光伏并网系统低电压穿越模糊自整定控制策略研究  

Study on Fuzzy Self-tuning Control Strategy for LVRT Control of PV-grid System

作　　者：汪方斌 孙向东[2] 张建权 杨俊 陈长才[2] WANG Fangbin;SUN Xiangdong;ZHANG Jianquan;YANG Jun;CHEN Changcai(School of Mechanical and Electrical Engineering,Anhui Jianzhu University,Hefei 230601,China;Anhui Power Engineering Quality Supervision Center Station,Hefei 230001,China)

机构地区：[1]安徽建筑大学机械与电气工程学院,安徽合肥230601 [2]安徽电力工程质量监督中心站,安徽合肥230001

出　　处：《电工技术》2022年第24期41-44,47,共5页Electric Engineering

基　　金：安徽省自然科学基金能源互联网项目(编号2008085UD09);安徽省电力工程质量监督中心站项目(编号HYB20200188)。

摘　　要：传统的低电压穿越双闭环控制策略速度缓慢并且可能不稳定。将模糊控制与传统比例积分(PI)控制相结合,根据采样偏差,通过模糊控制器对PI调节器参数进行实时修改,提出一种光伏并网系统低电压穿越模糊自整定控制策略,增强光伏并网系统的低电压穿越能力。仿真结果表明,该控制策略在有效补偿无功功率的同时,可以改善电压轮廓和提升速度,具有较好的控制效果。The traditional low-voltage crossing double closed loop control strategy is slow and may be unstable.Combined with fuzzy control with traditional proportional integral(PI)control,according to the sampling deviation,the PI regulator parameters are modified in real time by fuzzy controller,and a fuzzy self-tuning control strategy for low-voltage ride through of photovoltaic grid connected system is proposed to enhance the low-voltage ride through capability of photovoltaic grid connected system.The simulation results show that the control strategy can improve the voltage profile and lifting speed while effectively compensating reactive power,and has a good control effect.

关 键 词：光伏发电 并网 低电压穿越 模糊控制 

分 类 号：TM615[电气工程—电力系统及自动化]