| 复合阻抗对接地距离保护的影响 |
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| 引用本文： | 潘露,吕艳萍,于芳,王汉斌.复合阻抗对接地距离保护的影响[J].电力系统保护与控制,2006,34(10):1-3,31. |
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| 作者姓名： | 潘露 吕艳萍 于芳 王汉斌 |
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| 作者单位： | 武汉大学电气工程学院 湖北武汉430072 |
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| 摘 要： | 复合阻抗安装在光纤复合架空地线OPGW(Optical F iber Composite Overhead G round W ires)与地之间用于减少逐杆接地OPGW上的能量损耗。在说明复合阻抗导通后对系统零序阻抗产生影响的基础上,更进一步地分析了由于系统零序阻抗变化而造成的对接地距离保护的影响,然后提出了相应的改进措施,最后结合一条220 kV实际线路验证了分析结论。
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| 关 键 词： | 复合阻抗 光纤复合架空地线 零序阻抗 接地距离保护 |
| 文章编号： | 1003-4897（2006）10-0001-03 |
| 收稿时间： | 2005-11-07 |
| 修稿时间： | 2005-11-072005-12-07 |
Influence on ground distance protection due to the composite impedances |
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| Affiliation: | School of Electrical Engineering, Wuhan University, Wuhan 430072, China |
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| Abstract: | In order to reduce the power loss of OPGW installed tower-by-tower,composite impedances are installed between OPGW and ground.After analyzing the influence on zero-sequence parameters due to the composite impedances,this paper points out that the ground distance protection will be influenced as a result of the numbers of composite impedance switched on.Then a measure is put forward in order to reduce the influence.Finally,the analysis result has been proved sauisfactory by a real 220 kV system. |
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| Keywords: | composite impedance OPGW zero-sequence impedance ground distance protection |
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