Abstract: An energy storage system and a control method thereof are provided. The control method includes steps of: (a) providing an energy storage system including N energy storage modules; (b) obtaining a first sequence and a second sequence by sorting the N energy storage units based on the quantity of electricity in descending order and ascending order respectively; (c) determining a required power of the power grid according to a grid frequency; (d) when the required power is positive, controlling first X energy storage units in the first sequence to discharge for collectively providing an electrical energy, having same magnitude with the required power, to the power grid; and (e) when the required power is negative, controlling first Y energy storage units in the second sequence to collectively receive an electrical energy, having same magnitude with the required power, from the power grid for charging.

Abstract: The present invention provides a system and method for transmitting apparatus-related information in real time. The system comprises at least one server in signal communication with at least one external apparatus in a wired or wireless way. While an abnormality of an external apparatus occurs, the external apparatus transmits a set of abnormality information to the server. After an information receiving interface of the server receives the set of abnormality information transmitted by the external apparatus, an information processing module vocally broadcasts the set of abnormality information. An information transmitting module transmits the set of abnormality information to the client device of at least one assigned related person. While an external apparatus suffers abnormality, the system can inform the related persons in real time to repair the external apparatus instantly.