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110千伏油纸绝缘本质安全套管
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南网科研院成功研制首支防爆型套管装备
Zhong Guo Dian Li Bao· 2026-02-02 06:48
Core Viewpoint - The South Grid Research Institute has developed the world's first 110 kV oil-paper insulated intrinsically safe bushing with multiple protective capabilities, addressing long-standing issues related to bushing failure and explosion in power grid operations [1][2]. Group 1: Product Development - The new bushing integrates features such as explosion-proof, pressure relief, anti-misoperation, sealing redundancy design, and non-electric quantity monitoring protection warning [1]. - The project team has created a comprehensive explosion-proof protection system for bushings, overcoming technical bottlenecks related to the lack of standards for explosion-proof design in oil-paper bushings [1]. Group 2: Testing and Reliability - The intrinsically safe bushing has demonstrated exceptional reliability, withstanding 1.2 times the maximum fault energy recorded for 110 kV bushings within the South Grid during simulated severe arc fault tests [2]. - The bushing has undergone extensive testing in extreme conditions, maintaining structural sealing and electrical performance stability under full voltage, full current, temperature-mechanical cyclic stress, and vibration [2].