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The Strategies for Improving Energy Efficiency of Power System with Increasing Share of Wind Power in China

Author

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  • Jun Zhao

    (School of Humanities and Social Sciences, North China Electric Power University, Beijing 102206, China)

  • Bo Shen

    (Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA 94720, USA)

Abstract

Coal-fired power generation will dominate the electricity supply in China in the foreseeable future. Coal fired power units can play a crucial role in integrating intermittent wind energy and improving the overall energy efficiency of the power system. The integration benefits of wind power, along with the gains of high load rates of coal fired units, should be fully taken into account. An optimal model combining wind power and coal fired units is built to analyze the operational flexibility of coal fired units and the integration of wind power. Taking the coal fired units in North China Power Grid as an example, the dispatch costs and benefits are examined under the energy efficiency dispatch mode, in comparison with those under the fair dispatch rules and the installed capacity. The results show that increasing the flexibility of the power system under the energy efficiency dispatch mode may be the best choice for the power system with the high share of coal fired units to integrate more wind power, and that the units delivering flexibility services are financially influenced. The results also indicate that a certain amount of wind power curtailment may be reasonable, and that rational penalty rate and fees for the curtailment of wind power may help to optimize the operation of the power system and integrate more wind power. Based on these results, policy and strategy recommendations are proposed to promote the flexibility of coal fired units and change their operation mode and their dispatch mode in the power system.

Suggested Citation

  • Jun Zhao & Bo Shen, 2019. "The Strategies for Improving Energy Efficiency of Power System with Increasing Share of Wind Power in China," Energies, MDPI, vol. 12(12), pages 1-22, June.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:12:p:2376-:d:241560
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    1. Jun Zhao & Xiaonan Wang & Jinsheng Chu, 2022. "The Strategies for Increasing Grid-Integrated Share of Renewable Energy with Energy Storage and Existing Coal Fired Power Generation in China," Energies, MDPI, vol. 15(13), pages 1-18, June.
    2. Yinhe Bu & Xingping Zhang, 2021. "On the Way to Integrate Increasing Shares of Variable Renewables in China: Experience from Flexibility Modification and Deep Peak Regulation Ancillary Service Market Based on MILP-UC Programming," Sustainability, MDPI, vol. 13(5), pages 1-22, February.

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