Aiming at the inaccurate clock calibration of electric meters and the shortcomings of traditional clock synchronization methods, this article briefly summarizes the reasons of inaccurate meter clocks, and proposes a method of electric meter clock calibration based on wireless communication, which solves the problem of meter clock synchronization accuracy. It is verified by field test. The test results show that the error of electric meters clock after clock calibration can be controlled at the second level. And the data error of collected import active electrical energy is smaller, which meets the requirements of real-time analysis of electricity spot trading and other businesses, providing more accurate data to ensure the results reliability.
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