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First South East European Regional CIGRÉ Conference - Portoroz, Slovenia, 7—8 June 2016 SEERC
Upgrade of SCADA system in remote control centres of Elektra Zagreb and Elektroslavonija Osijek
A. PIVČEVIĆ, I. KRAPIĆ, A. PREVIŠIĆ, A. VARŽIĆKončar-KET d.d.
Croatia
P26INŽENJERING ZA ENERGETIKUI TRANSPORTZ A G R E B
INŽENJERING ZA ENERGETIKUI TRANSPORTZ A G R E B
DC Elektroslavonija Osijek
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HP LP3065 HP LP3065 HP LP3065
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HP LP3065 HP LP3065 HP LP3065
Operator workstations
GPS antena
VN dispečeri
SCADA server
oskas01 oskas02
PCU server
oskpcu01 oskpcu02
UDW server
oskudw01 oskudw02
S/COM server
oskscom01 oskscom02
oskntp01
Timeserver
Switchosksw01 osksw02
oskpc01 oskpc02
Administor workstations
oskpc03
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HP LP3065 HP LP3065
oskpc04
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HP LP3065 HP LP3065
oskpc05
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HP LP3065 HP LP3065
DE/LF serveroskde01 oskbkp01
AD server
oskad01 oskad02
Backup device
WS500 Thin Clientserver
oskweb01
Usmjernik/vatrozid
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tation
HP LP3065
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tation
HP LP3065
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tation
HP LP3065
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tation
HP LP3065
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HP LP3065
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HP LP3065
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oskpc06CUP Beli Manastir
Operator workstations
oskpc07CUP Valpovo
Operator workstations
oskpc08CUP Donji Miholjac
Operator workstations
oskpc09CUP Orahovica
Operator workstations
oskpc10CUP Našice
Operator workstations
oskpc11CUP Đakovo
Operator workstations
LKKUserver
„Spliteri”
osklkku01 osklkku02
.53 .54
1. INTRODUCTIONElektra Zagreb (Distribution System Operator) spans the area of 2 550 square kilometers. In addition to a plant placed in the center of Zagreb, plants at Sv. Ivan Zelina, Samobor, VelikaGorica, Zaprešić, Dugo Selo and Sveta Klara take care on the supply of the electric energy to buyers.
Elektroslavonija Osijek (Distribution System Operator) spans the area of 4152 square kilometers representing the fourth biggest Distribution System Operator of the Croatian Power Authority (HEP ODS).
Investments into upgrading of the existing equipment are indispensable to fulfil these basic DSO targets as well as its new roles which have come to light due to the liberalization of the electric energy market. The main reasons for the upgrade are:
• The producer of the hardware server equipment seized support forthe stated equipment in 2013 [1] and the hardware equipment had tobe replaced which automatically meant the replacement of thesoftware equipment;
• The producer of SCADA applications has been abandoning itssupport to Tru64 UNIX software platform;
• Implementation of new and enhanced existing SCADA software functionalities.
Figure 1 Block diagram of the new SCADA system at ElektroslavonijaOsijek
The logical scheme of the new control system can be seen on the following picture:
2. HW AND SW UPGRADE
New hardware system components (not existing in their current system configuration) on which part of functionality of the new SCADA software is distributed are the following:
• Active Directory servers – servers intended for user account control; and
• Process Communication Unit (PCU) 400 servers – communicationso-called front-end servers.
Computer Operating Systems in the new SCADA System have been upgraded to new versions in accordance with Table I while the Data Engineering and Utility Data Warehouse data bases are based on the most recent technology of Oracle Data Base.
Computers OS (existing system) OS (new system)
SCADA, UDW True64 UNIX Red Hat Enterprise Linux 6.5 64b
PCU400, Web, DE Windows Server 2003 Windows Server 2008 R2 64b
Operating stations Windows XP Windows 7 64b Pro
Table 1 Existing and new SCADA system Operating Systems
The existing SCADA system software has been upgraded from version 2.3 to version 6.4 enabling the Employer to work with a whole range of new and enhanced functionalities:
• Counting of events in the alarm list as well as in the event list on the basis ofvarious criteria (priority, etc.);
• User friendly lists – alarms, events, chronology (sorting, filtering, easiercreation of own filtered lists, export to Excel files, etc.);
• Dynamic Contour Coloring on the basis of measurement levels: clear andintuitive visualization of voltage disturbances;
• Advanced Real Time Calculations – user oriented interface for definingcomplex calculations on real time data and historical data based on theMATLAB software package;
• Tabular presentations – software module that enables users to define complexinterfaces based on real time data: list extracts, positioning in a certain queue,defining of the display size, hiding of selected columns, etc.;
• Multilanguage support;• Numerous “smaller”, but important novelties (permitted manual entry without
blocking of data collection, possibility to configure an alternative data sourcefor individual indications, etc.);
• The number of characters for EXTERNAL_IDENTITY parameter has beenincreased to 40, while for the IDENTIFICATION_TEXT it has been increasedto 60;
3. PARALLEL SYSTEM OPERATION
Končar has developed its own in-house solution for the needs of the migration process (the transitional period during which simultaneous operation of the existing and the new SCADA system is required) and to solve the problem of existing remote terminal units that do not have a possibility of a simultaneous communication with more than one supervising center
Figure 2 Parallel system operation
4. CONCLUSIONThe upgrade of the SCADA systems in the remote control centers of Elektra Zagreb and Elektroslavonija Osijek has given the users a modern SCADA system keeping up with the latest operating systems and advanced SCADA and DMS functions.