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

Abstract

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.

Description

technical field [0001] The invention relates to the field of standby automatic switching, in particular to an early warning and control system between a substation and a master station of a 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 substat...

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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