Method for data acquisition of a current or voltage signal

摘要

The invention relates to a method for data acquisition of a signal representing a current or voltage of a power carrying conductor in a medium or high voltage power network, said signal comprising a waveform of continuously repeating elements, the method comprising the following steps:
a) sampling the signal for a defined first time period to capture a first signal comprising a single period of the waveform with a sensing unit, wherein the sampling is stopped after the defined first time period for a defined second time period;
b) transmitting the first signal with a communication unit from the sensing unit to a central unit;
c) sampling the signal for the defined first time period after the end of the defined second time period with the sensing unit to capture a second signal comprising another single period of the waveform;
d) transmitting the second signal with the communication unit from the sensing unit to the central unit;
wherein the central unit copies the first signal until it receives the second signal form the sensing unit.