Optimization method and device for STATCOM transient voltage control instruction, equipment and storage medium

Abstract

The invention discloses an optimization method for STATCOM transient voltage control instruction, which comprises the steps of obtaining filtered electrical quantity data when it is detected that an STATCOM coordination controller operates in a constant reactive power control mode; storing the filtered electrical quantity data in a first register and a second register, and updating the filtered electrical quantity data and corresponding updating moments at preset time intervals; when it is detected that the STATCOM coordination controller is switched from the constant reactive power control mode to the transient voltage control mode, stopping updating, and extracting filtered electrical quantity data in the target register according to the switching moment and the updating moment currentlystored in the first register and the second register; and according to the filtered electrical quantity data in the target register, calculating a voltage instruction value of STATCOM transient voltage control, controlling the STATCOM coordination controller to operate in a transient voltage control mode, and improving the stability of power grid operation. The invention further discloses a device and equipment for optimizing the STATCOM transient voltage control instruction and a storage medium.

Description

technical field [0001] The invention relates to the technical field of high-voltage direct current transmission, in particular to an optimization method, device, equipment and storage medium of STATCOM transient voltage control commands. Background technique [0002] HVDC transmission has the advantages of energy saving and low line cost, and plays an important role in long-distance and high-power transmission, and has been widely used in power grids in various countries. In order to improve the voltage stability problem that may exist when the DC converter station is connected to a weak power grid, some DC converter stations have been equipped with a certain capacity of STATCOM (Static Synchronous Compensator). In the normal operation mode, the STATCOM of the DC converter station generally adopts the constant reactive power control mode, that is, the total reactive power output by the STATCOM remains unchanged. And when the system short-circuit fault or other disturbance m...

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Problems solved by technology

However, this patent does not consider the situation that STATCOM adopts the constant reactive power control mode under normal conditions and switches to the transient voltage control mode under fault conditions, and the algorithm needs to continuously store the AC bus voltage value, and will continuously calculate and update the voltage command value, It takes a lot of storage space and computing resources

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