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山西电网直流绝缘监测仪运行情况分析 被引量:1

Analysis of DC Insulation Monitor Operating in Shanxi Electric Network
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摘要 指出系统的绝缘状况对继电保护和变电站的安全稳定运行起着非常重要的作用,绝缘监测装置是检测变电站直流电源系统绝缘状况的重要设备,通过对山西电网部分变电站绝缘监测仪现场校验的测试数据进行分析,发现绝缘监测仪存在电压波动、无两极接地检测功能、装置自带较大对地电容、高阻接地时正负极对地电压偏差过大等问题,提出解决措施。 The state.of insulation plays an essential role in relay protection and the stable operation of substation. Insula- tion monitoring device is key for testing the insulation status of DC power system in substation. Based on the analysis of the data from on site calibration of insulation monitors in some of the substations of Shanxi Grid, it is found that there are some problems on the insulation monitors, involving voltage fluctuation, non-polarized grounding detection, installation of a larger built to-ground capacitance, the deviation of positive-and-negative-to-ground voltage being too large and so on, and the solu- tions thereof are proposed.
作者 尉镔
机构地区 山西省电力公司
出处 《山西电力》 2010年第2期18-20,23,共4页 Shanxi Electric Power
关键词 绝缘监测仪 校验 两极接地 对地电压波动 对地分布电容 insulation monitor check bipolar grounding voltage fluctuations to ground distributed capacitance to ground
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