基于PSCAD/EMTDC的并网光伏电站设计与仿真分析  

Design and Simulation of Grid-Connected Photovoltaic Station Based on PSCAD/EMTDC

作　　者：张立静[1] 张磊[2] 

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,湖北武汉430074 [2]山东大学电气工程学院,山东济南250061

出　　处：《电工电气》2015年第9期4-7,58,共5页Electrotechnics Electric

摘　　要：介绍了并网光伏电站拓扑结构,建立了基于LCL滤波器滤波电容串联电阻的无源阻尼控制模型,并通过设计方案得出相关元件的参数取值。设计的外环电压、内环电流的并网逆变器双闭环控制策略,实现了对交直流参考信号的准确跟踪。通过在PSCAD/EMTDC软件环境下搭建并网仿真模型,分析光伏电站在正常运行状态以及网侧故障情况下的输出特性,结果验证了滤波器参数设计的合理性及逆变器控制策略的有效性。Introduction was made to the topological structure of grid-connected photovoltaic （PV） station. This paper established a passive damping control model of iflter capacitor series resistance based on LCL iflter and the values of related components were decided. The dou-ble closed-loop control strategy was drafted for the inverter, so as to track the reference signals. Both normal operation of PV station and the short-circuit fault occurred in the power grid were simulated and analyzed in PSCAD/EMTDC. The results of simulation show the rationality of the iflter parameters design and the effectiveness of the inverter’s control strategy.

关 键 词：并网光伏电站 LCL滤波器 PSCAD/EMTDC软件 双闭环控制 

分 类 号：TM615[电气工程—电力系统及自动化]