TY - GEN
T1 - A frequency-stabilizing scheme for integrating photovoltaics into a small island grid
AU - Yamashita, K.
AU - Sakamoto, O.
AU - Kitauchi, Y.
AU - Nanahara, T.
AU - Inoue, T.
AU - Arakaki, T.
AU - Fukuda, H.
PY - 2011
Y1 - 2011
N2 - The use of photovoltaics (PV) has increased in some small islands of Okinawa Prefecture, Japan in response to various renewable energy demonstration projects. Since this increased usage could deteriorate the power quality, including frequency, of an isolated grid in a small island, a frequencystabilizing system using lithium-ion capacitors (LiC) has been integrated into the grid. Because a frequency-stabilizing scheme is the heart of the frequency-stabilizing system, a scheme which employs deviation of PV output (P) and system frequency (F) as inputs was developed. The parameters of the P input part were derived for mitigating stepwise changes of system frequency caused by a sudden fluctuation in PV output. The parameters of the F part were set so as to alleviate the high-frequency components of the system frequency deviation caused by load fluctuation. The developed scheme was applied to the stabilizing system using LiC in the island grid and was found to greatly alleviate frequency fluctuation.
AB - The use of photovoltaics (PV) has increased in some small islands of Okinawa Prefecture, Japan in response to various renewable energy demonstration projects. Since this increased usage could deteriorate the power quality, including frequency, of an isolated grid in a small island, a frequencystabilizing system using lithium-ion capacitors (LiC) has been integrated into the grid. Because a frequency-stabilizing scheme is the heart of the frequency-stabilizing system, a scheme which employs deviation of PV output (P) and system frequency (F) as inputs was developed. The parameters of the P input part were derived for mitigating stepwise changes of system frequency caused by a sudden fluctuation in PV output. The parameters of the F part were set so as to alleviate the high-frequency components of the system frequency deviation caused by load fluctuation. The developed scheme was applied to the stabilizing system using LiC in the island grid and was found to greatly alleviate frequency fluctuation.
KW - Energy storage system
KW - Frequency-stabilizing system
KW - Lithium-ion capacitor
KW - Photovoltaics
KW - Power system
UR - http://www.scopus.com/inward/record.url?scp=84860751698&partnerID=8YFLogxK
U2 - 10.1109/ISGTEurope.2011.6162630
DO - 10.1109/ISGTEurope.2011.6162630
M3 - 会議への寄与
AN - SCOPUS:84860751698
SN - 9781457714214
T3 - IEEE PES Innovative Smart Grid Technologies Conference Europe
BT - 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies, ISGT Europe 2011
T2 - 2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies, ISGT Europe 2011
Y2 - 5 December 2011 through 7 December 2011
ER -
