Detection for Three-phase Four-wire DSTATCOM Without Phase-locked Loop Current Under Unbalanced Load

HUANG Wendong; WANG Hui; YANG Daliang; CHEN Jiahao

doi:10.14044/j.1674-1757.pcrpc.2019.05.010

您当前的位置：

首页 >

文章列表页 >

Detection for Three-phase Four-wire DSTATCOM Without Phase-locked Loop Current Under Unbalanced Load

更新时间：2024-09-14

- Detection for Three-phase Four-wire DSTATCOM Without Phase-locked Loop Current Under Unbalanced Load
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 40, Issue 5, Pages: 56-60(2019)
- 作者机构：
  
  广西大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2019.05.010
  CLC： TM761.12;TM933.1
- Published：2019，
- 稿件说明：
移动端阅览
[1]黄文东,王慧,杨达亮,陈家豪.不平衡负载下三相四线制DSTATCOM无锁相环电流检测[J].电力电容器与无功补偿,2019,40(05):56-60.

HUANG WENDONG, WANG HUI, YANG DALIANG, et al. Detection for Three-phase Four-wire DSTATCOM Without Phase-locked Loop Current Under Unbalanced Load. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 56-60.
[1]黄文东,王慧,杨达亮,陈家豪.不平衡负载下三相四线制DSTATCOM无锁相环电流检测[J].电力电容器与无功补偿,2019,40(05):56-60. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.010.

HUANG WENDONG, WANG HUI, YANG DALIANG, et al. Detection for Three-phase Four-wire DSTATCOM Without Phase-locked Loop Current Under Unbalanced Load. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 56-60. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.010.

摘要

传统DSTATCOM电流检测采用的是dq变换法

在检测三相四线制负载电流的不平衡和无功分量会存在一些缺陷。本文提出了一种无锁相环及坐标变换电流检测方法。在αβ静止坐标系下

依据通用矢量定义及归一化方法

计算出有功电压和无功电压单位分量。将负载电流进行正负序分解和相位纠正来获取基波正序有功电流分量

从而获得所需补偿的不平衡和无功分量总和。该算法无需锁相环和坐标变换

算法简单

易于实现。通过控制DSTATCOM输出所需的补偿电流

实现对三相电网电流的补偿。仿真和实验结果表明了该方法具有可行性和有效性。

Abstract

The dq transformation method is used in traditional DSTATCOM current detection

which has some defect in detecting the unbalanced and reactive power component of the three-phase four-wire load current.In this paper

a kind of current detection method without phase-lock loop and coordinate transformation is proposed.In the ap static coordinate

the active and reactive voltage unit vector is calculated in accordance with general vector definition and vector unitization.The load current is subject to positive and negative sequence separation and phase correction of load current are carried out to obtain the positive sequence active current component of base wave

thereby obtaining the sum of the unbalanced and reactive components of the required compensation.This algorithm does not require phase-locked loops and coordinate transformation

and the algorithm is simple and easy to implement.It can realize the compensation of three phase network current by controlling the DSTATCOM output required compensation current.Simulation and experiment results verify the feasibility and effectiveness of the proposed strategy.

关键词

配电网静止同步补偿器不平衡补偿无功补偿补偿电流电容分裂式

Keywords

DSTATCOMunbalanced compensationreactive compensationcompensation currentsplitcapacitor-type

references

Views

116

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Transient Over-voltage Suppression Method of New Energy Based on Controllable Transformer

Brief Discussion on the Development and Design of Interlligent Low-voltage Switch for Reative Compensation

Research on Improving the Performance of On-load Voltage Regulation by Mechanical Reactive Compensation in Distribution System

The Harmonic Administer and Reactive Power Compensation for Low-Voltage Frequency Converter

Selection of Reactive Compensation and Transformer Capacity

Related Author

KE Xianbo

CHENG Lin

XIA Chuanlin

ZHAO Rongzhen

WEI Lin

REN Chong

LIN De-yan

ZHOU Jian-min

Related Institution

NARI Electric Co., Ltd.

Northwest Branch of State Grid Corporation of China

江汉大学物理与信息工程学院湖北武汉430056

Institute of Physics and Information Engineering of Jianghan University

西安交通大学西安710049

⁰