Analytical method of fault characteristic and non-unit protection for HVDC transmission lines

Xu Chu; Guobing Song; Jun Liang

doi:10.17775/CSEEJPES.2016.00047

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Analytical method of fault characteristic and non-unit protection for HVDC transmission lines

更新时间：2025-12-18

- Analytical method of fault characteristic and non-unit protection for HVDC transmission lines
- Analytical method of fault characteristic and non-unit protection for HVDC transmission lines
- 中国电机工程学会电力与能源系统学报(英文) 2016年2卷第4期页码：37-43
- 作者机构：
  
  1. Xi'an Jiaotong University,,, CN,Shaanxi,Xi'an
  2. Cardiff University, Cardiff, South Glamorgan,GB
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2016.00047
  中图分类号：
- 纸质出版：2016
- 稿件说明：
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Xu Chu, Guobing Song, Jun Liang. Analytical method of fault characteristic and non-unit protection for HVDC transmission lines[J]. 中国电机工程学会电力与能源系统学报(英文), 2016,2(4):37-43.

Xu Chu, Guobing Song, Jun Liang. Analytical method of fault characteristic and non-unit protection for HVDC transmission lines[J]. CSEE Journal of Power and Energy Systems, 2016, 2(4): 37-43.
Xu Chu, Guobing Song, Jun Liang. Analytical method of fault characteristic and non-unit protection for HVDC transmission lines[J]. 中国电机工程学会电力与能源系统学报(英文), 2016,2(4):37-43. DOI： 10.17775/CSEEJPES.2016.00047.

Xu Chu, Guobing Song, Jun Liang. Analytical method of fault characteristic and non-unit protection for HVDC transmission lines[J]. CSEE Journal of Power and Energy Systems, 2016, 2(4): 37-43. DOI： 10.17775/CSEEJPES.2016.00047.

摘要

Abstract

An analytical method of fault characteristic for the HVDC system based on frequency response characteristics of boundary elements is presented here. The computational formulas of transfer function and input impedance are deduced using the distributed parameter model of HVDC transmission line

and the amplitude-to-frequency-characteristics of the transfer function and input impedance are analyzed. Based on the amplitude-to-frequency difference between internal and external faults

a non-unit protection method for VSC-HVDC transmission line is presented. Using the current ratio of high-to-low-frequency

this protection method can distinguish internal from external fault. The presented algorithm only uses local-end current

has high operation speed

and is easy to implement. Simulations on a ±200 kV VSC-HVDC system are conducted to demonstrate the validity and feasibility of the developed protection method.

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