基于71M6513的三相电网参数监测系统

Design and Development of Three Phase Network Parameter Monitoring System Based on 71M6513

针对三相电网检测系统的设计流程进行了分析,阐述了系统的总体研究方案及设计思路;重点研究如何提高输入端电压和电流的精确度。设计了前端降压降流电路与数据远程传送电路,编制了数据的采样、计算处理等程序,实现了电网参数的实时检测与电能的计算,数据远程传送;基于.net平台,设计上位机软件,将接收的数据存入数据库,并实现电网参数与电能的日、周、月的平均值计算,供用户实时查询。该系统检测电网的三相电压、三相电流、频率、有功功率、无功功率等参数,这些实时检测的数据可为电网质量的分析提供可靠依据。

The design process of three phase network parameter monitoring system was analyzed,the overall research scheme and design idea of the system wee expounded.Studies on how to improve the accuracy of input voltage and current were included.The front-end voltage decreasing,current dropping circuit and remote data transmission circuit were designed.The programs of the data acquisition and calculation were made,real-time detection of power network parameters,energy calculation and the remote data transmission were achieved.Based on.Net platform,the host computer software was designed to receive the data and store them in the database.The mean value of power and energy parameters are calculated by the day,the week and the month,which are available to the user for inquiry.Many parameters such as three-phase voltage,three-phase current,frequency,active power,reactive power and voltage harmonics,can be detected by the system,which will provide a reliable basis for power quality analysis.