| 基于电容分压的电力变压器套管绝缘在线检测的研究 |
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| 引用本文： | 刘云鹏,律方成,李成榕,王胜辉. 基于电容分压的电力变压器套管绝缘在线检测的研究[J]. 高压电器, 2004, 40(2): 121-123 |
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| 作者姓名： | 刘云鹏 律方成 李成榕 王胜辉 |
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| 作者单位： | 华北电力大学电力工程系,河北,保定,071003;华北电力大学电力工程系,河北,保定,071003;华北电力大学电力工程系,河北,保定,071003;华北电力大学电力工程系,河北,保定,071003 |
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| 摘 要： | 在线检测变压器高压套管的介质损耗是判断其绝缘状况的有效手段。笔者通过与套管末屏串联的分压电容提取工频电压信号,采用绝对测量和相对测量相结合的方法准确地测量了套管的介质损耗,并应用传输线理论分析了其误差特性。现场运行证明,该方法是有效的。
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| 关 键 词： | 高压套管 介质损耗 在线检测 电容分压 |
| 文章编号： | 1001-1609(2004)02-0121-03 |
On-line Monitoring Transformer's Bushing Insulation Based on Its Tap Capacitive Divider |
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| LIU Yun-peng,LU Fang-cheng,LI Cheng-rong,WANG Sheng-hui. On-line Monitoring Transformer's Bushing Insulation Based on Its Tap Capacitive Divider[J]. High Voltage Apparatus, 2004, 40(2): 121-123 |
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| Authors: | LIU Yun-peng LU Fang-cheng LI Cheng-rong WANG Sheng-hui |
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| Abstract: | On-line monitoring the dielectric loss of power transformer bushing has been proven to be effective tool in evaluating the condition of its insulation. The measured signal is abstracted from capacitor, which is in series with the bushing tap. In this paper, the absolute and relative methods are combined, and the phase error in transmission process is analyzed based on transmission line theory. Field monitoring result shows that this method is effective. |
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| Keywords: | power transformer's bushing dielectric loss on-line monitoring capacitve divider |
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