| 微机2保护对高阻接地故障的运作行为分析 |
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| 引用本文： | 蔡美杰.微机2保护对高阻接地故障的运作行为分析[J].电网技术,2000,24(3):32-34. |
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| 作者姓名： | 蔡美杰 |
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| 作者单位： | 福建省电力试验研究所 |
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| 摘 要： | 当发生高阻间断性接地故障时 ,由于存在寄生电压 ,引起线路微机高频保护不能及时动作出口 ,导致停电范围进一步扩大的事故 ,时有发生 ,严重影响了安全运行。通过对一个具体事故动作过程的分析 ,对保护装置的检查试验和对故障报告与程序的理论研究 ,找出了问题产生的原因以及应对办法。
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| 关 键 词： | 高阻接地 微机保护 线路保护 距离保护 动作阈值 |
ANALYSIS ON PERFORMANCE OF MICROCOMPUTER BASED PROTECTIVE RELAYING UNDER HIGH RESISTANCE GROUNDING FAULT |
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| CAI Mei,jie.ANALYSIS ON PERFORMANCE OF MICROCOMPUTER BASED PROTECTIVE RELAYING UNDER HIGH RESISTANCE GROUNDING FAULT[J].Power System Technology,2000,24(3):32-34. |
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| Authors: | CAI Mei jie |
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| Abstract: | When high resistance grounding fault occurs because of existence of the stray voltage in protective circuit the microcomputer based high frequency protective device installed in Shuikou Power Plant cannot operate correctly, thus, the power supply interruption region is spread and the power system security is affected. Through the theoretical analysis on fault record and after the check and test of protective device, the reason causing the stray voltage and the countermeasure are found. |
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| Keywords: | high resistance grounding fault microcomputer based protective device threshold zero sequence voltage |
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