高压电器2026，Vol.62Issue(5)：33-41,9.DOI:10.13296/j.1001-1609.hva.2026.05.004
等效热路模型在高电压真空断路器额定通流温升仿真中的应用
Application of Equivalent Thermal Circuit Model in Rated Current Temperature Rise Simulation of High Voltage Vacuum Circuit Breaker
摘要
Abstract
Temperature rise of rated current,as an important parameter for assessing the status of vacuum circuit breaker,currently relies primarily on electromagnetic coupling simulation.However,this method requires consider-able time for modeling contact models with different structures and dimensions.In this paper a temperature rise esti-mation model for the rated current of vacuum interrupter based on a thermal circuit method is proposed.The ther-mal circuit model,compared with the traditional electromagnetic coupling simulation model,can quickly reflect the temperature rise of high-voltage vacuum circuit breaker,which is conducive to the design of current-carrying struc-tures for high-voltage vacuum circuit breaker.A thermal circuit model consisting of heat flow and thermal resistance is constructed for the current-carrying structure of the vacuum interrupter.The thermal circuit models for 2/3 turn coil contacts are set up,and the components in the thermal circuit are parameterized based on the physical parame-ters of the contact structure.The temperature rise values of the key nodes of the vacuum interrupter contact are ob-tained by simulation.Both accuracy and efficiency of the thermal circuit model are verified by comparison with the electromagnetic coupling simulation results of the vacuum interrupter.关键词
热路模型/温升/热阻/真空灭弧室/触头Key words
thermal circuit model/temperature rise/thermal resistance/vacuum interrupter/contacts引用本文复制引用
许学勤,徐肖庆,王帅兵,田新强,张彦鹏,丁健刚..等效热路模型在高电压真空断路器额定通流温升仿真中的应用[J].高压电器,2026,62(5):33-41,9.基金项目
国家自然科学基金资助项目(U24B2098) （U24B2098）
南方电网公司科技项目(YNKJXM20222384).Project Supported by National Natural Science Foundation of China(U24B2098),Science and Technology Project of China Southern Power Grid Co.,Ltd.(YNKJXM20222384). （YNKJXM20222384）
