论文部分内容阅读
随着发电机单机容量的增大,发电机定子绕组对地的电容量越来越大,因此为了进行工频交流耐压试验,往往需要很大容量的电源设备。从我们新安江电厂75,000千瓦的水轮发电机的情况来看,为进行定子1.5倍额定电压的工频交流耐压试验,试验装置容量约需100千伏安。随着电机容量的增大,试验装置的容量也跟着增加,而采用大容量的试验装置造价高,搬运困难,还会给现场试验工作带来很大
With the increase of generator unit capacity, the capacitance of generator stator winding to ground is getting larger and larger. Therefore, in order to carry out AC-withstand test of power frequency, it often requires a large capacity of power supply equipment. From the situation of our 75,000kw hydro-generator in Xin’anjiang Power Plant, the test equipment has a capacity of about 100 kVA for 1.5 times the rated AC power voltage withstand test of the stator. As the motor capacity increases, the capacity of the test device also increases, while the use of large-capacity test device cost is high, handling difficulties, but also to the field test work has brought great