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| Simulation study on microgrid fault characteristics based on converters control strategy |
| DOI：10.7667/PSPC180040 |
| Key Words:microgrid control strategy virtual synchronous generator droop control fault characteristic |
| Author Name | Affiliation | E-mail | | KANG Qing | School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China | | | LUO Yi | School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Guangxi’s Key Laboratory of Manufacturing Systems and Advanced Manufacturing Technology, Guilin 541004, China | | | LU Xinjia | School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China | 745933936@qq.com | | GAO Peng | School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China | |
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| Abstract:There are various Distributed Generators (DG) converters with different control strategies in a practical microgrid, which may lead to different fault characteristics and protection configuration. Therefore, the characteristics of the droop control strategy and the Virtual Synchronous Generator (VSG) control strategy are compared. On this basis, a simplified equivalent microgrid model is analyzed with Matlab/Simulink simulation under different fault conditions. The results show that different control strategies of DG converters will cause different fault characteristics when short-circuits happen in microgrid. The differences appear in many aspects, that is, the short circuit current amplitude variation, transient overvoltage duration, and the stable level after short-circuit. The study provides corresponding references for relay protection configuration of microgrid. This work is supported by Guangxi Science and Technology Project (No. AC16380041). |
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