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| 直流系统绝缘监测综合判据 | |
| 引用本文： | 贾秀芳,赵成勇;李 黎;陈 恺.直流系统绝缘监测综合判据[J].电力系统自动化,1999,23(16):47-49. |
| 作者姓名： | 贾秀芳 赵成勇;李 黎;陈 恺 |
| 作者单位： | 1. 淮北市供电局,235000,安徽淮北 2. 山西朔州供电公司,238500,朔州 3. 湖北鄂州供电局,436000,鄂州 |
| 摘 要： | 分析了现有的检测直流系统接地故障方法存在的死区，包括绝比监测装置发出接地信号时最大接地电阻值，以及直流系统分布电容对变频控制原理查接故障的影响。建议用综合判据，即通过检测正负极母线电压、检测正负极绝缘电阻、检测支路漏电流来监视及查找直流系统接地故障。基于该判据的样机经现场试运行，性能良好。 |
| 关 键 词： | 直流系统 绝缘检测 综合判据 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
SYNTHESIZED CRITERIA OF DC SYSTEM INSULATION MONITORING AND DETECTING |
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| Jia Xiufang,Zhao Chengyong,Li Li,Chen Kai.SYNTHESIZED CRITERIA OF DC SYSTEM INSULATION MONITORING AND DETECTING[J].Automation of Electric Power Systems,1999,23(16):47-49. | |
| Authors: | Jia Xiufang Zhao Chengyong Li Li Chen Kai |
| Affiliation: | SYNTHESIZED CRITERIA OF DC
SYSTEM INSULATION MONITORING AND DETECTING
Jia Xiufang, Zhao Chengyong (North China Electrical Power University, 071003, Baoding, China);Li Li (Suozhou Power Supply Company, 238500, Suozhou, China);Chen Kai (Ezhou Power Supply Company, 436000, Ezhou, China) |
| Abstract: | The shortcomings of the present method for detecting earth fault in DC system are analyzed. The maximum earth resistance value is discussed while a warning signal is sent out from insulation monitoring apparatus, as well as effect of distributed capacitance on detecting earth fault in DC system by frequency conversion principle. The recommended synthesized criteria on monitoring and detecting earth fault in DC system are: detecting positive pole and negative pole bus voltages, insulation resistance and branch's leakage currents. The insulation monitoring apparatus based on the proposed synthesized criteria has been put into operation and has good performance. |
| Keywords: | DC system insulation monitoring synthesized criteria |
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