Power flow tracing based congestion management using differential evolution in deregulated electricity market

Abstract

In a restructured electricity market environment, the competition in the production and consumption of electric energy leads to the transmission network operating at or beyond one or more transfer limits. Then the system gets congested, resulting in an increase in the cost of electricity and the system security as well as reliability are said to be in danger. The selection of generators to reschedule their output for effective management of congestion is a crucial task for the system operator. This paper presents a differential evolution algorithm based on power flow tracing approach for selection and rescheduling of active power output. The proposed method is demonstrated on IEEE 30 bus and Indian utility 62 bus systems.