Reformation of distribution lines is one of the core tasks of energy planning.However,power supply departments are prone to focus only on aspect of problem in practical work and failed to achieve global optimization.A new decision method of medium-voltage distribution lines reform is proposed with consideration of line loss evaluation index.The line loss evaluation system including line structure,technical equipment and line economic operation indicator is developed based on comprehensive weights and fuzzy theory.In view of main factors influencing assessment,a fuzzy evaluation matrix is established through the up half trapezoidal membership function.Meanwhile,an integrated weight is derived by combing interval analytic hierarchy process and effect risk entropy-weight.Proposed route is assessed by using five kinds of evaluation methods for emergency order.Finally the established model is applied to line loss evaluation of medium voltage distribution power system,which could be the guidance for energy saving reconstruction and loss reduction.%配电线路改造是节能规划建设的重点内容之一.针对实际工作中供电部门存在的无法统筹整体而偏重于线路某一方面改造的问题,提出了一种计及线损评估指标的中压配电线路改造决策新方法.该方法构建了涵盖线路结构、技术装备以及线路经济运行等指标的线损评估指标体系,并用综合赋权和模糊综合法对拟改造线路进行决策排序.在评判决策中除了考虑影响线损评估各因素之外,还通过隶属度函数建立了模糊评判矩阵,同时利用区间层次分析法和效用风险熵权确定指标主客观权重.在此基础上对改造线路采取5种评价方式,实现对拟改造线路的紧急度排序.最后应用所提方法对某地区配电中压线路进行线损评估,以指导该地区节能降损改造.
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