运行中氢冷发电机湿度的合理控制

Appropriate Control of the Humidity of H 2 in H 2 Cooled Generator During Operation

根据国外资料和国内有关机组的运行经验，指出了氢冷发电机不论在停机或运转工况下，机内相对湿度控制在５０％以下是足够安全的。由于停机与带负荷运转时，机内温度可能有很大差异，同样含湿量（或同样露点）的氢气在高温环境下，对应的相对湿度较低温环境下为低。因此，规定停机与运转工况下，执行不同的露点限值是合理的。

According to the operating experience in home and abroad, the H 2 cooled generator will be in safety condition if the relative humidity in the generator is controlled under 50% weather in shut down or operating condition. Due to the large temperature difference in generator between shut down and operation condition. H 2 with the same moisture content (or the same dewpoint) at high temperature will have a lower corresponding relative humidity than that at low temperature. Consequently, it is reasonable to excecute different dewpoint limiting value under shut down and operating condition.