| 分相电流差动线路保护中零序差动作用分析 |
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| 引用本文： | 文明浩,李瑞生,王强,王尔寒,胡叶宾,桑仲庆. 分相电流差动线路保护中零序差动作用分析[J]. 电力系统保护与控制, 2002, 30(12): 42-44 |
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| 作者姓名： | 文明浩 李瑞生 王强 王尔寒 胡叶宾 桑仲庆 |
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| 作者单位： | 1.华中科技大学电气与电子工程学院，湖北 武汉 430074;2.许继集团，河南 许昌 461000 |
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| 摘 要： | 分相电流差动保护装置中一般都配置零序差动保护 ,目的是为了提高保护装置的耐过渡电阻能力。经分析表明 ,零序差动保护并不比故障分量差动保护的灵敏度高 ,并且其整定需躲过外部三相短路时的不平衡电流。零序电流差动保护对整个保护装置的灵敏度和动作速度均没有实质性的提高
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| 关 键 词： | 零序电流差动 分相电流差动 故障分量差动 继电保护 |
| 文章编号： | 1003-4897(2002)12-0042-03 |
| 修稿时间： | 2002-06-21 |
Analysis of zero sequence current differential protection in phase segregated current differential protection for transmission lines |
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| WEN Ming hao ,LI Rui_sheng ,WANG Qiang. Analysis of zero sequence current differential protection in phase segregated current differential protection for transmission lines[J]. Power System Protection and Control, 2002, 30(12): 42-44 |
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| Authors: | WEN Ming hao LI Rui_sheng WANG Qiang |
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| Affiliation: | WEN Ming hao 1,LI Rui_sheng 2,WANG Qiang 2 |
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| Abstract: | Zero sequence current differential protection is expected to improve the performance under high resistance earth fault conditions in phase segregated current differential protection for transmission lines.The results of studies indicate that fault component based differential protection is more sensitive than zero sequence current differential protection.Sets of zero sequence current diifferential protection have to avoid external three phase fault imbalance current. The performance of sensitivity and trip time can not be improved by zero sequence current differential protection. |
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| Keywords: | zero sequence current differential protection phase segregated current differential protection fault component based differential protection relay protection |
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