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This paper discusses the distance relay over-reaching due the presence of Thyristor Controlled Series Compensator (TCSC), one of the series connected Flexible Alternating Current Transmission System (FACTS) devices, considering its MOV operation. This is done by presenting the measured impedance at the relaying point in the presence of TCSC at the near end of the next line. The measured impedance...
This paper discusses the distance relay mal-operation in the case of installation of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) devices, on the second circuit of a double circuit transmission line, for inter phase, phase to phase and three phase, faults. This is done by means of presenting the measured impedance...
The problem of choosing optimal location and sizes for shunt capacitor in distribution systems is addressed. The objective of the capacitor placement procedure is not only to minimize the power losses along distribution feeders, but also help in maintaining the voltage profile within acceptable limits. the amount of benefit that can be reaped by placing the capacitors depend mainly on how the capacitors...
This paper presents the measured impedance by a distance relay with positive sequence voltage memory in the presence of thyristor controlled series compensator (TCSC), one of the series connected FACTS devices, on a transmission line. The measured impedance by distance relay is affected by the system structural conditions, pre-fault loading, and the ground fault resistance, as well as the presence...
This paper presents the measured impedance at the relaying point in the presence of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) devices, in the case of inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point itself depends on the power system structural and operational...
This paper discusses the measured impedance by distance relay in the presence of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) devices, on the next line, in the case of inter phase, phase to phase and three phase, faults. Especial attention is paid to the over-reaching problem. The measured impedance at the relaying...
This paper presents the measured impedance by a distance relay in the presence of thyristor controlled series compensator (TCSC), one of the series connected FACTS devices, on a transmission line, considering its metal oxide varistor (MOV) operation, in the case of inter, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by the power system structural...
This paper discusses the distance relay mal-operation in the presence of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) device, in the case of inter phase, phase to phase and three phase, faults. This is done by presenting the measured impedance at the relaying point in the TCSC presence at the near end of the line...
This paper discusses distance relays over-reaching in the presence of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) devices, on the far end of the second circuit of a double circuit transmission line, considering MOV operation. This is done by means of presenting the measured impedance at the relaying point and...
This paper discusses the distance relay mal-operation in the case of installation of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) device, on the second circuit of a double circuit transmission line, considering its metal oxide varistor (MOV) operation. This is done by means of presenting the measured impedance...
Distance relays are widely used as the main and back-up protection for transmission lines. They operate based on measured impedance at the relaying point, which is affected by several factors including pre-fault line loading and short circuit levels at the line ends. Introduction of Flexible Alternating Current Transmission System (FACTS) devices imposes further changes on the measured impedance at...
This paper presents the effects of thyristor controlled series compensator (TCSC), one of the series connected flexible alternating current transmission system (FACTS) devices, on the measured impedance at the relaying point for faults on a double circuit transmission line in the case of inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by...
This paper presents a genetic algorithm based method to use TCSCs in power systems in order to increase system loadability and to decrease the total loss. Optimizations are done on two parameters: the location of TCSCs and their values. A sensitivity analysis is used and the most sensitive lines are chosen to be compensated by TCSCs. For this purpose, the steady state model of TCSC is utilized. The...
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