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从水轮发电机温升产生的原理及分布出发，论述了降低温升的主要途径和措施，并重点介绍了电机通风系统的改造对降低电机温升，提高电机容量的作用，探讨了用制冷水取代江河水，作为空气冷却器的冷却介质，以提高电机出力的可能性。
Starting from the principle and distribution of temperature rise of hydro-generator, the main ways and measures to reduce temperature rise are discussed. The modification of motor ventilation system is mainly introduced to reduce the motor temperature rise and increase the motor capacity. Water replaces river water, as a cooling medium for air coolers, to increase the possibility of motor output.