Overload Capability Calculation Methods of HVDC Converter Valve

YANG Guangyuan; LI Xingyuan; HU Yongyin; LI Kuan

doi:10.13296/j.1001-1609.hva.2015.12.006

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Overload Capability Calculation Methods of HVDC Converter Valve

更新时间：2025-04-26

- Overload Capability Calculation Methods of HVDC Converter Valve
- High VoltageApparatus Vol. 51, Issue 12, Pages: 33-37(2015)
- 作者机构：
  
  1. 中国南方电网超高压输电公司检修试验中心
  2. 四川大学电气信息学院
  3. 国网四川省电力公司技能培训中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.12.006
  CLC： TM721.1
- Published：2015
- 稿件说明：
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[1]杨光源,李兴源,胡永银,李宽.高压直流输电换流阀过负荷能力计算方法[J].高压电器,2015,51(12):33-37.

YANG Guangyuan, LI Xingyuan, HU Yongyin, et al. Overload Capability Calculation Methods of HVDC Converter Valve[J]. High voltageapparatus, 2015, 51(12): 33-37.
[1]杨光源,李兴源,胡永银,李宽.高压直流输电换流阀过负荷能力计算方法[J].高压电器,2015,51(12):33-37. DOI： 10.13296/j.1001-1609.hva.2015.12.006.

YANG Guangyuan, LI Xingyuan, HU Yongyin, et al. Overload Capability Calculation Methods of HVDC Converter Valve[J]. High voltageapparatus, 2015, 51(12): 33-37. DOI： 10.13296/j.1001-1609.hva.2015.12.006.

摘要

作为高压直流输电系统的核心设备之一

换流阀的安全与否直接关系到整个系统的可靠性。由于某种原因需直流输电系统过负荷运行时

应保证各设备的安全可靠运行

由换流阀的安全极限所决定的过负荷限值即为换流阀的过负荷能力。文中先讨论了影响换流阀过负荷能力的主要因素

再根据晶闸管结温和阀冷却系统冷却容量两个方面对阀的过负荷能力计算方法进行了研究

并对南方电网所辖的高肇直流输电工程中阀的过负荷能力进行了计算。

Abstract

As one of the most important devices in the HVDC transmission system

the converter valve directly determines the reliability of the whole system. When the HVDC system has to operate in overload condition

the maximum current of the converter valve is defined as its overload capability to ensure the secure and reliable operation of the HVDC system. In this paper

the main factors affecting the overload capability of the converter valve are summarized

and a method for calculating overload capability of converter valve is proposed according to the thyristor junction temperature and the cooling capability of the valve cooling system. Moreover

the overload capability of the converter valve in the Anshun-Zhaoqing HVDC transmission project of the China Southern Power Grid is calculated with the roposed method.

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