SU1638642A1 - Device for automatic accounting and monitoring power consumption modes - Google Patents

Abstract

The invention relates to devices for automatic metering and control of power consumption by large industrial consumers and can be used for commercial calculations for using electricity and adjusting power consumption. The aim of the invention is to enhance the functionality by providing prompt changes and control of the settings of limits and modes of power and power consumption. transfer information about all limits and the amount of energy consumed by one to the telemeasurement channel at the dispatching point. The goal is achieved by introducing a block 17 temporary (About

Description

multiplexing with appropriate links The description of the invention shows a block diagram of a possible implementation of a temporary multiplexing block 17 The device also contains a block 1 for measuring electrical energy and power, including a counter 6 for electrical energy, a driver 7 pulses and a meter 8 power, block 2 information processing including pulse counters daily consumption 9, monthly consumption

10 and total electricity consumption 11, two threshold elements and 12 o 2, two switches 13 "1 and 13" 2, block 14 of consumption limit settings, control block 15, alarm and indication unit 16, telemechanics unit 3 of the controlled point, telemechanics unit 4 control unit and block 5 registration and storage of information 1 f-ly, 2 1sh "

The invention relates to devices for automatic metering of electricity and control of electricity consumption modes by large industrial consumers and can be used for commercial calculations for the use of electricity and the regulation of electricity consumption modes.

The aim of the invention is to expand the functionality by providing an operational change and monitoring of the setpoints of limits and power consumption modes without using additional telemetry channels.

Fig. 1 shows a block diagram of a device for automatically recording and controlling modes of power consumption; Fig. 2 is a block diagram of a time multiplexing unit.

The device consists (FIG. 1) of an electrical energy and power measurement unit 1, an information processing unit 2, a telemechanics unit 3 of the monitored point, a telemechanics unit 4 of the control unit and a unit 5 for recording and storing information

The unit 1 for measuring electrical energy and power contains a series-connected electrical energy meter 6, a pulse former 7, and also a power meter 8.

Information processing unit 2 includes pulse counters of daily consumption 9, monthly consumption of 10 and total consumption of 11 electricity, two threshold elements and 12 „2, two switches 13„ 1 and 13 „2, block 14 of consumption limit settings, block 15 of control , block 16 of signaling and indication and block 17 of time multiplexing

The output of the power meter 8 is connected to the combined inputs of the first and second threshold elements 12 "1 and 12C2, the outputs of which are connected to the inputs of the first and second switches and 1302 connected to the first and second inputs of the telemechanics unit 3 of the monitored item and the display and alarm unit 16, The output of the driver 7 pulses is connected to the combined inputs of daily meters 9, monthly 10 and total 11 electricity consumption. The outputs of daily meters 9 and 10 monthly electricity consumption are connected to three The third and fourth inputs of the remote control unit 3 of the controlled point, the output of which through the communication line and the remote control unit 4 of the control point is connected to the information recording and storage unit 5. The third and fourth inputs of the signaling and display unit 16 are connected to the outputs of the pulse counters of daily 9 and monthly 10 power consumption The control inputs of the signaling and indication unit 16 are connected to the outputs of the time multiplexing unit 17, the first, second, third and fourth inputs of which are connected to the fifth, sixth, and mym and eighth control inputs of unit 15 connected to the pulse counter reset inputs of the first and second inputs of the daily-screw 9 and 10 months consumption of electricity third and fourth outputs of the control unit 15 are connected to the control inputs of the first and second switches, and 13.2 "The first and second outputs

The power consumption limit setting unit 14 is connected to the control inputs of the first and second threshold elements 12 ' and 12 2. The third and fourth outputs of the power consumption limit setting unit 14 are connected to the control inputs of the pulse meters for daily 9 and monthly power consumption 10. the eighth inputs of the time multiplexing unit 17 are connected to the control input of the second threshold element 1202, the third output of the power consumption limit setting unit 14, the count control input and 10 pulses LfTetanus months consumption of electric power and output of the pulse counter 11, respectively, the total consumption of "The fifth input unit 3 is remotely controlled point connected to an output unit 17 temporarily multiplexing

