A Fast Boundary Protection for an AC Transmission Line Connected to an LCC-HVDC Inverter Station

Zhen Liu; Houlei Gao; Sibei Luo; Le Zhao; Yuyao Feng

doi:10.1186/s41601-020-00175-7

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A Fast Boundary Protection for an AC Transmission Line Connected to an LCC-HVDC Inverter Station

Original Research | 更新时间：2026-09-30

- A Fast Boundary Protection for an AC Transmission Line Connected to an LCC-HVDC Inverter Station
- A fast boundary protection for an ACtransmission line connected to an LCC-HVDC inverter station
- 现代电力系统保护与控制（英文） 2020年5卷第4期页码：1-12
- 作者机构：
  
  1. Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University,Jinan,China
  2. Electric Power Research Institute of State Grid Shanghai Electric Power Company,Shanghai,China
- 作者简介：
- 基金信息：
- DOI：10.1186/s41601-020-00175-7
  中图分类号：
- 纸质出版：2020-10-01
- 稿件说明：
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Zhen Liu, Houlei Gao, Sibei Luo, 等. A Fast Boundary Protection for an AC Transmission Line Connected to an LCC-HVDC Inverter Station[J]. 现代电力系统保护与控制（英文）, 2020,5(4):1-12.

Zhen Liu, Houlei Gao, Sibei Luo, et al. A fast boundary protection for an ACtransmission line connected to an LCC-HVDC inverter station[J]. Protection and Control of Modern Power Systems, 2020, 5(4): 1-12.
Zhen Liu, Houlei Gao, Sibei Luo, 等. A Fast Boundary Protection for an AC Transmission Line Connected to an LCC-HVDC Inverter Station[J]. 现代电力系统保护与控制（英文）, 2020,5(4):1-12. DOI： 10.1186/s41601-020-00175-7.

Zhen Liu, Houlei Gao, Sibei Luo, et al. A fast boundary protection for an ACtransmission line connected to an LCC-HVDC inverter station[J]. Protection and Control of Modern Power Systems, 2020, 5(4): 1-12. DOI： 10.1186/s41601-020-00175-7.

摘要

For AC transmission lines connected to an LCC-HVDC inverter station

commutation failure can lead to the wrong operation of traditional protection. To solve the problem

this paper proposes a fast protection scheme using transient information from one end of the AC line. The boundary frequency characteristics of the AC line connected to LCC-HVDC inverter are analyzed first. This reveals the existence of significant attenuation on both high frequency signals and some specific frequency signals. Based on the boundary characteristics

a novel boundary protection principle utilizing a backward traveling wave is then proposed. A PSCAD/EMTDC simulation model of a ± 800 kV LCC-HVDC and 500 kV AC transmission system is established

and different fault cases are simulated. The simulation results prove that the novel protection principle is immune to commutation failure

fault resistance and fault type.

Abstract

For AC transmission lines connected to an LCC-HVDC inverter station

commutation failure can lead to the wrong operation of traditional protection. To solve the problem

a novel boundary protection principle utilizing a backward traveling wave is then proposed. A PSCAD/EMTDC simulation model of a±800 kV LCC-HVDC and 500 kV AC transmission system is established

and different fault cases are simulated. The simulation results prove that the novel protection principle is immune to commutation failure

fault resistance and fault type.

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