Effects of a cogeneration plant on the system imbalance of a distribution feeder connected with it

This paper has evaluated the effects of a cogeneration plant on the system imbalances of a radial three-phase four-wire distribution feeder connected with it. A three-phase four-wire distribution feeder is often operated under unbalanced circumstances by reason of unequal individual phase loads. The degree of voltage and current imbalances in a three-phase fourwire feeder might be significantly enlarged while a cogeneration plant is operating in parallel. In this paper, a sample distribution feeder with a cogeneration plant connected at its end was simulated. The effects of the cogeneration plant on the voltage imbalances, current imbalances, and system loss of the specific distribution feeder were evaluated based on the simulation results. The simulation results and conclusion are of value to distribution engineers for planning and operating such a system.