Control method, device and equipment of safe operation of power grid and medium

Abstract

The invention discloses a control method, device and equipment of safe operation of a power grid and a medium. The method comprises the steps of obtaining a system admittance matrix of a target powergrid under a bus single-phase short circuit when the bus single-phase short circuit occurs in the target power grid containing a reactance type superconducting current limiter; obtaining a target voltage of each bus of the target power grid under the bus single-phase short circuit according to the system admittance matrix and an injection current of the target power grid; acquiring a target current of each bus to the ground in the target power grid according to the target voltage; determining a short-circuit current of the reactance type superconducting current limiter when the bus single-phase short circuit occurs by using the target current and the injection current; and using the reactance type superconducting current limiter to limit the short-circuit current within a rated breaking current range of a circuit breaker in the target power grid so as to ensure the safe operation of the target power grid. Obviously, through the method, safety and reliability of the target power grid inthe operation process can be ensured.

Description

technical field [0001] The invention relates to the technical field of power grids, in particular to a control method, device, equipment and medium for safe operation of power grids. Background technique [0002] In the process of a short-circuit fault in the power grid, huge thermal effects and dynamic effects will be generated. Among them, the thermal effect will increase the temperature of the surrounding environment sharply. , and cause the electrical equipment in the power grid to explode, so if a short-circuit fault occurs in the power grid, there will be a great potential safety hazard. Since the reactive superconducting current limiter can significantly inhibit the short-circuit current in the power grid, the reactive superconducting current limiter has been widely used in the power grid. Among all the short-circuit faults that occur in the power grid, the single-phase short-circuit fault of the bus can reach more than 80%. However, in the prior art, there has not y...

AI Technical Summary

Problems solved by technology

Among all the short-circuit faults that occur in the power grid, the single-phase short-circuit fault of the bus can reach more than 80%. However, in the prior art, there has not yet been research on the calculation of the single-phase short-circuit current of the bus with a reactive superconducting current limiter. , which greatly limits the safe and stable operation of the power grid

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