Discussion on design scheme of clock circuit in twin-core electricity meter

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Tang, Dengping^1 ; Ding, Li^1 ; Li, Fan^1 ; Wei, Wei^1

State Grid Hubei Electric Power Company Measurement Center, Hubei Wuhan, China^1

关键词: Accurate measurement;    Clock circuits;    Design scheme;    Development directions;    Electricity meters;    Management functions;    Occurrence probability;    Voltage loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/3/032104/pdf
DOI  :  10.1088/1757-899X/452/3/032104

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Electricity meter based on the IR46 standard can integrate accurate measurement and online upgrade of its management function. It is the development direction of smart electricity meter in the next generation. In this paper, a topology of twin-core electricity meter is proposed, which realizes the separation of MCU of metering and MCU of management. For the problem of voltage loss of clock battery of the smart electricity meter, the clock circuit of twin-core electricity meter is designed. The scheme of clock battery with lithium battery and supercapacitor is proposed. It can effectively reduce the occurrence probability of voltage loss of clock battery in field operation. It provides theoretical guidance for the clock circuit's design of smart electricity meter in the new generation.