基于变电站测控数字量的自适应备自投联切装置

An Adaptive Automatic Switching Device Based on Substation Digital Data

基于传统备自投装置联切负荷时缺乏灵活性的缺点,文中提出一种自适应备自投联切装置,对其工作原理进行了介绍,论述了装置与变电站综自系统的信息交互,研究了备自投联切装置在站内设备均正常运行或可能故障状态下的控制流程。该装置能够根据实时变化的负荷情况智能化切除次重要负荷,避免了备自投动作后造成变压器过载导致的事故范围扩大,从而获得良好的供电可靠性和经济性。

Traditional automatic switching device lacks of flexibility in load-shedding. Adaptive automatic switching device is proposed to against the defect of traditional device. This paper introduces the principle of adaptive automatic switching device. Information interaction between the device and the substation integration automation system is discussed. The control processes of station equipment in the cases of normal state and fault state are studied. The proposed device intelligently shed less-important load according to real-time load situation. This approach can avoid fault expand brought by transformer overload after automatic switching device activated. It helps to improve power supply reliability and economy.