摘要
在分析煤矿井下供配电系统经常因瞬时失压而造成大面积停电现象的基础上,提出了一种采用倍压整流电路给电容充电并控制电容恒流放电的失压延时保护电路设计方案,详细介绍了该电路的设计思想和工作原理。实际应用表明,该保护电路设计成本低,安全可靠;与失压延时保护器和专用高压综合保护器配合使用,能有效解决传统高压开关存在的延时时间不可控等问题。
The paper proposed a design scheme of time-delay protection circuit for voltage-loss on the basis of analysis of large-scale power failure phenomenon of power supply and distribution system of underground coal mine due to transient voltage-loss, and introduced design idea and working principle of the circuit in details. The circuit uses double rectifier to charge capacitance and control constant discharge of capacitance. The practical application shows that the circuit has low design cost, is reliable and safe, can effectively solve existing issues of traditional high-voltage switch such as delay time is not controllable combining with time-delay protector and high-voltage integrated protector.
出处
《工矿自动化》
北大核心
2013年第11期110-112,共3页
Journal Of Mine Automation
基金
天地(常州)自动化股份有限公司研发项目(12SY009)
关键词
隔爆高压开关
失压保护
延时保护
倍压整流
恒流放电
high-voltage flameproof switch
voltage-loss protection
time-delay protection
double rectify
constant discharge
