摘要
针对气体绝缘输电线路的传热特性,构建稳态热路模型求解外壳和导体温度,在稳态热路模型的基础上引入热容,并建立了简化的暂态热路模型,求解外壳和导体的暂态温升特性,通过实验数据和有限元仿真数据与模型的计算结果对比,验证了模型的精确性,为气体绝缘输电线路的温度预测提供了理论依据。
Based on the finite element method and thermoelectric analogy theory,the steady-state equivalent thermal circuit model of Gas-insulated transmission line（GIL）is established to calculate the temperature of its tank and conductor,and the transient model is established as well.The losses of tank and conductor are solved by analyzing the electromagnetic field of GIL using the finite element method.Steady-state equivalent thermal circuit model is framed for solving temperature,based on the heat transfer characteristics of GIL.Introducing thermal capacity,transient thermal characteristics of its tank and conductor are solved by simplified transient thermal circuit model.Compared with experimental data and the finite element simulation data,the accuracy of this thermal model of GIL is verified and a theoretical basis is also provide for temperature prediction of GIL.
出处
《河北电力技术》
2016年第6期16-18,59,共4页
Hebei Electric Power
关键词
气体绝缘输电线路
有限元法
稳态热路模型
暂态热路模型
gas-insulated transmission line（GIL）
the finite element method
steady-state thermal circuit model
transient thermal circuit model
