data Manager

SEL 5045 acSELerator Team Software

COMTRADE Folders

PQView Database

SUBNET Solutions SubSTATION Server

SEL Relays

GE Relays

GEEnerVista

Softstuf Wavewin Data Collection

Other Relays

Qualitrol Relays

BEN32 Master Station Software


Signature System®/Encore Series

PQView PQData Manager

PQView Database

DataNodes

InfoNode Server HTTP or Telephone Modem Connection

IEEE 1159.3 PQDIF Files


PQView Integration with ION Enterprise®or WinPM.Net Database

•Requires installation of optional ION Enterprise Database Data Handler

ION Enterprise PQView PQData Manager

ION and ACMMeters

Telephone or Ethernet

Connections

ION EnterpriseDatabase

PQViewDatabase


OSIsoft PI System

•Requires installation of optional OSIsoft PI SDK and Electrotek PiSlicer Library

PQView PQ Data ManagerPiSlicer LibraryPI SDK

PQViewDatabases

PiSlicer

PI Server

PI Server

PI Server


PQView Integrationwith Dranetz Portable Monitors

PQView PQ Data Manager

DDB Files

PQViewDatabase

Power Xplorer

Power Guide

Power Visa

Energy Platform EP-1


More Data Sources

• Cooper Power Systems CYME• Dranetz® PES Databases• Electro Industries/General Electric

Communicator Log EPM Files• Fluke®/Reliable Power Meters

(RPM) Omega and Scenario Databases

• GL Industrial Group/Stoner Software® SynerGEE

• Gossen Metrawatt Portable Monitors

• GridSense PowerView• GroundedPower Text Files• HIOKI® Text Files• Landis+Gyr® Text Files• PQView Text File Formats• PQView Databases• SATEC PAS Databases• Siemens® SICARO PQ Manager Text

Files• SoftSwitching Technologies® I-Grid®

Web Site

www.pqview.com/data-sources/


Custom Data Sources

•Alabama Power Company SCADA Database•Con Edison AMR Databases•Ergon Energy Australia AMR Database•Progress Energy Feeder Management System Database•Provincial Electric Authority (PEA) Thailand AMR Database

Dranetz DataNode 5530 Monitors

PQViewDatabases

PQView

MicrosoftSQL Server

HTTP via RAS

Dranetz DataNode 61000 Monitors

InfoNode Servers

Proprietary Dialup PQNodeData FilesDranetz PQNode 8010

Monitors

InfoNode Servers

InfoNode Servers

MMS via WAN

File Share

HTTPvia LAN

LAN

Schneider ElectricION Meters

HTTP via Frame Relay

ION Server

EnerVista Download ServerSEL and GE Relays COMTRADE

Files

FileShare

HTTPvia LAN

HTTPvia LAN

ECC PI ServerSCADA RTU Sensors

PI SDK

LAN

Frame Relay

GE XA/21


PQView Event Analysis

-100

-50

0

50

100

-200

0

200

0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18

Waveform Samples for Voltage SagDuration: 0.08333s Minimum: 50.29%

Electrotek/EPRI PQView®

Volta

ge (%

)C

urre

nt (A

)

Time (s)

Va Vb Vc Ia Ib Ic In

50

60

70

80

90

100

0

50

100

150

200

0.00 0.05 0.10 0.15 0.20 0.25 0.30

RMS Samples for Voltage SagDuration: 0.08333s Minimum: 50.29%


Volta

ge (%

)C

urre

nt (A

)

Time (s)

Va Vb Vc Ia Ib Ic In


Derivations from Waveformand RMS Samples

• Reactance-to-Fault• Radial Fault Location• Spectrum Charts

– 1, 2, 3, 4, 5, 6, 10, and 12 Cycle Windows

• Phasors and Harmonic Phasors• High-Pass Filter and Low-Pass Filter• First Derivative , Second Derivative, Third

Derivative, and Squared Value·Time• Mean Values and RMS Values• Load Resistance, Load Reactance, Load

Impedance, and Load Impedance Angle• Real Power, Reactive Power, Apparent

Power, and Energy• Delta Real Power, Reactive Power, Apparent

Power, and Energy• Characteristic Voltage• Waveform Transformation

• Missing Voltage and Delta Current from First Cycle or from Ideal Waveform

• Symmetrical Components• Delta Symmetrical Components• Three-Phase Diode Rectifier Output• Line Frequency during Event• Total Harmonic Distortion (THD)• DC Component, Fundamental Component,

and Harmonic Trends during Event• Links to Map Viewer and Trend Viewer• IEEE P1159.2 RMS Characteristics• IEEE P1159.2 Point-in Wave Characteristics• IEEE P1159.2 Missing Voltage Characteristics• Dranetz Event Characteristics• Digital Status Changes• Operations Summary


