Design and Implementation of a Control Strategy for a Transformer with Series Compensation

With the increasing levels of distributed generation, the control of voltages within statutory limits across distribution networks becomes challenging. Further, the demand depends on the load busbar voltages to some extent and therefore the voltage control becomes an important means of load control especially at peak load periods. An electronically controlled series compensator based on a three winding transformer was investigated to control the distribution network voltages The controller design and operation of the three-phase series compensator and its control are discussed. The proposed topology and control strategies are evaluated for specific transformer loading condition using simulations.