Harmonic Impedance Estimation of System Based on Mixed Total Least Squares

QIAN Yeniu; LI Pengfei; YAO Liting; SUN Jian; TAO Shun

doi:10.14044/j.1674-1757.pcrpc.2017.04.020

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Harmonic Impedance Estimation of System Based on Mixed Total Least Squares

更新时间：2024-09-14

- Harmonic Impedance Estimation of System Based on Mixed Total Least Squares
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 38, Issue 4, Pages: 115-120(2017)
- 作者机构：
  
  1. 国网北京市电力公司电力科学研究院
  2. 华北电力大学新能源电力系统国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2017.04.020
  CLC： TM934.7
- Published：2017，
- 稿件说明：
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[1]钱叶牛,李鹏飞,姚黎婷,孙健,陶顺.基于混合整体最小二乘法的系统谐波阻抗估计[J].电力电容器与无功补偿,2017,38(04):115-120.

QIAN YENIU, LI PENGFEI, YAO LITING, et al. Harmonic Impedance Estimation of System Based on Mixed Total Least Squares. [J]. Power capacitor & reactive power compensation, 2017, 38(4): 115-120.
[1]钱叶牛,李鹏飞,姚黎婷,孙健,陶顺.基于混合整体最小二乘法的系统谐波阻抗估计[J].电力电容器与无功补偿,2017,38(04):115-120. DOI： 10.14044/j.1674-1757.pcrpc.2017.04.020.

QIAN YENIU, LI PENGFEI, YAO LITING, et al. Harmonic Impedance Estimation of System Based on Mixed Total Least Squares. [J]. Power capacitor & reactive power compensation, 2017, 38(4): 115-120. DOI： 10.14044/j.1674-1757.pcrpc.2017.04.020.

摘要

系统谐波阻抗的求取是谐波发射水平评估、谐波责任划分以及谐波治理装置设计的重要前提。本文针对最小二乘线性回归的谐波阻抗算法

分析了其误差产生机理及影响因素等不足;进而在整体最小二乘线性回归方法的基础上

综合考虑电压、电流两方面的测量误差

对系数矩阵进行了优化

并提出了一种估算结果更精确的基于混合整体最小二乘的系统谐波阻抗计算方法;最后

基于PSCAD搭建了IEEE14节点仿真模型

并对比了传统方法与本文方法的结果

验证了所提出方法的有效性和准确性。

Abstract

The calculation of system harmonic impedance is an important prerequisite for the evaluation of harmonic emission level

harmonic responsibility classification as well as the design of harmonic control device. In view of the least square linear regression algorithm for harmonic impedance

in this paper

its error generation mechanism and influence factors etc are analyzed and on the basis of the least square linear regression algorithm

the measurement error in both voltage and current are considered comprehensively

the coefficient matrix is optimized and a kind of calculation method of system harmonic impedance based on mixed total least squares with more accurate estimation result is proposed. Finally

the IEEE 14 nodes simulation model based on PSCAD is set up and the efficiency and correctness of the proposed method is verified by way of the result of the traditional method and the method in this paper.

关键词

谐波阻抗背景谐波电压最小二乘线性回归混合整体最小二乘

Keywords

harmonic impedancebackground harmonic voltageleast square linear regressionmixed total least squares

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