An Improved Over-Speed Deloading Control of Wind Power Systems for Primary Frequency Regulation Considering Turbulence Characteristics

Xiaolian Zhang (), Baocong Lin, Ke Xu, Yangfei Zhang, Sipeng Hao and Qi Hu
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Xiaolian Zhang: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Baocong Lin: School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China
Ke Xu: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Yangfei Zhang: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Sipeng Hao: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Qi Hu: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Energies, 2023, vol. 16, issue 6, 1-18

Abstract: Wind power systems participating in primary frequency regulation have become a novel trend. In order to solve the problem of the over-speed deloading (OSD) control of wind power systems failing to provide reserved capacity for primary frequency regulation while under turbulent winds, this paper analyzes the influence mechanism of turbulence characteristics on the OSD control and the relationship between the reserve capacity of OSD control and the deloading power coefficient under turbulent wind speeds, while also quantifying the relationship between the turbulence characteristic index and deloading power coefficient. The range of the deloading power coefficient is obtained accordingly, based on which improved OSD control is proposed to dynamically optimize the deloading power coefficient according to the turbulence characteristics, which improves the frequency regulation performance of wind power systems under turbulent wind speed. According to the simulations and experimental results, the improved method proposed in this paper has good effectiveness and superiority in frequency regulation effect and rotor speed performance.

Keywords: wind power system; primary frequency regulation; OSD control; turbulence characteristics (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: 2023
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