风电机组和全钒液流电池联合特性建模与分析

Modeling and simulation for combination of wind power system and vanadium redox flow battery

随着可再生能源渗透率的不断增加,电力储能技术已成为电网安全、稳定、高效运行必不可少的技术支撑。根据全钒液流电池的瞬时变化,结合其参数和变化规律,给出全钒液流电池的等效电路,由此建立全钒液流电池的动态数学模型和仿真模型。接入单机3 kW风机,建立风电机组和全钒液流电池的联合系统模型,研究联合系统的功率特性,分析联合系统模型分别在变风速恒负载和变负载恒风速的情况下,负载、风机与全钒液流电池之间的功率特性。仿真测试结果表明,风电机组和全钒液流电池联合系统模型能够模拟整个系统的工作特性。

With the increasing penetration of renewable energy ,energy storage technology turns to be an absolute necessary support for safe, stable and efficient operation of grid.According to the instantaneous change of vanadium redox flow batteries （VRB）, vanadium flow batteries equivalent circuit is given.System model is built which includes 3 kW wind turbines and all vanadium flow batteries.The power characteristic of combined system is researched.The combined system model analyzes power characteristic of the system under variable wind speed constant load and varying load constant wind speed respectively.The simulation tests show that the model can simulate the working characteristic of joint system of wind turbines and vanadium flow batteries.