Examples of PQView Event Derivations

2BC 3ABC

-20000

-10000

0

10000

20000

-5000

0

5000

0 0.05 0.10 0.15 0.20 0.25

Substation Bus - 1/12/2007 14:48:08.0060


Vol

tage

(V)

Cur

rent

(A)

Time (s)

Va Vb Vc Ia Ib Ic

2BC 3ABC1.676 1.686

10000

15000

2000025000

02000

4000

6000

0

20

40

0 0.05 0.10 0.15 0.20 0.25

Substation Bus - 1/12/2007 14:48:08.0060Reactance to Fault

Vol

tage

(V)

Cur

rent

(A)

Rea

ctan

ce (O

)

Time (s)

Va Vb Vc Vab Vbc Vca Ia

Ib Ic Iab Ibc Ica XTF



-100

-50

0

50

100

-500

0

500

-0.10 -0.05 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35

Substation ION 7700 - 2/1/2003 09:30:31.5377


Vol

tage

(%)

Cur

rent

(A)

Time (s)

Va Vb Vc Ia Ib Ic

103

104

105

106

107

380

400

420

-0.10 -0.05 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35

Substation ION 7700 - 2/1/2003 09:02:54.1855 RMS


Vol

tage

(%)

Cur

rent

(A)

Time (s)

Va Vb Vc Ia Ib Ic

-1000

-950

-900

-850

-800

-750

-700

-650

-600

-550

-500

-450

-0.1 0 0.1 0.2 0.3

Substation ION 7700 - 2/1/2003 09:30:31.5377Reactive Power


Rea

ctiv

e Po

wer

(kva

r)

Time (s)

Qa Qb Qc

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0 10 20 30 40 50 60

Substation ION 7700 - 2/1/2003 09:02:54.18551-Cycle FFT Va from -0.01735 to -0.0008137 s


RMS 104.9Fund 104.4DC 0.04575Max 108Min -113.6CF 1.532FF 1.110THD Fund 9.73%THD RMS 9.68%HRMS 10.16Phase Jump 2.380°

Vol

tage

(%)

Frequency (60 Hz Harmonic)

0

2

4

6

8

10

5

10

15

20

25

-0.10 -0.05 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35

Substation ION 7700 - 2/1/2003 09:02:54.1855Total Harmonic Distortion


THD

(%

)TH

D (

%)

Time (s)

Va Vb Vc Ia Ib Ic



-10

0

10

-2

-1

0

1

2

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Substation DL-8000 - 2/1/2003 00:36:16.3698


Vol

tage

(kV

)C

urre

nt (k

A)

Time (s)

Vab Vbc Vca Ia Ib Ic

49.94

49.96

49.98

50.00

50.02

50.04

50.06

50.08

50.10

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Substation DL-8000 - 2/1/2003 00:36:16.3698Fr

eque

ncy

(Hz)

Time

Frequency Avg(Frequency)


Analysis of Data Logs

5.5

6.0

6.5

7.0

1 SatFeb 2003

8 Sat 15 Sat 22 Sat 1 Sat

Substation - V RMS A, V RMS B, V RMS Cfrom 2/1/2003 to 3/1/2003

EPRI/Electrotek PQView®Time

Min[V RMS A] (kV) Avg[V RMS A] (kV) Max[V RMS A] (kV) Min[V RMS B] (kV) Avg[V RMS B] (kV)

Max[V RMS B] (kV) Min[V RMS C] (kV) Avg[V RMS C] (kV) Max[V RMS C] (kV)

0%

5%

10%

15%

20%

25%

30%

0%

20%

40%

60%

80%

100%

6.8 6.9 7.0 7.1 7.2

Substation - V RMS A, V RMS B, V RMS Cfrom 2/1/2003 to 3/1/2003

EPRI/Electrotek PQView®

Count 24183Min 6.785Avg 7.105Max 7.299Range 0.5141St Dev 0.08452CP01 6.826CP05 6.931CP25 7.068CP50 7.121CP75 7.162CP95 7.215CP99 7.244SI Range 0.04703

Rel

ativ

e Fr

eque

ncy

Cum

ulative Frequency

Avg[V RMS A] (kV), Avg[V RMS B] (kV), Avg[V RMS C] (kV)

