换流变压器内置氧化锌避雷器选择及动作累计能量仿真分析

Converter Transformer inside ZnO Surge Arrester Selection and Accumulation Thermal Characteristic Researchment

本文基于一台换流变压器实际产品介绍了其内置氧化锌避雷器的选型过程,并提出了基于负载动作后避雷器的仿真暂态电压波形及其伏安特性曲线进行累计热量的评估计算,避免氧化锌阀片出现热崩溃的风险。

Based on the actual product of a converter transformer, this paper introduces the selection process of its built-in zinc oxide arrester, and proposes the calculation of accumulated heat based on the simulated transient voltage waveform and its volt-ampere characteristic curve of the arrester after the load action, so as to avoid the risk of thermal collapse of the zinc oxide valve plate.