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配电网结构愈来愈复杂,传统故障定位算法存在局限性。文中提出一种适用于复杂配电网的故障定位方法,该方法根据故障时系统电压暂降特性,利用电能质量监测器采集到的信息,通过相关分析匹配度对配电网故障进行定位。IEEE 37节点及IEEE 13节点系统仿真表明,所述方法可有效防止误判。通过设置不同的负荷模型、过渡电阻、配变负载,对算法鲁棒性进行了验证并分析其抗差性,结果表明所述方法具备较好的鲁棒性与抗差性。
The structure of distribution network is more and more complicated, and the traditional fault location algorithm has its limitations. In this paper, a fault location method for complex distribution networks is proposed. Based on the voltage sag characteristics of the system during the fault, this method utilizes the information collected by the power quality monitor and locates the distribution network fault through the correlation analysis. The simulation results of IEEE 37-bus and IEEE 13-bus show that the method can effectively prevent misjudgment. By setting different load models, transition resistance and distribution load, the robustness of the algorithm is verified and its resistance is analyzed. The results show that the proposed method possesses good robustness and robustness.