Voltage profile improvement and congestion management using STATCOM and UPFC device

Constant load variation and voltage level change is frequent in power system. It may be controlled by voltage profile improvement and congestion management. Congestion management can be performed via system current reduction using FACTS devices. In this work, system voltage deviation reduction has been performed by allocating STATCOM device. Fitness value comprising of real power loss and total voltage deviation has been reduced by placing UPFC device. Total line loading of the system has been decreased due to that placement. Differential Evolution (DE) has been chosen for suitable sizing and sitting of FACTS devices. IEEE 30 bus system has been considered as test system. Total voltage deviation has been observed to be decreased from 0.6471 p.u to 0.4561 p.u for STATCOM device with 90%increased load. Congestion has also been significantly decreased after UPFC placement using Differential Evolution algorithm.