| 并联电容器组中性线电流不平衡保护的分析研究 |
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| 引用本文： | 冯顺萍,刘文泽,蔡泽祥.并联电容器组中性线电流不平衡保护的分析研究[J].电力科学与工程,2010,26(2):47-50. |
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| 作者姓名： | 冯顺萍 刘文泽 蔡泽祥 |
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| 作者单位： | 华南理工大学电力学院,广东,广州,510640 |
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| 摘 要： | 采用双星形中性点不接地的并联电容器组,利用中性线不平衡电流信号容易实现微机保护。针对电容器组的电容元件击穿情况,根据电容器容量发生变化量,计算分析了中性线不平衡电流的变化规律。建立了电容元件击穿后仿真模型,并计算验证了理论分析。探讨了中性线电流不平衡保护的保护范围和整定值选取,为电容器组有效保护、快速动作提供保证。
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| 关 键 词： | 并联电容器组 中性线电流 不平衡 保护 仿真计算 |
Study on Neutral-line Unbalance Current Protection in Shunt Capacitor Bank |
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| Feng Shunping,Liu Wenze,Cai Zexiang.Study on Neutral-line Unbalance Current Protection in Shunt Capacitor Bank[J].Power Science and Engineering,2010,26(2):47-50. |
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| Authors: | Feng Shunping Liu Wenze Cai Zexiang |
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| Affiliation: | College of Electrical Engineering;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | Shunt capacitor bank at a 10 kV bus is the general compensation equipment using in the transmission and distribution of AC power grid.The shunt capacitor bank is widely used in a power substation with framed structure.The unbalance current of the neutral-line can be applied to protect the shunt capacitor with the double-star connection.According to the capacitor-unit breakdown condition,it was deduced the changing rule of the neutral-line unbalance current using the varied-capacitance of the capacitor bank.... |
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| Keywords: | shunt capacitor bank neutral-line current unbalance protection numerical calculation |
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