Open AccessSynchronisation of weak microgrid with bulk power system
Author(s) -
Hong YingYi,
Tsai YiTing,
Yeh YuTing,
Chang YungRuei,
Lee YihDer,
Liu PangWei
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0503
Subject(s) - microgrid , voltage , control theory (sociology) , harmonic , power (physics) , electric power system , controller (irrigation) , point (geometry) , three phase , computer science , distributed generation , electronic engineering , engineering , control (management) , electrical engineering , physics , mathematics , agronomy , geometry , quantum mechanics , artificial intelligence , biology
A microgrid including distributed generation sources (DGSs) is generally connected to a bulk power system to provide power to its local loads. The point of common coupling between the bulk power system and microgrid should meet relevant standards. The microgrid becomes a weak system with unbalanced and distorted voltages after it is disconnected from the bulk power system. A synchronisation controller for the DGS considering imbalanced three‐phase voltages and harmonic voltages is presented. The proposed method can be implemented without altering the traditional phase‐locked loop circuit. No filters and compensators are needed in the proposed method. Simulation results reveal that the proposed method is applicable.