基于PMU和FI协同的配电网故障测距方法

张百驰; 林俊杰; 江昌旭; 邵振国; 方陈; 魏新迟

doi:10.19912/j.0254-0096.tynxb.2023-1367

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (12) : 659-666. DOI: 10.19912/j.0254-0096.tynxb.2023-1367

基于PMU和FI协同的配电网故障测距方法

张百驰¹, 林俊杰¹, 江昌旭¹, 邵振国¹, 方陈², 魏新迟²

作者信息 +

FAULT LOCATION METHOD FOR DISTRIBUTION NETWORK BASED ON PMU AND FI

Zhang Baichi¹, Lin Junjie¹, Jiang Changxu¹, Shao Zhenguo¹, Fang Chen², Wei Xinchi²

Author information +

文章历史 +

摘要

基于故障指示器（FI）和同步相量测量单元（PMU）两种量测设备的特点和优势,提出一种基于PMU和FI协同的配电网故障测距方法。首先,利用电力系统网络拓扑结构建立关系矩阵,根据FI的报警信息以及故障电流流向建立报警向量,由两者对应关系求解故障区段。其次,利用PMU配置节点量测数据与线路参数信息推算故障区段的节点电量数据。最后,对故障区段外电路进行等效,根据区段节点数据的完整性,选择单端阻抗法或双端阻抗法求解故障距离,实现故障精确定位。仿真试验表明,针对短路故障情况,所提方法基本不受故障位置、故障类型、过渡电阻的影响,具有较高的测距精度。

Abstract

This article proposes a fault location method for distribution networks based on the characteristics and advantages of two measurement devices： fault indicators （FIs） and phasor measurement units （PMUs）. Firstly, a relationship matrix is established based on the power system's network topology. The alarm vector is constructed using the alarm information from the FIs and the fault current direction, and the fault section is determined by solving the correspondence between the two. Secondly, the data of the voltage and current at both ends of the fault section are estimated by combining the PMU-configured node data and line parameters. Finally, the external circuits of the fault section are equivalently represented, and depending on the completeness of the node data, either the single-end impedance method or the double-end impedance method is selected to determine the fault distance, achieving accurate fault location. The simulation results show that the proposed method achieves high accuracy in short-circuit fault location under different fault locations, fault types, and transition resistance values.

导出引用

张百驰, 林俊杰, 江昌旭, 邵振国, 方陈, 魏新迟. 基于PMU和FI协同的配电网故障测距方法[J]. 太阳能学报. 2024, 45(12): 659-666 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1367

Zhang Baichi, Lin Junjie, Jiang Changxu, Shao Zhenguo, Fang Chen, Wei Xinchi. FAULT LOCATION METHOD FOR DISTRIBUTION NETWORK BASED ON PMU AND FI[J]. Acta Energiae Solaris Sinica. 2024, 45(12): 659-666 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1367

中图分类号： TM726

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