Operation Strategy of Energy Router Considering Compressed Air Energy Storage

Energy router is a key device in power system. However, in most studies, energy routers generally use batteries as the energy storage devices, which may limit the capacity of the energy router and cause pollution. Compared with batteries, the compressed air energy storage is more environmentally friendly and has bigger capacity, which can improve the consumption of renewable energy effectively in the power system. This paper constructs a multi-port energy router considering compressed air energy storage to study the coordinated control strategy between each port, especially coordinating with batteries to achieve complementary advantages. At first, the model of compressed air energy storage is constructed, and the structure of the multi-port energy router with compressed air energy storage and the corresponding control methods are proposed to realize the flexible power control and better renewable energy consumption in the power system. The simulation results illustrate that the energy router and proposed operation strategy can realize proper coordination between each port especially the two energy storage devices to improve the energy supply reliability, scheduling flexibility, and renewable energy consumption of the power system.