Quantitative Research on the Coupling Between Short-circuit Current Level and Source-grid-load Structure in High Load Density Regional Power Grid

QIU Qiqi; GUAN Lin; ZHENG Waisheng; ZHOU Baorong; WANG Ke

doi:10.13334/j.0258-8013.pcsee.241699

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Quantitative Research on the Coupling Between Short-circuit Current Level and Source-grid-load Structure in High Load Density Regional Power Grid

更新时间：2026-07-14

- Quantitative Research on the Coupling Between Short-circuit Current Level and Source-grid-load Structure in High Load Density Regional Power Grid
- Vol. 46, Issue 2, Pages: 545-558(2026)
- 作者机构：
  
  1. 华南理工大学电力学院,广东省,广州市,510641
  2. 中国南方电网有限责任公司,广东省,广州市,510663
  3. 南方电网科学研究院,广东省,广州市,510663
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.241699
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
QIU Qiqi, GUAN Lin, ZHENG Waisheng, et al. Quantitative Research on the Coupling Between Short-circuit Current Level and Source-grid-load Structure in High Load Density Regional Power Grid[J]. 2026, 46(2): 545-558.
DOI：

QIU Qiqi, GUAN Lin, ZHENG Waisheng, et al. Quantitative Research on the Coupling Between Short-circuit Current Level and Source-grid-load Structure in High Load Density Regional Power Grid[J]. 2026, 46(2): 545-558. DOI： 10.13334/j.0258-8013.pcsee.241699.

摘要

短路电流超标问题已经成为高负荷密度地区电网的主要运行风险。论文以负荷密度和电源分布为独立变量，采用参数化建模和基于最大流的网络功率流分析方法，建立一套适用于短路电流水平理论评估的网格式电网规划理论模型。提出量化评估负荷密度、本地同步电源占比、区外直流馈入占比等关键要素对短路电路水平影响的系统方法。基于所建立的理论模型，定量分析高负荷密度区域短路电流水平和分布的变化规律，并对比测算减少站间联络、降低本地电源占比、优化电网结构等措施对区域短路电流水平的控制效果。结果对高负荷密度地区电网规划层面的短路电流水平分析和控制具有较好的参考价值。

Abstract

Excessive short-circuit current (SCC) has become a core operation risk in power systems of high load density areas. With the load density and power source distribution as independent variables

this paper proposes a parametric modeling method to generate the theoretical grid structure

where the network power flow analysis is obtained by the maximum flow algorithm. On this basis

a systematic method is established to quantitatively evaluate the impact of key factors on the SCC level

including the load density

the proportion of local synchronous generator

and the proportion of external DC power injection. Based on the theoretical model

variation patterns of the SCC level and distribution in high load density areas is analyzed. Furthermore

a series of planning countermeasures

including reducing the tie lines

reducing local synchronous generators

optimizing the network topology etc.

are evaluated for their effectiveness in reducing SCC. The study provides a good reference for power grid planning in high load density areas considering the SCC level controlling.

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