Research on Practical Comprehensive Compensation Algorithm for Three-phase Reactive Power and Unbalanced Phase-to-phase Load

ZENG Ya-bo

doi:10.14044/j.1674-1757.pcrpc.2010.05.005

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Research on Practical Comprehensive Compensation Algorithm for Three-phase Reactive Power and Unbalanced Phase-to-phase Load

更新时间：2024-09-14

- Research on Practical Comprehensive Compensation Algorithm for Three-phase Reactive Power and Unbalanced Phase-to-phase Load
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 31, Issue 5, Pages: 19-22(2010)
- 作者机构：
  
  中南大学交通运输工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2010.05.005
  CLC： TM714.3
- Published：2010，
- 稿件说明：
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[1]曾亚波.三相线间负载的无功和不平衡补偿实用算法[J].电力电容器与无功补偿,2010,31(05):19-22+28.

ZENG YA-BO. Research on Practical Comprehensive Compensation Algorithm for Three-phase Reactive Power and Unbalanced Phase-to-phase Load. [J]. Power capacitor & reactive power compensation, 2010, 31(5): 19-22.
[1]曾亚波.三相线间负载的无功和不平衡补偿实用算法[J].电力电容器与无功补偿,2010,31(05):19-22+28. DOI： 10.14044/j.1674-1757.pcrpc.2010.05.005.

ZENG YA-BO. Research on Practical Comprehensive Compensation Algorithm for Three-phase Reactive Power and Unbalanced Phase-to-phase Load. [J]. Power capacitor & reactive power compensation, 2010, 31(5): 19-22. DOI： 10.14044/j.1674-1757.pcrpc.2010.05.005.

摘要

主要为解决三相系统的线间负载不平衡无功补偿问题

运用对称分量法

推导出基于可测线电流的正序无功和负序不平衡电流的三角形接法无功补偿公式。根据平衡化原理可知该补偿公式在不平衡度较大时需要投感性无功

这给工程应用带来困难。笔者从工程实际应用出发将无功和不平衡电流补偿公式作一定程度的修改

适当放宽不平衡电流的补偿条件

建立了只投电容器的实用投切控制算法。MATLAB仿真和应用都证实了该控制算法的有效性。

Abstract

To solve reactive power compensation problem of unbalanced three-phase system of phase to phase load

formula of reactive power compensation of delta-connection for positive sequence reactive power and negative sequence unbalanced current based on measurable current is deduced by way of symmetrical component method.It is known through the balance principle that this compensation formula could bring QL

which bring difficulty to the project application.From the point of actual engineering application

the formula of reactive power and unbalanced current compensation is modified

the condition of unbalanced current compensation is appropriately broadened

and a practical control algorithm only by switching capacitors.The effectiveness of this control algorithm is verified by both MATLAB simulation and application.

关键词

无功补偿不平衡补偿线间负载对称分量法

Keywords

reactive power compensationunbalanced compensationphase-to-phase loadsymmetrical component method

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