Maintenance and control system between master substation and slave stations

Abstract

The invention discloses a maintenance and control system between a master substation and slave stations. The maintenance and control system comprises the master substation and a plurality of sub-substations, wherein the master substation is in communication connection with the plurality of sub-substations respectively; the master substation is used for receiving information uploaded from the sub-substations, collecting and processing grid operation information, carrying out unified and coordinated control on a load and a power flow of a power grid according to a given control strategy and sending a control command to the sub-substations to finish the control function on the overall power grid; a sub-substation collection device collects currents, voltages, active powers and reactive powers of equipment in the sub-substations; and a control device is used for controlling all equipment in the sub-substations, carrying out data communication with the master substation through a communication device, transmitting operation information and fault information of the sub-substations and receiving the control command of the master substation to control the equipment in the sub-substations.

Description

technical field [0001] The invention relates to the field of standby automatic switching, in particular to a maintenance and control system between a substation and a master substation. Background technique [0002] With the development of the economy, the demand for power is getting stronger and stronger, the scale of the power grid is constantly expanding, the structure of the power grid is becoming more and more complex, and the requirements for the reliability of power supply are also getting higher and higher. The reason is that when the main power supply of the power grid is disconnected, the original working power can be quickly disconnected, the backup power can be automatically put into work, and the power supply to users can be restored in time to improve the reliability of power supply, reduce the loss of power supply, and ensure the safe and stable operation of the power grid. [0003] At present, the series power supply structure of 110kV substations in domestic...

AI Technical Summary

Problems solved by technology

[0003] At present, the series power supply structure of 110kV substations in domestic backup and automatic switching systems is a common wiring method for power grids. When the equipment on the series power supply line fails, it may cause bus voltage loss or power loss in some plants, resulting in large economic losses.

[0004] However, 110kV sites and lines are limited. Due to the current situation of power grid construction and the operation mode of the power grid, the limited 110kV sites and lines cannot form a strong coverage network for backup and automatic switching devices. Ensure the stability of the voltage and power angle of the power grid in the area, resulting in problems with the safety and stability of the line

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