The products of the microgrid terminal layer include CSD-580 mcrogrid central controller, CSD-581 microgrid mode controller, CSD-582 microgrid local controller and CSD-583 distributed power supply interconnection interface device. They can realize the microgrid central control strategy, carry out real-time strategy calculation through distributed or centralized collection of data in the microgrid, and access and forward information of sub-intelligent devices; It can use internal PLC logic to realize the safe, stable and economical operation of the microgrid system through the micro-power controller, load controller or sub-microgrid controller at the unit level. The central controller adopts the separation design of the control network and the surveillance network, and the control network supports the IEC61850/GOOSE communication mechanism to meet the requirements of the speed of microgrid control.