【摘要】 为研究光伏电池(photovoltaic cell,PV)和燃料电池(fuel cell,FC)对配网侧综合负荷特性的影响,构建了PV和FC发电系统并研究了各功能模块的模型和并网控制策略;通过分析PV和FC的稳态特性和并网控制外特性,提出了PV和FC发电系统恒功率控制的电压源等效描述模型。实例仿真结果表明,恒功率控制的电压源能等效描述PV和FC发电系统的拟负荷外特性。基于此,提出了感应电动机并联静态负荷和直流分布式电源的广义综合负荷模型结构。更多还原

【Abstract】 To research the impacts of photovoltaic cell(PV) and fuel cell(FC) on characteristics of composite load at distribution network side,on the basis of building generation system based on PV and FC,the models of funtional modules and grid-connction strategy are expounded;by means of analyzing steaty state characteristics of PV and FC as well as their external characteristics of grid-connection control,a equivalent description model with constant power control for generation system based on PV and FC is proposed.Results of case simulation show that the voltage source with constant power control can equivalently describe the pseudo-external characteristic of generation system based on PV and FC better,and then a structure of generalized composite load model for induction motors parallelly connected with static load and DC distributed generation is put forward.更多还原