KR101423559B1 - Intelligent deterioration monitoring vision system for electric distributing board - Google Patents

Abstract

The present invention relates to an intelligent deterioration monitoring vision system for an electric distributing board to prevent a problem generated by electric deterioration inside a closed electric distributing board. The present invention provides the intelligent deterioration monitoring vision system for the electric distributing board comprising; a temperature label tape which is attached to a heating unit inside the electric distributing board and visually displays a risk of the electric deterioration by changing the color according to a temperature change of the heating unit if the temperature reaches a predetermined temperature; a monitoring camera which photographs the state inside the electric distributing board and color change of the temperature label tape; a control board which supplies and prevents a power source of the monitoring camera; and an intelligent image server which controls the operation of the monitoring camera by controlling the control board through a wired and wireless communication line, receives an image recorded by the monitoring camera in real time, analyzes the image and gives the alarm according to the color change of the temperature label tape when an abnormal temperature is generated.

Description

TECHNICAL FIELD [0001] The present invention relates to an intelligent deterioration monitoring system for electric power distribution systems,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a maintenance technique for electric power facilities, and more particularly, to an intelligent deterioration monitoring video system for a switchboard for preventing a problem caused by electric deterioration in a power switchboard.

In the past, maintenance techniques for electric power facilities were checked off-line, but now reliability-based maintenance (RCM), which analyzes the characteristics of each facility in operation and its operating environment, The need for technology is emerging.

Electricity accidents in the 22.9kV switchboard of power facilities lead to power outage incidents, which not only inconveniences the users but also makes it difficult to recover in a short time when an accident occurs. In particular, in the case of industrial sites, it can lead to disruption, machine breakdown, or fire that can not be controlled.

In recent years, there is a growing probability that accidents will occur if operating conditions are poor due to aging, overloading, or insufficient periodical inspection due to aging of water distribution facilities.

In general, the main causes of abnormal temperature inside the switchgear are overload operation of the equipment, faulty contact of the contact parts of the bus bar and the breaker, and harmonic current.

Among the major causes for the abnormal temperature inside the switchboard, the equipment overload is caused by the joule heat generated by the current flowing in the conductor. Joule heat is the heat generated by electric energy transferred by electric current and part of which is transferred to heat. The temperature generated at this time is called temperature rise value by load current. The temperature rise is not a problem in the steady state where the heat and the heat are balanced, but when the overcurrent operation occurs due to an overload operation or an abnormal state of the circuit for some reason, the temperature rises sharply and eventually leads to an electric fire . The abnormal heat due to the load current can be expressed by the Joule thermal equation. The magnitude of the heat when the abnormal temperature occurs is proportional to the product of the square of the load current and the contact resistance.

The other main cause of the abnormal temperature inside the switchboard is the abnormal temperature rise due to overheating of the connection. If the connection state of the connection part to be fastened by the wire connection part, the crimping part, the soldering part or the bolt becomes loose during the use of electricity and the contact state becomes incomplete, special contact resistance Causes heat generation.

The cause of looseness is mainly caused by vibration, and the contact failure occurs even when corrosion occurs between dissimilar metals (such as corrosion on the contact surface of a screw and a wire) or when a plurality of wires are connected to one terminal. The contact resistance of the metal conductor is usually about 0.1 OMEGA or less, but the contact resistance is increased due to the reduction of the apparent contact area, the contact pressure, or the formation of the oxide film. When the contact resistance is increased, A secondary oxidation coating is formed at the same time as the heat generation, and the temperature of the contact portion becomes higher.

The other main cause of abnormal temperature inside the switchgear is the rise of abnormal temperature due to harmonics. Due to the recent increase in the use of power electronics applications, harmonics due to nonlinear characteristic loads are occurring considerably. A large amount of harmonics due to the use of office automation (OA) equipment and automation equipment are introduced into the power system, resulting in abnormal heat generation of the transformer, electric motor, and condenser, or malfunction of the control device. The abnormal heat generation of the power distribution equipment caused by the harmonics adversely affects the transformer, the circuit breaker, and the power cable, and especially acts as a main factor of overheating of the transformer.

As for the maintenance of the electric water supply system, the power supply control system monitors the status of the circuit by applying the power control. However, due to the limitation of the power control function in case of the electric deterioration, Electrician) check whether there is an abnormality through daily check and regular check.

