面向智慧调控的大容量风光储场站等值建模

Equivalent Modeling of Large-capacity Wind/Photovoltaic/Energy Storage Station for Smart Regulation

随着国内新建陆上风光储场站数量的快速增长,如何实现新能源发电的智慧调控成为一个热点问题。为了进一步研究适用于多场景的优化调控控制策略,需要开展大容量风光储场站的等值建模研究。为此,本文基于双馈风机、光伏和电池储能各自的发电原理和场站调控方法,提出了一种大容量风光储场站建模方法。针对单台机组,分别建立了风光储发电单元的等值模型和基于受控源的变流器简化模型。进而,通过建立阻抗参数等值模型和机组扩容等值模型,实现了单机扩容对机群的等值。最后,搭建了大容量风光储场站并网仿真模型,仿真结果验证了所提建模方法的有效性。

With the rapid growth in the number of the recently built domestic onshore wind/solar/energy storage stations,how to realize the optimization and regulation of renewable energy generation has become a hot issue.In order to further study the optimization regulation strategy for multiple scenarios,it is necessary to conduct equivalent modeling research on of the large-capacity wind/photovoltaic/energy storage station.For this reason,a modeling method for the large-capacity wind/photovoltaic/energy storage station is proposed based on the power generation principles of doubly-fed induction generator,photovoltaic and battery energy storage,as well as the station regulation method.For the single unit,equivalent models of wind/photovoltaic/energy storage power generation units and simplified models of converters based on controlled sources are established.Furthermore,the equivalent of single unit capacity expansion to the unit groups is realized by establishing the equivalent models of impedance parameters and unit capacity expansion.Finally,a simulation model for grid-connected wind/photovoltaic/energy storage station with large-capacity is built,and the simulation results verify the effectiveness of the proposed modeling method.