| 摘要 |
<p>1. A method for measuring the electrical power on an alternative current network, wherein samples taken at different time points and representative of the various network electrical magnitudes related to the power or to each power to be measured are transmitted to a computing device through a single channel, characterized : - in that, over a determined time period which is equal to or a multiple of the network half-period, sample groups are respectively taken which comprise groups of a first kind each including at least one couple formed by voltage and current samples related to a desired power and taken in a determined order and with a determined time interval, and groups of a second kind in the same number as the groups of the first kind and each including at least one couple of samples of the same voltage and current as said couples in the groups of the first kind, taken with the same time interval but in a reverse order to said determined order, each group of both kinds comprising samples which are all taken at different times, the distribution of the sampling times of the first kind groups and the distribution of the sampling times of the second kind groups being symmetrical to one another relative to the middle of the sampling period and, - in that the individual powers obtained by multiplying with one another the samples from the couples of the various groups are cumulated.</p> |
