APPLICATION OF AN OPTIMAL TUNING TECHNIQUE OF ON-LOAD TAP- CHANGING TRANSFORMER FOR POWER QUALITY IMPROVEMENT IN TRANSMISSION LINE NETWORK

📄 Project Abstract

For reliable and efficient operation of power system, voltage level and reactive power flow along transmission lines has to be adequately regulated. To control reactive power flow over transmission lines and compensate for varying voltage drops, tap changing transformers are required. By altering the voltage magnitudes at the windings of the transformers through winding tap adjustment, reactive power flow can be controlled. The transformers can be off-loaded or on-line tap changer. In the latter, the transformers are disconnected from the system when the tap setting is to be adjusted, while in the former, the tap adjustment is carried out with the transformers connected. In this research work, Grey Wolf Optimization (GWO) algorithm is applied to determine the optimal On-Line Tap Changer (OLTC) of the available transformers in the system in order to improve the voltage profile and regulate reactive power. The constraints considered in the formulation of the problem are demand-generation...