基于组合赋权-VIKOR的电能质量综合评估  

Comprehensive Evaluation of Power Quality Based on Combination Weights and VIKOR Method

作　　者：钱俊杰 李昊泉 李广华 徐懂理[1] 吕干云[1] QIAN Junjie;LI Haoquan;LI Guanghua;XU Dongli;LÜGanyun(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,Jiangsu,China;NR.Electric Co.,Ltd.,Nanjing 211102,Jiangsu,China)

机构地区：[1]南京工程学院电力工程学院,江苏南京211167 [2]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《电气传动》2024年第6期37-44,共8页Electric Drive

基　　金：国家自然科学基金(51577086);江苏省高等学校自然科学研究重大项目(19KJA510012);南京工程学院研究生科技创新基金(TB202217044)。

摘　　要：针对大量高渗透率的分布式电源接入配电网导致的电能质量恶化问题,提出了一种基于组合赋权和多准则妥协解排序(VIKOR)法相结合的电能质量评估方法。首先,根据现有标准和工程实际情况,从幅值质量、波形质量和频率质量3个维度建立电能质量综合评估体系。其次,考虑到传统的9标度层次分析(AHP)法存在的缺陷,采用3标度对AHP法进行改进从而得到主观权重;为了避免单一赋权方法的不足,将熵权法中的熵值与指标相关法(CRITIC)中的信息量相结合得到客观权重,该方法统筹考虑了指标间的离散程度、相关度和对比度,并采用Lagrange乘子法将主客观权重进行结合。然后,采用VIKOR法得到各电能质量指标的综合评价值并对其进行优劣排序。最后,利用某地区的5个监测点所采集的电能质量各指标数据进行实例分析并与其他评价方法进行对比分析,验证了所提方法的可行性。Aiming at the problem of power quality deterioration caused by a large number of high-permeability distributed generation connected to the distribution network,a power quality assessment method based on combination weights and vlsekriterijumska optimizacija i kompromisno resenje(VIKOR)method was proposed.Firstly,according to the existing standards and the actual engineering situation,a comprehensive evaluation system of power quality was established from three dimensions:amplitude quality,waveform quality and frequency quality.Secondly,considering the defects of the traditional nine-demarcation analytic hierarchy process(AHP)method,the three-demarcation was used to improve the AHP method to obtain the subjective weight.In order to avoid the shortcomings of the single weighting method,the objective weight was obtained by combining the entropy value in the entropy weight method with the amount of information in the criteria importance though intercrieria correlation(CRITIC)method.This method considered the degree of dispersion,correlation and contrast between the indicators,and the subjective and objective weights were combined by the Lagrange multiplier method.Then,the VIKOR method was used to obtain the comprehensive evaluation value of each power quality index and sort its merits and demerits.Finally,the power quality index data collected by five monitoring points in a certain area were used for case analysis and compared with other evaluation methods to verify the feasibility of the proposed method.

关 键 词：组合赋权 改进层次分析法 熵权法 CRITIC法 VIKOR法 综合评估 

分 类 号：TM712[电气工程—电力系统及自动化]