摘要
为实现给煤机持续可靠的运行,通过仿真实验,提出低电压穿越系统改造方案:采用ME双电源切换开关,同时,将并联升压电路应用于该低电压穿越系统中,并采用1台低电压穿越装置拖动1台变频器的模式。结果表明,当变频器输入电压跌落或者升高时,变频器始终能够保持正常运行,不会因给煤机电源波动性变化而出现跳闸停机现象,验证了该改造方案的可行性。
To achieve continuous and reliable operation of the coal feeder,a transformation scheme for the low-voltage crossing system is proposed through simulation experiments:a ME dual power supply switching switch is adopted,and simultaneously,a parallel booster circuit is applied to this low-voltage crossing system,with the mode of one low-voltage crossing device driving one frequency converter being employed.The results show that when the input voltage of the frequency converter drops or rises,the frequency converter can always maintain normal operation and will not experience trip shutdown due to the fluctuating changes in the power supply of the coal feeder,thus verifying the feasibility of this transformation scheme.
作者
任冠群
REN Guanqun(Mechanical and Electrical Supply Department of Xishan Coal Power Dongqu Coal Preparation Plant,Taiyuan,Shanxi 030200,China)
出处
《自动化应用》
2025年第15期112-114,共3页
Automation Application
关键词
给煤机
低电压穿越装置
双电源切换
并联升压电路
coal feeder
low-voltage crossing device
dual power supply switching
parallel booster circuit
