Early-warning and control system between main substation and slave station

The invention discloses an early-warning and control system between a main substation and a slave station. The early-warning and control system comprises a main substation and multiple satellite substations; the main substation is in communication connection with the satellite substations, the main substation is used for receiving information uploaded by all the satellite substations, collecting and processing power grid operation information, conducting unified coordination control on a load and load flow of a power grid according to an established control strategy and issuing control commands to the satellite substations to complete a control function of the whole power grid; a satellite substation collecting device collects the magnitude of current, the voltage, the amount of active power and the amount of reactive power of equipment in the satellite substations. The control system is used for controlling all equipment within the range of the satellite substations, being in data communication with the main substation through a communication device, sending operation information and fault information of the satellite substations, receiving the control commands of the main substation and controlling the equipment in the satellite substations.