CN214704943U

CN214704943U - Telecontrol communication unit of electric power system

Info

Publication number: CN214704943U
Application number: CN202120759617.7U
Authority: CN
Inventors: 宋旺
Original assignee: Hebei Beihengheneng Power Technology Co ltd
Current assignee: Hebei Beihengheneng Power Technology Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-12
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses an electric power system telemechanical communication unit, including the alternating current signal sample thief, the output of alternating current signal sample thief and analog to digital converter's input electric wire connection, analog to digital converter and electric quantity pulse counter's output all with the input electric wire connection of encoder, the encoder passes through channel and decoder electric wire connection, the output of decoder and main control CPU's input electric connection, main control CPU and remote control execution module and remote regulation execution module electric wire connection. The utility model discloses in, this electric power system telemechanical communication unit, through being provided with the encoder, can carry out channel coding through the encoder through the information of channel transmission, obtain the codeword for codeword inner structure has certain regularity and correlation, thereby makes the information that will convey have better interference killing feature.

Description

Telecontrol communication unit of electric power system

Technical Field

The utility model relates to a telemechanical communication technical field especially relates to an electric power system telemechanical communication unit.

Background

Telecontrol is the application of communication technology to monitor and control remotely operated equipment to achieve various functions such as remote measurement, remote signal, remote control and remote regulation. Telecontrol techniques play a vital role in speeding up the automation of electrical power systems. The functions realized by the telemechanical control technology of the power system mainly comprise functions of telemetering (YC), remote signaling (YX), remote control (YK) and remote regulation (YT), and are called four-remote functions for short. In order to ensure the reliable realization of various functions of the telecontrol of the power system, the specific telecontrol control of the power system is realized mainly by three parts, namely a data acquisition technology, a channel coding technology and a communication transmission technology, along with the large-scale reconstruction of urban networks and rural networks of the power system in China and the upgrade of large-scale industrial and mining enterprises, the requirement of a transformer substation on the automation degree is higher and higher, the requirement is that the operation condition of the whole power grid can be comprehensively monitored, the state of primary equipment is monitored, and the four-remote and historical record, report, accident analysis and the like are realized.

The existing power system telemechanical communication unit directly transmits the acquired information through a channel, and because various interferences exist in the channel, when the telemechanical information is transmitted in the channel, errors can occur due to the received interferences, so that the reliability of the motion information is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric power system telemechanical communication unit, through being provided with the encoder, can carry out channel coding through the encoder through the information of channel transmission, obtain the codeword for codeword inner structure has certain regularity and relevance, thereby makes the information that will convey have better interference killing feature.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a power system telecontrol communication unit comprises an alternating current signal sampler, wherein the output end of the alternating current signal sampler is connected with the input end of an analog-to-digital converter through a wire, the output ends of the analog-to-digital converter and an electric quantity pulse counter are connected with the input end of an encoder through a wire, the encoder is connected with a decoder through a channel through a wire, and the output end of the decoder is electrically connected with the input end of a main control CPU;

and the master control CPU is connected with the remote control execution module and the remote regulation execution module through wires.

As a further description of the above technical solution:

the alternating current signal sampler comprises a voltage transmitter, a current transmitter and a power transmitter, wherein the output ends of the voltage transmitter, the current transmitter and the power transmitter are electrically connected with the input end of the analog-to-digital converter.

As a further description of the above technical solution:

still include non-electric quantity signal acquisition terminal, non-electric quantity signal acquisition terminal includes temperature sensor, level sensor and smoke transducer, temperature sensor, level sensor and smoke transducer's output all with the input electric connection of encoder.

As a further description of the above technical solution:

the channel is a dedicated data channel in a railway communication network.

As a further description of the above technical solution:

the system also comprises a human-computer interaction interface which is electrically connected with the master control CPU.

The utility model provides an electric power system telemechanical communication unit. The method has the following beneficial effects:

(1) this electric power system telemechanical communication unit through being provided with the encoder, can carry out channel coding through the information of channel transmission through the encoder, obtains the sign indicating number for the sign indicating number inner structure has certain regularity and correlation, thereby makes the information that will convey have better interference killing feature.

(2) This electric power system telemechanical communication unit can realize the transmission to the information that alternating current signal sample thief, electric quantity pulse counter and non-electric quantity signal acquisition terminal gathered, compares in traditional electric power system telemechanical communication unit can only single completion alternating current signal sample thief's single transmission, the improvement its practicality of maximization and actual result of use.

