Clock management control method and device in electricity consumption information acquisition system

Abstract

The invention discloses a clock management control method and device in an electricity consumption information acquisition system. The method comprises the steps that a master station acquires a time signal of a standard clock source in real time for clock synchronization; the master station periodically inspects the terminal clock; clock states of terminals are obtained and compared, the terminals with out-of-tolerance or abnormal clocks are found out and reported to a master station, and the master station carries out timing on the terminals with out-of-tolerance or abnormal clocks; the terminal periodically inspects the connected electric energy meters, finds out the electric energy meters with out-of-tolerance or abnormal clocks and reports the found electric energy meters to the master station, the master station carries out time checking on the electric energy meters with out-of-tolerance or abnormal clocks, and the terminal periodically carries out broadcast time checking on the connected electric energy meters. The method has the advantages of being easy to implement, high in synchronization efficiency, accurate in clock synchronization and the like, and the overall clock synchronization accurate management of the electricity consumption information acquisition system can be achieved.

Description

technical field [0001] The invention relates to the technical field of electricity consumption information collection systems, in particular to a clock management control method and device in the electricity consumption information collection system. Background technique [0002] There are a large number of measurement and acquisition equipment terminals, electric energy meters, etc. in the low-voltage distribution network station area. Different data communication methods may be used between the master station and the terminal and between the terminal and the electric energy meter according to different application scenarios. For example, between the master station and the terminal The wireless public network is used for data communication between the terminal and the electric energy meter, and the data communication is carried out by RS485 or low-voltage power line carrier / micro-power wireless between the terminal and the energy meter. In order to ensure the accuracy of me...

AI Technical Summary

Problems solved by technology

[0006] 1. Only the clock management of the energy meter can be realized, and the terminal may also have the problem of clock out-of-tolerance or clock anomaly, and the master station may also have the problem of inaccurate clock. According to the traditional synchronization scheme for the energy meter alone, the terminal cannot be guaranteed , the clock accuracy of the master station, there may still be a certain degree of time deviation between the master station and the terminal, between the terminal and the energy meter, and between the pre-standard clocks, and the power consumption information collection system cannot achieve top-down overall precise clock management

[0007] 2. The topological structure in the station area is complex, and there are a large number of electric energy meters. The main station directly calls and measures all the electric energy meters. It needs to process the time synchronization of a large number of electric energy meters at the same time. The data processing capacity of the main station is huge and This leads to processing delays, so that it is impossible to complete the precise time synchronization of all large-scale electric energy meters at the same time, that is, the clock synchronization accuracy and efficiency are not high

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