隔爆型高压电缆连接器的热电耦合分析

Thermoelectric Coupling Analysis of Flame-proof High Voltage Cable Connector

针对隔爆型高压电缆连接器在井下输电线路使用过程中事故多发的原因,以LBG1-200/6高压电缆连接器为研究对象,从电、绝缘、热3方面分析了连接器的结构及材料属性;运用ANSYS有限元方法,建立了高压电缆连接器的电磁-热场耦合模型,分析了运行在恶劣环境下高压电缆连接器的温度分布云图。算例定量分析了绝缘老化引起的额外温升及载流量变化,研究结果为矿用电缆连接器的安全使用提供了依据。

Flame-proof high voltage cable connectors are widely used in the mine transmission lines. The high voltage cable connector LBG1-200 /6 is employed to analyze the accident causes of the cable connector. The electrical,insulation and thermal structure and properties of the connector are firstly introduced. Then the electromagnetic field and thermal field coupling model of cable connector are established by the finite element method,and its temperature distribution under different environments are plotted and analyzed. The additional temperature rise and the ampacity change caused by dielectric loss are quantitatively analyzed by example. Example shows that the proposed methods are efficient in security running of the mining cable connector.