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This paper presences analytical and simulation results of the application of distance relays for the protection of transmission employing Static Synchronous Series Compensator (SSSC). Firstly a detailed model of the SSSC and its control is proposed and then the situation is studied analytically, where the errors introduced in the impedance measurement due to the presence of SSSC on the line are analyzed...
In this paper impact of static synchronous compensator (STATCOM) on performance of distance relay is investigated both with analytic and simulation methods. At the first step the complete model of STATCOM with a 48-pulsed voltage source converter and its control circuit are described. At the next step, using analytic computations, the impact of STATCOM on the impedance calculated by the relay is investigated...
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