Test Method for Inertia and Damping of Photovoltaic Virtual Synchronous Generator Based on Power Angle Transfer Function

Abstract

Virtual synchronous generator technology is a new generation of renewable energy generation control technology in recent years. By making up the droop characteristics and rotation inertia of the synchronous generator in the traditional power system, the renewable energy generation has the characteristics of the traditional generator. At present, there is no unified testing method for PV virtual synchronous generators with different technical routes, and the technical regulations and test regulations of the related virtual synchronous generators at home and abroad are in blank. In this paper, a test method for rotating inertia and damping of PV virtual synchronous generator based on the function of power frequency transfer function is proposed and verified by a hardware in the loop simulation platform. This method does not need to take into account the two order and above characteristics of the virtual synchronous generator. It is suitable for various types of PV virtual synchronous generator rotation inertia test, and solves the problem of the lack of standardized test method for the damping characteristic of the virtual synchronous generator.