一种消除避雷器泄漏电流相间电容干扰的方法及系统
By acquiring the three-phase leakage current and line voltage waveforms of the surge arrester, establishing the interphase capacitance coupling relationship, and performing Fourier decomposition and decoupling, the error problem caused by interphase capacitance coupling is solved, and accurate measurement of leakage current is achieved.
CN116400158BActive Publication Date: 2026-07-17CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD
- Filing Date
- 2023-04-19
- Publication Date
- 2026-07-17
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Figure CN116400158B_ABST
Abstract
本发明公开了一种消除避雷器泄漏电流相间电容干扰的方法及系统，其中方法包括：获取避雷器三相泄漏电流波形以及对应的三相线路电压波形；基于相间电容耦合效应，建立所述三相泄漏电流波形以及所述三相线路电压波形的关系式；对所述关系式进行傅里叶分解，获取所述三相泄漏电流波形以及所述三相线路电压波形的基波分量，基于所述基波分量获取电流系数矩阵；将所述电流系数矩阵进行解耦，获取解耦后电流系数矩阵；基于所述解耦后电流系数矩阵与所述三相线路电压波形，获取三相泄漏电流真实波形。本发明提出一种利用避雷器三相泄漏电流基波分量和三相系统电压基波分量去除相间电容效应带来的测量干扰的方法，可实现泄漏电流幅值相位的准确校正。
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