Research on Ultra-Low-Frequency Oscillation Suppression Method of High-Head, Large-Capacity Hydropower Units

Sixiang Zhang, Longyuan Li, Weijun Liu, Daijun Luo, Bingjie Zhai, Haomin He, Peng Zou, Yuhong Wang () and Shilin Gao
Additional contact information
Sixiang Zhang: Wuhan University, Wuhan 430072, China
Longyuan Li: Southwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Chengdu 610021, China
Weijun Liu: China Three Gorges Construction Engineering Corporation, Chengdu 610094, China
Daijun Luo: China Three Gorges Construction Engineering Corporation, Chengdu 610094, China
Bingjie Zhai: College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Haomin He: College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Peng Zou: Southwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group, Chengdu 610021, China
Yuhong Wang: College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Shilin Gao: College of Electrical Engineering, Sichuan University, Chengdu 610065, China

Energies, 2024, vol. 17, issue 3, 1-18

Abstract: Aiming at the problem of ultra-low-frequency oscillation (ULFO) caused by an irrational setting of governor parameters of high-head hydraulic turbine units, this paper proposes a method to optimize the additional damping control parameters of the governor to suppress ULFO. Firstly, the mechanism of ULFO is elaborated and the effect of system damping torque on ULFO is analyzed. Secondly, Hamilton’s theory is used to rank the magnitude of each unit’s contribution to the ULFO. Then, the parameters of the damping controller are optimized using the variational modal decomposition–Hilbert transform method and the Grey Wolf Optimization algorithm. It realizes the phase compensation of the hydroelectric unit governor and suppresses the ultra-low-frequency oscillation. Finally, the proposed method is validated using the simulation conducted in CloudPSS. The test results indicate that the proposed method can effectively suppress the ULFO caused by the high-head hydroelectric unit.

Keywords: ultra-low-frequency oscillation; Hamiltonian energy function; variational mode decomposition; Hilbert transform; governor additive damping control; Grey wolf optimizer; high-head (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/3/724/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/3/724/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:3:p:724-:d:1332366

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().