基于P/Q控制策略的并网光伏系统短路特性分析

Research on The Short Circuit Characteristics of Grid-connected PV System Base on the P/Q Control Strategies

随着分布式发电技术的快速发展,并网光伏系统应用日益广泛。并网光伏系统短路特性不同于传统同步发电机电网系统,因此,从逆变器拓扑结构出发,依据P/Q控制策略,利用MATLAB/simulink建立仿真模型,得到并网光伏系统在不同故障情况下的电流输出曲线,分析并网光伏系统的短路特性,对于并网光伏系统的研究工作具有实际意义。

With the development of distributed generation,the grid-connected PV system is applied widely.The short circuit characteristics of grid-connected PV system,which have a very mechanism from traditional synchronous generators under grid faults.Accordingly,based om the topological structure of inverter,according to the/control strategy,build the simulation model in MATALAB/simulink environment,get the several current curves in various conditions,analyze the short circuit characteristics of the grid-connected PV system,which has the practical significance to the study of grid-connected PV system.