SU1310844A1 - Device for checking electric power consumption - Google Patents

Abstract

The invention relates to computing. The aim of the invention is to improve the accuracy of determining the current power consumption of electricity. The device contains a period determination unit 1, which includes an OR 2 element, a counter 3, an OR 4 element, memory nodes 5, 6, a group of 7 OR elements, an OR 8 element, an information receiving block 9, electric power consumption sensors 10, a reverse number driver in the direct code, the shaper 12 is the inverse of the number in the additional code, the adder 13, the multiplication unit 14, the setting memory block 15, accumulating the adder 16, the block 17 prev (L fT D.LL.I 1; I LJ 00 00

Description

code-analog unit, control block 18, switch on element 19, trigger 20, clock generator 21, elements 22, 23, nodes 24, 25

one

The invention relates to computing.

The aim of the invention is to improve the accuracy of determining the magnitude of the current power consumption of electricity.

FIG. 1 shows a block diagram of the device; in fig. 2 - diagram of the operation of the device.

The device contains a period determination unit 1, which includes an element OR 2, a counter 3, an element OR 4, a node 5 of memory, a node 6 of memory, a group of 7 elements OR, an element OR 8, a block 9 of receiving information, an energy consumption sensor 10, a driver 11 reverse value of the number in the direct code, shaper 12 reverse value of the number in the additional code, adder 13, multiplication unit 14, setpoint memory unit 15, accumulator adder 16, code-analog conversion unit 17, control unit 18, including AND 19 trigger element 20 modes, generator 21 clock pulses, And 22, 23 elements of synchronization nodes 24 and 25, amplifiers 26, address-27 counter, remote control 28, trigger 29, outputs 30-34 of node 24 i, outputs 35-39 of node 25.

To improve the accuracy of monitoring the magnitude of the current combined power, the power value is corrected for the arrival of each signal from the power consumption sensor.

The value of the power (P, -) for each; the sensor i is determined by the pressure of the weight coefficient (b) for the time () for which this energy quantum was generated:

R,. B, - / t.

The weight value is determined by the expression

B, - K; in K-n / a. ,

synchronization, controllers 26, address counter 27, remote control 28, trigger 29, outputs 30-34 of node 24, outputs 35-39 of node 25. 2 Il.

TO

1T

transformation ratios of the corresponding current and voltage transformers;

0

five

0

five

0

five

but ;

electric meter constant, expressing the number of pulses per 1 kW / h.

When determining the current combined power of the consumer, which is powered from several inputs and has sub-subscribers, only in the first period in the case of synchronous start of the counters, the current power () is determined

M R.

B;

 tech

where P; Pi

N--UK

Z .. t; Y-): And i

 +1, when the input supply -1, when the subscriber is connected;

number of different inputs and sub-subscribers.

In the general case, when determining the current combined power, it is necessary constantly with the arrival of a new impulse to update the current value, replace the received value of the power, this input is the same. To simplify this operation, it is possible to operate with increments of the reciprocal of the pulse periods, i.e.

N

 tech

 5 Р (-1 - J-) h

 1.1 T

i l 1 i

where K is the current value of the period; K-1 is the previous value of the period.

The device works as follows.

Before starting the device, the operator, based on the specific power supply of the consumer, from the console 28 enters the weight factors (L,) of the sensors 10,

also the sign with which the power consumption should be taken into account when determining the total power consumed from the console 28. This signal sets the initial zero state of nodes 24 and 25, the address counter 27 and the trigger 29. Element 19 from the trigger 29 closes the output SHSh 2, the counter 3 is set to the zero state, through the SHSh 4 element, the memory node 6 is set to the recording mode, through the OR 8 element, the memory node 5 is set to the recording position, the adder 16 is also set to the zero state. The trigger 20 may be in any state. If it is accidentally installed in a single state, the signals from the generator 21 are fed through the element AND 22 to the input of the node 24. The outputs 30-33 of the node 24 do not affect the operation of the device due to the prevailing effect of the signal-. the initial setup, and with the arrival of the sync pulse 34, the trigger 20 is set to the zero state. From this moment or in case of accidental installation of the trigger 20, the signals from the remote control 28 reset the signals from the generator 21 through the element 23 to the input of the node 25. At the same time, the amplifiers 26 are opened, and the input of the block 9 from the single output of the trigger 20 is inhibited issuing an address, so that the address input of nodes 6 and 5 is fed through amplifiers 26 and a group of 7 elements of the SHW outputs of the bits of counter 27. The outputs 35-38 of node 25 due to the prevailing effect of the installation outputs of trigger 29 do not affect the operation of the device, only 39 will be added each cycle in the counter 27 addresses one by one, i.e. all cells of nodes 5 and 6 are searched, and zeros are written to them. When the address 27 counter overflows, the overflow signal sets the trigger 29 to one state and the device is ready for operation.

