环状多源配电网中考虑扰动源定位的PQM优化配置

摘要

兼顾网络化电能质量监测系统(NPQMS)构建成本和电能质量扰动源(PQDS)定位需求,提出了一种适用于环状多源配电网络的电能质量监测器(PQM)优化配置方法.通过分析环状多源配电网络拓扑结构特点,定义了系统结构信息描述矩阵、PQM配置一般性准则以及对应于不同属性端点的权重因子,建立PQM优化配置模型,并通过监测可观矩阵检验系统模糊度,筛选出最优的PQM配置方案.与通用PQDS定位方法中拓扑结构正方向的匹配性定义,保证了基于PQM优化配置结果实现PQDS精确定位的可行性,且可为采用阶段式NPQMS构建方案提供PQM最优配置决策依据.以IEEE-14节点环状多源配电系统为例,验证了所提PQM优化配置方法的可行性和有效性.%In view of the construction cost of networked power quality monitoring system (NPQMS) and the location requirement of power quality disturbance source (PQDS), a method for optimal allocation of power quality monitors (PQM) in meshed multiple-source distribution networks is proposed.Through characteristics analysis of the topology of meshed multiple-source networks, the matrixes of structure information is described, general principles of PQM allocation and weighted factors corresponding to different endpoints are defined.With establishing of the optimal model of the optimum allocation for monitoring points, the optimum position monitoring arrangement can be obtained by inspecting the system ambiguity through monitoring observability matrix.The definition of positive direction in this method matches with that in the general methods for PQDS location, which makes the accurate location of the PQDS feasible which based on the results of the optimization allocation of PQM.It can also offer decision support to the stagewise construction scheme of the NPQMS.Finally, with the example of the IEEE 14-bus system, the feasibility and validity of the presosed method are demonstrated.