Regional reactive voltage coordination control method and device

Abstract

The invention discloses a regional reactive voltage coordination control method and device, a terminal and a storage medium, wherein, the method comprises the following steps: acquiring voltage signals of a plurality of virtual synchronous generators; and allocating reactive power to each virtual synchronous generator according to the voltage signal of each virtual synchronous generator. Based onthe voltage deviation signal [delta]Uk of each VSG connected to the power grid, combined with the voltage deviation of other VSGs in the power network, Coordinated distribution of reactive power Qkreffor each VSG, a large-scale power system based on power electronics, a solution to the reactive power distribution problem of multi-variable, multi-area grid-connected virtual synchronous machines ispresented, thus, the defect that the local control local information sharing is difficult in the past is overcome, considering the system state of the surrounding area, decentralized coordination control is carried out to obtain the operation strategy of each VSG, which realizes the cooperative operation from part to whole, avoids the failure of local power supply due to too high or too low output power, and improves the security and stability of the power system.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a regional reactive voltage coordinated control method, device, terminal and storage medium. Background technique [0002] In the traditional power generation method, fossil energy is widely used as an energy source, and the synchronous generator that drives the rotation generates electricity and then incorporates it into the grid system for users to use. When distributed energy is integrated into a large power grid system or a microgrid, it is usually connected through the inverter interface of power electronics. After a large number of distributed power sources are connected to the distribution network side, due to their huge number and scattered physical and electrical distances, it is bound to have a huge impact on the safe, stable, high-quality and efficient operation of the distribution network side. Compared with the traditional synchronous generator, the response...

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a regional reactive voltage coordinated control method, device, terminal, and storage medium to solve the problem of excessive access to distributed power sources based on power electronic inverter interfaces in the power system in the prior art. , when a certain power supply fails, it will threaten the safe and stable operation of the power system

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