Transmission System Planning Method Based on Refined Modeling of Substation Grid-connection Scheme

LI Zhiyuan; WANG Jianxue; DENG Jiaojiao; GU Chenjia; YANG Qian; LIU Haicheng

doi:10.13334/j.0258-8013.pcsee.240734

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Transmission System Planning Method Based on Refined Modeling of Substation Grid-connection Scheme

更新时间：2026-10-12

- Transmission System Planning Method Based on Refined Modeling of Substation Grid-connection Scheme
- Vol. 45, Issue 18, Pages: 7017-7029(2025)
- 作者机构：
  
  1. 电工材料电气绝缘全国重点实验室(西安交通大学电气工程学院),陕西省,西安市,710049
  2. 国网山西省电力公司经济技术研究院,山西省,太原市,030021
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.240734
  CLC：
- Published：2025
- 稿件说明：
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LI Zhiyuan, WANG Jianxue, DENG Jiaojiao, et al. Transmission System Planning Method Based on Refined Modeling of Substation Grid-connection Scheme[J]. 2025, 45(18): 7017-7029.
DOI：

LI Zhiyuan, WANG Jianxue, DENG Jiaojiao, et al. Transmission System Planning Method Based on Refined Modeling of Substation Grid-connection Scheme[J]. 2025, 45(18): 7017-7029. DOI： 10.13334/j.0258-8013.pcsee.240734.

摘要

随着新能源并网规模和外送需求的不断提高，输电系统的重载与阻塞问题趋于严峻，对电网建设方案精细化程度提出更高的要求。该文基于对变电站投建工程的精细化建模，提出一种同时考虑变电站和输电网建设的输电系统规划方法，拓展主要关注网架构建的传统规划理论。首先，针对新建变电站的高压侧接入方式与低压侧送出方式进行建模；进而构建输电系统规划-校核双层模型，上层建立面向变电站和输电线路规划工程的系统模型，考虑规划方案比选与建设时序逻辑等相关约束，下层校核同时考虑常规场景与故障场景的运行模拟，保证规划方案能够同时满足常规场景下运行要求与故障场景下安全校核的限制。最后，基于改进的Garver’s 6节点和某实际电网算例验证该文方法的有效性。

Abstract

With the continuous increase of the renewable energy integration scale and the delivery demand

the problem of heavy load and congestion in the transmission system tends to become more severe. This situation demands higher standards for the refinement of power grid construction schemes. Based on the refined modeling of substation construction engineering

this paper proposes a transmission system planning method that considers both substation and transmission network construction. This method expands upon the traditional planning theory

which mainly focuses on grid network construction. First

the method of connection on both the high-voltage and low-voltage sides of the new substation is modeled. Furthermore

a bi-level model of transmission system planning and checking is constructed. The upper level establishes a system model for substation and transmission line planning

considering the constraints of planning comparison and construction timing logic. The lower level considers the operation simulation in typical and fault scenarios simultaneously

ensuring that the planning results can meet the operation requirements in typical scenarios and adhere to the constraints for safe operation in fault scenarios. Finally

the effectiveness of the proposed method is verified based on the modified Garver's 6-bus system and an actual power grid case.

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