This design is based on the wireless monitoring system of yantai city streetlight , and is mainly about improvement of present system in hardware and software parts . with advanced mcu , this system applies fft to filter high frequency noise 本设计对原有路灯rtu软硬件重新设计,硬件电路从元件选型到电路结构设计都做了重大改进,由于采用高性能微控制器,软件中采用fft计算输入交流信号有效值。
This paper talks about how to design a remote harmoic distrubtion measurement system and how to implement it . it talks about harmonic measurement algorithm , accuracy improve methods , robustness of the rtu ( remote terminal unit ) and data security of the rtu 本文就谐波计算的算法,谐波计算精确性的提高, rtu ( remoteterminalunit远程终端设备)程序的可靠性、 rtu数据的安全性等问题进行了详细研究。
That makes low voltage distribution system instrument design , install and debug simply . communication technologies used satisfy it all kinds of local functions which low voltage distribution automation system needs , at the same time , as a rtu unit of dispatch automation 通信技术的应用,使本单元既可以实现低压配电自动化所必需的各种当地功能,也可以作为rtu与上一级控制中心连成调度自动化系统。
Due to limited communication ways supported , traditional rtu is difficult to meet the demands of scada system in many fields such as electric power , irrigation , petroleum , environment etc . this has influenced the information modernizing process of the whole society 传统的rtu设备,支持的通信方式很有限,难于满足scada系统在电力、水利、石油和环境等众多领域中运用的需要,影响了整个社会信息化工作的进程。
Then this scheme is materialized by an integrated program named control of the parallel connection of arc - extinction coils , which can receive the data from rtu and send the control commends through the special database that is connected with ems of distribution network 然后利用一套完整的消弧线圈并联运行控制程序把上述方案体现出来。此控制程序通过专用数据库与配电网ems系统接口,进行接受数据和下达控制命令。