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Demand for flexibility improvement of thermal power units and accommodation of wind power under the situation of high-proportion renewable integration—taking North Hebei as an example

  • Guoliang LuoEmail author
  • Xin Zhang
  • Shanshan Liu
  • Erli Dan
  • Yiwei Guo
Research Article
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Abstract

As much wind power is connected to the power system, the accommodation of the wind power in the power grids becomes a huge challenge to the operation model of China’s power system. Releasing and improving the flexibility of the power system will be necessary and important to enable the accommodation of power generated with renewable energy sources, which is connected to the power grids on a large scale and accounts for a high proportion. The paper, with North Hebei as an example, discusses the relationship between the demand for the flexibility of thermal power units and the accommodation of wind power. This paper further analyzes the demand for peak load regulation in North Hebei at both the present and the future as well as the characteristics of power sources in the power grids of North Hebei and the technical potential of power generation. It also compares the quantity of curtailed power before and after the flexibility-oriented transformation of thermal power units in North Hebei and calculates the minimum technical output of thermal power under different levels of accommodation of wind power. The research shows that the peak load regulating resources in the power grids of North Hebei boast huge potential, but in the long term, to achieve the objective of a 10% curtailment rate of power generated with renewable energy sources, the minimum technical output of condensing units must be lower than the internationally advanced level of 25%. So, it is difficult to fulfill the said objective solely relying on the strengthened transformation of generating units. To reach the level of 5% curtailment rate of power generated with renewable energy sources, the minimum technical output must achieve breakthrough improvement, which requires continuous technological innovation and power flexibility in close coordination.

Keywords

North Hebei Power system flexibility Renewable integration Variable renewable energy sources Wind energy Power system planning and operation 
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Notes

Funding information

This paper is completed with the support from Beijing Social Science Fund Energy Base Project “A Study on Clean Utilization and Development of Energy in Rural Area under Beijing-Tianjin-Hebei Coordinated Development” (17JDYJB011) and Beijing Social Science Fund Project “Study on the Cooperative Development of New Energy and Coal-fired Power Generation in Beijing-Tianjin-Hebei Region under the New Normal Economy and Carbon Constraints” (16YJC062).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Guoliang Luo
    • 1
    • 2
    Email author
  • Xin Zhang
    • 1
  • Shanshan Liu
    • 1
  • Erli Dan
    • 1
  • Yiwei Guo
    • 1
  1. 1.School of Economics and ManagementNorth China Electric Power UniversityBeijingChina
  2. 2.Beijing Key Laboratory of New Energy and Low Carbon DevelopmentNorth China Electric Power UniversityBeijingChina

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