The method of checking by the electric manager is mainly visual inspection, which checks the physical condition of the water distribution system to determine the abnormality. Physical diagnosis is carried out using visual, auditory, olfactory, or other five senses or measuring instruments. The items to be checked at this time are overheat, discoloration, presence of heat, presence of expansion and rust, loosening of terminals and screws, abnormal sound, .

However, even in the case of general buildings or apartment buildings, although the scale of water distribution facilities is gradually increasing, lack of inspectors due to insufficient number of inspectors is not done and even if it is judged that there is no abnormality through frequent inspections, And an electric fire may occur.

On the other hand, the thermal imaging camera, which is recently used for electric deterioration diagnosis, can diagnose deteriorated state and overcome limitations visually and can be effectively inspected. However, due to the cost problem and the characteristics of the device, There is a problem that accurate diagnosis is difficult, and this also has a limitation that it is not possible to diagnose electric deterioration at all times.

The water distribution facilities installed in the buildings are installed in the electric distribution board (Cubicle), which has the advantage of securing the space efficiency of water distribution facilities, preventing secondary disasters in case of accidents, and protecting people's lives. However, due to the characteristics of the switchboard, it is necessary to open and check the high-voltage door at all times, and in case of inspecting the live wire, it is vulnerable to the safety of the electric manager.

Deterioration diagnosis of high-voltage equipment is very important because most of electric accidents are likely to lead to an accident caused by abnormal temperature rise of electric equipment. Analysis of the types of electric accidents reveals that, even if the temperature rises due to electric deterioration, the electric facilities are not completely lost until the critical point is reached, and the electric power is supplied so that the manager can not detect them. It suddenly appears as a blackout or electric fire. In other words, if the time that the electric deterioration occurred can be confirmed in advance, it was possible to secure enough time to cope with the accident, but it could lead to an accident.

Especially, in case of transformer accident which is a high-voltage equipment, the transformer is operated until the transformer coil is short-circuited due to the overload of the transformer.

Therefore, an object of the present invention to solve the above-mentioned problems is to provide an intelligent deterioration monitoring video system for a switchgear capable of promptly responding to an emergency situation in the event of an electrical equipment abnormality through a deterioration monitoring and diagnosis method having reliability, practicality and economy have.

Another object of the present invention is to provide a method and apparatus for monitoring and diagnosing real-time deterioration more accurately and faithfully than a visual inspection by an electric manager, thereby eliminating the heavy work of the inspectors And to provide an intelligent deterioration monitoring video system for a switchboard.

According to an aspect of the present invention, there is provided an intelligent deterioration monitoring video system for a switchgear, which is attached to a heating unit inside a switchgear and changes color when the temperature of the heating unit reaches a set temperature, A temperature label tape that visually displays the risk of a hazard; A surveillance camera for capturing an image to monitor a color change of the temperature label tape and an internal state of the switchboard; A control board for supplying and blocking the power of the surveillance camera; And controlling the operation of the surveillance camera by controlling the control board through a wired / wireless communication line, receiving an image photographed by the surveillance camera in real time, analyzing the received image, And an intelligent image server for alerting when an abnormal temperature occurs.

At this time, the control board of the intelligent deterioration monitoring video system for a switchgear according to the present invention includes a wired / wireless communication unit for receiving a control signal from the intelligent video server, And the power is supplied or cut off.

The intelligent video server of the intelligent deterioration monitoring video system according to the present invention may further include an input unit for inputting commands and data for controlling the operation of the control board so that the manager can drive the surveillance camera at a desired time, A storage unit for storing an image taken by the surveillance camera received from the control board, a control unit for transmitting a control signal to the control board via the wired / wireless communication line, and receiving an image taken by the surveillance camera from the control board A controller for recognizing and distinguishing colors from the image received from the control board and outputting alarms corresponding to the ambient, warning, and danger levels corresponding to the color change of the identified temperature label tape; An audio output unit for outputting the alarm as an audible signal in accordance with the control; And a display unit for displaying the alarm on the screen.

Further, in the intelligent deterioration monitoring video system for a switchboard according to the present invention, the control unit of the intelligent video server may control the wired / wireless communication unit so that when an abnormal temperature is generated according to the color change of the temperature label tape, And an image, and further sends an alarm message to at least one of the images.

The present invention is advantageous in that an accident can be prevented in advance by quickly responding to an emergency situation when an electrical equipment abnormality occurs through a deterioration monitoring and diagnosis method having reliability, practicality and economy.

