SU1401387A1 - Device for checking the process of electric power consumption - Google Patents

Abstract

The invention relates to the field of energy measurements and improves the quality of the dispatching control of the power consumption of an enterprise. The device contains a meter of 1 power of electricity and a block of 8 model parameters. Blocks 4 and 5 time intervals, drive 2, block 9 of the model of the process of electric power consumption, switch 6, block 7 of subtraction and block 3 of the indication are entered into the device. In this case, using blocks 4, 5, 6, 2, 9, 7, a synchronous intraframe measurement of the deviation of the actual energy consumed from the model consumption occurs. The measured deviation of the power consumption is recorded by means of the display unit 3. Using blocks 8 and 9, a set of possible consumption patterns is carried out. 1 il.

Description

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The invention relates to the field of energy measurements and can be used in the field control centers for controlling the mode of power consumption of industrial objects.

The purpose of the invention is to improve the quality of the dispatching regulation of power consumption of an enterprise.

The drawing shows a block diagram of a device for controlling the process of electricity consumption.

The device contains an electric power meter 1, a drive 2, an indication unit 3, a first block 4, time intervals, a second block 5 time slots, a switch 6, a subtractor 7, a model parameter block 8, a power consumption model block 9, the meter output 1 power is connected to the first input of the drive 2, the second input of which is connected to the first output of the first block of 4 time intervals, and the output is connected to the first input of the switch 6, the second and third inputs of which are connected respectively to the output Give the second block 5 time slots and block 9 models of power consumption processes, the first input of the second block 5 time intervals is connected to the second output of the first block 4 time intervals and the first input of block 9 models of power consumption processes, and the second group input of the second block 5 time intervals with the first group output of block 8 of model parameters, the second group output of which is connected to the second group input of block 9 of models of electricity consumption processes, and the third and even The third group outputs are connected respectively to the same inputs of block 9 of models of electricity consumption processes, the fifth input of which is connected to the first input of the first block of 4 time intervals and to the fourth input of the subtractor 7, the second and third inputs of which are connected respectively to the first and second outputs of the switch b and the first input of the subtracting unit 7 is connected to the output of the second block of 5 time slots, the output of the subtracting unit 7 is connected to the input of the display unit 3, the input of the first block of 4 time slots with union of a fifth output unit 8 of the model parameters.

The device works as follows.

The dispatcher on block 8 of the parameters of the modulus sets the properties of a specific model of electricity consumption during the time interval t; sets the value of Ng — the allowable amount of power consumption; sets the time moments of change, the nature of consumption of the model; interval and starts the first block of 4 time slots. Positive momentum from the first

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the output of the first block 4 time intervals sets the zero conditions on the drive 2, the integrator of the block 9 of the power consumption process models in the same way and sets the shift register cells of the subtraction block 7 to zero, thereby opening the keys of the subtracting block 7, a positive pulse determining interval duration, on the second output of the first block of 4 time intervals, the leading edge starts the waiting multivibrators in the second block of 5 time intervals and block 9 of process models n Since energy has been depleted, positive pulses from the output of the second block 5 time intervals trigger the switch 6, which for the time At connects the outputs of accumulator 2 and block 9 of the models of the process of electric power consumption to the second and third inputs of the subtraction unit 7. In this case, the output of the subtraction unit 7 forms a voltage proportional to the difference AE between the actual consumption of the object during the previous time intervals and the corresponding consumption according to the limit consumption model specified on unit 9 of the power consumption process models, i.e. E; -E where E, - - is really consumed, up to the i-th interval, energy; E, - is the corresponding power consumption specified on block 9 of the models of the process of electricity consumption. The formation of a consumption model is carried out by piecewise linear approximation implemented using a chain of waiting multivibrators. As a result of a set of values, a wide class of consumption patterns can be defined.

Know the value of AE; it is possible to determine the required change in the power AN, for the remaining part of the interval in order to prevent the power consumption from exceeding the limit value in the interval

AE;

AN, G,

J

where tj is the duration of the j-ro interval.

The value AN is displayed on the display unit 3. The availability of such information simplifies the action of the controller for the continuous regulation of power consumption.

Claims (1)

Invention Formula A device for monitoring the process of energy consumption, containing a power meter for electricity, a model parameter block, characterized in that, in order to improve the quality of dispatch control of power consumption, two time interval blocks are introduced in it, a block of power consumption process models, a drive, a subtraction block, a switch and a display unit, the output of the power meter connected to the first input of the accumulator, the setup input of which is connected to the first output of the first block is temporary x intervals and the output to the information input of the switch; the second output of the first block of time slots is connected to the first inputs of the second block of time slots and the block of power consumption process models, the outputs of which are connected to the second and third control inputs of the switch, respectively connected to the output of the second block of time intervals, the first and second outputs of the switch are connected to the second and third inputs of the subtracting unit, the installation input of the subtracting unit The key is connected to the first output of the first time block, the output of the subtractor is connected to the input of the display unit, the first group output of the model parameter block is connected to the second group input of the second time block, the second group output to the second group input of the power consumption process model block, the third and fourth outputs - by the corresponding inputs of the block of models of the process of electricity consumption, and the fifth output is connected to the input of the first block of time intervals; paid-input of subtractor unit is coupled to a fifth input of the power consumption of the process models.