| 大型电力变压器局部放电在线监测系统的研制 |
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| 引用本文： | 周晓霞,黎文安,文武.大型电力变压器局部放电在线监测系统的研制[J].机电工程技术,2012(4):9-12. |
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| 作者姓名： | 周晓霞 黎文安 文武 |
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| 作者单位： | 1. 重庆电力公司教育培训中心,重庆400053
2. 武汉大学电气工程学院,湖北武汉430072 |
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| 摘 要： | 阐述了变压器局部放电监测的重要性,介绍了大型电力变压器局部放电在线监测系统的系统组成及各组成部分的功能,提出了模拟信号预处理电路结构的设计方案,分别说明了固定增益放大电路、程控增益放大电路、微调放大电路、滤波电路的电路设计方法,并简单介绍了以ARM为核心的现场监测单元的组成。
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| 关 键 词： | 变压器 局部放电 超声波检测 宽带电流互感器 |
Development of Online System Monitoring Partial Discharge Occurred in Huge Transformer |
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| ZHOU Xiao-xia,LI Wen-an,WEN Wu.Development of Online System Monitoring Partial Discharge Occurred in Huge Transformer[J].Mechanical & Electrical Engineering Technology,2012(4):9-12. |
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| Authors: | ZHOU Xiao-xia LI Wen-an WEN Wu |
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| Affiliation: | 1.Education ＆Training Center of Chongqing Electric power corporation,Chongqing400053,China;2.Wuhan University,Wuhan 430072,China) |
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| Abstract: | It is important to monitor the partial discharge occurred in transformer.In this paper,an online system monitoring the partial discharge occurred in huge transformer is presented.The functions of each parts of the system are described,the designing scheme of the circuit preprocessing analog signals is proposed,the amplifying circuit with a fixed ratio of output to input,the amplifying circuit with a program-controlled ratio of output to input,a mini-modulating amplifying circuit and a filter circuit are given.A brief introduction to the composition of on-site monitoring unit is based on ARM core. |
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| Keywords: | transformer partial discharge ultrasonic testing wideband current transformer |
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