Study on Harmonic Suppression of Distribution Network Based on Adjustable Sampling Processing

SUN Kuo; HE Ping; ZHANG Yuan; LI Guixin; WANG Zhe

doi:10.14044/j.1674-1757.pcrpc.2020.01.031

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Study on Harmonic Suppression of Distribution Network Based on Adjustable Sampling Processing

更新时间：2024-09-14

- Study on Harmonic Suppression of Distribution Network Based on Adjustable Sampling Processing
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 1, Pages: 195-199(2020)
- 作者机构：
  
  1. 国网天津市电力公司发展策划部
  2. 天地电研北京科技有限公司研发中心
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.01.031
  CLC： TM714
- Published：2020，
- 稿件说明：
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[1]孙阔,何平,张媛,李桂鑫,王哲.基于可调采样处理的配电网谐波抑制研究[J].电力电容器与无功补偿,2020,41(01):195-199.

SUN KUO, HE PING, ZHANG YUAN, et al. Study on Harmonic Suppression of Distribution Network Based on Adjustable Sampling Processing. [J]. Power capacitor & reactive power compensation, 2020, 41(1): 195-199.
[1]孙阔,何平,张媛,李桂鑫,王哲.基于可调采样处理的配电网谐波抑制研究[J].电力电容器与无功补偿,2020,41(01):195-199. DOI： 10.14044/j.1674-1757.pcrpc.2020.01.031.

SUN KUO, HE PING, ZHANG YUAN, et al. Study on Harmonic Suppression of Distribution Network Based on Adjustable Sampling Processing. [J]. Power capacitor & reactive power compensation, 2020, 41(1): 195-199. DOI： 10.14044/j.1674-1757.pcrpc.2020.01.031.

摘要

为了实现配电网的高效无功补偿

文中提出了一种使用可调采样信号处理技术的时域方法

用于消除谐波干扰。首先将被污染的信号重新采样到更高且最接近的频率

该频率是谐波基频的整数倍。然后采用下采样将信号划分为多个子集

谐波干扰表现为每个子集的基线偏移

再通过移动每个子集的基线来消除谐波。由于基线纯粹是由谐波产生的

因此偏移基线不会改变任何原始信号与其他噪声成分。测试结果表明

与小波包分解方法相比

使用新的时域方法能够降低样本扩展长度

提高滤波性能稳定性

更好地辅助无功补偿。

Abstract

For achieving highly effective reactive power compensation of distribution network

a kind of time-domain method using adjustable sampling signal processing technology is proposed in this paper for eliminating harmonic interference.The contaminated signal is firstly resampled to a higher and nearest frequency which is an integral multiple of the harmonic fundamental.Then the signal is divided into several subsets by means of lower sampling.Harmonic interference is represented by a baseline deviation for each subset.The harmonics are then eliminated by moving the baseline of each subset.Since the baseline is generated purely by harmonics

shifting of the baseline does not change any of the original signal and other noise components.It is shown by the test result that compared with the wavelet packet decomposition method

the use of new time domain method can reduce the extension length of the sample

improve the filter performance stability and assist reactive power compensation better.

关键词

配电网信号滤波谐波干扰无功补偿可调采样

Keywords

distribution networksignal filteringharmonic interferencereactive power compensationadjustable sampling

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