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1常规备用电源自动投入装置当前,备用电源自动投入装置(简称BZT)在发电厂、变电站得到了广泛的应用。无论是10kV还是6kV系统,较为典型的一次接线如图1所示。其传统控制操作有如下特点:(1)正常情况下,两套电源并列运行,3DL断开;(2)因失电或其它原因使1DL或2DL断开时,3DL自动投入
A conventional backup power automatic input device Currently, backup power automatic input device (referred to as BZT) in power plants, substations has been widely used. Whether it is 10kV or 6kV system, a typical connection as shown in Figure 1. Its traditional control operation has the following features: (1) Under normal circumstances, the two sets of power running in parallel, 3DL disconnect; (2) due to loss of power or other reasons to disconnect 1DL or 2DL, 3DL automatically