Reactive power flow control and compensation in the industrial distribution systems

Uncontrolled reactive power flow in an industrial distribution system can give rise to excessive active and reactive power losses and voltage drops on steady-state load flow. In an interconnected distribution system with cogeneration, voltage drops under contingency conditions, i.e., on loss of a generator or tie line, can disrupt the continuous processes. The active power rating of the distribution system components can be seriously degraded. The author reports on reactive power generating and consuming devices typical of an industrial distribution system and their voltage sensitivities and control characteristics. Reactive power flow problems and control strategies in two industrial distribution systems are discussed.<>