The time multiplexing unit 17 (Figo 2) consists of the first 18, second 19, third 20 and fourth 21 registers, first 22, second 23, third 24 and fourth 25 multiplexers, encoder 26 of the register address code, generator 27 of a given number of pulses and driver 28 multiplexer address code

The inputs of the register address code encoder 26 and the combined inputs of the generator 27 of a predetermined number of pulses are the first, second, third and fourth inputs of the time multiplexing block 17 The address inputs of all multiplexers are connected to the output of the register address code encoder 26 The combined outputs of the multiplexers are the output of block 17 time multiplexing. The synchronization inputs of the first, second, third, and fourth multiplexers are connected to the first, second, third, and fourth inputs of the time multiplexing unit 17, the output of the generator 27 of a given number of pulses is connected to the address inputs of the multiplexers, the information outputs of which are connected to the first the outputs of the respective registers, the second outputs of which are the outputs of the time multiplexing unit 17 of the C fifth to the eighth inputs of the time multiplex unit 17

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five

the type of multiplexing is connected to the fourth 21, third 20, second 19 and first 18 registers. The control input of the register 18 is connected to the synchronization input of the first multiplexer 22

The device works as follows

Each portion of electrical energy recorded by electric power meter 6 corresponds to one pulse at the output of the pulse shaper 7, to which daily pulse consumption counters 9, monthly consumption 10 and total consumption 11 are connected, fixing the number of portions of electricity consumed. Power meter 8 is connected to two threshold elements 12 "1 and 1202, one of which is triggered when the consumed power reaches the maximum load limit for a given consumer, and g If the power consumption reaches a value close to the permissible maximum load limit (for example, 90%) for preliminary warning of the managers of the enterprise, the settings of the threshold elements 12 and 1.202 and the allowed daily and monthly electricity consumption limits are monitored by counters 9 and 10 pulses are set with the help of the block 14 of the settings of consumption limits. The control block 15 once a calendar day and once a calendar month gives a signal to reset the counters. 9 and 10 pulses, and once a calendar day gives a signal to transmit information recorded by the counter 11 pulses of total consumption (via block 17 time multiplexing) to block 3

5 telemechanics of the controlled point In addition, during the hours of maximum loads, the control unit 15 sends signals to the switches and 13 „2 and connects the threshold elements 12„ 1 and 12 „2

0 to block 3 of the telemechanics of the controlled point Exceeding the limits i of electricity and power consumption over specified values leads to the appearance of signals at the outputs of counters 9 and 10 pulses and triggering of threshold elements and that is fixed by block 16 of signaling and indication Counter outputs 9 and 10 pulses and switches 13 „1 and

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connected to the remote signal inputs of the telemechanics unit 3 of the monitored item The same telemetry input of the telemechanics unit 3 of the monitored item through the time multiplexing unit 17 can provide information both from the counter 11 impulses of total consumption and from the unit 14 of the set limits of consumption limits of the allowed month limits daily and daily electricity consumption and the allowed values of the power consumed during peak load hours. Information from the block 14 of the consumption limit settings It is transmitted through the temporary multiplexing unit 17 also to the signaling and display unit 16. The transmission of information to the telemetry input of the telemechanics unit 3 of the monitored point is organized by the control unit 15 "Information on the consumption and power consumption mode and the set power consumption limits on the communication line L It is transmitted to the remote control unit 4 of the control point, and then to the unit 5 for recording and storing information, which records both the information itself and the time of its arrival,

Information on the required change of the settings for the limits of electrical energy and power consumption is transmitted from the control room to the controlled point by telephone. The service personnel of the monitored point using the block 14 of the settings of consumption limits makes the input of this information (necessary changes of the relevant settings). In this case, information in the binary code is entered into registers 19-21, from the output of which it is transmitted to the signal inputs of multiplexers 23-25 and the inputs of block 16

alarms and indications „I

In order to organize the transmission of information on each of the monitored settings, the control unit 15 at given points of time sends signals to the corresponding inputs of the encoder 26 of the register address code, to the enable input of a specific multiplexer to the start input of the generator 27 of a predetermined number of pulses. 28 code addresses multiplexers, At the set points in time when reading the daily

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50 g with

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Only the multiplexer 23 works, since the resolution signal is only available at the resolution input of this multiplexer. When the pulse generator 27 is operating, the signals of the multiplexer address generator 28 receive signals that sequentially connect the signal inputs of the enabled multiplexer to the output bus. First, information is transmitted from the signal inputs, where the encoder code specifies information, and then the information is transmitted recorded in the corresponding register „

At set points in time, the multiplexer 24 operates for reading the monthly limit, since the resolution signal is only available at the resolution input of this multiplexer. At the set power peak hours, the multiplexer 25 operates.

At 24 o'clock every day, the signal from the control unit enters the enable input of register 18, as a result of which the data contained in the register is displayed at its outputs and at the signal inputs of the multiplexer 22, the same signal from the control unit is fed to the enable input of multiplexer 22 for transmission information on the electricity consumed per day

Thus, over the course of a day, the registers that carry information about the daily and monthly limits, the allowed maximum power and the consumed electricity per day are alternately connected to the same telemetry input of the telemechanics unit 3 of the monitored point. At the receiving point, depending on the received address code of the registers, the information is recorded in the corresponding register, and then the received information is demultiplexed and its registration and indication is given. The introduction of the time multiplexing unit allows Cherskogo point control value setting intake and the allowed maximum power limits without the use of additional communications channels "This makes it possible to significantly increase the efficiency of changing the limits set values and consumption mode, which is particularly important for electric power systems, in which users are located at a considerable distance x from each other"

Claims (1)

Invention Formula 1 o Device for automatic metering and control of power consumption modes, containing in series an electric energy meter and pulse shaper, a power meter connected by an output to the inputs of the first and second J threshold elements, the outputs of which are connected to the inputs of the first and second switches, outputs connected to the first and the second inputs of the telemechanics unit of the controlled point, and 1 also to the first and second inputs of the indication and alarm unit, the output of the pulse shaper from unified with the combined inputs of the daily consumption pulse counter, 2 monthly consumption pulse counter and total consumption pulse counter, the outputs of the daily and monthly consumption pulse counters are connected to the third and fourth inputs 2 of the telemechanics unit of the monitored point, as well as the third and fourth inputs of the alarm unit and indications, respectively, the reset inputs of the pulse counters of daily and monthly 3 consumption are connected to the first and second outputs of the control unit, the third and fourth the outputs of which are connected to the control inputs of the first and second switches, respectively, the control inputs of the first and second threshold elements are connected to the first and second outputs of the consumption limit setting block, the third and fourth outputs of which are connected to the control inputs of the pulse counters of daily and monthly electricity consumption respectively, the output of the telemechanics unit of the controlled point is connected via a communication line to the input of the teleme-, chanika of the control point, the output of which is connected to the input of and registering and storing information about the m - lichayuschees in that, in order to expand the functional capabilities, it entered the temporary multiplexing unit, a group of outputs of which is connected to the control unit input signaling and upravle5 JQ 15 20 25 30 d ", s 0 The fifth, sixth, seventh, and eighth outputs of the control unit are connected to the first, second, third, and fourth inputs of the time multiplexing unit, the fifth, sixth, and seventh inputs of which are connected to the second, third, and fourth outputs of the setting unit of limits ps creb the output of the time multiplexing unit is connected to the fifth input of the telemechanics unit of the controlled point, the eighth input of the time multiplexing unit is connected to the output of the total consumption pulse counter 20. An apparatus according to claim 1, wherein the time multiplexing unit comprises first, second, third and fourth registers, first, second, third and fourth multiplexers, a register address code encoder, a generator of a predetermined number of pulses, a multiplexer address code generator, the first The second, third and fourth inputs of the time multiplexing unit are the inputs of the register address code encoder and connected to the generator inputs of a given number of pulses, the synchronization inputs of the first, second, third and The multiplexers are connected to the corresponding inputs of the time multiplexing unit; the generator output of a given number of pulses is connected to the address inputs of all multiplexers whose combined outputs are the output of the time multiplexing unit; the output of the register address code encoder is connected to the address inputs of all multiplexers multiplexers are connected to the outputs of the respective registers, the second outputs of the registers are the group you the time multiplexing block moves, the fifth, sixth, seventh and eighth inputs of which are connected to the inputs of the first, second, third and fourth registers; the control input of the first register is connected to the synchronization input of the first multiplexer FIG. 2