SU858039A1 - Device for monitoring and registering electric power consumption - Google Patents

Description

The invention relates to devices, electricity metering and control of power consumption modes of large industrial consumers and can be used for commercial and intra-v factory billing for using electricity and adjusting power consumption at a given level.

A control device is known comprising an information receiving unit, an encoder, a combination of current information adder, a control unit, a unit for setting the maximum combined half-hour enterprise load value, a result register, distance, even registers, distribution cxet4 i, and a printing and display unit Dl.

The disadvantages of this device are the necessity of laying individual communication channels from each primary JQ sensor, which makes the device expensive and makes it difficult to use widely, storing long-term information in electronic registers.

I is cumbersome scheme of information circulation in the information processing unit, which reduces the speed of the device and its reliability, lack of flexibility of the device in relation to the rapid replacement of coefficients and signs, the inability to actively follow the schedule of the electrical loads during the maximum power system hours.

The closest to the proposed technical entity is a device for monitoring and metering energy consumption, which contains pulse sensors, a switch, an information control block, an address block, a factor and feature assignment block, a normalization block whose output is connected to the first input of the first information distributor, and outputs which is connected to the group by the input of the first counter, the first output of which is connected to the input of the first memory block, the registration block whose input is connected to the second output of the first counter whose input is connected to the first output of the control unit, the information input unit, the comparison unit, the display unit, the first input of which is connected to the third output of the first counter, amplifiers and input circuits 2. However, the known device is characterized by insufficient control accuracy of power consumption modes that it allows control of the power consumption in fixed half-hour intervals of the maximum of the power system. To equalize the schedule for energy system loads, it is necessary that consumers evenly consume electricity during peak hours and do not exceed the stated value at any current half-hour intervals. The introduction of the units of the tracking program master, tracking intervals and check digits allows for additional control within fixed half-hour intervals, which slightly improves the accuracy of the control. However, the device does not provide control over the power consumption at current half-hour intervals and does not allow for aligning the load schedule of the enterprise and the power system during the hours of maxima. In addition, when using fixed half-hour intervals, the display devices of the control supply system of the organization and the consumer may be divergent if the aae software devices that divide the time axis into control intervals turn out to be displaced relative to each other. This leads to ambiguity of control, which can cause a conflict in commercial payments for the use of electricity. Entire inventions are an increase in the accuracy of the device. The goal is achieved by the fact that the device for monitoring and accounting for power consumption, containing pulse sensors, a switch, an information control block, an address block, a factor and feature assignment block, a normalization block whose output is connected to the first input of the first information distributor, which are connected to a group of 94 inputs of the first counter, the first output of which is connected to the input of the first memory block, the registration unit, the input jcoToporo is connected to the second output of the first counter, whose input is connected to ne By the output of the control unit, the information input unit, the comparison unit and the display unit, the first input of which is connected to the third output of the first counter, encoders, matching unit, polling control unit, time sensor, second counter, second information distributor, second memory block, are entered, match blocks, adder and registers, the inputs of which are connected to the pulse sensors, and the outputs through the encoder are connected to the input group of the matching unit whose output is connected to the first input of the information control unit, the first output The sensor is connected to the input of the switch through the polling control unit, the outputs of which are connected to the input of the matching unit and to the first input of the address block, the output of which is connected to the input of the normalization unit and the second input of the first information distributor to the input of the control unit, the second output of which is connected to the second input of the information control block, the second output of the latter is connected to the second input of the address block, the third output of the control block the second counter is connected to the first inputs of the matching blocks and the second information distributor, the second input of which is connected to the even. to the output of the first counter, the output of the second information distributor is connected via the second memory unit to the second inputs of the matching blocks, whose outputs are connected to the inputs of the adder, the first output of which is connected to the second input of the display unit, the output of the information input unit and the second output of the adder to the third input of the display unit, the fourth input of the latter is connected to the fourth output of the control unit, the fifth output of which is connected to the control input of the second memory block. The drawing shows a block diagram of the device. The device comprises a subunit 1 of information collection, a subunit 2 of information transfer, a subunit 3 of information processing, a subunit A of registration and storage of information, and a subunit 5 of a dispatcher's advisor. These subunits, in turn, consist of sensors of 6 pulses,. registers 7, encoders 8, matching unit 9, polling control unit 10, switch 11, information control unit 12, address block 13, coefficient setting and sign unit 14, normalization unit 15, information distributor 16, first counter 17, registration block 18, the first memory block 19, the time sensor 20, the control block 21, the second counter 22, the second distributor 23, the second memory block 2A, the first match block 25, the second match block 26, the adder 27, the information input block 28, the comparison block 29, display unit 30.

The subunit 1 of information collection is intended to collect information from individual electricity meters installed at substations of an industrial installation.

The information transfer subunit 2 serves to transmit information from separate power substations to one device using common communication channels for individual groups of electricity meters.

The information processing subunit 3 is designed to determine the address of the original electricity meters, to bring the energy weight of the received pulses to the named units (distribution of this information in accordance with the characteristics of the original electricity meter (active, reactive, receive, return, etc.), as well as to control and co-ordination with other devices.

The sub-unit 4 for recording and storing information is used for the operative and long-term storage of information, as well as for documenting the results of accounting.

The subunit 5 of the dispatcher's adviser serves to control the power consumption modes and indicate the excess of the control parameters.

Electric meters with sensors 6 of them; ibcoB are located on electrical substations in groups and serve to record the electricity consumed by the enterprise, returned to the power system or given to subsubscribers.

The device works as follows.

Electric meters with sensors 6 pulses, after registering a certain portion of electricity, give out to registers 7 pulses, the energy weight of which is determined by the transformation ratios of current transformers and voltage of this connection. In registers 7, for each sensor there is a memory cell for one bit of information into which this pulse is entered.

A polling system for transmitting information with a substation to a control center is received in the device. The sampling frequency is chosen so as to avoid the loss of pulses at maximum speed of rotation of the electric meter disks. Each electrical substation, containing K meters, is connected to the control room by its communication line L, L ,, ..., ln, containing one communication channel. The matching of the communication lines with the inputs of the unit 12 and the switch I1 is carried out by matching transformers and amplifiers of the matching unit.

Claims (2)

1. USSR author's certificate 473100, cl. G 01 R 11/56, 1973. 2. USSR author's certificate for application No. 2398141 / 18-21, cl. G 01 R 11/56, 1976 (prototype).