Technical and Economical Evaluation For Electrical Distribution Networks with DGs

As the electrical demand is increased and the supply policies changed from “conventional” energy to “green” energy, the use of distributed generation (DG) in the distribution systems is increasing. The penetration of DG has many important benefits. PSCAD/EMTDC simulation package is considered for system assessment while varying the rating and position of DG in the system. Results obtained are discussed to understand the effect of distributed generation penetration on the voltage magnitudes in the radial distribution line. Voltage sags disturbances associated with power quality are caused by short circuits, starting machines, or energizing a transformer. The voltage sag mitigation methods and FACTS devices considering economic aspects are discussed. The paper illustrates the impact on feeder voltage profile that depends on the rating and position of DG in the network in normal and abnormal operating conditions.