 The sync pulse from output 35 of node 27 analyzes the presence of the signal of the information sign from the information receiving unit 9. If there is no indication of the information, then the sync pulse from output 36 into counter 3 records the contents of memory node 6. According to the sync pulse from output 37 to the scoreO

five

0

Chick 3 is added 1, and on sync pulse from output 38, the new contents of counter 3 are written to node 6. On the sync pulse from output 39, one is added to the address meter 27. This process will be repeated until the information signal is received from the information receiving unit 9. In this case, according to the sync pulse from output 35, the trigger 20 is set to one. The zero output of the trigger 20 closes the element And 23 and the amplifiers 26, and a single output opens the element And 22 and at the same time gives permission to issue the address of the polled sensor from block 9.

Thus, the contents of the cells of nodes 5 and 6 corresponding to the address of the sensor being polled are fed to the inputs of operators 11 and 12. Shaper 11 converts the time of the current period (T) in binary code to the reciprocal (I / T J). Shaper 12 converts the time value of the previous period (T-) to the inverse () value in the additional binary code.

The adder 13 performs arithmetic addition of two values and outputs the result to multiplication unit 1.4. At the same time, the other factors of the multiplication unit 14 receive the weighting factor of the polled sensor along with the sign that determines the type of consumer controlled by this sensor (subsubceptor, own consumption, own production, etc.).

According to the clock pulse from the output 30, the block 14 multiplies and outputs the result to the input of the adder 16, which from the clock 31 produces the received result with its sign. At the same time, the counter 3 is reset.

Sync from output 32 is used to rewrite the contents of node 0.

five

0

la 6 memories of the selected sensor in the node

memory 5.

The sync pulse from output 33 is used to record the contents of account 3 into memory node 6.

According to the clock pulse from the output 34, the trigger 20 is set to the zero state and the countdown of the time of the current period begins again.

513

. From the diagram (Fig. 2) it can be seen that the survey on the appearance of a sign of information is almost all the time. The processing time of the information attribute must be less than one, divided by the number of sensors multiplied by the frequency of information signals, which is realizable at speed, for example, K155 series microcircuits.

The error in determining the current power of the consumer with such a technical implementation of the device at the level of 0.6%.

Claims (1)

Invention Formula A device for monitoring power consumption, containing an information receiving unit, whose information inputs are information inputs of the device, a multiplication unit, the multiplicative input of which is connected to the information output of the setting memory, the output of the multiplication unit is connected to the information input of the accumulating adder, the outputs of which are connected to the first information output of the device and to the converter input a code analog, the output of which is the second information output of the device, the control unit, contains A clock generator, a remote control, the information output of which is connected to the information input of the settings memory block, characterized in that, in order to increase the accuracy of determining the current power consumption, the reverse code value driver is inserted into the reverse code the numbers in the additional code, the sumrator, the period definition block, which includes the OR elements, the OR group of elements, the counter and two memory nodes, and the address counter are entered into the control unit, amplifiers, two triggers, two synchronization nodes and three elements And, the output of the first of which is connected to the INPUT of the installation of the first trigger, the direct output of which is connected to the first input of the second element And, to the input of the prohibition of the address of the information receiving block, the inverse output of the first trigger - Mu input of the third element And to pack five 0 five 0 five 0 five 0 five the second inputs of the second and third elements And are connected to the output of the clock generator, the output of the second element And is connected to the information input of the first synchronization node, the output of the third element And is connected to the information input of the second synchronization node, the address output of the console is connected to the information input of the address counter, the installation output of the console is connected to the installation inputs of the first and second synchronization nodes, the address counter and to the reset input of the second trigger, the input is set Which is connected to the overflow output of the address counter, the direct output of the second trigger is connected to the first inputs of the first, second and third OR elements of the period determination unit, to the setup input of the accumulating adder and to the first input of the first element, the address outputs of the address counter bits are connected to informational the inputs of amplifiers, the outputs of which are connected respectively to the first inputs of the elements of the OR group of the period determination unit, the second inputs of which are connected to the address output of the information receiving unit, the outputs of the OR elements of the group are connected to the address inputs of the first and second memory nodes and the memory block of the settings, the recording input of the first memory node is connected to the output of the first OR element, the output of the second OR element is connected to the recording input of the second memory node, the third element OR connected to the installation input of the counter, the output of which is connected to the information input of the second memory node, the information output of which is connected to the information input of the counter and the first memory node and to the input of the reverse value generator the numbers in the forward code and the information output of the first memory node are connected to the input of the reverse number generator in the additional code, the outputs of the reverse number generator in the forward and additional code are connected respectively to the inputs of the first and second terms of the adder, the information output of the information receiving unit connected to the second input of the first element And, the outputs of the first 713 the second synchronization node is connected respectively to the clock input of the multiplication unit, to the second inputs of the first, second and third OR elements and to the reset input of the first trigger; the outputs of the second synchronization node are connected to the third one, respectively 55 Igig P Compiled by A.Zherenov Editor N.Gorvat Tekhred L.Oleinik Proofreader S.Shekmar Order 1893/46 Circulation 673 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 08448 to the input of the first element I, to the input of the record and to the counting input of the counter, to the third input of the second element OR, and to the counting input of the counter 5 addresses, the output of the adder, is connected to the input of the multiplier of the multiplication unit. Phia.2