| 引用本文: | 郭宏光,吴庆范,黄金海,等.特高压直流输电线路间电磁耦合对电压突变量保护
影响的研究[J].电力系统保护与控制,2015,43(18):114-119.[点击复制] |
| GUO Hongguang,WU Qingfan,HUANG Jinhai,et al.Study on the influence of electromagnetic coupling of UHVDC power transmission lines on the voltage derivative protection[J].Power System Protection and Control,2015,43(18):114-119[点击复制] |
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| 摘要: |
| 介绍了溪洛渡至浙江金华(简称宾金)特高压直流输电系统线路保护动作情况，指出直流线路间电磁耦合产生的扰动导致了非故障极电压突变量保护动作。建立了特高压直流输电线路电磁耦合分析的电路模型，推导出解析方程，并对电磁耦合机理和扰动特征进行了深入的研究。经过RTDS仿真，分析了区内、区外故障时的直流电压波形特征，提出了电压突变量保护功能的优化策略。新的保护逻辑通过仿真试验，验证了其可行性和可靠性。 |
| 关键词: 特高压直流 电磁耦合 电压突变量 仿真试验 策略 |
| DOI：10.7667/j.issn.1674-3415.2015.18.019 |
| 投稿时间：2014-11-25修订日期：2015-01-26 |
| 基金项目:特高压直流双极输电线路间相互感应对控制保护系统的影响及对策研究(XT71-15-049) |
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| Study on the influence of electromagnetic coupling of UHVDC power transmission lines on the voltage derivative protection |
| GUO Hongguang,WU Qingfan,HUANG Jinhai,LI Shaohua,LU Yajun,ZHANG Ailing,LI Tai |
| (XJ Electric Co., Ltd., Xuchang 461000, China;State Power Economic Research Institute, Beijing 100052, China) |
| Abstract: |
| This paper introduces the line protection action of UHVDC power transmission project from Xiluodu to Zhejiang Jinhua (abbr. Bin-Jin), and points out that the disturbance of DC lines electromagnetic coupling causes non-fault pole voltage derivative protection action. The circuit model for electromagnetic coupling analysis of UHVDC power transmission lines is explored. The analytic equation is deduced and the electromagnetic coupling mechanism and disturbance characteristics are studied in depth. The optimization strategy of voltage derivative protection function based on the RTDS simulation and the analysis of DC voltage waves characteristics in external and internal faults are proposed. The new protection logic verifies its feasibility and reliability through the simulation test. |
| Key words: UHVDC electromagnetic coupling voltage derivative simulation test strategy |
