CN210468895U

CN210468895U - Feeder terminal with image processing and comparing functions

Info

Publication number: CN210468895U
Application number: CN201921274602.0U
Authority: CN
Inventors: 刘小平; 张洪波; 李圣
Original assignee: Shandong Electrical Engineering & Equipment Group Xinneng Technology Co ltd
Current assignee: Shandong Electrical Engineering & Equipment Group Xinneng Technology Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-05
Anticipated expiration: 2029-08-07

Abstract

The utility model relates to a feeder terminal who possesses image processing and compare function, include: the device comprises a CPU module, a data storage module, a communication module, an analog input module, a switching value I/O module and a power supply module, wherein the data storage module is connected with the CPU module to realize bidirectional data communication, and the power supply module is respectively and electrically connected with the CPU module and the communication module to supply power to the CPU module and the communication module; the analog input module and the switching value I/O module are respectively and electrically connected with the CPU module and are used for measuring the electric quantity of a circuit and controlling the opening and closing actions of the column switch. The utility model monitors the running state of the column switch and the line in real time, and improves the automation degree of the distribution network system; under the condition that a line or a switch has a fault, operation and maintenance personnel can go to the site for treatment in time, so that the accident is prevented from being expanded; under the normal operating condition of the line and the switch, the frequency of checking the line in a manual site is reduced, and the waste of manpower and material resources is reduced.

Description

Feeder terminal with image processing and comparing functions

Technical Field

The utility model relates to a distribution automation technical field, concretely relates to possesses image processing and compares feeder terminal of function.

Background

The feeder terminal is also called FTU, has functions of remote signaling, remote measurement, remote control, fault detection and the like, communicates with a power distribution main station at the upper stage, provides operation conditions and various parameters of a power distribution system, including on-off state, current, voltage, power and the like, and parameters when a circuit fails, executes a command issued by the power distribution main station, adjusts and opens and closes a switch and controls energy storage of power distribution switch equipment, and realizes functions of fault positioning, fault isolation, quick recovery power supply of a non-fault area and the like.

With the rapid development of chip technology, computer networks and communication, the research and development design of feeder terminals is relatively mature, and various manufacturers fully utilize advanced technology to develop feeder terminal products meeting the requirement of distribution network automation, and the reliability of the feeder terminal products is more and more stable. However, rural and urban power distribution networks in China are distributed dispersedly, the distribution amount is large, column switches and feeder terminals are mostly column equipment mounted on high-voltage telegraph poles, the mounting height is high, time and labor are wasted in field maintenance, and great potential safety hazards exist. The national network operation and inspection department needs to carry out activities such as spring and autumn inspection with huge engineering quantity every year, which causes waste of manpower and material resources.

Disclosure of Invention

For solving the not enough of prior art existence, the utility model discloses a take image processing and compare feeder terminal of function, the utility model has the advantages of degree of automation is high, the integrated level is high, fortune dimension work load is little.

In order to achieve the above purpose, the specific scheme of the utility model is as follows:

a feeder terminal with image processing and comparing functions comprises: the device comprises a CPU module with image processing and comparing functions, a data storage module, a communication module, an analog input module, a switching value I/O module and a power supply module, wherein the data storage module is connected with the CPU module to realize bidirectional data communication, and the power supply module is respectively and electrically connected with the CPU module and the communication module to supply power to the CPU module and the communication module; the analog input module and the switching value I/O module are respectively and electrically connected with the CPU module and are used for measuring the electric quantity of a circuit and controlling the opening and closing actions of the on-column switch; the communication module is electrically connected with the CPU module, and the CPU module sends a fault signal to the power distribution main station through the communication module.

The CPU module adopts a DSP-based hardware development platform, and is provided with a corresponding image analysis algorithm in software, and is used for processing digital signals of images stored in the data storage module in real time and comparing the digital signals with an image standard value under a preset normal operation condition. When the difference exceeds the preset difference, the on-column switch and the circuit are determined to have fault conditions, such as the situations that the insulator has excessive dust deposition, the circuit has short-circuit fault, the on-column switch is not in place and the like, and the CPU module sends a fault signal to the power distribution main station through the communication module. The DSP chip selects a high-speed digital processing chip, and factors such as an external bus structure of the chip, an on-chip memory structure, a DMA function, a serial communication port, inter-chip communication capacity and the like are considered in the aspect of hardware. The CPU module also needs to perform data acquisition, calculation, and processing on the switching value I/O module and the analog input module, and transmit data information to the power distribution master station, so as to meet the functional requirements of the whole system.

The data storage module is connected with the CPU module and is used as an expansion external memory of the internal memory of the DSP chip, and the data storage module is divided into two areas: partition one and partition two. The first partition is used for storing image information data acquired by the digital camera when the circuit normally operates, and the second partition is used for storing image information data acquired by the digital camera when the circuit operates in real time. The CPU performs digital signal operation and processing on the image information of the two partitions of the data storage module, and compares the processing results.

The communication module is connected with the CPU module, and a wireless communication mode is adopted, so that when the difference value between the real-time operation image data and the preset standard value exceeds the set difference value, the CPU module sends a fault signal to the power distribution main station through the communication module, and a person can timely handle abnormal conditions on site.

The analog input module is connected with the CPU module and used for measuring voltage, current, frequency, active power, reactive power and other electric quantities of the line, and the fault section of the line is judged through calculation and comparison.

The switching value I/O module is connected with the CPU module and consists of a plurality of paths of digital value input and output channels with photoelectric isolation, can effectively control the opening and closing actions of the column switch, monitors the position state change of the column switch in real time, starts an energy storage process, sends a fault signal and the like.

