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随着我国的电力系统正向高容量、高可靠度、高自动化水平的方向发展,承载着电量输送任务的输配电系统的电力负荷的迅速增加,导致电力输送最薄弱环节联接点发热并形成恶性循环:温升、膨胀、收缩及氧化,电阻增大、再度升温直至酿成事故。
With the development of China’s power system in the direction of high capacity, high reliability and high automation, the power load of the power transmission and distribution system carrying power transmission tasks rapidly increases, resulting in heating at the connection point of the power transmission weakest link Vicious cycle: temperature rise, expansion, contraction and oxidation, resistance increases, heating up again until the accident.