| 特高压长线路电流差动保护自适应电容电流补偿方法 |
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| 引用本文： | 桑丙玉,王晓茹.特高压长线路电流差动保护自适应电容电流补偿方法[J].继电器,2010,38(8):1-5. |
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| 作者姓名： | 桑丙玉 王晓茹 |
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| 作者单位： | 1.西南交通大学电气工程学院，四川 成都 610031; 2.国网电力科学研究院，江苏 南京 210061 |
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| 基金项目： | 教育部直属高校聘请外籍教师重点资助项目 |
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| 摘 要： | 分析了线路电流差动保护中两端各补偿一半电容电流的传统补偿方法，指出该方法在区内故障时存在受故障点影响补偿不精确、降低灵敏度的缺点。提出了一种自适应电容电流补偿方法，在保证相同的区外故障可靠性基础上，大大提高了区内故障的灵敏度。对一条1000 kV线路故障和电流差动保护进行了仿真试验，证明该自适应补偿方法的有效性和正确性，适合作为特高压输电线路电流差动保护电容电流补偿方法。
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| 关 键 词： | 特高压 电流差动 电容电流 自适应补偿 灵敏度 |
Adaptive compensation scheme of capacitance current to differential protection in UHV lines |
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| SANG Bing-yu,WANG Xiao-ru.Adaptive compensation scheme of capacitance current to differential protection in UHV lines[J].Relay,2010,38(8):1-5. |
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| Authors: | SANG Bing-yu WANG Xiao-ru |
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| Affiliation: | 1.College of Electrical Engineering;Southwest Jiaotong University;Chengdu 610031;China;2.State Grid Electric Power Research Institute;Nanjing 210061;China |
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| Abstract: | The traditional capacitance current compensation is influenced by different fault locations and has lower sensitivity when internal faults occur in one end.An improved adaptive compensation scheme is proposed in this paper.The scheme combines the traditional compensation with compensation utilizing fault distance.The performances of two compensations are compared in the analytical way,showing that,when they have same security on external faults,the improved one has higher sensitivity when internal fault in ... |
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| Keywords: | UHV current differential capacitance current adaptive compensation sensitivity |
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