Performance and Analysis of Voltage Compensation in Transmission Line Using SMES-Based IDVR

Rise in the power demand and existence of loss in transmission sector is increasing linearly. This is due to the increase in use of nonlinear load which causes voltage fluctuation in transmission lines. Some of the problems in it are sag, swell, voltage spikes, harmonics, open and short circuit faults. Among the above mentioned power quality issues, sag and swell will be considered as major fault, and it can be resolved and overcome by including the interline dynamic voltage restorer (IDVR). IDVR has enough capability to perform voltage compensation in an appropriate rate, and it maintains stable energy across DC link capacitor. The proposed method can have several DVRs connected to various distribution feeders in power system sharing common energy storage. A superconducting magnetic energy storage system (SMES) is selected to feed DVR, whenever DVR undergoes compensation. Further, fuzzy logic control also took part in it. The Simulink results convey the effectiveness and performance of proposed method.