Power Distribution Monitoring System Based On Modbus And GPRS

With the rapid development of power market,the coverage of power supply is becoming more and more widespread,and people are increasingly aware of the efficient use of power.At the same time,due to the development of science and technology,the degree of industrial automation has been improved,and many electronic devices have been introduced into the power system,which has raised the stability requirements of the power system.Based on the above background,combined with the research status and development trend of distribution monitoring system,a complete set of distribution monitoring system scheme is put forward,and the design ideas and technical line of each part are discussed in detail.This paper discusses the scheme of modularized acquisition,on-site monitoring and remote monitoring for distribution operation information.The whole system consists of three parts: data acquisition unit,field monitoring unit and remote monitoring unit.The data acquisition unit takes ARM as the control core.It mainly introduces the modular structure of the unit,and the design of voltage sampling,current sampling,energy metering,temperature acquisition,RS485 interface,power down protection and other circuits.The field monitoring unit is supported by Linux system platform.It describes in detail the design and implementation of the general human-machine interface,the serial communication process based on Modbus communication protocol,the protocol design and communication realization of GPRS communication module.The remote monitoring unit mainly discusses from three aspects: the server,the database and the Android client.This unit expounds the communication protocol design of the Web server,the software design of the database.It focuses on the design and implementation of the Android client.After the completion of the system,the function modules and data transmission reliability of the power distribution monitoring system are tested and perfected,and the system is applied in enterprises.This paper comprehensively uses embedded development technology,serial communication technology,GPRS remote communication technology and Android mobile terminal development technology to complete the distribution monitoring system.The system has the characteristics of versatility,combination of various monitoring methods,simple human-computer interface and so on.It meets the monitoring requirements of modern power system.