Drawings

Fig. 1 is a block diagram of a telemechanical communication unit of an electric power system according to the present invention;

FIG. 2 is a block diagram of the AC signal sampler of the present invention;

fig. 3 is a block diagram of the non-electrical signal acquisition terminal of the present invention.

Illustration of the drawings:

1. an alternating current signal sampler; 11. a power transmitter; 12. a current transmitter; 13. a voltage transmitter; 2. an electric quantity pulse counter; 3. an analog-to-digital converter; 4. a non-electric quantity signal acquisition terminal; 41. a smoke sensor; 42. a water level sensor; 43. a temperature sensor; 5. an encoder; 6. a channel; 7. a decoder; 8. a main control CPU; 81. a human-computer interaction interface; 82. a remote control execution module; 83. and remotely adjusting the execution module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a telemechanical communication unit of an electric power system includes an ac signal sampler 1, an output end of the ac signal sampler 1 is connected with an input end of an analog-to-digital converter 3 through an electric wire, output ends of the analog-to-digital converter 3 and an electric quantity pulse counter 2 are both connected with an input end of an encoder 5 through an electric wire, the encoder 5 is connected with a decoder 7 through an electric wire through a channel 6, and an output end of the decoder 7 is electrically connected with an input end of a main control CPU 8;

the main control CPU8 is connected to the remote control execution module 82 and the remote adjustment execution module 83 by wires.

The alternating current signal sampler 1 comprises a voltage transmitter 13, a current transmitter 12 and a power transmitter 11, and the output ends of the voltage transmitter 13, the current transmitter 12 and the power transmitter 11 are all electrically connected with the input end of the analog-to-digital converter 3.

Still include non-electric quantity signal acquisition terminal 4, non-electric quantity signal acquisition terminal 4 includes temperature sensor 43, level sensor 42 and smoke transducer 41, and temperature sensor 43, level sensor 42 and smoke transducer 41's output all with encoder 5's input electric connection.

The channel 6 is a dedicated data channel in a railway communication network.

The system further comprises a human-computer interaction interface 81, wherein the human-computer interaction interface 81 is electrically connected with the main control CPU 8.

The working principle is as follows: when the telecontrol communication unit of the power system is used, voltage, current and power signals in the power system are collected through the alternating current signal sampler 1 and then transmitted to the analog-to-digital converter 3, the analog signals are converted into digital signals, the converted digital signals, the information collected by the electric quantity pulse counter 2 and the non-electric quantity signal collection terminal 4 are transmitted to the encoder 5 to be encoded, the encoded information is transmitted to the decoder 7 through the channel 6 to be decoded, the decoded information is transmitted to the main control CPU8, the main control CPU8 performs logic operation, communication protocol processing, communication data warehouse-in and warehouse-out processing, input scanning and output control on the collected information, then the collected information is transmitted to the human-computer interaction interface 81 to be displayed, and a remote command is sent through the remote control execution module 82 and the remote regulation execution module 83 through the main control CPU8 to perform remote control and strip execution.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The telecontrol communication unit of the power system is characterized by comprising an alternating current signal sampler (1), wherein the output end of the alternating current signal sampler (1) is in electric wire connection with the input end of an analog-to-digital converter (3), the output ends of the analog-to-digital converter (3) and an electric quantity pulse counter (2) are in electric wire connection with the input end of an encoder (5), the encoder (5) is in electric wire connection with a decoder (7) through a channel (6), and the output end of the decoder (7) is electrically connected with the input end of a main control CPU (8);

the main control CPU (8) is connected with the remote control execution module (82) and the remote regulation execution module (83) through wires.

2. The power system telecontrol communication unit according to claim 1, characterized in that the ac signal sampler (1) comprises a voltage transmitter (13), a current transmitter (12) and a power transmitter (11), and the output ends of the voltage transmitter (13), the current transmitter (12) and the power transmitter (11) are all electrically connected with the input end of the analog-to-digital converter (3).

3. The power system telecontrol communication unit according to claim 1, characterized in that it further comprises a non-electric-quantity signal acquisition terminal (4), wherein the non-electric-quantity signal acquisition terminal (4) comprises a temperature sensor (43), a water level sensor (42) and a smoke sensor (41), and the output ends of the temperature sensor (43), the water level sensor (42) and the smoke sensor (41) are electrically connected with the input end of the encoder (5).

4. A power system telemechanical communication unit according to claim 1, wherein said channel (6) is a dedicated data channel in a railway communication network.

5. The power system telecontrol communication unit of claim 1, further comprising a human-machine interface (81), wherein the human-machine interface (81) is electrically connected with the main control CPU (8).