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With the continuous growth in power demand, effective substation planning becomes increasingly crucial. This chapter proposes a 110 kV substation planning algorithm based on 3 T wiring, aiming to optimize the operation mode of 220 kV substations to enhance grid security and reliability. By analyzing last year’s operation mode, this chapter defines the power supply range of the 220 kV substation, gathers relevant load data, and retrieves 110 kV dual-ended power line information. Using busbar ledger data, we evaluate the access status of 110 kV lines and assess the N-1 overload security of primary substation equipment. This chapter presents an intelligent planning algorithm that combines historical data with current system goals to enable dynamic future adjustments. Finally, we provide output results of various main transformer operation modes in a list form for user selection. These findings demonstrate that this planning scheme can improve substation efficiency and enhance grid operational safety.

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Development of Annual Operation Mode Algorithm for 110 kV Substation Planning Based on 3T Connection

  • 会议论文

  • 发表日期：

    2026年

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  • Huan Chen,
  • Jiyun Liang,
  • Yu Zhang,
  • Yude Bao,
  • Liujun Hu,
  • Zheng Tian,
  • Chao Liu

摘要

With the continuous growth in power demand, effective substation planning becomes increasingly crucial. This chapter proposes a 110 kV substation planning algorithm based on 3 T wiring, aiming to optimize the operation mode of 220 kV substations to enhance grid security and reliability. By analyzing last year’s operation mode, this chapter defines the power supply range of the 220 kV substation, gathers relevant load data, and retrieves 110 kV dual-ended power line information. Using busbar ledger data, we evaluate the access status of 110 kV lines and assess the N-1 overload security of primary substation equipment. This chapter presents an intelligent planning algorithm that combines historical data with current system goals to enable dynamic future adjustments. Finally, we provide output results of various main transformer operation modes in a list form for user selection. These findings demonstrate that this planning scheme can improve substation efficiency and enhance grid operational safety.