Relative Frequency Cumulative Frequency


Analysis of Data Logs

1.5

2.0

2.5

3.0

3.5

7

8

9

10

11

12

1 TueJan 2008

8 Tue 15 Tue 22 Tue 1 Fri

Voltage THD versus Real PowerFrom 1/1/2008 to 2/1/2008


%M

W

Time

V THD A (%) P A (MW)

R²=0.4343

6.5

7.0

7.5

8.0

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

1.5 2.0 2.5 3.0 3.5

Voltage THD versus Real PowerFrom 1/1/2008 to 2/1/2008


P A

(MW

)

V THD A (%)


Phasor and Harmonic Analysis

0

30

6090

120

150

180

210

240270

300

330

0.5 1.0

Sample Site 205/01/1995 04:03:57


0° -120 +120° Va Vb

Vc Ia Ib Ic

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

CP 95 ValuesService Entrance 5530, From 2/1/2003 to 3/1/2003


Vol

tage

(%)

THD 3 5 7 9 11 13 15 17

Va Vb Vc

0.000

0.005

0.010

0.015

0.020

0.025

0 100 200 300 400 500 600

Waveform Measured at Arc Furnace12-Cycle DFT for Va from 0 to 0.1998 s


RMS: 1.429Fund: 1.429Max: 1.404Min: -1.403CF: 1.389FF: 1.113THD Fund: 2.18%THD RMS: 2.18%TID Fund: 1.12%TID RMS: 1.12%HRMS: 0.03117Phase Jump: 0°

Volta

ge (%

)

Frequency (Hz)


RMS Voltage Variation Analysis

Total Events: 47Events Violating ITIC Lower Curve: 14Events Violating ITIC Upper Curve: 0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

10-3 10-2 10-1 100 101 102 103

RMS Variation Magnitude-Duration Scatter PlotSelected Sites, From 2/1/2003 To 3/1/2003


Site NameService Entrance 3100Service Entrance 5530Service Entrance 5540Service Entrance 5571Service Entrance 7100Service Entrance 7700Substation 3720Substation 5530Substation 7700Substation 8010Substation DFR

Vol

tage

Mag

nitu

de (p

u)

Duration (s)

0

10

20

30

40

50

60

1997 1998 1999 2000 2001 2002 2003

SARFI Rates by MonthSingle Site, From 1/1/1996 To 1/1/2003


Eve

nts

per 3

0 D

ays

Month

SARFI-90 SARFI-85 SARFI-70 SARFI-50

0

2

4

6

8

10

1996 1997 1998 1999 2000 2001 2002

SARFI Rates by YearSelected Sites, From 1/1/1996 To 1/1/2003


SA

RFI

-ITIC

- E

vent

s pe

r 365

Day

s

Year

< 1 cyc1 cyc2 cyc3 cyc4 cyc5 cyc

6 to 10 cyc

10 to 20 cyc

20 to 30 cyc

30 to 60 cyc

1 to 2 sec

2 to 5 sec

5 to 10 sec

10 to 30 sec

30 to 60 sec

60 to 120 se

c

> 120 se

cDuration

0.0

0.2

0.4

0.6

Eve

nts

per S

ite p

er 3

0 D

ays

0 to 5

5 to 10

10 to 15

15 to 20

20 to 25

25 to 30

30 to 35

35 to 40

40 to 45

45 to 50

50 to 55

55 to 6060 to 6565 to 7070 to 7575 to 8080 to 8585 to 90

Voltag

e Mag

nitud

e (%)

Sag and Interruption Rate Magnitude-Duration Column ChartSelected Sites, From 2/1/2003 To 3/1/2003



Transformed waveforms

40000

45000

50000

55000

60000

65000

70000

0 0 .5 1 .0 1. 5 2. 0 2.5

66k V M easured - 5/09/2010 04:31:29.5006

P owe r Q ua lity S o lu tion s PQ Vie w®

Volt

age

(V)

T im e ( s)

Vab Vbc Vca



1 delta-star

L-L

40000

45000

50000

55000

60000

65000

70000

0 0 .5 1 .0 1. 5 2. 0 2.5

66k V M easured - 5/09/2010 04:31:29.5006


Volt

age

(V)

T im e ( s)

Vab Vbc Vca

15000

16000

17000

18000

19000

20000

21000

0.0 0.2 0.4 0.6 0.8 1.0

22kV Transformed L-L Load - 5/09/2010 04:31:29.5006

Power Quality Solutions PQView®Event Description:

