Study on Fault Characteristics of Hybrid Transmission Line with GIL and Overhead Line

Li Haoyuan

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Study on Fault Characteristics of Hybrid Transmission Line with GIL and Overhead Line

更新时间：2026-02-13

- Study on Fault Characteristics of Hybrid Transmission Line with GIL and Overhead Line
- Vol. 44, Issue 3, Pages: 44-49(2021)
- 作者机构：
  
  中国电力工程顾问集团中南电力设计院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM755
- Published：2021
- 稿件说明：
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Li Haoyuan. Study on Fault Characteristics of Hybrid Transmission Line with GIL and Overhead Line[J]. 2021, 44(3): 44-49.
DOI：

Li Haoyuan. Study on Fault Characteristics of Hybrid Transmission Line with GIL and Overhead Line[J]. 2021, 44(3): 44-49. DOI：

摘要

气体绝缘金属封闭输电线路（GIL）具有输电容量大、占地少、维护量小、环境影响小等显著优点，逐渐成为特殊环境下替代架空线路的首选。针对某两回并行500kV架空线路部分改造为GIL的混合输电线路系统，针对GIL和架空线的结构和电气参数，在PSCAD中建立GIL-架空线混合输电线路模型，并在线路不同位置设置短路故障进行仿真计算，研究其故障相电压和电流特性与改造前的差异，结合仿真结果提出线路改造建议

Abstract

Gas-insulated transmission line (GIL) has many advantages

such as large transmission capacity

small occupation of land

small maintenance and small environmental impact

and has gradually become the first choice to replace overhead lines in special environments. Aiming at a hybrid transmission line system with two 500 kV overhead lines partially reformed to GIL

a GIL-overhead line hybrid transmission line model is established in PSCAD based on the structure and electrical parameters of GIL and overhead line

and short-circuit faults are set up at different positions of the line for simulation

so as to study the differences between fault characteristics. And suggestions for line reconstruction are proposed based on the simulation results.

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Related Author

Liu Qizhong

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Related Institution

Sichuan Luzhou Chuannan Power Generation Co．，Ltd．China Ｒesources Power( Yunfu) Co．，Ltd．

Yizhuang Power Supply Company of State Grid Beijing Electric Power Company

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