| 煤矿低压选择性漏电保护拒动原因分析 |
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| 引用本文： | 耿祥标.煤矿低压选择性漏电保护拒动原因分析[J].煤炭技术,2011,30(3). |
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| 作者姓名： | 耿祥标 |
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| 作者单位： | 淮北矿业集团公司,桃园煤矿,安徽,宿州,234116 |
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| 摘 要： | 介绍了煤矿井下低压漏电保护从附加直流电源漏电保护到选择性漏电保护使用过渡中出现的问题,从单相接地故障电流的分布特点、零序功率方向保护原理、中性点不接地方式下中性点对地电流Ion分析了出现拒动、误动现象原因,并针对性地提出解决办法。
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| 关 键 词： | 煤矿低压电 选择性漏电保护 误动 |
Analysis on Rejected Causes in Coal Mine Low Voltage Selective Leakage Protection |
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| GENG Xiang-biao.Analysis on Rejected Causes in Coal Mine Low Voltage Selective Leakage Protection[J].Coal Technology,2011,30(3). |
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| Authors: | GENG Xiang-biao |
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| Affiliation: | GENG Xiang-biao(Taoyuan Coal Mine,Huaibei Mining Industry Group Comp.,Suzhou 234116,China) |
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| Abstract: | It is introduced that the problems in use and transition from the additional DC power supply leakage production to the selective leakage production in the low voltage leakage protection.The causes of refusing action and malfunction are analyzed according to the distribution of single plase fault current,the protective principle of zero sequence power direction,and the neutral ground current Ion under the way of insulated neutral.The special solutions are proposed. |
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| Keywords: | coal mine low voltage selective leakage protection misaction |
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