Theoretical Analysis and Experimental Verification on Mathematical and Physical Model of Gas-Liquid-Solid Insulation System
Liu Zhi1,2, Ruan Lin1
1. Insititute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2. School of Electronic and Telecommunications Engineering University of Chinese Academy of Sciences Beijing 100049 China
Abstract：Gas-liquid-solid insulation system in stator slot consists of thinned mica insulation, two-phase evaporative cooling medium and wrapping material used to fix stator bar. A simplified physical model of gas-liquid-solid insulation system based on the structural features was established in this paper. On the basis of the physical model, mathematical model of each insulation parameter in the new insulation system was put forward concretely. Furthermore, insulation thickness, mainstream temperature and Jacob number of boiling evaporative cooling medium were identified as relevant influencing factors of the new insulation system. And influence of the abovementioned factors on capacitance and dielectric loss tangent of insulation system was analyzed severally. At last, the correctness of theoretical analysis on mathematical and physics model was validated by insulation test.
刘直, 阮琳. 气液固三相绝缘体系数学物理模型的理论分析与实验验证[J]. 电工技术学报, 2018, 33(9): 2097-2104.
Liu Zhi, Ruan Lin. Theoretical Analysis and Experimental Verification on Mathematical and Physical Model of Gas-Liquid-Solid Insulation System. Transactions of China Electrotechnical Society, 2018, 33(9): 2097-2104.
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2018, Vol. 33 
