Study on Fatigue Characteristics of Offshore VSC-HVDC Converter Valve Tower in Operation

GAO Xu; REN Junhui; LOU Yantao; SUN Xiaoping; MA Zhirong; ZHAO Chaowei; ZHENG Quanxu

doi:10.13296/j.1001-1609.hva.2024.12.025

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Study on Fatigue Characteristics of Offshore VSC-HVDC Converter Valve Tower in Operation

Research & Analysis | 更新时间：2025-04-26

- Study on Fatigue Characteristics of Offshore VSC-HVDC Converter Valve Tower in Operation
- High Voltage Apparatus Vol. 60, Issue 12, Pages: 223-231(2024)
- 作者机构：
  
  1.西安西电电力系统有限公司，西安　 710075
  2.清华大学，北京　 100084
  3.西安交通大学，西安　 710049
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2024.12.025
  CLC：
- Received：18 July 2024，
  
  Revised：20 September 2024，
  
  Published：16 December 2024
- 稿件说明：
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GAO Xu, REN Junhui, LOU Yantao, et al. Study on Fatigue Characteristics of Offshore VSC-HVDC Converter Valve Tower in Operation[J]. High voltage apparatus, 2024, 60(12): 223-231.
DOI：

GAO Xu, REN Junhui, LOU Yantao, et al. Study on Fatigue Characteristics of Offshore VSC-HVDC Converter Valve Tower in Operation[J]. High voltage apparatus, 2024, 60(12): 223-231. DOI： 10.13296/j.1001-1609.hva.2024.12.025.

摘要

换流阀是海上柔直的核心设备。为研究支撑式海上换流阀塔运行期间的疲劳特性，依据某工程中的海上柔直换流阀建立有限元模型，通过等效损伤和荷载效应分析，研究了换流阀塔的疲劳特性和在环境荷载作用下的疲劳损伤。结合疲劳分析理论，进行了换流阀塔等效损伤值与荷载效应比分析。结果表明，换流阀各部位在服役年限下有较大安全裕度，换流阀塔疲劳寿命满足25年服役年限要求。

Abstract

Converter valve is the core equipment of offshore VSC-HVDC system. For studying the fatigue characteristics of a supported offshore converter valve tower in operation

a finite element model is set up based on an offshore VSC-HVDC converter valve in a project. The fatigue characteristics and fatigue damage under environmental load are studied through equivalent damage and load effect analysis. According to the fatigue analysis theory

the equivalent damage value and load effect ratio of the converter valve tower are analyzed. The results show that each part of the converter valve tower has a large safety margin under the service life

and the fatigue life of the converter valve tower meets the 25 years service life requirement.

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