| 金属氧化物避雷器在线监测的谐波校正及研究 |
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| 引用本文： | 何贵先,行鸿彦,季鑫源,徐伟.金属氧化物避雷器在线监测的谐波校正及研究[J].电子测量与仪器学报,2017,31(10):1549-1554. |
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| 作者姓名： | 何贵先 行鸿彦 季鑫源 徐伟 |
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| 作者单位： | 1. 南京信息工程大学 气象灾害预报预警与评估协同创新中心 南京 210044;南京信息工程大学 中国气象局气溶胶与云降水重点开发实验室 南京 210044;2. 南京信息工程大学 气象灾害预报预警与评估协同创新中心 南京 210044 |
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| 基金项目： | 国家自然科学基金，江苏省高校自然科学研究重大项目，江苏省"六大人才高峰"计划和江苏省"信息与通信工程"优势学科资助 |
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| 摘 要： | 泄漏电流阻性分量是金属氧化物避雷器(MOA)在线监测的重要指标,传统的容性电流补偿算法并未考虑谐波电压的作用,对监测结果产生很大的误差。为解决该问题,利用电压过零时避雷器阻性电流与容性电流的关系求解避雷器晶介电容C,并推导了谐波电压下的容性电流补偿系数G,提出了一种金属氧化物避雷器在线监测的谐波电压校正方法,有效降低谐波电压对阻性电流提取的影响,提高避雷器阻性电流的提取精度。MATLAB仿真结果表明,通过MOA在线监测谐波校正方法,避雷器晶介电容C、基波阻性电流分量i_(R1)、3次谐波阻性电流分量i_(R3)误差均≤10%,有效地减小谐波电压给监测结果带来的影响,降低了阻性电流提取的误差,提高了避雷器在线监测结果的准确性。
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| 关 键 词： | 金属氧化物避雷器 谐波电压 阻性电流 在线监测 谐波校正 |
Harmonic correction and study for MOA on line monitoring algorithm |
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| He Guixian,Xing Hongyan,Ji Xingyuan and Xu Wei.Harmonic correction and study for MOA on line monitoring algorithm[J].Journal of Electronic Measurement and Instrument,2017,31(10):1549-1554. |
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| Authors: | He Guixian Xing Hongyan Ji Xingyuan and Xu Wei |
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| Affiliation: | 1. Nanjing University of Information Science & Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, China; 2. Nanjing University of Information Science & Technology, Key Laboratory for Aerosol Cloud Precipitation of China Meteorological Administration, Nanjing 210044, China,1. Nanjing University of Information Science & Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, China; 2. Nanjing University of Information Science & Technology, Key Laboratory for Aerosol Cloud Precipitation of China Meteorological Administration, Nanjing 210044, China,1. Nanjing University of Information Science & Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044, China; 2. Nanjing University of Information Science & Technology, Key Laboratory for Aerosol Cloud Precipitation of China Meteorological Administration, Nanjing 210044, China and Nanjing University of Information Science & Technology, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing 210044,China |
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| Abstract: | Resistive leakage current is an important indicator in metal oxide surge arrester (MOA) on-line monitoring. Traditional capacitive current compensation method ignores the influence of the harmonic voltage,a huge error on the monitoring result is caused. To solve this problem,a harmonic correction and study for MOA on-line monitoring algorithm based on the relationship between the resistive current and capacitive current at voltage's zero-point is proposed. Capacitance of MOA and compensation coefficients of capacitive G are deduced. This method eliminates the influence of the harmonic voltage and improves the extraction accuracy of resistive current. MATLAB simulations show that the error of capacitance C, fundamental resistive current component iR1and the 3rd harmonic resistive current component iR3are 10% by this method,which can reduce the influence of harmonic voltage to the monitoring results effectively, reduce the extraction error of resistive current and improve the accuracy of the arrester on-line monitoring. |
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| Keywords: | metal oxide surge arrester harmonic voltage resistive current on-line monitoring harmonic correction |
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