Ground-Fault Feeder Detection With Fault-Current and Fault-Resistance Measurement in Mine Power Systems
Ground-Fault Feeder Detection With Fault-Current and Fault-Resistance Measurement in Mine Power Systems
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DOI：
10.1109/tia.2008.916744
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发表时间：
2008-03
影响因子：
4.4
通讯作者：
Xiangjun Zeng;K. Li;W. L. Chan;Sheng Su;Yuanyuan Wang
中科院分区：
文献类型：
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作者：
Xiangjun Zeng;K. Li;W. L. Chan;Sheng Su;Yuanyuan Wang
许多矿井电力系统采用浮动中性点或高电阻接地，接地故障电流不超过几十安培。传统的基于零序电流的接地故障检测方法在这种情况下灵敏度较差。针对此问题，本文提出了一种结合故障电流和故障电阻测量的故障检测方案，该方案能够检测高阻抗接地故障。该方案已通过电磁暂态程序仿真验证，并在实验室开发和测试的故障检测原型。结果表明，该方案具有较高的灵敏度和鲁棒性.
Many mine power systems operate with a floating neutral or are high-resistance grounded, and earth fault current is no more than a few tens of amperes. Traditional earth-fault-detection methods based on zero-sequence current have poor sensitivity in this case. For improvement, a fault-detection scheme with fault-current and fault-resistance measurement is presented in this paper, which is capable of detecting high-impedance ground faults. The scheme has been verified by electromagnetic-transient-program simulation, and a fault-detection prototype has been developed and tested in the laboratory. Results show that the scheme has high sensitivity and robustness.