基于功率硬件在环的电网实时模拟技术研究

Research on real-time grid simulation based on power hardware in loop

随着风电机组向大型化的发展,如何在实验室环境下研究风电机组与电网的交互影响受到人们越来越多的关注。针对实验室环境下的大功率电网模拟问题,对H桥级联高压多电平电网模拟器进行了研究。针对真实模拟电网运行特性问题,将功率硬件在环(Power-Hardware-In-Loop,PHIL)技术与电网模拟技术相结合,对功率硬件在环实时仿真系统中的接口算法进行了研究。基于理想变压器模型接口算法建立了完整的系统模型,并在Matlab/Simulink仿真环境中进行了仿真研究。仿真结果验证了所提电网模拟技术的先进性。

With the large scale development tendency of wind turbine, the study of the interaction between wind turbine and power grid in the laboratory has paid more and more attention by the people in recent years. Aiming at the simulation of the big power grid in the laboratory, a type of grid simulator based on H-bridge high voltage multilevel inverter is studied. For the simulation of the grid＇s real characteristics, the power hardware in loop （PHIL） technology is adopted by combining with the grid simulation, and the interface algorithm of the PHIL real-time simulation system is also studied. The complete system model based on ideal transformer model interface algorithm is built, and it is simulated successfully by the circumstance with MatlatySimulink. The simulative results show the advanced natures of the proposed grid simulation technology.