| 高压电容器不平衡保护的相关问题 |
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| 引用本文： | 余江,周红阳,赵曼勇.高压电容器不平衡保护的相关问题[J].电力系统自动化,2006,30(13):85-89. |
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| 作者姓名： | 余江 周红阳 赵曼勇 |
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| 作者单位： | 南方电网电力调度通信中心,广东省,广州市,510623;南方电网电力调度通信中心,广东省,广州市,510623;南方电网电力调度通信中心,广东省,广州市,510623 |
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| 摘 要： | 电容器不平衡保护直接反应电容器内部元件的损坏情况，是高压电容器保护中最重要的保护功能之一。文中结合南方电网平果／河池／百色串补及天广／高肇直流工程实际，分析了电容器不平衡保护中的电流互感器的配置、选型及匹配问题，总结、比较了目前普遍使用的高压电容器不平衡检测原理以及不平衡保护定值计算中需要注意的问题。
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| 关 键 词： | 不平衡保护 电容器 变比校正系数 过电压 比值检测法 脉冲检测法 |
| 收稿时间： | 2005-09-13 |
| 修稿时间： | 2005-09-132006-01-11 |
Related Problems of Unbalance Protection for High Voltage Capacitor |
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| YU Jiang,ZHOU Hongyang,ZHAO Manyong.Related Problems of Unbalance Protection for High Voltage Capacitor[J].Automation of Electric Power Systems,2006,30(13):85-89. |
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| Authors: | YU Jiang ZHOU Hongyang ZHAO Manyong |
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| Affiliation: | Dispatching Center of China Southern Grid Co Ltd, Guangzhou 510623, China |
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| Abstract: | Unbalance protection is one of the most important protection /unctions in the high voltage capacitor protection scheme. It can reflect the faulty capacitor element directly. Based on the real projects in Southern Grid, such as Pingguo TCSC, Hechi FSC, Baise FSC, Tianguang HVDC and Guiguang HVDC project, this paper analyzes the related problems of capacitor unbalance protection, such as current transformer connection, type selection and the match problem. The unbalance detection principles are summed up and compared. Problems that should be considered in setting calculation are also described. |
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| Keywords: | unbalance protection capacitor ratio correction factor (RCF) over-voltage ratio detection pulse detection |
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