Title:
自然エネルギー発電システム、無効電力コントローラまたは自然エネルギー発電システムの制御方法
Document Type and Number:
Japanese Patent JP7304385
Kind Code:
B2
Abstract:
The purpose of the invention is to provide a natural energy power generation system, a reactive power controller, and a natural energy power generation system control method for suppressing voltage fluctuation at an interconnection point due to reactive power loss of an interconnection transformer. The natural energy power generation system is provided with: a power generation device 12 receiving a natural energy to generate power; a power converter 13 electrically connected to the power generation device 12 and a power system 4; an interconnection transformer 2 disposed between the power converter 13 and the power system 4; and a reactive power controller 16 generating a reactive power command to be output by the power converter 13. Using at least the reactance of the interconnection transformer 2 disposed between the power converter 13 and the power system 4 or the current or the active power output by the power converter 13, the reactive power controller 16 determines the reactive power command so that a sum of the fluctuation component of the voltage at the interconnection point between the power converter 13 and the power system 4 due to the active power and the fluctuation component of the voltage at the interconnection point due to the reactive power becomes substantially constant.
Inventors:
Masachika Nakatani
Shinichi Kondo
Tomomichi Ito
Mitsuru Saeki
Kiyoshi Sakamoto
Shinichi Kondo
Tomomichi Ito
Mitsuru Saeki
Kiyoshi Sakamoto
Application Number:
JP2021123861A
Publication Date:
July 06, 2023
Filing Date:
July 29, 2021
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H02J3/16; G05F1/70; H02J3/38
Domestic Patent References:
| JP2012200111A | ||||
| JP2012060800A | ||||
| JP2013074668A |
Foreign References:
| WO2012063800A1 |
Attorney, Agent or Firm:
Polaire Patent Attorneys Corporation