Open AccessComparison of fault transient characteristics of inverter-based distributed generators using different control strategies
Author(s) -
Changyan Xiao,
Ying Xiao,
Yunlei Yang,
Jun Zhao,
Yan Xu,
Chengjiang Deng
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1311/1/012008
Subject(s) - transient (computer programming) , fault (geology) , overshoot (microwave communication) , inverter , control theory (sociology) , voltage droop , grid , distributed generation , computer science , low voltage ride through , engineering , control (management) , voltage , control engineering , ac power , electrical engineering , voltage source , renewable energy , mathematics , geometry , artificial intelligence , seismology , geology , operating system
The inverter-based distributed generators (IBDG) using different control strategies have different fault transient characteristics, which are the key issue of fault analysis for the distribution networks with IBDGs. To this end, this study analyzes and compares the fault transient characteristics of IBDGs using PQ control, droop control and virtual synchronous generators (VSG) control by PSCAD/EMTDC simulation, and considering the requirements of low-voltage ride through (LVRT) during grid-connected operation. The simulation results demonstrate that under the asymmetric fault condition of distribution networks, the IBDGs using different control strategies can maintain symmetric output. And when fault occurs in the distribution networks, the IBDGs using different control strategies have different transient response rate and overshoot of the output current.