Control Strategy of Double-sequence Synchronous-double Random SVPWM for SVG

CHENG Yong; BI Xunxun

doi:10.14044/j.1674-1757.pcrpc.2019.05.008

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Control Strategy of Double-sequence Synchronous-double Random SVPWM for SVG

更新时间：2024-09-14

- Control Strategy of Double-sequence Synchronous-double Random SVPWM for SVG
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 40, Issue 5, Pages: 43-50(2019)
- 作者机构：
  
  西安科技大学电气与控制工程学院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2019.05.008
  CLC： TM714.3
- Published：2019，
- 稿件说明：
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[1]程勇,毕训训.SVG双序同步-双随机SVPWM控制策略[J].电力电容器与无功补偿,2019,40(05):43-50.

CHENG YONG, BI XUNXUN. Control Strategy of Double-sequence Synchronous-double Random SVPWM for SVG. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 43-50.
[1]程勇,毕训训.SVG双序同步-双随机SVPWM控制策略[J].电力电容器与无功补偿,2019,40(05):43-50. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.008.

CHENG YONG, BI XUNXUN. Control Strategy of Double-sequence Synchronous-double Random SVPWM for SVG. [J]. Power capacitor & reactive power compensation, 2019, 40(5): 43-50. DOI： 10.14044/j.1674-1757.pcrpc.2019.05.008.

摘要

在庞大的电力网络中

用电实况越来越复杂

三相负荷不对称情况也日益加重。为了消除大量的负序电流对电网安全稳定运行造成的影响

提出将双随机SVPWM控制思想与SVG双序同步控制策略相结合

以补偿负载不对称情况下电网无功及负序电流

改善三相不平衡度

提高电网功率因数。由于随机SVPWM算法的优点

将大大削减补偿后电网电流谐波幅值

降低电流波形畸变率

从而进一步提高电网功率因数。最后在Matlab/Simulink中建模仿真

验证此方法的有效性。

Abstract

In the huge power network

the situation of power consumption is more and more complicated and the three-phase load asymmetry is increasingly serious. For eliminating the impact of a large number of nega-tive sequence current on the safe and stable operation of power grid

the idea of random SVPWM control com-bined with static var generato（rSVG）double-sequence synchronous control strategy is proposed to compen-sate grid reactive power and negative sequence current under unbalanced load

improve three-phase unbal-ance and enhance the grid power factor. The besides

it can improve power grid imbalance and the powerfactor

the harmonic amplitude of the grid current will be cut down greatly and the current waveform distor-tion is reduced due to the advantages of the random SVPWM algorithm

thus improving power factor of thegrid further. Finally

simulation is set up in Matlab/Simulink and the effectiveness of the method is verified.

关键词

电力网络静止无功发生器（SVG）负序电流随机SVPWM双序同步控制策略谐波功率因数

Keywords

power networkstatic var generator （SVG）negative-sequence currentrandom SVPWMdouble-sequence synchronous control strategyharmonicpowerfactor

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