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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...
This paper discusses the distance relay ideal tripping characteristic in the presence of unified power flow controller (UPFC), one of 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. This is done by presenting the measured impedance at the...
This paper presents the effects of Static Synchronous Series Compensator (SSSC), one of the series connected Flexible Alternating Current Transmission System (FACTS) devices, on the measured impedance at the relaying point in the case of inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by several factors, including the line pre-fault loading,...
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 distance relay ideal tripping characteristic in the presence of static synchronous series compensator (SSSC), 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. This is done by presenting the...
This paper presents the effects of STATic synchronous COMpensator (STATCOM), one of the shunt connected Flexible Alternating Current Transmission System (FACTS) devices, on the measured impedance at the relaying point in the case of the inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by several factors, including the line pre-fault loading,...
This paper presents the effects of thyristor controlled phase shifter transformer (TCPST), one of flexible alternating current transmission system (FACTS) devices, on the measured impedance at the relaying point in the case of the inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by several factors, including the line pre-fault loading, the...
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...
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