Vol

tage

(V)

Time (s)

Vab Vbc Vca

1 delta-star

L-L



2 delta-star

L-L

40000

45000

50000

55000

60000

65000

70000

0 0 .5 1 .0 1. 5 2. 0 2.5

66k V M easured - 5/09/2010 04:31:29.5006


Volt

age

(V)

T im e ( s)

Vab Vbc Vca

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

0.0 0.2 0.4 0.6 0.8 1.0

3.3kV Transformed 2Tx L-L Load - 5/09/2010 04:31:29.5006


Vol

tage

(V)

Time (s)

Vab Vbc Vca

2 delta-star

L-L



2 delta-star

L-N

40000

45000

50000

55000

60000

65000

70000

0 0 .5 1 .0 1. 5 2. 0 2.5

66k V M easured - 5/09/2010 04:31:29.5006


Volt

age

(V)

T im e ( s)

Vab Vbc Vca

170

180

190

200

210

220

230

-0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

415V Transformed 2Tx L-N Load - 5/09/2010 04:31:29.5006


Vol

tage

(V)

Time (s)

Va Vb Vc

2 delta-star

L-N



1 delta-star

L-L

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

0.0 0.2 0.4 0.6 0.8 1.0

3.3kV Transformed 2Tx L-L Load - 5/09/2010 04:31:29.5006


Vol

tage

(V)

Time (s)

Vab Vbc Vca

2 delta-star

L-L

170

180

190

200

210

220

230

-0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

415V Transformed 2Tx L-N Load - 5/09/2010 04:31:29.5006


Vol

tage

(V)

Time (s)

Va Vb Vc

2 delta-star

L-N

40000

45000

50000

55000

60000

65000

70000

0 0 .5 1 .0 1. 5 2. 0 2.5

66k V M easured - 5/09/2010 04:31:29.5006


Volt

age

(V)

T im e ( s)

Vab Vbc Vca

15000

16000

17000

18000

19000

20000

21000

0.0 0.2 0.4 0.6 0.8 1.0

22kV Transformed L-L Load - 5/09/2010 04:31:29.5006


Vol

tage

(V)

Time (s)

Vab Vbc Vca

1 delta-star

L-L


PQWeb Analysis via Internet


PQView Application Study Guangdong Power, Guangzhou, China

• Provides transmission service for 38GW of load to Guangdong Province in Southeast China

• Monitors network with Dranetz-BMI DataNodes and Power Measurement ION meters

• Measurements available on intranet with Chinese user interface

• Measurements record DC transmission line performance during monopole ground return mode


PQView Application Examples

•Fault Location•System Performance•Integration of Power System Measurements with GIS•Standards Compliance


Fault Location Systems with PQView

Con Edison

Detroit Edison

San DiegoGas & Electric

Georgia PowerCompany

American Electric Power

Wisconsin Public Service United

Illuminating

Hydro-Québec


Feeder Tripsdue to Fault

VisualFault

Locator

PQ Meter Captures

Waveforms

PQViewCalculates Reactance

-20

0

20

-5

0

5

0.00 0.05 0.10 0.15

Single-Phase Fault Evolves into Two-Phase


Vol

tage

(kV

)C

urre

nt (k

A)

Time (s)

Va Vb Vc Ia Ib Ic

Match ReactanceTo Feeder Model

Dispatch Crews

1B 2AB2.195 2.216

10.012.515.017.5

1

2

3

2.5

5.0

7.5

10.0

0.05 0.10 0.15

Single-Phase Fault Evolves into Two-Phase

Volta

ge (k

V)C

urre

nt (k

A)R

eact

ance

(ohm

s)

Time (s)

Va Vb Vc Ia Ib Ic XTF

Fault Locating Process at Con Edison


RTF Performance

•On average, use of the Reactance-to-Fault for fault location saves one hour per feeder restoration job because it saves use of capacitive discharge thumpers and DC hi-pot

•Recent Results for Manhattan:

Year 0-1 MH 1-3 MH 3-5 MH 5-10 MH > 10 MH

2009 64% 24% 5% 2% 6%

2010 67% 14% 5% 3% 11%

2011 64% 20% 8% 3% 5%

Summer 2012 76% 14% 4% 4% 1%


Example Correlation of Feeder Fault Eventwith PI Event from SCADA Operation

1C

-10

0

10

20

-5000

0

5000

0 2 4 6 8 10

50THST - 2/25/2010 08:56:10.0650

Electrotek/EPRI Reference Cycle = 131 PQView®

OperationPoint Name 50BX13E.DXTime Stamp 2/25/2010 08:56:12.0233Value W50ST BKR 13E 39M54Description CLOSE-TRIP

