The Design Of Distribution Transformer Monitoring System Based On GPS Timing Location

As we all know,electricity is everywhere in our daily life.Since entering the 21 st century,with the rapid development of economy,people have put forward higher requirements for the reliability of power supply and the quality of power supply.As the important part of power system that connected with the user directly and distribute electrical energy for the people,power distribution system have a direct impact on people's lives.Time synchronization equipment play an important role to provide reliable power supply and improve the quality of power supply.First of all,starting from the research significance and the background of this topic,this paper analyzes the current state of power grid and the role of distribution parameter acquisition automation in smart grid from the perspective of power,so as to put forward the importance of real time monitoring in power distribution automation.Through the analysis of the development of satellite timing,positioning technology and the current situation,and according to the design goals of the distribution transformer monitoring system,to build the real-time distribution transformer monitoring system based on GPS timing positioning,which the NEO-6M series NEO-6M-0-001 produced by U-Blox Company of Switzerland is used as the GPS receiver module and the STC12C5A60S2 is used as the core controller.Secondly,the whole system is divided into two parts: power distribution transformer multi-parameter acquisition and GPS timing positioning.Distribution transformer parameter acquisition consists of three-phase voltage/current sampling circuit,signal regulating circuit,ADC0809 conversion circuit,SA9105 F electric energy metering circuit and electric parameter storage part;GPS timing and positioning,including signal receiving circuit,LCD12864 display circuit of time and latitude and longitude,clock circuit and other parts.Then respectively do appropriate circuit analysis and design of the above modules,and make hardware and software design of the two parts of the distribution transformer multi parameter acquisitionand the GPS timing positioning,finally,PROTEUS simulation and circuit construction of the above circuit are carried out to realize the two functions of multi parameter acquisition and GPS timing positioning of distribution transformer.Finally,the distribution transformer parameter acquisition module and the GPS time service positioning module are integrated,here through the CD4052 switch with software to realize the entire system parameters acquisition and the communication with the host computer.The monitoring circuit of operating parameters of distribution transformer based on GPS synchronization timing,which can complete the data acquisition of three-phase voltage,three-phase current and active energy of power distribution transformer,and calculation and control processing and other functions.