基于峰组合的馈线故障区段定位新方法

Novel Method for Fault Section Location of Feeder Based on Peak-combination

针对配电网故障区段定位中出现的多区段故障、故障信息采集设备拒动或误动等问题,提出了一种基于峰组合的馈线故障区段定位新方法。将具有局部最大故障解释可信度的区段定义为峰,研究了各种峰组合的特点;将峰组合的扩展限制在评估峰组合范围内,给出了一种从k-1峰的评估峰组合快速递推到k峰的评估峰组合的实用方法。实验证明,所提方法比统一矩阵算法有更大的容错能力,比智能优化算法有更快的计算速度。

A novel method for fault section location of feeder based on peak-combination is proposed to solve the problems of fault section location in power distribution network,such as multi-section fault,refusal-operation or mal-operation of fault information acquisition equipment.First,the section with the maximum local fault explanatory credibility is defined as peak.Then,the characteristics of various peak-combinations are studied,and the extension of peak-combinations is limited to the range of evaluable peak-combinations.Meanwhile,an efficient method is proposed to recursively calculate the evaluable k peak-combination from that of(k-1)at a fast speed.The results of some examples show that the proposed method is more fault-tolerant than the unified matrix algorithm,and it is faster than the intelligent optimization algorithm.