Power distribution network arc fault positioning method and system based on operation state analysis

• Main Authors: ZHUO DINGMING, ZHONG ZHENXIN, HUANG RIGUANG, BAI HAO, XIAO XIAOHUI, CHEN WENQI, SHEN RUIXI, ZENG GUIHUI, WANG XIAOGUANG, LIU KANG, LIU YONGHUI, LAI YUJIE, LIAO SHENGTAO
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to the technical field of power distribution network arc fault positioning, and discloses a power distribution network arc fault positioning method and system based on operation state analysis, and the method comprises the steps: carrying out the recognition of an arc high-resistance grounding fault through zero-sequence current information, and achieving the accurate recognition of the arc fault; then fault positioning is carried out on the fault branch, so that rapid fault positioning can be realized; the technical problems that an existing impedance method seriously depends on the accuracy of system parameters and the accuracy of signal measurement, an arc high-resistance grounding fault cannot be processed, and then the operation stability of a power distribution network is affected are solved. 本发明涉及配电网电弧性故障定位技术领域，公开了基于运行状态分析的配电网电弧性故障定位方法和系统，首先通过所述零序电流信息展开电弧性高阻接地故障识别，可以实现对电弧性故障进行准确识别，然后再通过对故障支路进行故障定位，可以实现快速故障定位；解决了现有阻抗方法严重依赖于系统参数的准确性和信号测量准确度，并且无法处理电弧性高阻接地故障，进而影响配电网运行稳定性的技术问题。