Volta

ge (k

V)C

urre

nt (A

)

Time (c)

Va Vb Vc Ia Ib Ic


Example Correlation of Feeder RecloseEvent with PI Event from SCADA Operation

-10

-5

0

5

10

-2000

0

2000

0 2 4 6 8 10

50THST - 12/24/2010 22:25:48.3130


OperationPoint Name 50BX41W.DXTime Stamp 12/24/2010 22:25:52.0059Value W50ST BKR 41W 5M90Description TRIP-CLOSE

Volta

ge (k

V)C

urre

nt (A

)

Time (c)

Va Vb Vc Ia Ib Ic


Example Correlations of Capacitor EnergizingEvent with PI Event from SCADA Operation

-10

-5

0

5

10

15

-3000

-2000

-1000

0

1000

2000

0 2 4 6 8 10

50THST - 12/22/2010 06:20:11.3130


OperationPoint Name 50BXC2.DXTime Stamp 12/22/2010 06:20:14.0116Value W50ST BKR C2 CAP_2Description TRIP-CLOSE

Volta

ge (k

V)C

urre

nt (A

)

Time (c)

Va Vb Vc Ia Ib Ic

-10

-5

0

5

10

-2000

-1000

0

1000

2000

0 2 4 6 8 10

50THST - 12/22/2010 06:35:17.1250


OperationPoint Name 50BXC1.DXTime Stamp 12/22/2010 06:35:20.0112Value W50ST BKR C1 CAP_1Description TRIP-CLOSE

Volta

ge (k

V)C

urre

nt (A

)

Time (c)

Va Vb Vc Ia Ib Ic


One-Line Diagram of Estimated and Actual Location in PQView and WebPQView

Trap FallsActual Fault LocationUG_PRI_14975

41.265

41.266

41.267

41.268

41.269

41.270

41.271

41.272

41.273

41.274

41.275

41.276

-73.135 -73.130 -73.125 -73.120

5/16/2007 17:15:33.0843Line 3542


Sout

h/N

orth

West/East


One-Line Diagram with Aerial Mapof Estimated and Actual Location

Distance between estimated and actual location:200 meters



•Fault Location•System Performance•Integration of Power System Measurements with GIS•Standards Compliance


PQView Application Study SARFI Performance for UI Company

UI Substations Average SARFI performance trends for 12 month periods

0

5

10

15

20

25

30

35

40

1/1/96 to1/1/97

1/1/97 to1/1/98

1/1/98 to1/1/99

01/1/99 to01/01/00

1/1/00 to1/1/01

1/1/01 to1/1/02

1/1/02 to1/1/03

7/1/02 to6/30/03

UI A

vera

ge N

umbe

r of O

ccur

ence

s w

hen

Volta

ge a

t Sub

stat

ion'

s B

us fe

ll be

low

sp

ecifi

ed %

of N

omin

al in

pre

viou

s 36

5 da

ys

SARFI90 SARFI85 SARFI70 SARFI50 SARFI10


How are some electric utilities using these system-wide monitoring databases?

•Distribution Fault Location•System Performance•Integration of Power System Measurements with GIS•Standards Compliance


Web-Based Power Quality Monitoring System Management Software

• Map Navigation• Executive-Level Reports• Transient Event Alarms• Transient Event Analysis• Steady-State Trends Analysis• Statistics Reports• Power Quality Event Categorization• Load Analysis • Steady-State Power Quality

Assessment• Background Harmonic Analysis• Data Integrity Reports • Power Quality Report Generation


Web系统截图


Software Interface

Web-Based Power Quality Monitoring System Management Software



•Distribution Fault Location•System Performance•Integration of Power System Measurements with GIS•Standards Compliance


EN 50160 Compliance

•Typical Weekly Report by PQView in Croatia, Slovenia, &Poland

0 10 20 30 40 50 60 70 80 90 100

Freq 95%

Freq 100%

Vrms

Vthd

Plt

EN50160 ComplianceWeek 46 - From 11/12/2006 to 11/19/2006


Compliance (%)

