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Title: Simulation studies on the distance relay performance in the presence of STATCOM
Authors: Sham, M.V.
Panduranga, Vittal, K.
Issue Date: 2011
Citation: Journal of Electrical Engineering, 2011, Vol.11, 3, pp.-
Abstract: Flexible AC Transmission System (FACTS) devices are used to enhance the transient stability limit and power transfer capacity of the existing transmission lines. The mid-point compensation using static synchronous compensator (STATCOM) as a shunt FACTS device is common practice among utilities. But, the presence of STATCOM has influence on performance of the distance relay under normal operating conditions, as well as under fault conditions. This paper presents both analytical and simulation studies carried out using PSCAD/EMTDC on a transmission system connected with a STATCOM at the midpoint and its influence on distance relay performance. Simulation results shows that the presence of STATCOM on transmission line greatly affects the measured impedance at the relaying point.
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