| 电容式电压互感器绝缘在线监测系统设计与应用 |
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| 引用本文： | 黄嘉鹏,陈贤顺,张福州,李涛.电容式电压互感器绝缘在线监测系统设计与应用[J].电测与仪表,2016(Z1):33-37. |
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| 作者姓名： | 黄嘉鹏 陈贤顺 张福州 李涛 |
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| 作者单位： | 1. 国网四川省电力公司计量中心,成都,610045;2. 福建亿榕信息技术有限公司,福州,350003 |
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| 基金项目： | 国家电网公司研究开发费资助项目(521999150030) |
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| 摘 要： | 为保障电容式电压互感器(Capacitor Voltage Transformer,CVT)的安全可靠运行,设计了绝缘在线监测系统。给出了CVT在线监测方案,建立了CVT等值电路,推导了介质损耗角正切值和电容量的计算公式,详细阐述了绝缘在线监测系统的设计,包括:电流信号采集电路、电压信号采集电路和A/D采样电路等。该监测系统已经在四川某500k V变电站进行了挂网运行,在线监测结果验证了在线监测系统监测的准确性和有效性。
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| 关 键 词： | 电容式电压互感器(CVT) 在线监测 介质损耗 |
Design and application of on-line monitoring system for capacitor voltage transformer |
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| Abstract: | In order to ensure capacitor voltage transformer(CVT) in safe operation, an on-line monitoring system has been designed. In this paper, on on-line monitoring program is given and equivalent circuit of CVT is established. Calc-ulation formula of dielectric loss factor and capacity for CVT are deduced. Design of on-line monitoring system for ins-ulating property is in detail introduced, including current signal acquisition circuit, voltage signal acquisition circuit and A/D sampling circuit. The on-line monitoring system has been applicated to 500kV substation in Sichuan. The accuracy and effectiveness of the online monitoring system monitoring are verified by monitoring results. |
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| Keywords: | Capacitor Voltage Transformer on-line monitoring dielectric loss factor |
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