Abstract: An on-site ESS management device includes an editing part for selectively grouping a plurality of grid parts when a plurality of grid parts including at least one of a battery and a power converter connected to the battery are provided, a selection part for selecting a specific group, and a management part for managing the power input and output of each grid part included in the specific group.

Abstract: An on-site ESS management device includes an editing part for selectively grouping a plurality of grid parts when a plurality of grid parts including at least one of a battery and a power converter connected to the battery are provided, a selection part for selecting a specific group, and a management part for managing the power input and output of each grid part included in the specific group.

Abstract: An apparatus for Internet communication comprises an application protocol, a transmission control protocol/Internet protocol (TCP/IP) protocol and a physical protocol. Data of the TCP/IP protocol stack are processed in parallel in hardware. In one embodiment, the hardware processing logic for each of transmission control protocol (TCP), user datagram protocol (UDP), Internet control message protocol (ICMP), Internet group management protocol (IGMP), address resolution protocol (ARP) and reverse address resolution protocol (RARP) includes its own memory controller, a data buffer, a header buffer and control logic. Processing of data in parallel includes storing first unit processing data in a temporary buffer, initializing a checksum buffer to be used in a checksum calculation of the data, and storing the first unit processing data in a first buffer.