| 放电线圈引起电容器组不平衡电流保护动作分析 |
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| 引用本文： | 何建龙,张少江,郑歆,王争,张泉.放电线圈引起电容器组不平衡电流保护动作分析[J].电力电容器与无功补偿,2020(2):8-12. |
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| 作者姓名： | 何建龙 张少江 郑歆 王争 张泉 |
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| 作者单位： | ;1.天津送变电工程有限公司 |
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| 摘 要： | 为保证高压并联电容器组能够安全可靠运行,解决由于放电线圈自身缺陷、使用不当、并发性故障等产生不平衡电流的问题,着重研究放电线圈对单星形桥式并联电容器组不平衡电流保护的影响。具体分析了不平衡电流保护原理,阐述了放电线圈的作用,并仿真验证放电线圈故障引起不平衡电流保护动作的原理。通过实际案例具体阐述了保护动作后故障分析的方法,提出了故障定位和常规试验的建议。
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| 关 键 词： | 并联电容器组 放电线圈 单星形桥式 不平衡电流 |
Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil |
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| HE Jianlong,ZHANG Shaojiang,ZHENG Xin,WANG Zheng,ZHANG Quan.Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil[J].Power Capacitor $ Reactive Power Compensation,2020(2):8-12. |
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| Authors: | HE Jianlong ZHANG Shaojiang ZHENG Xin WANG Zheng ZHANG Quan |
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| Affiliation: | (Tianjin Power Transmission and Transformation Engineering Company,Tianjin 300250,China) |
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| Abstract: | In order to ensure safe and reliable operation of high voltage shunt capacitor banks and solve the problems of unbalanced current due to defects itself,improper use and concurrent faults of discharge coils,the influence of discharge coils on unbalanced current protection of single star bridge shunt capacitor banks is emphatically studied.The unbalanced current protection principle is analyzed specifically and the function of discharge coil is described.The principle of unbalanced current protection action due to discharge coil is verified by the simulation.The method on the fault analysis after the protection action is described by the actual case and the suggestion on fault location and common test is proposed. |
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| Keywords: | shunt capacitor bank discharge coil single-star bridge unbalanced current |
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