Method for processing measured values by a data communication device, smart meter gateway device, and data communication system for a power grid

摘要

A method is presented for processing measured values (M) of at least one measuring device (2), in particular a smart meter device, through a data communication device (1), in particular a smart meter gateway device. The data communication device (1) is designed to acquire one or more measured values (M) from the at least one measuring device (2) at a respective acquisition time while it is being fed by a power network, and the acquired measured values (M) at the respective acquisition time by an integrated Clock (U) to assign current time information (T), which represents a current time, in order to have measured values (M (T)) timed with a sufficiently precise time for further processing and / or for transmission to at least one external processing device (5) to be generated if the respective acquisition time is in a certain accuracy time interval since the last synchronization of the integrated clock (U) with an externally (7) provided official time (TS). The method provides that following a return of a failed supply of the data communication device (1) and / or the integrated clock (U) by the power supply system up to a subsequent first synchronization (TS1) of the integrated clock (U) with the official time a previously initialized (S0) time counter (Z) on the occasion of the failure or the return of the power supply continuously provides current internal time information (Tz) for the data communication device (1) (S3); up to the first synchronization (TS1), the data communication device (1) records one or more measured values (M) from the at least one measuring device (2) at a respective acquisition time and, together with the current internal time information (1) provided to the data communication device (1) at the respective acquisition time, ( Tz) saves (S1) as time-marked measured values (M (Tz)); During and / or after the first synchronization (TS1) of the integrated clock with the official time, the data communication device (1) has a time relationship (ZB) between the current provided to the data communication device (1) by the time counter (Z) during the first synchronization (TS1) internal time information (Tz (n)) and the official time (TS1) determined (S4); and then after the first synchronization the data communication device (1) on the basis of the determined time relationship (ZB) records the time-marked measured values (M (Tz)) that are recorded in a specific pre-synchronization acquisition interval (VSE) up to the first synchronization (TS1) and have been stored, transformed into measured values {M (T)} time-stamped with the sufficiently precise time (S5).