DocumentCode :
1470195
Title :
Frequency control in isolated island by using parallel operated battery systems applying H∞ control theory based on droop characteristics
Author :
Goya, T. ; Omine, E. ; Kinjyo, Y. ; Senjyu, Tomonobu ; Yona, Atsushi ; Urasaki, N. ; Funabashi, Toshihisa
Author_Institution :
Fac. of Eng., Univ. of the Ryukyus, Okinawa, Japan
Volume :
5
Issue :
2
fYear :
2011
fDate :
3/1/2011 12:00:00 AM
Firstpage :
160
Lastpage :
166
Abstract :
Stand-alone ac power supply system such as isolated islands is subject to large frequency and voltage fluctuations caused by power deviations of wind turbine generator and load demand. The autonomous decentralised frequency control system of parallel operated decentralised generators based on droop characteristic is presented in this study. The conventional droop control methods proposed in past researches show slow and oscillating dynamic responses. Moreover, the conventional droop control is affected by measurement noise when the fast controllability of the system is emphasised. This study proposes the improved droop control system for load sharing of multi-operated decentralised generators by applying H control theory, improving transient response of droop control and robustness against measurement noise and parameter variations. Simulation results validate the effectiveness of the proposed control system.
Keywords :
H control; battery storage plants; controllability; decentralised control; electric generators; frequency control; wind turbines; H control theory; droop characteristics; fast controllability; frequency control; frequency fluctuations; isolated island; isolated islands; load demand; multioperated decentralised generators; parallel operated battery systems; parallel operated decentralised generators; power deviations; stand-alone ac power supply system; voltage fluctuations; wind turbine;
fLanguage :
English
Journal_Title :
Renewable Power Generation, IET
Publisher :
iet
ISSN :
1752-1416
Type :
jour
DOI :
10.1049/iet-rpg.2010.0083
Filename :
5729381
Link To Document :
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