摘要
在三相三线制局部低压配电网中,易出现电流畸变和三相不平衡情况,对设备运行及配电网安全造成不利影响。在采用有源电力滤波器(APF)进行谐波与三相不平衡综合补偿时,因传统i_(p)-i_(q)法无法有效消除二倍频分量,故补偿效果不甚理想。该文基于传统i_(p)-i_(q)方法提出了一种改进i_(p)-i_(q)法,得出了低通滤波器参数与APF补偿电流的定量关系,并据此进行了APF主要参数的设计。仿真与实验结果证明采用改进i_(p)-i_(q)法时,谐波与不平衡补偿的效果与低通滤波器的截止频率无关,保持了良好的稳定性,且提高了系统的响应速度。
In the three-phase three-wire local low-voltage distribution network,current distortion and three-phase imbalance are prone to occur,which adversely affects the operation of equi_(p)ment and the safety of the distribution network.When using an active power filter(APF)for comprehensive compensation of harmonic and three-phase imbalance,the compensation effect is not good because the traditional i_(p)-i_(q) method cannot effectively eliminate the double frequency component.Based on the traditional i_(p)-i_(q) method,this paper proposes an improved i_(p)-i_(q) method,and the quantitative relationshi_(p) between the low-pass filter parameters and the APF compensation current is obtained,and the main parameters of the APF are designed accordingly.The simulation and experimental results show that when the improved i_(p)-i_(q) method is adopted,the effect of harmonic and unbalance compensation is independent of the cutoff frequency of the lowpass filter,which maintains good stability and improves the response speed of the system.
作者
徐岸非
黄晴宇
沈磊
毛雨阳
席自强
方四安
XU Anfei;HUANG Qingyu;SHEN Lei;MAO Yuyang;XI Ziqiang;FANG Sian(Hubei Collaborative Innovation Center for High-Efficiency Utilization of Solar Energy,Hubei University of Technology,Wuhan 430068,Hubei,China;Xiangyang Industrial Institute of Hubei University of Technology,Xiangyang 441100,Hubei,China;Wuhan WOOSTAR Electric Technology Co.,Ltd.,Wuhan 430070,Hubei,China)
出处
《电网与清洁能源》
北大核心
2022年第10期17-27,共11页
Power System and Clean Energy
基金
湖北省技术创新专项重大项目(2019AAA018)
襄阳湖北工业大学产业研究院重点资助项目(XYYJ2022C11)。
