US 12,394,990 B2
Method and system for dynamic stability control of power systems with renewable energy
Guoteng Wang, Hangzhou (CN); Wentao Liu, Hangzhou (CN); Ying Huang, Hangzhou (CN); Yan Li, Guangzhou (CN); Baorong Zhou, Guangzhou (CN); Ye Zhang, Guangzhou (CN); Wangqianyun Tang, Guangzhou (CN); and Zheng Xu, Hangzhou (CN)
Assigned to ZHEJIANG UNIVERSITY, Hangzhou (CN); CHINA SOUTHERN POWER GRID CSG ELECTRIC POWER RESEARCH INSTITUTE, Guangzhou (CN); and China Southern Power Grid Co., Ltd., Guangzhou (CN)
Filed by ZHEJIANG UNIVERSITY, Hangzhou (CN); and CHINA SOUTHERN POWER GRID CSG ELECTRIC POWER RESEARCH INSTITUTE, Guangzhou (CN)
Filed on Oct. 23, 2024, as Appl. No. 18/924,248.
Application 18/924,248 is a continuation of application No. PCT/CN2024/109240, filed on Aug. 1, 2024.
Prior Publication US 2025/0047102 A1, Feb. 6, 2025
Int. Cl. H02J 3/38 (2006.01); H02J 3/00 (2006.01)
CPC H02J 3/381 (2013.01) [H02J 3/002 (2020.01); H02J 2203/10 (2020.01); H02J 2300/20 (2020.01)] 12 Claims
OG exemplary drawing
 
1. A method for dynamic stability control of a renewable energy power system, comprising:
(1) creating a non-linear system of a grid-forming inverter corresponding to the renewable energy power system; and constructing an external subsystem corresponding to the grid-forming inverter based on a Lie derivative;
(2) constructing a linear sliding surface corresponding to the external subsystem; and generating a dynamic stability control unit corresponding to the external subsystem based on sliding mode control; and
(3) generating a first instruction data corresponding to the dynamic stability control unit, and according to the first instruction data, controlling dynamic stability of the renewable energy power system in real time; wherein the first instruction data is a voltage instruction value data.