US 12,470,160 B2
Stability control method and system for grid connected system of double-fed wind farm
Jing Ma, Beijing (CN); Yaqi Shen, Beijing (CN); Yitong Xu, Beijing (CN); Yuzhuo Cheng, Beijing (CN); and Qiyue Zhang, Beijing (CN)
Assigned to NORTH CHINA ELECTRIC POWER UNIVERSITY, Beijing (CN)
Filed by NORTH CHINA ELECTRIC POWER UNIVERSITY, Beijing (CN)
Filed on May 11, 2023, as Appl. No. 18/196,050.
Claims priority of application No. 202210532371.9 (CN), filed on May 11, 2022.
Prior Publication US 2023/0370002 A1, Nov. 16, 2023
Int. Cl. H02P 9/10 (2006.01); H02P 9/00 (2006.01)
CPC H02P 9/105 (2013.01) [H02P 9/007 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A stability control method for grid connected system of double-fed wind farm, comprising:
collecting operation state parameters of each of wind turbine generator units in the system;
determining a mutual voltage between the units, an interlocking phase angle between the units, and a sub-synchronous current component of each unit according to the operation state parameters of each unit;
determining an energy coefficient of each unit, and then obtaining a total energy coefficient according to the mutual voltage between the units, the interlocking phase angle between the units and the sub-synchronous current component of each unit;
adjusting the operation state parameters of each unit according to the total energy coefficient.