Errors Analysis in Distance Relay Readings with Presence of FACTS Devices

Gaber El-Saady, Rashad M. Kamel, Essam M.Ali


This  paper  presents studying the  performance of  distance impedance relay with the presence of  FACTS devices .Also  the measured  impedance  at   the  relaying  point  in  the  presence  of  series FACTS device SSSC , and  shunt FACTS device called STATCOM are obtained. A detailed  model of both SSSC and STATCOM  is  introduced  and  then  the  faulty  system is studied analytically , where  the  errors in the measured  impedance of distance impedance relay   are  introduced as a result of the presence of  series  and  shunt  FACTS  devices. The analysis results show the effect of impacting the FACTS devices location, the values of inserted SSSC and STATCOM voltages (operational conditions) and also the fault resistance values.

Keywords: Distance Relay, FACTS, STATCOM, SSSC.

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ISSN (Paper)2222-1727 ISSN (Online)2222-2871

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