Research on the Technical and Economic Development of Large Megawatt Wind Turbines Based on Medium-Voltage Electrical System

Authors

  • Wei Liu Windey Energy Technology Group Co., Ltd. (China) image/svg+xml
  • Rui Wang Nanjing Pioneer Awareness Information Technology Co. Ltd.
  • Chen Chen State Grid Lujiang County Electric Power Supply Company

DOI:

https://doi.org/10.4108/ew.5801

Keywords:

Medium voltage wind power system, Large megawatt wind power, Economic analysis, line losses

Abstract

INTRODUCTION: With the advent of the "bidding era" and "parity era" in the wind power market, the competition of the whole machine factory is becoming more and more fierce, and the capacity of the single fan is getting larger and larger, which becomes the key to the design of the fan electrical system of the large-capacity unit (5.XMW or more). At present, the low-voltage wind power system (690V,1140V) is the common solution for wind turbines. However, due to the limitation of the cable section of low-voltage electrical system and the increase of the rated current of the generator, the increase of the capacity of a single machine makes more cables from the generator side to the grid, and the cost also increases.

OBJECTIVES: Aiming at the future large megawatt wind power market, the medium voltage Doubly-Fed electrical system solution is proposed  to increase the higher generation and electricity income of wind farms and reduce the manufacturing cost of wind farms.

METHODS: The technology and economy of medium voltage and low voltage electrical system are compared.

RESULTS: With the gradual increase of single capacity, the economy of medium pressure wind power generation system is getting better and better, and the higher the height of the tower, the better the economy. At the same time, the reduction of the rated current of the generator brings about the reduction of line loss and the increase of power generation. The number of cables is greatly reduced, and the construction cost and difficulty of cable laying will be greatly reduced.

CONCLUSION: In response to the technical trend of large-capacity wind turbines in the future, the medium-voltage wind power generation system has a good application prospect, both from the economic and technical point of view.

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References

Cai Rong,Zhang Libo,et al. Technical and Economic Research on 66 kV Offshore Wind Power AC Collection Solution. Journal of Global Energy Interconnection,2019,2(2):155-162.

X. Zhou, Z. Wang, Y. Ma and Z. Gao, "An Overview on Development of Wind Power Generation," 2018 IEEE International Conference on Mechatronics and Automation (ICMA), Changchun, China, 2018, pp. 2042-2046, doi: 10.1109/ICMA.2018.8484401.

Z. Z. Zhu, Z. C. Sha, M. J. Bai et al., "Power transmission scheme of Shandong offshore wind power base", Chinese Engineering Consultants, vol. 181, no. 10, pp. 64-66, 2015.

Yao X J, Liu Y M, Song Y W. The development and trend of wind energy technology in China. Solar Energy, 2016 (10): 19–30.

C. Sun, J. Chen and Z. Tang, "New Energy Wind Power Development Status and Future Trends," 2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO), Beijing, China, 2021, pp. 1-5, doi: 10.1109/AEERO52475.2021.9708186.

J. Xu, D. He and X. Zhao, "Status and prospects of Chinese wind energy", Energy, vol. 35, no. 11, pp. 4439-4444, 2010.

Liu C Y. Economic and policy analysis of wind power development in China. Yuejiang Academic Journal, 2018 (1): 118–130.

X. Han and Y. Tao, "The development situation of my country’s wind power industry in 2018 and the outlook for 2019", China Energy, pp. 43-47, 2019.

Guo Wei and Tang Renhu. The power industry under the 2060 carbon neutral target. Energy, 2020(11): 19-26.

Bikash K S.Wind energy developments and policies in China: a short review.Renewable and Sustainable Energy Reviews,2018,81: 1393-1405.

Valeria D C,Laura M V.Wind, storage, interconnection and the cost of electricity generation[J] .Energy Economics,2018,69: 1-18.

Smith, John. The Development of Wind Power.Renewable Energy Journal, vol. 12, no. 3 (2023): 45-62.

Johnson, Emily. "Advancements in Wind Turbine Technology." Sustainable Energy Review, vol. 25, no. 2 (2022): 87-104.

Chen, Wei. "Government Policies and Wind Power Development." Energy Policy Journal, vol. 18, no. 4 (2021): 123-140.

Wang, Li. "Environmental Impacts of Wind Farms." Journal of Environmental Science, vol. 8, no. 1 (2020): 76-91.

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Published

16-04-2024

How to Cite

1.
Liu W, Wang R, Chen C. Research on the Technical and Economic Development of Large Megawatt Wind Turbines Based on Medium-Voltage Electrical System. EAI Endorsed Trans Energy Web [Internet]. 2024 Apr. 16 [cited 2024 May 20];11. Available from: https://publications.eai.eu/index.php/ew/article/view/5801