Further, the present invention realizes more accurate and faithful real-time deterioration monitoring and diagnosis than the visual inspection by the electric manager, and thus the advantage of eliminating the heavy work of the inspecting personnel, .

Accordingly, the present invention has the effect of providing psychological and material advantages to both the electric provider and the user in terms of reliability, practicality and economy.

1 is a conceptual diagram of an intelligent deterioration monitoring video system for a switchboard according to the present invention;
2 is a configuration diagram of an intelligent deterioration monitoring video system for a switchboard according to the present invention,
3 is an internal block diagram of an intelligent video server of an intelligent deterioration monitoring video system for a switchboard according to the present invention;
4 is an exemplary view of a camera control screen of an intelligent deterioration monitoring video system for a switchboard according to the present invention,
5 is a view illustrating an example of a temperature label tape setting screen of the intelligent deterioration monitoring video system for a switchboard according to the present invention.
6 is a view showing an example of a real-time monitoring screen of an intelligent deterioration monitoring video system for a switchboard according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. It should be noted that the same configurations of the drawings denote the same reference numerals as possible whenever possible. It is to be understood that the present invention is not limited to the specific embodiments and that all changes, modifications, and alterations included within the spirit and scope of the present invention are intended to be illustrative, It is to be understood that the invention includes equivalents and alternatives. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in the description is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

The water distribution facility shall comply with the maximum allowable temperature table as per KSC 4004-80, depending on the equipment and type of insulation. The maximum permissible temperature for each device is slightly different from the maximum allowable temperature And it can be confirmed that electric deterioration occurs when the electric equipment reaches this temperature. Table 1 below shows the areas where problems occur due to internal deterioration in the switchboard.

Therefore, a variety of diagnostic techniques for preventing deterioration have been developed and applied to the field, and the pros and cons of the currently applied deterioration diagnosis methods are analyzed as shown in Table 2 below.

First, a technology using a temperature sensing odor sensor senses an abnormal state occurring when an abnormality occurs in the interior of a switchboard or an electric device, and detects an abnormal state by sensing an odor inside the sensor. Is a method of installing a temperature sensor inside the switchgear and detecting when the temperature value measured through the temperature sensing unit is determined to be a dangerous level such as a temperature generated by a general fire.

Next, the monitoring apparatus using the frequency information monitors the frequency of the current passing through the wire and senses the corresponding temperature information to detect a fire occurrence point or a point where a fire is expected. The thermal resistance type temperature sensor An electrothermal resistance type temperature sensor is installed for the area where the heat is expected, and an abnormal heat phenomenon is notified by a warning sound.

A method using a gas sensor is a method of sensing electric heat generation by using a change in electric conductivity occurring when a gas is brought into contact with a ceramic semiconductor sensor. In a method using a temperature label, a coloring tape, And a method of detecting an abnormal heat phenomenon by observing the presence or absence of discoloration. In the method using a thermal camera, a change in a temperature of a heat generation site is analyzed by a thermal image camera to detect an abnormal heat generation.

As shown in Table 2, the deterioration detection and diagnosis methods currently applied are methods for detecting temperature change, and there are advantages and disadvantages of each method. Considering reliability, practicality, and economical efficiency of the methods shown in Table 2 Temperature label tape meets all three.

However, the biggest problem of the temperature label tape is that the color change of the tape due to the temperature change is always monitored. At present, these inspections are performed by visual inspection. Therefore, if the inspections can not be carried out from time to time, there arises a problem that the electrical equipments can not cope with emergency situations properly.

In order to solve such a problem, the switchboard with intelligent deterioration monitoring system according to the present invention checks the color change of the temperature label tape by using a closed circuit (CCTV) installed inside the power and control panel, Can be installed in the video server to monitor the temperature change in real time and to generate an alarm when the set temperature is exceeded visually and audibly and to promptly notify the manager's wireless terminal with text and / .

First, FIG. 1 is a conceptual diagram of an intelligent deterioration monitoring video system for a switchboard according to the present invention, in which a temperature label tape responsive to temperature is attached to an easel portion or terminal inside a switchgear. The temperature label tape is a color change tape that is discolored by the temperature rise. The temperature label tape is adhered to the easiness section bar or the terminal inside the distribution panel in advance and the discoloration is visually recognized to detect the abnormal heat generation phenomenon. The color change according to the temperature change of the temperature label tape is collected by capturing an image with a surveillance camera installed inside the switchboard and transmitted to an intelligent image server through an image amplifier, and the camera is controlled by an intelligent image server through a control board.

