Control Strategy for Wind Farms-Energy Storage Participation in Primary Frequency Regulation Considering Wind Turbine Operation State

Linlin Yu, Jiafeng Wu, Yuming Cheng, Gaojun Meng (), Shuyu Chen, Yang Lu and Ke Xu
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Linlin Yu: Economic Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
Jiafeng Wu: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Yuming Cheng: Economic Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
Gaojun Meng: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Shuyu Chen: Economic Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
Yang Lu: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Ke Xu: School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Energies, 2024, vol. 17, issue 14, 1-13

Abstract: With the continuous improvement of wind power penetration in the power system, the volatility and unpredictability of wind power generation have increased the burden of system frequency regulation. With its flexible control mode and fast power adjustment speed, energy storage has obvious advantages in participating in power grid frequency regulation. Therefore, this paper studies the control strategy of wind energy storage combined with primary frequency regulation and proposes a control method of wind energy storage combined with primary frequency regulation based on the operation state of wind turbines. This paper analyzes the reserve power and rotor reserve kinetic energy of wind turbines operating in different wind speed ranges, introduces the fan frequency regulation operation state coefficient to quantify the real-time frequency regulation ability of the unit, regards the fan and energy storage system as independent frequency regulation sources, and designs the control strategy of joint frequency regulation of wind and storage in different wind speed ranges. The energy storage system is employed to participate in frequency control in the low-wind-speed range, thereby addressing the “blind spot” issue of wind turbine unit frequency control alone. In the medium- and high-wind-speed ranges, the real-time complementary output of wind and energy storage power is achieved by assigning weights based on the frequency control operation status coefficient. Finally, the effectiveness of the joint frequency modulation control strategy of wind storage in low-, medium-, and high-wind-speed regions is verified in the simulation model.

Keywords: combined air storage system; primary frequency modulation; wind speed zoning; control strategy (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
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