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Jinchang Electric Power Company, State Grid Gansu Electric Power Company, Gansu Jinchang 737100, China
Received：23 November 2025，
Revised：2025-12-07，
Published：25 February 2026
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ZHANG Hongwei. Research on the Influence of Capacitive Resistive Connection Piece on Harmonic Components of DC Voltage Divider[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(1): 72-80.
ZHANG Hongwei. Research on the Influence of Capacitive Resistive Connection Piece on Harmonic Components of DC Voltage Divider[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(1): 72-80. DOI： 10.14044/j.1674-1757.pcrpc.2026.01.010.
阻容式直流分压器谐波分量监测依靠高、低压臂电容部分来实现，当低压臂阻容连接片断裂造成电容器开路，会导致交直流电压谐波分量异常。文章分析了±800 kV特高压直流换流站极母线阻容式直流分压器谐波分量异常增大的故障机理，通过解体检查、仿真分析、材料检测分析等技术手段验证了谐波分量与低压臂电容器开路间的关联关系，提出了针对性防范措施，对阻容式直流分压器设计制造、运行监控、检修维护特别是阻容连接片实时状态、监测等领域具有重要的参考、借鉴和指导意义。
The monitoring of harmonic components in a resistive capacitive DC voltage divider relies on the capacitance section of high and low voltage arms. The breakage of the resistive capacitive connection piece of the low voltage arm can cause an open circuit in the capacitor and lead to abnormal harmonic components in the AC and DC voltage. In this paper，the fault mechanism of abnormal increase in the pole bus resistive capacitive DC voltage divider of ± 800 kV ultra-high voltage DC converter station is analyzed.The correlation between harmonic components and open circuit of low-voltage arm capacitors is verified through disassembly inspection，simulation analysis，material detection analysis and other technical means.Moreover， the specific preventive measures are proposed，which have important reference，reference value and guidance significance for the design，manufacturing，operation monitoring，maintenance，especially the real-time status and monitoring of resistive capacitive connection piece of resistive capacitive DC voltage dividers.
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