Application of multiple FACTS devices of similar type for congestion mitigation

Abstract

FACTS (flexible AC transmission system) devices can increase line loadability by altering transmission line parameters. Use of multiple FACTS devices can reduce congestion in heavily loaded lines, reduce system loss, improve stability and hence reduce cost of energy delivery. This paper examines the effect of multiple FACTS devices of similar type on congestion mitigation. The system has been tested with a series FACTS device (TCSC), a shunt FACTS device (STATCOM) and a combined series & shunt FACTS device (UPFC). The proposal has been demonstrated on IEEE-14 bus system.