【作者】 王茜；

【导师】 黄伟； 张文斌；

【作者基本信息】 华北电力大学 ， 电气工程（专业学位）， 2015， 硕士

【摘要】 随着经济和社会的迅速发展,电力用户对供电可靠性的要求越来越高,“以客户为中心”提高供电可靠性已经成为国内供电企业的共识。有效利用配电网的典型网架结构自身的优势,提出配电网故障区段定位、隔离和供电恢复方法,实现快速、准确、高效的故障处理,对提高供电可靠性、提升供电企业服务质量有重要的现实意义。本文对配电网典型结构和模块划分进行了研究,建立了以模式化组为基本单元的网络模型。以馈线为对象,研究了配电网故障区段定位的基本原理,以及基于萤火虫算法的高容错性故障区段定位方法。其中,在萤火虫算法中建立了实用的初始化条件和符合数学模型的收敛判据。在对线路故障、重合闸和供电恢复时的多重故障信息充分利用的基础上,建立了配电网故障区段定位与隔离的流程,并通过算例验证该故障区段定位方法的有效性。基于以模式化组为基本单元的配电网模型,研究了健全区段模式化供电恢复策略及基于启发式搜索算法的供电恢复优化方法。在本文提出的启发式搜索算法中,以优先考虑模式化供电恢复为启发式规则,同时重视重要用户优先供电。在含有分布式电源的配电网供电恢复时,增加启发式规则,优先使用分布式电源进行供电,使得分布式电源在供电恢复中发挥重要作用。更多还原

【Abstract】 With the rapid socio-economic development, power users demand increasingly high reliability of power supply. Improving reliability has become the consensus of the domestic power companies. By leveraging the advantages of grid structures, the proposed distribution network fault location, isolation and restoration methods, can make troubleshooting more accurate and efficient. It is practically significant for improving the reliability of power supply and the service quality of power supply.In this paper, the typical distribution network structures and module division has been studied, and distribution network model is established based on model units, which is defined herein.The principles and method of distribution network fault location and isolation are studied. And taking the feeder as subject, a high fault tolerance fault location method is proposed based on firefly algorithm. The process of distribution network fault location and isolation is built using multiple fault information, and its effectiveness has been verified by examples.The method of distribution network sound sectors’ restoration, which is based on the typical power distribution grid structures, is studied. And an optimization method of restoration based on the heuristic search algorithm, is proposed. In this paper, the heuristic search algorithm, takes "modeled restoration method is used preferentially" as a heuristic rule, while ensuring that important users get priority to the power supply. In the distribution network containing DG, the priority use of DG for power supply is advocated, making the distributed power supply plays an important role in restoration.更多还原