• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

Electric Power Construction ›› 2019, Vol. 40 ›› Issue (12): 45-54.doi: 10.3969/j.issn.1000-7229.2019.12.006

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Adaptability Expansion Planning of Grid with High Penetration Renewable Energy Applying United Weighted Entropy Theory

 WANG Xi1, GOU Jing1, SU Yunche1, YANG Xinting1, OUYANG Xuetong1, LI Ao1, FAN Jinzhu2, LI Huaqiang2   

  1. 1. State Grid Sichuan Economic Research Institute, Chengdu 610041, China;2. College of Electrical Engineering, Sichuan University, Chengdu 610065, China
  • Online:2019-12-01
  • Supported by:
    This work is supported by State Grid Corporation of China Research Program (No.521996170006) and Science and Technology Program of Sichuan Province(No.2017GZ0343).

Abstract:  In order to meet the trend of large-scale integration of renewable energy to power grid, it is urgent to plan a grid structure with high adaptability to improve the systems capability to accept renewable energy. Applying the united weighted entropy theory, a series of adaptive indexes for power grid planning is proposed to analyze the security of power grid after renewable energy integration. In uncertain operation environment, the indexes consider the security and stability of power flow distribution, the balance and rationality of nodes and branches. By analyzing the actual state and electrical structure of the power grid, the security of the grid with renewable energy is evaluated. Then, a multi-objective programming model of transmission network is established on the basis of the adaptability indexes, and the data envelope analysis model with analytic hierarchy process restraint cone is used to make comprehensive decision on Pareto solution set. Finally, an example of Garver 18-node system is simulated to verify the rationality and effectiveness of the indexes and the planning model.

Key words:  united weighted entropy, safety adaptability, transmission grid planning, high penetration renewable energy

CLC Number: