SU1576990A1 - Device for automatic control of energy consumption - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to simplify the device. The code frequency from the output of converter 1 is proportional to the combined load of the consumer. The pulses from converter 1 are subtracted from the value of the load reference written to counter 6 from setpoint 2. If the value of the current load is greater than the set value, trigger 10 is set to one. Upon the arrival of the control label from timer 5 in register 8, the contents of counter 6 are entered. Decoder 11, by the value obtained in register 8, selects the loads to be disconnected. Through the delay due to the element 7, a new value of the current load is written to the counter 6 and the trigger 10 is set to the zero state. The device allows you to maintain a given power consumption mode throughout the day. 1 il.

Description

The invention relates to the field of electrical engineering, in particular, to automatic control of electrical load at medium and small industrial enterprises, and can also be used to set the power consumption mode at power-consuming facilities.

The purpose of the invention is to simplify the device.

The drawing shows a block diagram of the proposed device.

The device contains a converter of 1 magnitude of power consumption into a unitary code, a load setpoint generator 2, which includes an encoder 3 and a decoder 4, a timer 5, a counter 6, a delay element 7, a register 8, an AND 9 circuit, a trigger 10, a decoder 11 circuit And 12, the amplifiers 13, the pulling entrances of the On-with off 1 load 14.

The device works as follows.

A timer 3, which is a conventional electronic clock, is connected to the outputs of the decoder C of the setpoint 2 load. The decoder 4 selects the time zone output corresponding to real time. This output is fed to the input of the encoder 3, which sets it in correspondence with the value of the average electrical load, which should be in the controlled area of the day. The output of the encoder 3 is connected to the installation inputs of the counter. The entire unit of the setpoint 2 load can be implemented on programmable, for example burning, integrated circuits K55 & PT5.

The signal from timer 5, for example, a three-minute mark, via delay element 7 records the code of the value of the electrical load permitted for a given day zone in counter 6, as well as setting the trigger 10 to the zero state.

Converter 1 converts the energy consumption from the sensors into a unitary code, the frequency of which is proportional to the combined load of the user. The pulses from the transducer 1, arriving at the counting input of the counters, are subtracted from the load value recorded in counter 6 by the installation inputs from the setpoint generator 2 of the loads. In this case, there are two options.

The value of the current load received from converter 1 is greater than the set value. In this case, after the counter is zeroed with an overflow pulse, trigger 10 is set to one state. With the coming of the following

signals from converter 1, counter 6 continues to subtract them. Upon the arrival of the control label with 5 in the register 8, the contents of the counter 6 are entered. For convenience

5 of the use, the entry of the value of the counter 6 is made in the inverse code, so in the register 8 there is a value indicating what value the current load is greater than the specified one. The decoder 11 loads according to the value of the overrun obtained in the register g, selects the corresponding loads to be disconnected, and t-through amplifiers

5 13 a signal is issued to disconnect selected loads 14. Through the delay caused by element 7, a new value of the current load is written to counter 6 and the trigger 10 is set to the zero state.

The value of the current load is less than the specified. In this case, there will be no energy waste. The control label from timer 5 is used to set register 8 to the zero state, i.e. the signal for disconnection of loads 14 involved in power management is removed, and through the delay due to element 7, a record is written to counter 6 of the new

0

five

0

current load values. I

Thus, the proposed device allows maintaining a predetermined power consumption mode throughout the day.

Claims (1)

Invention Formula A device for automatic power management, containing a converter for the consumption of electricity into a unitary code, a timer connected to the load command, the output of which is connected to the first input of the comparator unit, the decoder, the RS flip-flop, logic circuits AND, characterized in that simplify, as a unit of comparison used The output terminal of the load master is connected to the installation input of the counter, the output of the electric power consumption to the unitary code is connected to the information input of the latter, and the device is equipped with a delay circuit, a register and amplifiers, the counter overflow outputs to the S-input of the RS-trigger, the outputs of which are connected to the first inputs of the first and second circuits AND, the output of the first circuit AND connect ten 15 A control reset input / iy register, which controls the recording input is connected to the output of the second circuit And, the information outputs of the register overload connected to the inputs of the decoders, the outputs of which through amplifiers connected to the control inputs On and off electrical loads, the output delay circuit connected with the control input of the counter and with the R input of the overload trigger, the control output of the timer is connected to the input of the delay circuit and to the second inputs of the circuit I.