220kV电网电流行波测距装置的优化布点方法  

Optimal Placement of Traveling Wave Current Fault Location Devices in 220 k V Power Grid

作　　者：张广斌[1] 束洪春[2] 于继来[1] 孙向飞[2] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001 [2]昆明理工大学电力工程学院,云南省昆明市650500

出　　处：《中国电机工程学报》2014年第34期6246-6253,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(U1202233;51267009;51007035)~~

摘　　要：220 k V电网的站、线数量较多,电网拓扑复杂,如何经济、合理地配置220 k V线路的故障行波测距装置,实现故障测距功能的全覆盖,具有重要意义。该文分析线路故障电流行波可测性,采用扩展邻接矩阵对输电网各回线路和站际间的连接关系进行抽象。以工程实际条件与可测性分析结果相结合作为必要的附加条件,将电流行波测距装置在电网的优化布置抽象为含不等式和等式约束的线性0-1规划模型,进而确定模型参数与电网拓扑参数的关系及模型求解方法,获得行波测距装置的全网最优静态布置方案。在此基础上,以每退出一套行波测距装置导致单、双端测距原理所减少的直接与间接可测线路的加权长度最小为依据,确定行波测距装置的动态装设顺序。并以某220 k V实际电网为例,验证所提算法的可行性及有效性。It is important to equip all the 220 kV transmission lines with travelling wave devices economically and feasibly, and realize the full coverage of the fault location method, since there are more substations and lines, and the topology is also more complex in 220 kV power grid. In this paper, the observability of fault induced current traveling waves of the transmission lines was analyzed, and extended adjacency matrix was used to describe the relationship among the lines and substations in power grid. The optimal placement of traveling wave devices was expressed as linear 0-1 integer programming model including inequality and equality constraint conditions, considering the limitation of practical engineering and results of the observability analysis. The parameters and solution method of the model can be determined and the static optimal placement of the global power grid can be obtained by solving the model. Based on the static optimal solution, the dynamic sequence of the each device installation can be determined, according to the minimum decreasing weighted observable length of the lines by single and double ended fault location principles caused by each device retreat. The proposed method is proven to be feasible and effective by tests considering certain actual 220 kV power grid optimal placement.

关 键 词：行波测距 可观测性分析 布点优化 0-1规划 扩展邻接矩阵 加权可测线长 

分 类 号：TM77[电气工程—电力系统及自动化]