Open AccessSystem‐level dynamic phasor models of hybrid AC/DC microgrids suitable for real‐time simulation and small signal analysis
Author(s) -
Xu Jin,
Wang Keyou,
Li Guojie,
Ji Weijiang,
Jiang Xiuchen,
Zhang Hua
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2017.1319
Subject(s) - phasor , signal (programming language) , small signal model , computer science , control theory (sociology) , dynamic simulation , control engineering , electric power system , engineering , simulation , electrical engineering , power (physics) , physics , voltage , control (management) , quantum mechanics , artificial intelligence , programming language
This study develops a system‐level dynamic phasor (DP) model of a hybrid AC/DC microgrid. A new definition of DP, based on the multiple frequency shift transformation, is proposed to extend the models of a variety of AC/DC and DC/DC converters. The comprehensive control system is considered in developing the DP model of microgrid. Furthermore, a computational framework for applying this DP model into system‐level simulation and small signal analysis (SSA) is given. The DP‐based simulation is tested under conditions of environmental disturbances and unbalanced supply voltages. The SSA is performed on the developed DP model to evaluate the voltage stability and harmonic modes of the microgrid. Besides, this DP model shows high potential when implemented in the real‐time simulation with larger scale system.