Title:
ADAPTIVE VARIABLE-PARAMETER FREQUENCY MODULATION METHOD AND DEVICE FOR DOUBLY FED VARIABLE-SPEED PUMPED-STORAGE UNIT
Document Type and Number:
WIPO Patent Application WO/2024/007465
Kind Code:
A1
Abstract:
Disclosed in the present invention are an adaptive variable-parameter frequency modulation method and device for a doubly fed variable-speed pumped-storage unit. By means of the present invention, frequency modulation parameter optimization is performed on a unit under a plurality of typical operation conditions by taking a rotation speed and a power limitation as constraints; a frequency modulation parameter upper limit curve under different operation conditions is generated in advance; a rotation speed, a frequency deviation and a frequency deviation change rate of a doubly fed variable-speed pumped-storage unit are measured in real time during a frequency modulation process; and a corresponding frequency modulation parameter upper limit is acquired from the upper limit curve according to the rotation speed, and a symbol of the corresponding frequency modulation parameter upper limit is adjusted according to the frequency deviation change rate, so as to obtain frequency modulation parameters. Therefore, stable operation of a unit in different states can be ensured, and the frequency modulation capacity of the unit can be utilized to the greatest extent, such that the unit can have a good frequency modulation performance under different operation conditions and in different operation states.
Inventors:
SHI LINJUN (CN)
LAO WENJIE (CN)
WU FENG (CN)
LI YANG (CN)
LIN KEMAN (CN)
LAO WENJIE (CN)
WU FENG (CN)
LI YANG (CN)
LIN KEMAN (CN)
Application Number:
PCT/CN2022/124295
Publication Date:
January 11, 2024
Filing Date:
October 10, 2022
Export Citation:
Assignee:
UNIV HOHAI (CN)
International Classes:
H02J3/24; G06N3/00; H02J3/28; H02J3/48; H02J3/50; H02J15/00; H02P9/04; H02P101/10
Domestic Patent References:
| WO2013005503A1 | 2013-01-10 |
Foreign References:
| CN114844064A | 2022-08-02 | |||
| CN110120677A | 2019-08-13 | |||
| CN111027177A | 2020-04-17 |
Attorney, Agent or Firm:
BEIJING JINXIN CHENGTAI INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: