Evaluation of Shunt Reactive Power Compensation Effect on ATC Using Linear Methods

摘要

Most power transfer studies involve contingencies and multi pattern scenarios that often can only be performed in reasonable time with the use of linear methods. In these works, the effect of reactive power flows in line loading is neglected while formulating the problem for ATC (available transfer capability) calculations. This paper presents the determination of shunt reactive power compensation in the presence of FACTS (flexible AC transmission system) devices like: SSSC (static synchronous series compensator) and UPFC (unified power flow controller) for enhancement of power transfer capability of a power system incorporating the reactive power flows in ATC calculations. In doing so, redistribution of power flow takes place and therefore improves ATC of the system. Studies on a sample 5-bus power system model are carried out to illustrate the effect of shunt compensation along with line flow control.