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Comprehensive Evaluation of Impacts of Connecting Distributed Generation to the Distribution Network

  • Jin, Wei (State Grid Anhui Electric Power Company) ;
  • Shi, Xuemei (State Grid Anhui Electric Power Company) ;
  • Ge, Fei (State Grid Anhui Electric Power Company) ;
  • Zhang, Wei (School of Electrical Engineering and Automation, Hefei University of Technology) ;
  • Wu, Hongbin (School of Electrical Engineering and Automation, Hefei University of Technology) ;
  • Zhong, Chengyuan (State Grid Anhui Electric Power Company)
  • Received : 2016.03.31
  • Accepted : 2017.01.17
  • Published : 2017.03.01

Abstract

In this paper, we study the various impacts of connecting distributed generation (DG) to the distribution network. The comprehensive evaluation index system (CEIS) of four hierarchies is established, considering economy, reliability and voltage quality, and the calculation methods of different indexes are presented. This paper puts forward an improved triangular fuzzy number analytic hierarchy process (ITFNAHP) to weight the second level indexes (SLI) and the third level indexes (TLI), and calculates the variation coefficient to weight the fourth level indexes (FLI). We calculate the comprehensive weight coefficients based on the weight coefficients of the SLI, TLI and FLI, and then calculate the comprehensive evaluation of satisfaction (CES) of different access schemes. On the basis of the IEEE 33-bus example system, simulations of the calculation methods and the comprehensive evaluation method are carried out under different DG access schemes according to the same total investment cost and the same permeability, respectively, and the simulation results are analyzed and discussed.

Keywords

Distribution network;Comprehensive evaluation index system;Improved triangular fuzzy number analytic hierarchy process;Comprehensive weight coefficients;Comprehensive evaluation of satisfaction

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