摘要
对配电网三相不平衡负荷补偿方案进行了研究,总结了三相不平衡的影响和不平衡度的基本定义,分析了在三相不平衡抑制领域的方案进展以及对应的负荷补偿方法。在有源电力滤波器(active power filter,APF)基础上研究负荷补偿,构造三相四线制下对应的数学模型和控制策略。利用MATLAB进行仿真完成理论到实验的转化,借助于Simulink工具设计展示所需的电路图。通过仿真确定所设计方案可以应用到实际运营操作中,更为有效的缓解负荷不平衡情况,同时,对于功率因数的增大也有较为明显的效果,一定程度也可以降低谐波的影响。
In this paper,the 3-phase imbalanced load compensation scheme for distribution networks is studied,and the influence of the 3-phase imbalance and the basic definition of the imbalance are summarized,and the scheme progress and the corresponding load compensation method in the field of the 3- phase imbalance suppression are analyzed. On the basis of the active power filter(APF),the load compensation is studied to construct the corresponding mathematical model and control strategy in the three-phase and four-wire system. The simulation by means of MATLAB is carried out to complete transition from theoretical study to experimental application.,and the Simulink tool is used to design the required circuit for display. The simulation results show that the designed scheme can be applied to the actual operation,and the load imbalance be alleviated more effectively. At the same time,increase of the power factor also has more obvious effects,and can also reduce the impact of harmonics to a certain extent.
作者
丁锐
王官涛
刘海泳
伊瑞鹏
DING Rui;WANG Guantao;LIU Haiyong;YI Ruipeng(Shandong Binzhou Power Supply Company,State Grid Shandong Electric Power Company,Binzhou 256600,Shandong,China)
出处
《电网与清洁能源》
2018年第4期22-28,共7页
Power System and Clean Energy
基金
国家自然科学基金项目(61272241)~~
关键词
电力系统
配电网
三相不平衡
负荷补偿
瞬时无功功率
power system
distribution network
three phase unbalance
load compensation
instantaneous reactive power
