| 基于虚拟仪器的平方检测法电压闪变测量实现 |
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| 引用本文： | 滕召胜,罗志坤,高云鹏,唐求,周毅波.基于虚拟仪器的平方检测法电压闪变测量实现[J].仪器仪表学报,2011,32(8). |
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| 作者姓名： | 滕召胜 罗志坤 高云鹏 唐求 周毅波 |
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| 作者单位： | 1. 湖南大学电气与信息工程学院 长沙 410082
2. 广西电网电力科学研究院 南宁 530023 |
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| 基金项目： | 国家自然科学基金(60872128); 国家创新基金(04C26224300188)资助项目 |
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| 摘 要： | 电压闪变已成为电力系统的重要污染,为实现闪变测量,简化了IEC推荐的平方检测法电压闪变测量过程,提出并建立了一种计算量小的基于Blackman窗插值FFr的平方检测法电压闪变测量算法,通过对离散的电压均方根值进行加窗插值FFT分解,求得电压均方根值的离散频谱数列U∫(j),对U∫(j)进行视感度加权处理,得到电压均方根值数列对应的瞬时闪变量p,进一步统计排序求得短时间闪变值Pst和长时间闪变值P(u).仿真实验验证了算法的可行性和准确性,在此基础上研制了基于虚拟仪器的电压闪变测量仪,给出了仪器构成与主框图程序,检验与运行证明了仪器的准确性.
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| 关 键 词： | 电压闪变 平方检测法 Blackman窗 插值FFT 虚拟仪器 |
Implementation of voltage flicker measurement with square-detection method based on virtual instrument |
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| Teng Zhaosheng,Luo Zhikun,Gao Yunpeng,Tang Qiu,Zhou Yibo.Implementation of voltage flicker measurement with square-detection method based on virtual instrument[J].Chinese Journal of Scientific Instrument,2011,32(8). |
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| Authors: | Teng Zhaosheng Luo Zhikun Gao Yunpeng Tang Qiu Zhou Yibo |
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| Affiliation: | Teng Zhaosheng1,Luo Zhikun1,Gao Yunpeng1,Tang Qiu1,Zhou Yibo2 (1 College of Electrical and Information Engineering,Hunan University,Changsha 410082,China,2 Guangxi Power Grid Electric Power Research Institute,Nanning 530023,China) |
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| Abstract: | Voltage flicker has already become a major pollution in power system.To realize voltage flicker measurement and simplify the measurement process based on square detection method suggested by IEC,a square detection method based voltage flicker measurement algorithm with less computation task is presented,which is based on Blackman window and interpolated FFT.Through interpolated FFT decomposition of discrete voltage mean square root value,the discrete spectrum sequence Uf(j) of the voltage mean square root v... |
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| Keywords: | voltage flicker square detection method Blackman window interpolated FFT virtual instrument |
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