In addition, the color change of the temperature label tape is automatically analyzed by the intelligent image server and used as data for judging that the temperature change occurred inside the switchboard. When the temperature change is detected, the intelligent image server transmits the user's wireless communication It is quickly notified to the terminal and an accident such as fire due to deterioration is prevented in advance.

FIG. 2 is a block diagram of an intelligent deterioration monitoring video system for a switchboard according to the present invention. In one intelligent video server 140, a temperature label tape 110, a surveillance camera 120 and a control board 130 are provided as one set. The intelligent video server 140 analyzes the data received from a plurality of switchboards to be monitored through the wired / wireless communication network 200 and notifies the client terminal 150 of the result of the analysis to the administrator or the user.

The control board 130 transmits the image data photographed from the surveillance camera 120 to the intelligent video server 140 through a wireless communication network or a wired communication line. The intelligent video server 140 transmits surveillance information to the customer terminal 150 through a wireless communication network, a data communication network, or the Internet. The customer terminal 150 may be a wireless communication terminal such as a smart phone or a notebook computer, Or may be the same wired communication terminal. Alternatively, the image captured by the surveillance camera 120 may be amplified by an image amplifier (not shown) without using the control board 130, and may be directly transmitted to the intelligent video server 140. The control board 130 and the image amplifier may further include a wired or wireless communication unit for wired / wireless communication with the intelligent video server 140.

First, the temperature label tape 110 is attached to a heat generating part in the vicinity of a bus bar or a terminal terminal where there is a high risk of electric deterioration in the interior of the switchgear, When the temperature rises due to deterioration, the color changes to the set temperature, thereby visually indicating the risk of electric deterioration.

The temperature label tape 110 is a temperature label tape for temperature control and recording that notifies the temperature rise of the electric equipment in which a high temperature is generated by a change in color. The temperature label tape (110) installed in the switchgear panel is provided with three kinds of irreversible properties to display three temperature changes of the temperature and to classify them into caution, warning and danger level.

The temperature label tape 110 is manufactured in the same shape as a general adhesive tape, so that it can be easily installed and removed by anyone. The temperature change is measured in units of 10 ° C. As an example, the temperature of the caution is 50 캜, the warning temperature is 60 캜, and the dangerous temperature is 70 캜. The temperature is selected based on the booth bar and the defective part of the switchboard, and the temperature measurement range and temperature can be changed if necessary. The temperature label tape (110) is suitable for safety diagnosis management of the electric equipment inside the switchgear by sensing the danger due to the temperature rise due to the change in color. Temperature labeling is attached to the surface of the object so that the temperature error range is about 2 ℃ This is very good.

The surveillance camera 120 may be provided in the form of a surveillance CCTV for monitoring the color change of the temperature label tape 110 and the internal state of the switchgear. Can be selected by changing the type of the lens. Generally, it is preferable that the reference of the camera to be applied is an angle of view of 80 °, a resolution of 400,000 pixels, an operation control of an LED providing a light source for capturing a color image by a camera, and an alarm interface for alarm output.

The control board 130 may be implemented as a serial relay type board that simply turns on / off the surveillance camera 120. The surveillance camera 120, which monitors the inside of the surveillance system 120, Time can be set and monitored. The control board 130 controls the LED operation of the surveillance camera 120 according to the control of the surveillance program driven by the intelligent video server 140 at the remote location so as to set the internal state of the switchboard to a desired time by the administrator. For this, the control board 130 includes a wired / wireless communication unit for communicating with the intelligent video server 140 at a remote location. In particular, the control board 130 can control the 8CH relay control, the multi-channel relay control, and the power supply of the surveillance camera 120 and the relay power, so that the plurality of surveillance cameras 120 can be controlled from one board.

1, some functions of the control board 130 may be implemented in the surveillance camera 120 so that images captured by the surveillance camera 120 are transmitted to the intelligent video server 140 The surveillance camera 120 may be directly transmitted to the intelligent video server 140 without passing through the control board 130. [

The intelligent video server 140 analyzes the real time video of the surveillance camera 120 received through the surveillance camera 120 or the control board 130 to determine whether there is an abnormality or not, And stores an image of an abnormal occurrence situation. Hereinafter, the intelligent video server 140 will be described in more detail with reference to FIG.

