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Analysis of Ultra-low Frequency Oscillation Mechanism of Hydraulic Turbine Governor Under Different Control Modes
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Sheng-ming HE1, Jian ZHANG1, Gui-jin DUAN1, Guang-dong YANG1, Wei-jiang CAI2, Gui-lin LI3
Water Resources and Power | 2023, 41(12) : 195 - 199
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Water Resources and Power | 2023, 41(12): 195-199
• ELECTROMECHANICS AND CONTROL ENGINEERING •
Analysis of Ultra-low Frequency Oscillation Mechanism of Hydraulic Turbine Governor Under Different Control Modes
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Sheng-ming HE1, Jian ZHANG1, Gui-jin DUAN1, Guang-dong YANG1, Wei-jiang CAI2, Gui-lin LI3
Affiliations
  • 1.Yalong River Hydropower Development Company, Ltd., Chengdu 610051, China
  • 2.NARI Group Co., Ltd., Nanjing 211106, China
  • 3.College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
Published: 2023-12-25 doi: 10.20040/j.cnki.1000-7709.2023.20230362
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With the transformation of the southwest power grid with a high proportion of hydropower into an UHV AC-DC network structure, ultra-low frequency oscillations have occurred in the power grid. According to the characteristics of the hydropower unit governor, a small disturbance model of the hydropower unit was established. The impact of various parameters of the hydropower unit governor on the system stability in primary frequency modulation was discussed by using the eigenvalue analysis method, and the power mode and the opening mode were compared. Finally, the impact of the opening mode and the power mode with AGC was studied. The results show that the parameter adjustable range of the opening mode is larger than that of the power mode, but it is more easily affected by AGC. This study lays a foundation for further research on suppression methods of ultra-low frequency oscillations.

Southwest China Power Grid  /  water turbine governor  /  ultra-low frequency oscillation  /  primary frequency modulation  /  AGC
Sheng-ming HE, Jian ZHANG, Gui-jin DUAN, Guang-dong YANG, Wei-jiang CAI, Gui-lin LI. Analysis of Ultra-low Frequency Oscillation Mechanism of Hydraulic Turbine Governor Under Different Control Modes[J]. Water Resources and Power, 2023 , 41 (12) : 195 -199 . DOI: 10.20040/j.cnki.1000-7709.2023.20230362
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Year 2023 volume 41 Issue 12
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20230362
  • Receive Date：2023-03-12
  • Online Date：2026-01-28
  • Published：2023-12-25
Article Data
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History
  • Received：2023-03-12
  • Revised：2023-04-03
Funding
Affiliations
    1.Yalong River Hydropower Development Company, Ltd., Chengdu 610051, China
    2.NARI Group Co., Ltd., Nanjing 211106, China
    3.College of Energy and Electrical Engineering, Hohai University, Nanjing 211100, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20230362
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红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
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光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
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