Study on Impulse Voltage Distribution Characteristics of Flexible HVDC Starting Resistor Considering Stray Parameters

ZHOU Jingyu; ZHANG Wenbo; HAN Kun; HONG Bo; HU Qiuling; Huang Yongrui

doi:10.13296/j.1001-1609.hva.2024.06.020

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Study on Impulse Voltage Distribution Characteristics of Flexible HVDC Starting Resistor Considering Stray Parameters

Research & Analysis | 更新时间：2025-04-26

- Study on Impulse Voltage Distribution Characteristics of Flexible HVDC Starting Resistor Considering Stray Parameters
- High Voltage Apparatus Vol. 60, Issue 6, Pages: 156-165(2024)
- 作者机构：
  
  1.中国南方电网有限责任公司超高压输电公司，广州　 510620
  2.许继集团有限公司，河南　许昌　 461000
  3.许继电气股份有限公司，河南　许昌　 461000
- 作者简介：
- 基金信息：
  
  Major Science and Technology Projects in Henan Province(191110210900)
- DOI：10.13296/j.1001-1609.hva.2024.06.020
  CLC：
- Received：08 November 2023，
  
  Revised：04 January 2024，
  
  Published：16 June 2024
- 稿件说明：
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ZHOU Jingyu, ZHANG Wenbo, HAN Kun, et al. Study on Impulse Voltage Distribution Characteristics of Flexible HVDC Starting Resistor Considering Stray Parameters[J]. High voltage apparatus, 2024, 60(6): 156-165.
DOI：

ZHOU Jingyu, ZHANG Wenbo, HAN Kun, et al. Study on Impulse Voltage Distribution Characteristics of Flexible HVDC Starting Resistor Considering Stray Parameters[J]. High voltage apparatus, 2024, 60(6): 156-165. DOI： 10.13296/j.1001-1609.hva.2024.06.020.

摘要

针对柔性直流输电系统中启动电阻异常放电问题。首先，从启动电阻温升、绝缘水平、电流应力及冲击能量几方面进行校核分析；然后，对现场启动电阻进行拆解，定量分析启动电阻放电原因；最后，利用Ansys搭建电阻器杂散电容求解模型，根据分布电容求解结果，基于PSCAD搭建电阻塔的宽频等效模型，仿真分析启动电阻在冲击电压下的电位分布规律，验证启动电阻异常放电机理并提出优化改进措施。研究结果可为今后柔性直流输电系统启动电阻的选型设计提供参考。

Abstract

Aiming at the problem of abnormal discharge of starting resistor in flexible HVDC system

the check and analysis are performed firstly from such aspects as the starting resistor temperature rise

insulation level

current stress and impact energy; Then

the starting resistor is disassembled at site and the cause of discharge of the starting resistor is quantitatively analyzed、Finally

the Ansys is used to set up the solution model of the stray capacitance of the resistor. The potential distribution of the starting resistor under the impulse voltage is analyzed by simulation in accordance with the solution result of the distribution capacitance and on the basis of broadband equivalent model of the resistance tower which is set up through PSCAD so to verify the abnormal discharge mechanism of the resistor and propose the optimization and improvement measures. The research results can provide a reference for the selection and design of the starting resistor of VSC-HVDC system in the future.

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