US 11,811,409 B2
Load frequency control device and load frequency control method
Yuki Tsujii, Tokyo (JP); and Shota Omi, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Appl. No. 17/298,235
Filed by Hitachi, Ltd., Tokyo (JP)
PCT Filed Jan. 24, 2020, PCT No. PCT/JP2020/002451
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/195078, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-058629 (JP), filed on Mar. 26, 2019.
Prior Publication US 2022/0123739 A1, Apr. 21, 2022
Int. Cl. G05B 15/02 (2006.01); H03K 5/00 (2006.01); H02J 3/00 (2006.01); H02J 3/06 (2006.01)
CPC H03K 5/00006 (2013.01) [G05B 15/02 (2013.01); H02J 3/003 (2020.01); H02J 3/007 (2020.01); H02J 3/0075 (2020.01); H02J 3/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A load frequency control device comprising:
an AR calculating section that calculates an area requirement to be used for load frequency control;
an output distribution ratio determining section that determines a ratio of output distribution according to an economic efficiency for the area requirement calculated by the AR calculating section and a ratio of power distribution according to an output change speed based on a frequency fluctuation of a power system;
a first output distributing section that determines, based on the ratio of output distribution according to the economic efficiency determined by the output distribution ratio determining section, output distribution according to the economic efficiency for a regulated power source;
a second output distribution section that determines output distribution to the regulated power source at a ratio according to the output change speed of the regulated power source in such a manner that an area requirement allocated at the ratio of output distribution according to the output change speed is satisfied; and
an output distribution ratio function database in which an output distribution ratio function indicating a relationship between the frequency fluctuation of the power system and the ratio of output distribution according to the economic efficiency is registered, wherein
the output distribution ratio determining section determines the ratio of output distribution according to the economic efficiency based on a result of referencing the output distribution ratio function database.