Power Quality Comprehensive Evaluation Method for Distributed Generation

With the development of the distributed generation systems and more and more power customers are strict with power quality, comprehensive evaluations of power quality and improvements have become more and more important. However, the existing power quality comprehensive evaluation methods are not applicable to distributed generation. In order to study the feasibility of the distributed generation integration, and strengthen the positive guidance for improving the power quality, a new power quality comprehensive evaluation method is necessary for distributed generation. The power quality comprehensive evaluation method for distributed generation system using data envelopment analysis(DEA) was proposed and the comprehensive evaluation index system was built. Finally, a case study showed that the proposed method can compare each appraisal object's efficiency values and then get the ideal solution. The DEA method is suitable for the evaluation of power quality indices in distribution systems, and has practical significance for engineering.