A SYSTEM FOR CONTROLLING POWER CONSUMPTION AT A USER OF ELECTRIC POWER

摘要

An electronic system for controlling power consumption at a user supplied with electric power from a power plant, comprises a control unit (10) installed at the user and having a programmable memory (16) for storage of data for controlling the power consumption, parameter-sensing sensors (1, 2, 3, ...) for the supply of input signals to the control unit, an electric meter (11) communicating with the main unit (10) for measuring the total instantaneous consumption of the user, and means (4-6) for connection and disconnection of power-consuming units under the control of the control unit (10). Further, a number of addressable function nodes (4, 5, 6) are connected between the main unit (10) and the various loads (12) and is in both-way communication with the main unit, and the main unit (10) is arranged to transmit addressed messages to the function nodes (4, 5, 6), so that only the nodes with the correct address receive the current messages and execute load-affecting actions based on the message content. The control unit is a main unit (10) having a memory (16) containing a program for controlling the power consumption based on an estimate of the instantaneous consumption as well as on a historical consumption pattern at the user, and the main unit further is arranged to distribute the power consumption by means of a random function distributing the connection of the power-consuming units (12) over a given time interval, the random function being independent of energy plants and other users.