一种智能型双电源切换方式在三相220V工况下的应用

Application of a Kind of Intelligent Dual Power Supply Switching Mode in Three-Phase 220 V Working Condition

介绍了一种可以应用于三相220 V供电系统的智能型双电源切换方式。该方式主要通过备自投装置和接触器的配合实现电源智能切换,对其电气回路图进行了分析,并对比了纯接触器和继电器组合型的优势。通过实际安装测试,证实了该方式的可行性和可靠性,经在古巴Sancti Spiritus变电站SVC工程水冷系统中的应用,取得了良好效果。

Introduction was made to a kind of intelligent dual power supply switching in three-phase 220 V power supply system. This method mainly coordinated the automatic bus transfer equipment with the contactor to realize the intelligent switching of power supply, ana- lyzed the electrical circuit diagram and contrasted the advantages of the pure single contactor with those of the contactor combined with a relay, Its feasibility and reliability are confirmed through the actual installation and test. And it is finally used in water cooling system of Cuba Sancti Spiritus substation static var compensator proiect （SVC）.