虚拟同步发电机在一体化光伏建筑中的应用

Application of Virtual Synchronous Generator in Integrated Photovoltaic Building

阐述光伏建筑一体化技术(Building Integrated Photovoltaic,BIPV)能够将传统建筑与太阳能结合起来,充分利用建筑外表面受到的光照并将其转化为电能,实现低碳环保。然而光伏发电存在着间歇性、随机性的特点,且光伏系统使用的电力电子逆变器缺乏惯性和阻尼,响应速度快,这会对电网的稳定性造成影响。虚拟同步发电机技术(Virtual Synchronous Generator,VSG)能使并网逆变器具备同步发电机(SG)的工作特性,使之具有与其相似的转子惯性和阻尼,从而提高光伏系统的并网稳定性。

This paper expounds that Building Integrated Photovoltaic(BIPV) can combine traditional buildings with solar energy, make full use of the light on the exterior surface of buildings and convert it into electric energy to achieve low-carbon environmental protection. However, photovoltaic power generation has the characteristics of intermittence and randomness, and the power electronic inverter used in the photovoltaic system lacks inertia and damping, and the response speed is fast, which will affect the stability of the grid. Virtual Synchronous Generator(VSG) technology can make the gridconnected inverter have the working characteristics of synchronous generator(SG), and make it have similar rotor inertia and damping, thus improving the grid-connected stability of photovoltaic system.