固定测速系统的光伏供电技术与节电策略

Photovoltaic power supply technology and electricity saving strategies for fixed-velocity-measuring system

在对现有高速公路固定测速系统供电方法分析比较的基础上,提出了基于光伏发电技术的固定测速供电方法。根据典型低日照地区的日照条件,对组成光伏系统的各部分进行了专项研究设计,对核心控制器涉及的太阳能电池板最大功率点跟踪技术和蓄电池充放电算法进行了设计,有针对性地提出高速公路固定测速系统节电策略与方法。试验结果表明,控制器高效、稳定,实际应用中能实现固定测速系统全年不间断电力供给,供电效率高,电压、频率稳定。

The electric power supply methods for fixed-velocity-measuring system(FVMS)based on PV technology are proposed after analysis and comparison among the current methods for FVMS on freeway.According to the sunshine condition in typical low sunshine areas,all components consist of PV system are specially designed,including the related maximum power point track(MPPT)technology for solar panel and the charge-discharge algorithm for storage battery in the controller.Targeted electricity saving strategies for FVMS on freeway are put forward.Experimental results show high efficiency and stability of the dedicated controller and in practical application,the specially designed PV system in this paper can provide continuous electric power supply throughout a year in an efficient way,and the output voltage and frequency are steady.