Par

amet

er

110 kV Substation 1 110 kV Substation 2 110 kV Substation 3

110 kV Substation 4 110 kV Substation 5 110 kV Substation 6


EN 50160 Compliance

•Typical Annual Report by PQView in Croatia, Slovenia, & Poland

0

10

20

30

40

50

Report on Compliance with EN 50160 - EN501601/1/2006 - 1/7/2007


Cou

nt o

f Wee

ks

Site Name110 kV Substation 1

110 kV Substation 2110 kV Substation 3

110 kV Substation 4110 kV Substation 5

110 kV Substation 6

Compliant Noncompliant Missing

Site NameCompliant 49 2 1 49 43 38

Noncompliant 2 46 50 2 8 2Missing 2 5 2 2 2 13


Area Substation Voltage Control

•The amount of MW load determines what the voltage should be at the area substation following a set of rules called the “voltage schedule”.– Whether the voltage can be above or below the scheduled

voltage depends upong the time of day and the day of week•Methods of Controlling Area Substation Voltage

– Voltage Var Control (VVC Mode)– Local Tap Changer Control System (CMVM Mode)– Manual Adjustment of Transformer Taps


Area Substation Voltage Control

Voltage Control and Optimization•Process Control Tool Development

– Control Variables• Voltage Deviation from Schedule• Range of Tap positions on Parallel Transformers • Range of Mvar Load on Parallel Transformers

– Apply control chart methods to develop upper and lower control limits


VVC

VVC

-MAN

MA

N-V

VC

VVC

-MAN

MA

N-V

VC

VVC

-MA

NM

AN-

CMVM

CMV

M-M

ANM

AN-V

VCVV

C-C

MVM

CM

VM

-MA

N

MA

N-CM

VMC

MV

M-V

VCV

VC-M

AN

13.4

13.6

13.8

14.0

-200

0

200

100

150

200

5 SunJun 2011

6 Mon 7 Tue 8 Wed 9 Thu 10 Fri 11 Sat 12 Sun

Substation A

Con Edison® PQView®

kVV

MW

Time

Station PI.LE1VOLT Scheduled Voltage Max Voltage Min Voltage

SCADA Voltage Deviation Voltage Deviation LCL Voltage Deviation UCL LE1LODWX

5.01% UCL-LCL

Voltage Deviation Control Chart

Process Control Violation


Voltage Regulation Control Weekly Report

Each cell is interactive. When you double-click on a cell, you see the five-minute samples for that week in an interactive window.


Automatic Capacitor Analysis Procedure

•Record voltage and current waveforms at substation transformers using a power quality monitor

•Correlate each transient event with the SCADA operation events stored in OSIsoft PI System

•Calculate change in voltage total harmonic distortion (THD), power factor, and reactive power (kvar) by phase for each transient

•Calculate peak voltage and parallel resonant frequency for each transient

•Analyze each transient for synchronous closing performance•Analyze each transient for restrike characteristics•Determine if the transient is upline or downline using an

algorithm based on wavelet analysis


Trend Charts Possible

•Maximum Peak Voltage•Delta Voltage THD•Max Delta Voltage THD•Delta Reactive Power•Delta Power Factor•Delta Reactive Power Range•Delta Power Factor Range•Parallel Resonant Frequency


Synchronous Closing Methods

•Grounded-wye connected capacitor banks are controlled by closing the three phases at three successive phase-to-ground voltage zeros, giving 60° separation between transients.

•Ungrounded-wye capacitor banks are controlled by closing the first two phases at a phase-to-phase voltage zero and then delaying the third phase 90 degrees, which is at the phase-to-ground voltage zero.

•PQView’s new module is able to analyze how closely the closing was to these ideal closing times.– Closing Time– Closing Angle– Synchronous Status: Early, Synchronous, Delayed,


Synchronous Closing Assessment Methods

ManhattanStation

JoslynBanks

Avenue A C3

Parkview C1

Astor C1A, C2, C3

Murray Hill C3

Seaport No. 1 C1, C2, C3

Trade Center No. 1 C1, C2, C3

Bronx/WestchesterStation

JoslynBanks

Cedar Street C1

East 179th Street C1

Millwood C1

Ossining C1

Pleasantville C1

White Plains C1, C2, C3

Staten IslandStation

JoslynBanks

Woodrow C1

-100

-50

0

50

100

-1000

0

1000

2000

0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08

Millwood West TR1 - 8/24/2011 06:01:06.6980


Vol

tage

(%

)Cu

rren

t (A

)

Time (s)

Va Vb Vc Vres Ia Ib Ic Ires

• New module in testing to analyze how measured closing time was to the ideal closing time

• Early, Synchronous, Delayed• A special version of the module was

developed using Con Edison measurements to analyze switching method employed by Joslyn

introduction to pqview and pqweb

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