Microprocessor-Based Stabilizing Control Equipment for Survival of Isolated Mid-City Power System

This paper describes the recently developed microprocessor-based stabilizing control equipment for survival of isolated mid-city power system having heavy load and large shunt capacitance (Underground cables) of TOKYO ELECTRIC POWER COMPANY (TEPCO). The active power balance and voltage stabilizing control scheme is realized by high-speed control of the 66KV load feeders, shunt reactors, shunt capacitors and 275KV & 154KV underground transmission cables dispersed in the power system.