基于汉宁窗的配电网同步相量测量装置算法及应用

doi:10.11930/j.issn.1004-9649.202007191

中国电力 ›› 2022, Vol. 55 ›› Issue (6): 18-24.DOI: 10.11930/j.issn.1004-9649.202007191

基于汉宁窗的配电网同步相量测量装置算法及应用

余高旺¹, 方陈², 樊占峰¹, 蔺立¹, 龚赟¹, 朱云峰¹

1. 许继电气股份有限公司，河南许昌　461000;
2. 国网上海市电力公司电力科学研究院，上海　200437

收稿日期:2020-08-03 修回日期:2022-02-19 出版日期:2022-06-28 发布日期:2022-06-18
作者简介:余高旺（1976—），男，硕士，高级工程师（教授级），从事电力系统自动化、保护与控制研究，E-mail：yugaowang21@126.com;方陈（1983—），男，博士，高级工程师，从事智能电网、分布式新能源和微电网优化运行研究，E-mail：fangc02@gmail.com;樊占峰（1974—），男，博士，高级工程师（教授级），从事电力系统保护与控制研究，E-mail：13937416180@139.com
基金资助:
国家重点研发计划资助项目(2017YFB0902800)

Research and Application of Algorithm for Distribution Network Synchronous Phasor Measurement Unit Based on Hanning Window

YU Gaowang¹, FANG Chen², FAN Zhanfeng¹, LIN Li¹, GONG Yun¹, ZHU Yunfeng¹

1. XJ Electric Co., Ltd., Xuchang 461000, China;
2. State Grid Shanghai Electric Power Research Institute, Shanghai 200437, China

Received:2020-08-03 Revised:2022-02-19 Online:2022-06-28 Published:2022-06-18
Supported by:
This Work is supported by National Key Research and Development Program of China (NO.2017YFB0902800).

摘要/Abstract

摘要： 配电网量测环境复杂、恶劣，输电网的传统同步相量算法难以满足要求。分析了常用窗函数下傅立叶算法的谐波抑制能力，利用3个等间隔的加汉宁窗离散傅立叶变换（FFT）推导出定间隔采样下同步相量测量算法，在理论上消除了非额定频率下的频率泄露影响，能满足高精度的相位测量要求，具有很好的谐波/间谐波抑制能力。针对多个信号同时存在时频谱泄露影响计算精度问题，分析比较了加汉宁窗FFT插值算法相对其他窗函数的优势。理论分析和实际测试表明，采用上述方案后，提升了相量、谐波/间谐波等量值的测量精度。

关键词: 配电网, 同步相量, 汉宁窗, FFT, 谐波

Abstract: The measurement environment of distribution network is complex and poor, and the traditional synchronous phasor algorithm of transmission network is difficult to meet the requirements. The harmonic suppression ability of Fourier algorithm under common window functions is analyzed. The synchronous phasor measurement algorithm with fixed interval sampling is deduced by using three equal interval discrete Fourier transforms with Hanning window, which theoretically eliminates the influence of frequency leakage under non rated frequency, and can meet the requirements of high-precision phase measurement with good harmonic/interharmonic suppression ability. Aiming at the problem that spectrum leakage affects the calculation accuracy when multiple signals exist at the same time, the advantages of FFT interpolation algorithm with Hanning window over other window functions are analyzed and compared. Theoretical analysis and practical tests show that the measurement accuracy of phasor, harmonic / interharmonic and other quantities is improved after adopting the above scheme.

Key words: distribution network, PMU, Hanning window, FFT, harmonic

余高旺, 方陈, 樊占峰, 蔺立, 龚赟, 朱云峰. 基于汉宁窗的配电网同步相量测量装置算法及应用[J]. 中国电力, 2022, 55(6): 18-24.

YU Gaowang, FANG Chen, FAN Zhanfeng, LIN Li, GONG Yun, ZHU Yunfeng. Research and Application of Algorithm for Distribution Network Synchronous Phasor Measurement Unit Based on Hanning Window[J]. Electric Power, 2022, 55(6): 18-24.

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https://www.electricpower.com.cn/CN/Y2022/V55/I6/18

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基于汉宁窗的配电网同步相量测量装置算法及应用

Research and Application of Algorithm for Distribution Network Synchronous Phasor Measurement Unit Based on Hanning Window

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基于汉宁窗的配电网同步相量测量装置算法及应用

Research and Application of Algorithm for Distribution Network Synchronous Phasor Measurement Unit Based on Hanning Window

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