Regional active frequency coordination control method and device based on virtual synchronous generator

Abstract

The invention discloses a regional active frequency coordination control method and device based on a virtual synchronous generator, a terminal and a computer storage medium. The method comprises thesteps of acquiring the output power command of the virtual inertia of a virtual synchronous generator and the output power command of the virtual primary frequency modulation; and distributing activepower to each virtual synchronous generator according to the output power command of the virtual inertia of each virtual synchronous generator and the output power command of the virtual primary frequency modulation. Under the condition that additional equipment is not added, the virtual synchronous machine principle is utilized, and the primary frequency modulation characteristic of the synchronous machine is simulated. The coordinated operation of multiple VSG is considered, and the active frequency stability of the system is increased. Compared with a traditional controller based on a localmodel design, method and device better consider the influence of the peripheral VSG, so that better coordination work between VSGs is realized, and the stability of a power grid system is improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method, device, terminal and computer storage medium for regional active frequency coordinated control based on a virtual synchronous generator. Background technique [0002] 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. In the process of connecting distributed power sources to the grid or microgrid, the virtual synchronous generator is an indispensable part of the interface, so its status and role in the security and stability of the grid are very important. [0003] Compared with the traditional synchronous generator, the response speed of the distributed power supply based on the power electronic inverter interface is very fa...

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a regional active frequency coordinated control method, device, terminal and computer storage medium based on virtual synchronous generators to solve the problem of increasing the number of regional virtual synchronous generators in the prior art. Unable to achieve decentralized comprehensive control of multiple virtual synchronous generators across regions

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