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Multi-time Scale Adequacy Evaluation of the Power System With High Penetration of Renewable Energy Sources Based on Empirical Mode Decomposition
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  • Wenbo Zhang,
  • Haijun Xing,
  • Yiwen Sun,
  • Ruanming Huang,
  • Ziyu Song,
  • Jiayi Luo,
  • Xiaoyan Bian
Wenbo Zhang
Shanghai University of Electric Power
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Haijun Xing
Shanghai University of Electric Power

Corresponding Author:xinghj@shiep.edu.cn

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Yiwen Sun
Shanghai University of Electric Power
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Ruanming Huang
State Grid Shanghai Economic and Technological Research Institute Co., Ltd
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Ziyu Song
Shanghai University of Electric Power
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Jiayi Luo
Shanghai University of Electric Power
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Xiaoyan Bian
Shanghai University of Electric Power
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Abstract

Adequacy is a crucial consideration in the planning and operation dispatching of the power system, especially in the power system with high penetration of renewable energy sources. Considering the multi-time scale characteristics of renewable energy power and the response characteristics of flexible regulation resources, a multi-time scale adequacy evaluation method based on empirical mode decomposition is proposed. In this method, a net load curve is decomposed into multiple component curves at a multi-time scale by the empirical mode decomposition (EMD) algorithm. As a result, the adequacy demand of the system at each time scale is obtained by waveform recognition. Moreover, the available adequacy resources of the system at different time scales are obtained according to the regulation models of flexible regulation resources. By analyzing the adequacy demand and available adequacy resources of the system at the same time scale, the adequacy evaluation indices at each time scale can be calculated and weighted to form the comprehensive indices. At last, taking a practical power system as a case, the adequacy evaluation indices at each time scale with different capacities of renewable energy sources and energy storage systems are compared and analyzed. Simulation results indicate the validity of the method.
20 Apr 2023Submitted to IET Generation, Transmission & Distribution
22 Apr 2023Submission Checks Completed
22 Apr 2023Assigned to Editor
24 Apr 2023Reviewer(s) Assigned
15 May 2023Review(s) Completed, Editorial Evaluation Pending
21 May 2023Editorial Decision: Revise Major
17 Jun 20231st Revision Received
26 Jun 2023Submission Checks Completed
26 Jun 2023Assigned to Editor
29 Jun 2023Reviewer(s) Assigned
17 Jul 2023Review(s) Completed, Editorial Evaluation Pending
01 Aug 2023Editorial Decision: Accept