Critical Instantaneous Voltage of Commutation Failure Based on Transient DC Current Prediction

WANG Feng; LIU Tianqi; YOU Xinhong; SU Guoqiang; LIU Yang; LIU Hejin

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

Critical Instantaneous Voltage of Commutation Failure Based on Transient DC Current Prediction

更新时间：2025-12-08

- Critical Instantaneous Voltage of Commutation Failure Based on Transient DC Current Prediction
- Vol. 47, Issue 1, Pages: 129-137(2021)
- 作者机构：
  
  1. 国网山东省电力公司电力科学研究院
  2. 四川大学电气信息学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 January 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
WANG Feng, LIU Tianqi, YOU Xinhong, et al. Critical Instantaneous Voltage of Commutation Failure Based on Transient DC Current Prediction[J]. 2021, 47(1): 129-137.
DOI：

WANG Feng, LIU Tianqi, YOU Xinhong, et al. Critical Instantaneous Voltage of Commutation Failure Based on Transient DC Current Prediction[J]. 2021, 47(1): 129-137. DOI：

摘要

目前高压直流输电换相失败临界电压普遍采用稳态或准稳态判据

缺乏计及故障后直流电流响应特性的暂态判据。研究了直流线路平波电抗和对地电容等储能元件充放电效应对于直流电流的影响

建立了拉式空间下直流线路的等值模型

提出了交流系统对称故障下的直流电流暂态预测算法

并采用Stehfest算法进行拉式逆变换

得到故障过程中直流电流的时域表达式

从而推导出了换相失败临界电压瞬时值判据。不同运行参数下的仿真验证了所提直流预测算法及临界电压判据的准确性。

Abstract

This paper aims to propose a method for judging the critical commutation failure voltage in accordance with the transient response characteristics of DC current. Firstly

the effects of DC line reactance and charging capacitance on DC current are studied. Secondly

A direct current transient prediction algorithm after fault of AC system is proposed based on an equivalent model of DC transmission lines under Laplace Space established in this paper. The inverse Laplace transformation method of Stehfest algorithm is used to get the time domain expression of the DC current in the fault process

and the criterion of the instantaneous voltage value of the commutation failure is derived. Simulation results under different operating parameters verify the correctness of the proposed DC prediction algorithm and the accuracy of the proposed criterion.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Energy Area Compensation Method of DC Power for Improving Recovery Characteristic of AC/DC Transmission System

Coordinated Control Method of VDCOLs in MIDC System Based on the Wide-area Measurement System

Impact of DC Disturbances on AC Protective Relaying Dynamic Behavior

Sheath Current in HV Cable Systems and Its On-line Monitoring for Cable Fault Diagnosis

Influence of Transition Resistance on Transient Power Converse in UHV AC/DC Hybrid Power System

Related Author

LEI Xiao

GUO Qiang

ZHANG Shuo

WANG Qiao

SUN Xu

WANG Huawei

ZENG Qi

LI Xingyuan

Related Institution

China Electrical Power Research Institute

State Grid Shijiazhuang Electric Power Supply Company

State Power Economic Research Institute

School of Electrical Engineering, Chengdu Technological University

School of Electrical Engineering,South China University of Technology

AI问答

⁰