| 多判据融合的CVT谐波测量误差现场验证方法 |
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| 引用本文： | 梁纪峰,何瑞东,焦亚东,周文,杨柳,路艳巧.多判据融合的CVT谐波测量误差现场验证方法[J].电力电容器与无功补偿,2021,42(2):59-64. |
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| 作者姓名： | 梁纪峰 何瑞东 焦亚东 周文 杨柳 路艳巧 |
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| 作者单位： | 国网河北省电力有限公司电力科学研究院,石家庄 050021;国网河北省电力有限公司,石家庄 050023;安徽武怡电气科技有限公司,合肥 230031;国家电网有限公司,北京 100031 |
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| 基金项目： | 国家电网公司总部科技项目 |
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| 摘 要： | 随着电能质量监测和管理工作的持续深入,高压电网中广泛运行的电容式电压互感器(capacitor voltage transformer,CVT)所造成的谐波测量误差问题已不可回避。文中首先基于CVT谐波等值模型研究了其谐波测量误差产生的根本原因,并构建了涵盖多电压等级CVT谐波测量误差高压智能试验平台,深入开展多项测量试验内容,以对比分析不同CVT谐波测量误差的差异性。其次,基于试验结果提出适用于变电站现场运行CVT谐波测量误差的多判据融合验证方法。最后,据此设计了某220kV变电站的监测方案,分析结果表明该方法能够有效地判断CVT谐波测量误差。
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| 关 键 词： | 电能质量监测 电容式电压互感器 谐波 误差试验 多判据融合 |
Field Verification Method of Harmonic Measurement Error of CVT Based on Multi-criteria Fusion |
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| LIANG Jifeng,HE Ruidong,JIAO Yadong,ZHOU Wen,YANG Liu,LU Yanqiao.Field Verification Method of Harmonic Measurement Error of CVT Based on Multi-criteria Fusion[J].Power Capacitor $ Reactive Power Compensation,2021,42(2):59-64. |
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| Authors: | LIANG Jifeng HE Ruidong JIAO Yadong ZHOU Wen YANG Liu LU Yanqiao |
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| Affiliation: | (State Grid Hebei Electric Power Research Institute,Shijiazhuang 050021,China;State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050023,China;Anhui Wuyi Electrical Technology Co.,Ltd.,Hefei 230031,China;State Grid Energy Research Institute Co.,Ltd.,Beijing 100031,China) |
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| Abstract: | With the continuous deepening of power quality monitoring and management,the issue of harmonic measurement error due to capacitor voltage transformer(CVT),which is operated widely in the high-voltage power grid,is unavoidable.In this paper,the root cause harmonic measurement error of CVT is studied by the harmonic equivalent model so to compare and analyze the difference of harmonic measurement error of different CVT.Secondly,the multi-criteria fusion verification method which is suitable for the harmonic measurement error of the site operating CVT of substation is proposed based on the test result.Finally,the monitoring scheme of certain 220 kV substation is designed on this basis.It is shown by the analysis result that the method can effectively judge the harmonic measurement error of CVT. |
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| Keywords: | power quality monitoring capacitor voltage transformer harmonic error test multi-criteria fusion |
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