Design Of Multifunctional Smart Meter

With the continuous improvement and development of the smart grid,Intelligent electric meter is one of the important basic components of smart grid,Intelligent meter is the "end nerve" of interactive intelligent electricity use,Smart grids also have high requirements for smart meters 。 The intelligent electric meter bears the task of collecting,measuring and transmitting the data of the original power in the smart grid,Intelligent meter is the basis for information integration,analysis and optimization and information display 。 Combined with digital signal processing technology,The intelligent meter needs to give the component of the harmonic in the power grid and analyze the harmonics in the power grid。After meeting the demand of the power grid,The smart meter should develop in a more humanized direction,and it is convenient for users to see the consumption of electricity in real time,This article has done some related research in this area。In view of the shortcomings of the large volume,high cost and poor function of the current smart meter,the research on the multi-function intelligent meter is put forward,Choosing a cost-effective MCU chip--STM32 F as the core component of the smart meter,The versatile function of STM32 F makes the multifunction of the smart meter possible。The design of multi-function intelligent electric meter proposed in this paper is based on the current billing of the smart meter,the remote meter reading,the remote power supply and so on.Taking STM32 F single chip as the core module,There are AC voltage and current detection circuit module,WIFI function module,indicator circuit module,LCD display module,harmonic analysis module,anti stealing electricity and voltage stabilizing circuit module and so on.The AC voltage and AC current value are detected by voltage transformer TV1005 M and current transformer TA1005 M respectively.At the same time,it can realize the function of electricity theft prevention and upload power supply system.Finally,the harmonic data of sampled data can be analyzed to achieve the design of multi-function smart meter.