基于PIMC-STATCOM的低压配电网电能质量治理  

Power quality control of low-voltage distribution network based on PIMC-STATCOM

作　　者：倪少军 于铄航 华程 程卫健 NI Shaojun;YU Shuohang;HUA Cheng;CHENG Weijian(National Energy Ningxia Coal Industry Group Co.,Ltd.,Yinchuan 750011,China;CCTEG Changzhou Research Institute,Changzhou 213015,China;Tiandi(Changzhou)Automation Co.,Ltd.,Changzhou 213015,China)

机构地区：[1]国家能源集团宁夏煤业有限责任公司,宁夏银川750011 [2]中煤科工集团常州研究院有限公司,江苏常州213015 [3]天地(常州)自动化股份有限公司,江苏常州213015

出　　处：《供用电》2023年第11期76-83,共8页Distribution & Utilization

基　　金：天地(常州)自动化股份有限公司研发项目(2023FY0003,2023FY0006)。

摘　　要：针对煤矿电网中存在的功率因数低和电流谐波含量高的问题,提出一种基于综合补偿控制的静止同步补偿器(static synchronous compensator,STATCOM),其在满足无功补偿要求的同时,能在一定程度上降低电流谐波。此外,针对传统两电平STATCOM不适用于低压大功率场合,提出采用并联交错多电平变换器(parallel interleaved multilevel converter,PIMC)拓扑结构的STATCOM,该方案能在低压条件下输出大电流,且相比于将多台STATCOM直接并联,其控制更方便、输出特性更好。通过仿真与实验,验证了该方案的有效性和合理性。Aiming at the problems of low power factor and high current harmonic content in coal mine power grid,this paper proposes a static synchronous compensator(STATCOM)based on comprehensive compensation control,which can not only meet the requirements of reactive power compensation,but also reduce the current harmonics to some extent.In addition,considering that the traditional two-level STATCOM is not suitable for low-voltage and high-power applications,the STATCOM proposed in this paper adopts a parallel interleaved multilevel converter(PIMC)topology.This scheme can not only output large current under low-voltage conditions,but also has better output characteristics than the direct parallel control of multiple STATCOM.Finally,simulation and experiment are carried out to verify the effectiveness and rationality of the scheme.

关 键 词：电流谐波 综合补偿控制 静止同步补偿器 无功补偿 交错并联多电平变换器 

分 类 号：TM71[电气工程—电力系统及自动化]