The power supply module is connected with the CPU module, consists of a plurality of paths of AC/DC conversion modules, can simultaneously provide a direct current working power supply for the communication module, the on-column switch on-off switch, the feeder terminal operation and the like, and needs to be electrically isolated in power supply output and input.

The digital camera is installed on the pole where the pole top switch is located as auxiliary equipment and used in cooperation with the feeder terminal, so that the real-time running conditions of the pole top switch and the incoming and outgoing line lines are monitored. The digital camera adopts digital signals to acquire image information, is connected with the data storage module and the CPU module of the feeder terminal through the RJ interface network cable, receives an image demand signal instruction sent by the CPU module and acquires images. And the acquired image data is transmitted to a data storage module of the feeder terminal.

The utility model has the advantages that:

1. the operation states of the column switch and the line are monitored in real time, and the automation degree of the distribution network system is improved.

2. Under the condition that a line or a switch has a fault, operation and maintenance personnel can timely go to the site for treatment, and accident enlargement is avoided.

3. Under the normal operating condition of the line and the switch, the frequency of checking the line in a manual site is reduced, and the waste of manpower and material resources is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.

Fig. 1 is a system structure diagram of a feeder terminal according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, it is a system structure diagram of a feeder terminal according to an embodiment of the present invention. A feeder terminal with image processing and comparison functions has a system structure which is divided into 6 parts: the device comprises a CPU module, a data storage module, a communication module, an analog input module, a switching value I/O module and a power supply module. The data storage module is connected with the CPU module to realize bidirectional data communication, and the power supply module is respectively electrically connected with the CPU module and the communication module to supply power to the CPU module and the communication module; the analog input module and the switching value I/O module are respectively and electrically connected with the CPU module and are used for measuring the electric quantity of a circuit and controlling the opening and closing actions of the on-column switch; the communication module is electrically connected with the CPU module, and the CPU module sends a fault signal to the power distribution main station through the communication module.

As shown in fig. 2, it is a work flow chart of the control method according to the embodiment of the present invention. The fault monitoring method of the feeder terminal with the image processing and comparing functions comprises the following steps:

the digital cameras are installed on the electric poles corresponding to the column switches, the image information of the column switches and the overhead lines under the normal operation condition is collected by using the internal AC/DC modules, and the data is transmitted to a data storage module zone I of the feeder line terminal through the RJ interface network cable to serve as a standard value;

the power distribution main station sends an image demand signal to a CPU module of the feeder terminal;

after receiving an image demand signal of a power distribution master station, the CPU module issues an instruction to the digital camera in a communication mode, and image information acquisition is carried out on the real-time running state of the on-column switch and the line;

after receiving an image acquisition instruction sent by the CPU module, the digital camera acquires images of the on-column switch and the real-time running state of the line, and transmits acquisition information to a second feeder terminal data storage module partition through the communication module in real time;

and the feeder terminal CPU module extracts the real-time image information of the partition II of the data storage module, processes the information and compares the information with the standard value in the partition I. And when the difference value of the two exceeds the preset standard difference value, the CPU module sends a fault signal to the power distribution main station through the communication module.

Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. Feeder terminal that possesses image processing and comparison function, its characterized in that includes: the device comprises a CPU module with image processing and comparing functions, a data storage module, a communication module, an analog input module, a switching value I/O module and a power supply module, wherein the data storage module is connected with the CPU module to realize bidirectional data communication, and the power supply module is respectively and electrically connected with the CPU module and the communication module to supply power to the CPU module and the communication module; the analog input module and the switching value I/O module are respectively and electrically connected with the CPU module and are used for measuring the electric quantity of a circuit and controlling the opening and closing actions of the on-column switch; the communication module is electrically connected with the CPU module, and the CPU module sends a fault signal to the power distribution main station through the communication module.

2. The feeder terminal as claimed in claim 1, wherein the CPU module employs a hardware development platform based on a DSP chip, and a corresponding image analysis algorithm is provided in software for real-time processing of digital signals of images stored in the data storage module, comparing the digital signals with an image standard value under a preset normal operating condition, and transmitting a fault signal to the power distribution main station through the communication module when a fault occurs; the CPU module also collects, calculates and processes data of the switching value I/O module and the analog input module, and transmits data information to the power distribution main station.

3. The feeder terminal of claim 2, wherein the DSP chip is selected from a high speed digital processing chip, hardware considerations regarding the external bus structure of the chip, on-chip memory structures, DMA functions, serial communication ports, and inter-chip communication capabilities.

4. A feeder terminal as claimed in any one of claims 1 to 3, wherein the data storage module, as an external memory, is divided into two regions: a first partition and a second partition; the first partition is used for storing image information data acquired by the digital camera when the circuit normally operates, and the second partition is used for storing image information data acquired by the digital camera when the circuit operates in real time.

5. A feeder terminal as claimed in any one of claims 1 to 3, wherein the communications module is adapted to communicate wirelessly.

6. The feeder terminal as claimed in any one of claims 1 to 3, wherein the analog input module is used to measure the voltage, current, frequency and active and reactive power of the line, and determine the fault section of the line by calculation and comparison;

the switching value I/O module is composed of a plurality of paths of digital value input and output channels with photoelectric isolation, controls the opening and closing action of the column switch, monitors the position state change of the column switch in real time, starts the energy storage process and sends out fault signals.

7. A feeder terminal as claimed in any one of claims 1 to 3 wherein the power supply module comprises a plurality of AC/DC conversion modules, and is operable to provide DC operating power for the communications module, the pole top switch, and the feeder terminal.

8. A feeder terminal as claimed in any one of claims 1 to 3, wherein a digital camera is mounted as an auxiliary device on the pole on which the pole top switch is located for use in conjunction with the feeder terminal to monitor the real time operation of the pole top switch and the incoming and outgoing lines.