Admittance matrices of voltage source converters for distributed generators

摘要

To integrate distributed generators (DGs) with the power grid, interfacing power converters such as voltage source converters (VSCs) are required. However, due to the switching natures, these converters generate harmonics, which may have detrimental effects on the system. To find out how these harmonics may interact with the grid, it is essential to find the admittance matrices of the converters. In this paper, a new proposed method will also be introduced, which can significantly increase the simulation efficiency. A Microgrid example will be presented, and the results are compared with those of brute-force time domain simulation such as PSCAD/EMTDC, demonstrating the validity of the proposed method.