随州广水示范工程高压大容量能量路由器不同运行方式下控制策略研究

Research on Control Strategy of High Voltage and Large Capacity Energy Router Under Different Operation Modes in Suizhou of Guangshui

随州广水100%新能源新型电力系统科技示范工程是探索高比例电力电子设备接入电网后的重要科技试验基地。为避免因新能源大出力时全额消纳和小出力时供电不足而配置大量储能导致的经济性不足的问题,建设七端口能量路由器与主网互联,减少储能投资提高工程经济性。由于能量路由器的接入,示范工程存在多种运行方式,能量路由器在不同运行方式下一种控制策略难以适应,需要针对性地给出控制策略。基于此,本研究针对不同运行方式下能量路由器各侧变流器及直流变压器的控制策略及逻辑进行了分析说明,并通过RTDS平台进行了仿真验证。

100%new energy and new power system technology demonstration project in Guangshui of Suizhou is an important science and technology test base to explore the high proportion of power electronic equipment having been connected to the grid.In order to avoid the problem of insufficient economy caused by the allocation of a large amount of energy storage due to the full absorption of new energy in time of large output and insufficient power supply in time of small output,seven-port energy routers are constructed to connect with the main network,thus reducing energy storage investment and improve engineering economy.Due to the access of the energy router,there are multiple operation modes in the demonstration project,and the control strategy of the energy router under different operation modes is difficult to adapt,so it is necessary to give a targeted control strategy.Based on this,the present paper analyzes and explains the control strategy and logic of converters and DC transformers on each side of the energy router under different operation modes,and also carries out simulation verification through RTDS platform.