摘要
高压输电线路上的电子监测设备供电问题是目前工程应用中的难点和关键点。研究稳定、可靠并且可以持续供电的电源具有重要的价值。对此,提出了一种应用于高压侧电子监测装置中的电源方案。电流互感器从输电线上感应获得电能,经过整流电路、滤波电路、直流稳压电路,可以获得电子监测设备所需的低压、直流电源。试验结果表明,在输电线路电流为0～1 000 A的范围内,取电电路可以得到稳定的+5 V的直流电压,无电源死区。该研究成功地解决了高压侧有源电子装置的电源供电问题。这种将"强电"转化为"弱电"、从高压上获取电能的方式,不仅可以应用于高压输电线,还可以应用于高铁接触线上的监测设备供电,应用前景广阔。
Supplying power for electronic monitoring equipment on high voltage transmission lines is the difficulty and key point in current engineering applications.It is of great significance to develop stable,reliable and sustainable power supply.To solve this problem,a power supply scheme for electronic monitoring devices at high voltage side is proposed.Current transformer can obtain electrical energy from transmission line.Through rectifier circuit,filter circuit and DC voltage stabilization circuit,low voltage and DC power supply for electronic monitoring equipment can be obtained.The test results show that in the range of transmission line current from 0 to 1 000 A,the DC voltage of + 5 V can be stabilized without power dead zone.This research successfully solves the power supply problem of the high voltage side active electronic device.This way of transforming "heavy electricity" into "weak electricity" and obtaining electric energy from high voltage can be applied not only in high voltage transmission lines,but also in the power supply of monitoring equipment on high-speed rail contact lines,which has broad application prospects.
作者
李武云
江虹
何小利
LI Wuyun;JIANG Hong;HE Xiaoli(School of Information Engineering,Southwest University of Science and Technology,Mianyang 621000,China)
出处
《自动化仪表》
CAS
2019年第2期23-25,29,共4页
Process Automation Instrumentation
基金
国家自然科学基金面上基金资助项目(61771410)
关键词
电流互感器
感应
电源
高压母线
稳压处理
监测
供电
大电流
Current transformer
Induction
Power supply
High voltage bus
Voltage stabilizing treatment
Monitoring
High current
