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High Voltage Shunt Capacitor Banks (SCBs) are the most economical and critical components in the power system, providing reactive power and voltage support. Over temperature, over voltages, manufacturing defects can cause internal failures of capacitor elements. With todays sensitive protection available in numerical relays capacitor elements failure will be detected and capacitor bank will be taken...
Series capacitor imposes problems to line protection and other online decisions. The directional relaying issues during voltage and current inversions in a series-compensated line are addressed in this paper. A conventional directional relaying algorithm uses fault voltage and current phasors to derive the decisions and, thus, finds its limitation at voltage or current inversion. This paper proposes...
The PacifiCorp Jim Bridger Power Plant has 2.2 GW of installed capacity and is connected to the main grid by three 345 kV series-compensated lines. These lines are, on average, over 200 miles long. In order to operate at full capacity and maintain stability during a system contingency, Jim Bridger requires a generation-shedding remedial action scheme (RAS). PacifiCorp is modernizing and upgrading...
This paper presents a protection system for classifying and locating faults in thyristor-controlled series compensated (TCSC) transmission lines. The proposed scheme is based on multi-layer perceptron neural networks (MLPNN). The Levenberg-Marquardt (LM) training algorithm is employed. The LM algorithm appears to be the fastest training algorithm and highly nominated for better generalized models...
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