Modular energy storage system

The utility model discloses a modular energy storage system. A system adopting a modular container type ESS and a power cabinet control system can have long-duration uninterrupted power supply (UPS) capacity for batteries and electrochemical storage devices. Embodiments include a modular energy storage system including at least three power cabinets and a set of battery-based energy storage systems(BESs) connected to a first power cabinet. In an embodiment, a first power cabinet may be configured to function as a main power and load balancing device, and the first power cabinet includes powerelectronics including a DCAC inverter, a converter, and a frequency regulator. The first power cabinet may provide a multi-phase output voltage to the second power cabinet and the third power cabinet,the second power cabinet and the third power cabinet being both connected to the first power cabinet. 本实用新型公开了模块化能量存储系统，一种采用模块化集装箱式ESS和电力柜控制系统的系统使得能够具有针对电池和电化学存储装置的长持续时间的不间断电力供应(UPS)能力。实施方式包括模块化能量存储系统，该模块化能量存储系统包括至少三个电力柜和连接至第一