焊管2025，Vol.48Issue(9)：48-54,7.DOI:10.19291/j.cnki.1001-3938.2025.09.008
井下大功率电加热器电感电容参数建模修正与数值模拟
Model Correction and Numerical Simulation for Inductance and Capacitance Parameters of Downhole High-power Electric Heaters
摘要
Abstract
For power frequency operating conditions of downhole high-power electric heaters,a simulation model for MI heating cables is established by integrating transmission line and multi-field coupling theory,utilizing multi-variable coupling analysis and COMSOL simulation methosd.Effects of temperature characteristics of magnesium oxide insulating materials,cable structural parameters,and grounding methods on equipment performance were analyzed.Temperature-driven correction model for capacitance parameters and a ground-coupled correction model for inductance parameters were developed,revealing variation pattern of dielectric constant with increasing temperature and influence of conductor spacing on capacitance.With aid of COMSOL simulation software,accuracy of aforementioned correction models under typical operating conditions was validated,thereby providing references for optimizingthe design of downhole high-power electric heaters.关键词
井下大功率电加热器/MgO绝缘材料/电容/电感/温度特性/数值模拟Key words
downhole high-power electric heaters/magnesium oxide insulating materials/electric capacity/inductance/temperature characteristics/numerical simulation分类
能源科技引用本文复制引用
朱锋,周超,王磊,张盟军,吴涛,付永岗,刘朋伟..井下大功率电加热器电感电容参数建模修正与数值模拟[J].焊管,2025,48(9):48-54,7.基金项目
中国石油集团公司关键核心技术攻关项目"井下大功率电加热器研制"(项目编号2024ZG23). （项目编号2024ZG23）
