Original scientific paper
https://doi.org/10.37798/2004532477
MAJOR DISTURBANCE IN THE CROATIAN SYSTEM ON SEPTEMBER 20, 2002, WITH LOSS OF TRANSIENT STABILITY AND OUTAGE OF TPP RIJEKA, PLOMIN 1 AND PLOMIN 2 UNITS – CAUSES AND CONSEQUENCES
Darko Nemec
; Institut za elektroprivredu i energetiku d.d.
Milan Stojsavljević
; Institut za elektroprivredu i energetiku d.d.
Abstract
The disturbance in the Croatian electric power system is considered to have been caused by three-phase short circuit on 220 kV TPP Rijeka – TS Melina that resulted in transient instability and outages of units in TPP Rijeka, TPP Plomin 1 and Plomin 2. The evaluation and determination of physical background of the disturbance source method applied uses real operation data and results of simulation research on a dynamic model of the system. The follow-up of the even was reconstructed based on current voltage values and the current from numerical line protection in a part of the 220 kV regional network and KRD data of stationary state from DAM programming package (Dispatcher Analysis of Network) of the National Dispatching Center (NDC) in Zagreb. The disturbance was simulated on the multimachine dynamic model of the system. Fairly good coincidence of simulation and real data of voltage and current enabled the determination of transient stability of units TPP Rijeka, TPP Plomin 1 and TPP Plomin 2, whereby the Croatian system became transiently unstable. Also, system security by voltage stability criteria was disturbed. Finally, based on the research, the range and significance of disturbance are given as well as necessary future activities.
Keywords
electric power system; large disturbances, transient stability, simulations
Hrčak ID:
343585
URI
Publication date:
30.4.2004.
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