| 变压器中性点运行方式对线路保护的影响 |
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| 引用本文： | 王 川,崔 勇,洪 浩.变压器中性点运行方式对线路保护的影响[J].水电能源科学,2012,30(12):167-169,151. |
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| 作者姓名： | 王 川 崔 勇 洪 浩 |
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| 作者单位： | 江西吉安供电公司， 江西 吉安 343009;华北电力大学 经济与管理学院， 北京 102206； 3． 河南兰考供电公司， 河南 兰考 475300;河南开封供电公司， 河南 开封 475004 |
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| 摘 要： | 针对电网事故或切换负荷后变电站的变压器中性点运行方式改变可能对接地距离保护和零序电流保护动作产生影响，通过变压器中性点不同运行方式下的相关线路保护定值整定计算和故障模拟，证明了变压器中性点运行方式的变化不会影响线路接地距离和零序电流保护可靠配合，可充分保障线路安全供电，同时说明了两种保护相互配合方案的实用性。
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| 关 键 词： | 中性点运行方式 接地距离保护 零序电流保护 配合方案 |
Influence of Neutral Point Operation Mode on Transmission Line Protection |
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| WANG Chuan,CUI Yong and HONG Hao.Influence of Neutral Point Operation Mode on Transmission Line Protection[J].International Journal Hydroelectric Energy,2012,30(12):167-169,151. |
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| Authors: | WANG Chuan CUI Yong and HONG Hao |
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| Abstract: | The change of neutral point operation mode of transformer in substation has possibly impact on the action of grounding distance protection and zero sequence current protection when the power grid accident or switching load appears. By calculating the relevant line protection setting and simulating fault under different operation mode of transformer neutral point, this paper proves that the transformer neutral point operation mode does not influence the reliable coordination of line grounding distance protection and zero sequence current protection, which can fully guarantee the safety lines of power supply. It also explains the practicability of two protection coordination schemes. |
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| Keywords: | neutral point operation mode grounding distance protection zero sequence current protection coordination scheme |
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