A Power Quality Evaluation Method Using Optimal Algorithm for Combining Subjective and Objective Weight Information

摘要

Power Quality information is not only an important part of AMl (Advanced Metering Infrastructure) in smart grid and is an important part of technical support system of the electricity market, but also is one of the constraints in making tariff policy, so the power quality monitoring and evaluation is necessary of smart grid development and operation of power market, in this paper, A new hierarchy model for power quality evaluation is presented to quantify and evaluate the power quality. In the comprehensive evaluation method of multi-index,the weight information has a very important impact on evaluation result, based on subjective and objective weighting methods,this paper presents a combinational evaluation method resulting in consistency between subjective and objecuve evaluation in the least squares sense, then bring out a improved fuzzy synthetic evaluation method based on reliability code. The proposed method can overcome the shortages of the traditional fuzzy synthetic evaluation, Case results clearly show that the proposed method is attractive and effective.