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小水电站的机组之间或输送到电网的并联运行,一般都采用手动并车,即待并的发电机与已运行的机组或与电网达到同步(同频率、同电压)而且同相位的一瞬间,配电人员应迅速操作配电盘上的联络开关合闸。这往往受配电人员熟练和敏捷程度的影响,不易一次准确地并上。过了同步的一瞬间又要等到下一次出现的同步再行并车。每台并车时间要延续二十分钟左右。若错过同步时间而合闸,将会引起待并机组受外电流的反冲,损伤发电机的绝
Small hydropower stations or between the units to the grid parallel operation, are generally used by hand and car, that is pending and the generator has been running or with the grid to achieve synchronization (with the frequency, the same voltage) and the same phase of the moment, Distribution personnel should promptly switch the contact switch on the switchboard. This is often affected by the proficiency and agility of the distribution staff and can not be easily and accurately matched. After the synchronization of the moment and then have to wait until the next synchronization and then car. Each car and time to continue about 20 minutes. If you miss the synchronization time and closing, will cause the unit to be subjected to external current recoil, damage to the generator must