主通风机配电系统快切装置的研制与应用

为解决矿井主通风机供电可靠性技术问题，对失电负荷下变电站母线系统残压过渡过程进行了研究，探讨了在双回路电源切换与备用电源之间自动投入的关系原理的基础上，采用双CPU+CPLD结构设计的双电源快切主控制器和控制软件技术，设计了主通风机的高压配电网快切装置并应用于生产，解决了主通风机对电网供电质量不稳定性技术难题，消除了大面积停电停风的安全风险隐患。工业试验表明，该系统能够实现自动电源切换，简化操作流程，对提高主通风机的安全性、降低维修人员的劳动强度具有实际意义。

Development and application of fast switching device in mine main fan distribution system

In order to solve the technical problem of power supply reliability of mine main fan，the residual voltage transition process of substation bus system under power loss load was studied.On the basis of the principle of the relationship between the switching of double circuit power supply and the automatic switching of standby power supply，the main controller and the control software technology of double power supply fast switching were designed with the structure of double CPU + CPLD.The fast switching device of high voltage distribution network of main fan was designed and applied to production.It solved the technical problem of the instability of the power supply quality of the main fan to the power grid，and eliminated the potential safety risk of large-scale power outage and wind shutdown.Industrial test showed that the system can realize automatic power switching，simplify the operation process，and has practical significance to improve the safety of the main fan and to reduce the labor intensity of maintenance personnel.