| 摘要 |
This system comprises a first device comprising a member for measuring voltage of a primary conductor, means for sampling the measured voltage, means for transmitting a first message, and means for determining a set of variable values representative of the voltage, based on the voltage measured during a given transmission period; at least one second device having a current sensor for determining intensity in a secondary conductor connected to the primary conductor, means for sampling the measured intensity; and a member for calculating said energy, including means for receiving the first message and being configured for calculating an energy during the given transmission period on the basis of said data set and intensity samples associated with the given transmission period.;The determination means are configured for determining said data set based on a correction coefficient which depends on a value representative of the voltage only for each voltage period where said value is greater than a threshold. |
| 主权项 |
1. A computation system for calculating the electrical energy of an alternating current flowing in at least one secondary electrical conductor, the secondary conductor being electrically connected to a primary electrical conductor, the primary conductor and each secondary conductor having substantially the same alternating voltage, the alternating current having at least one phase.
this computation system including:
a first device comprising a radio transmitter, a measuring member for measuring the voltage of the primary conductor, first sampling means for sampling the value of the measured voltage, message transmitting means for transmitting, following a period of transmission of a first message, the transmission period corresponding to a multiple of voltage periods, the voltage period being equal to the inverse of the frequency of the alternating voltage, and voltage determination means for determining a set of at least one variable value representative of the measured voltage, said data set being determined based on the value of the voltage measured during a given transmission period, with the first message containing said data set;at least one second device comprising a current intensity sensor for determining the intensity of the current flowing in the corresponding secondary conductor, second sampling means for sampling the value of the measured intensity; andat least one computing member for calculating the electrical energy for each phase of said current flowing in the corresponding secondary conductor, the computing member being connected to at least one corresponding second device and including a radio receiver and message reception means for receiving the first message, each computing member being configured for calculating a value for the electrical energy during the given transmission period on the basis of said data set contained in the first message and samples of the intensity associated with the given transmission period, wherein the voltage determination means are configured for determining said data set based further on a correction coefficient associated with the given transmission period, the correction coefficient being, for each phase, a function of a value representative of the voltage only for each corresponding voltage period where said representative value is greater than a predetermined threshold value. |
