改进600MW机组电气设计的几个要点

Key Points for Improvement of Electrical Design of 600 MW Units

600MW机组逐渐成为电力系统的主力机组,其运行的安全性和可靠性越来越重要,对电气设计提出了更高的要求。因此,必须改进电气设计,要点是同期装置的双重化设置、交流不停电装置的冗余配置、装设发电机出口断路器(GCB)、加强主保护、提高保护用CT的性能和改进厂用电系统的接线及控制方式等。

The 600 MW units have become the main units in the power systems gradually and their operation safety and reliability have become more and more important. As a result, the higher requirements have been put forward to their electrical design. So their Key points are placed on double arrangement of the synchronized device, surplus arrangement of AC uninterrupted power device, installation of GCB, enhancing the main protection, improving the property of protective CT and wiring of auxiliary power system and control mode, etc.