›› 2016, Vol. 29 ›› Issue (9): 155-.

• 论文 • 上一篇    下一篇

有功电流分离法在单相谐波检测中应用及仿真

王文华1,王少杰1,张雪珍1,陶耀寰1,许 贺2   

  1.  (1邵阳学院 研究生院,湖南 邵阳 422004;2中电投河南电力有限公司 技术信息中心,河南 郑州 450001)
  • 出版日期:2016-09-15 发布日期:2016-09-26
  • 作者简介:王文华(1990-),男,硕士研究生。研究方向:有源电力滤波器。

Application and Simulation of Active Current Separation Method in Single Phase Harmonic Detection

WANG Wenhua1, WANG Shaojie1, ZHANG Xuezhen1, TAO Yaohuan1, XU He2   

  1. (1. Graduate School, Shaoyang University, Shaoyang 422000, China;
    2. Center of Technical Information, Henan Electric Power Co. Ltd., Zhengzhou 450001, China)
  • Online:2016-09-15 Published:2016-09-26

摘要:

为解决单相电路谐波及无功电流检测时的计算复杂和畸变电流对检测存在影响等问题,将有功电流分离法引入单相谐波检测电路,通过锁相环提供的与基波同相位的单位正余弦信号与单相电路电流相乘,低通滤波器滤去高次谐波分别得到基波有功电流和无功电流及谐波电流。将含有2、4、6、8次谐波的待测电流利用Matlab进行仿真,得到待测电流所含基波及谐波电流,表明此种方法对于检测谐波的可行性,并对于模拟检测电路提供了一条更为简便的新思路。

关键词: 电路谐波, 电流检测, 仿真, 滤波器

Abstract:

The active current separation method is introduced into the single-phase harmonic detection circuit in view of the complex and distorted current in the detection of harmonic and reactive current in single-phase circuit. The fundamental active current and reactive and harmonic current are obtained by multiplying the unit of sine cosine current provided by phase-locked loop and by filtering high harmonics by the low pass filter, respectively. Detective current that contains 2, 4, 6, 8times harmonics is simulated by the Matlab, the fundamental and harmonics are obtained. The proposed method provides a more convenient way to simulate the detection circuit.

Key words: circuit harmonic, current detection, simulation, filter

中图分类号: 

  • TM714.5