Virtual synchronous generator control strategy combining with virtual inertia dynamic adjustment

Abstract

The invention belongs to the field of micro-grids and the technical field of motors, and especially relates to virtual synchronous generator control strategy combining with virtual inertia dynamic adjustment. The invention provides an improved virtual synchronous generator control technology. The improved virtual synchronous generator control strategy combined with the virtual inertia dynamic adjustment method overcomes the defects of traditional virtual synchronous generator control, effectively suppresses power oscillation occurring in the transient process of the microgrid, and improves thetransient stability of distributed power generation units in the alternating current microgrid. The virtual synchronous generator control strategy can be applied to the fields of multi-power-supply parallel connection, new energy microgrid and the like; and stable parallel operation between a plurality of distributed power generation units or between the distributed power generation units and various power supplies can be satisfied.

Description

technical field [0001] The invention belongs to the field of micro-grid and motor technology, and specifically relates to a virtual synchronous generator control strategy combined with dynamic adjustment of virtual inertia, a system, computer equipment and a readable storage medium. Background technique [0002] As the penetration of renewable energy distributed generation in my country's power grid continues to grow, how to solve the problem of distributed generation access and consumption has attracted more and more attention from researchers. In order to make full use of new energy distributed power generation and reduce its impact on the large power grid, micro-grid technology is considered to be an effective way, and virtual synchronous generator technology can improve the support of distributed power to micro-grid and large power grid. [0003] The traditional virtual synchronous generator control strategy simulates the dynamic and steady-state characteristics of synch...

AI Technical Summary

Problems solved by technology

[0004] However, in traditional virtual synchronous generator control, the virtual inertia in the rotor motion equation is a constant value

When a disturbance occurs, too large or too small virtual inertia will reduce the dynamic and steady-state characteristics of the microgrid

And when multiple distributed generation units are connected in parallel, the mismatch of virtual inertia will lead to more serious system oscillation

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