Optimal Location and Sizing of Distributed Generation In a Power Distribution System

ABSTRACT

Modern electric power distribution utilities are continuously under pressure for expansion of their networks in order to face the load growth and to properly supply their consumers. To meet these objectives, there is a need to provide acceptable climate for the entry of distributed resources and innovative operating practices. This article focuses on determining the effect of inserting a Distributed Generation (DG) unit in a power distribution system in India. The effect on the system voltage profile and line losses is evaluated. This has been accomplished by modeling the connection of a DG unit to different distribution buses and varying the DG unit size in a 13-bus test feeder. A financial evaluation has been carried out to examine implementation viability. The results show that the voltage profile is improved, losses are reduced and consequently the utility can obtain financial benefits when DG is incorporated into the system.

Keywords:

• distributed generation
• optimal location
• optimal sizing
• load growth
• cost benefit analysis
• voltage profile
• line losses