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(一)概述 SZLT-30B型可控硅自动励磁调节器是用来控制和保护大型水轮发电机的励磁系统及自动调整发电机励磁的成套设备。它是由电器科学研究院和东方电机厂于1968年试制成功,并由哈尔滨宏伟开关厂成批生产。在陈村等水电站和阿尔巴尼亚“毛泽东水电站”发电机组上投入使用。本励磁调节器的原理接线如图9-129所示。它是按发电机机端电压偏差进行调节的,具有正组和负组励磁功率输出。当发电机机端电压降低或短路时,能连续强励到所需要的“顶值”,以提高发电机并联运行的稳定性。由于励磁调节器具有大功率的负组输出,可以实现快速减磁来防止发电机出现过
(A) Overview SZLT-30B SCR automatic excitation regulator is used to control and protect the excitation system of large hydroelectric generators and automatically adjust the generator excitation complete sets of equipment. It is the Institute of Electrical Science and the Dongfang Electrical Machinery Factory trial success in 1968, and by the grand factory in Harbin switch batch production. In Chencun and other hydropower stations and Albania, “Mao Zedong Hydropower Station” generator set put into use. The principle of the excitation regulator wiring as shown in Figure 9-129. It is adjusted according to generator terminal voltage deviation, with positive and negative excitation power output. When the generator terminal voltage is reduced or short-circuited, it can be continuously energized to the required “top” to improve the stability of the parallel operation of the generator. As the excitation regulator has a high-power negative group output, you can achieve rapid demagnetization to prevent the generator appeared