基于PCC的大系统与微电网静态建模仿真  

Large scale system and microgird static modeling and simulation based on PCC

作　　者：陈井锐[1,2] 吕林[1,2] 邓启[1,2] 许晓锋 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]智能电网四川省重点实验室,四川成都610065 [3]成都电业局,四川成都610021

出　　处：《电力系统保护与控制》2011年第15期17-22,27,共7页Power System Protection and Control

基　　金：智能电网四川省重点实验室资助

摘　　要：针对微电网电源类型多样性及其在并网模式下运行状态易受大系统影响的特性,建立了基于大系统与微电网公共耦合点PCC端口的系统静态仿真模型。分布式直流电源(燃料电池等)通过逆变器转换为等值交流电源后,同分布式交流电源(风能发电机组)一起通过可调变压器接在微电网母线上,这时微电网可等值为包含燃料电池、光伏电池、储能装置及风能发电机组的戴维南电路并与大系统等值电路建立电气联系。通过Matlab/Simulink仿真验证了大系统等值电路及各种分布式电源等值交流电路的有效性,所建模型为进一步研究微电网提供了良好的仿真平台。Considering the diversity of power source types in the microgrid and the feature that running state under grid-connected mode is easily affected by large-scale systems,this paper establishes system static simulation model based on large system and microgrid point of common coupling.After translating the distributed DC power （fuel cells,etc） to equivalent AC power through inverter,connecting it to the microgrid bus by variable transformer with the distributed AC power （wind generator unit）,the microgrid can be equivalent to Thevenin circuit including fuel cell,photovoltaic cell,energy storage device and wind-driven generator,which will establish electrical contact with equivalent circuit of large-scale system.Simulation by Matlab/simulink shows the effectiveness of large-scale system equivalent circuit and various distributed AC power equivalent circuits,and the model provides a good platform for further research on micro-grid.

关 键 词：微电网 公共耦合点PCC 燃料电池 光伏电池 储能装置 风能发电机组 

分 类 号：TM743[电气工程—电力系统及自动化]