3, the intelligent video server 140 includes a control unit 141, a wired / wireless communication unit 142, and a control unit 141. The control unit 141, the wired / wireless communication unit 142, An input unit 143, a storage unit 144, a display unit 145, and an audio output unit 146.

The control unit 141 recognizes and distinguishes the RGB colors from the image received from the control board 130 and outputs a voice notification corresponding to the surrounding, warning, and dangerous levels in response to the color change of the separated temperature label tape 110 And outputs it through the output unit 146. The control unit 141 controls the wired / wireless communication unit 142 to transmit information on the occurrence of an abnormal situation to the administrator smart phone or the PC through the ISP 210 (Internet service provider) in the form of characters, images, or e-mail.

The input unit 143 inputs commands and data for controlling the operation of the control board 130 so that the manager can turn on / off the surveillance camera 120 at a desired time. 4 is a view illustrating an example of a camera control screen of the intelligent deterioration monitoring video system for a switchboard according to the present invention and shows a control screen of a surveillance camera 120 provided to an administrator through the display unit 145 in the intelligent video server 140 will be. As shown in FIG. 4, the control unit 141 provides a screen to the administrator through the display unit 145 for finely controlling on / off and operation time for each of the plurality of surveillance cameras 120.

When the administrator drives the monitoring program through the input unit 143, the control unit 141 controls the wired / wireless communication unit 142 to set the communication line, and the individual on / off time setting data of the manager for the monitoring camera 120 And controls each surveillance camera 120 through the control board 130 accordingly. Accordingly, the administrator can set all of the plurality of surveillance cameras 120 controlled by the control unit 141 to the same operation state or set the operation state individually, through the monitoring program.

5, the control unit 141 may set and remove the area of the temperature label tape 110 to be monitored by the surveillance camera 120 through the control board 130. As shown in FIG. FIG. 5 is a view showing an example of a temperature label tape setting screen of the intelligent deterioration monitoring video system for a switchboard according to the present invention.

The command or data input from the input unit 143 is transmitted to the control board 130 through the wired / wireless communication unit 142 under the control of the controller 141. In addition, the control unit 141 controls the control board 130 to record an image photographed by the surveillance camera 120 according to an input command of an administrator, and if necessary, And controls to continue recording.

FIG. 6 is a view showing an example of a real-time monitoring screen of the intelligent deterioration monitoring video system for a switchboard according to the present invention. The intelligent deterioration monitoring video system for a switchboard according to the present invention can be monitored in real- The alarm is visually and / or automatically displayed on the alarm interface, which is additionally attached to the surveillance camera 120 through the control board 130 installed in the intelligent video server 140, It can be output audibly.

In addition, the intelligent deterioration monitoring video system for a switchgear according to the present invention preferably pops up a corresponding surveillance area when an alert is generated through the monitoring screen of FIG. 6, thereby allowing the administrator to more easily identify the abnormality occurrence area.

As described above, the intelligent deterioration monitoring video system for a switchgear according to the present invention is capable of monitoring and alerting to quickly respond to an emergency situation in the event of an electrical equipment malfunction through a deterioration monitoring and diagnosis method having reliability, practicality and economy .

In addition, the intelligent deterioration monitoring video system for a switchboard according to the present invention can perform real-time deterioration monitoring and diagnosis more accurately and faithfully than a visual inspection by an electric manager.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

Claims (4)

In the switchboard,
A temperature label tape attached to a heating portion inside the switchgear and visually indicating the risk of electric deterioration when the temperature changes according to a temperature change of the heating portion to change color; A surveillance camera for capturing an image to monitor a color change of the temperature label tape and an internal state of the switchboard; A control board for supplying and blocking the power of the surveillance camera; And controlling the operation of the surveillance camera by controlling the control board through a wired / wireless communication line, receiving an image photographed by the surveillance camera in real time, analyzing the received image, An intelligent video server that alerts when an abnormal temperature occurs;
Wherein the control board comprises a wired / wireless communication unit for receiving a control signal from the intelligent video server, the power supply for the surveillance camera being supplied or blocked for a predetermined time under the control of the intelligent video server;
The intelligent video server includes an input unit for inputting commands and data for controlling the operation of the control board so that the administrator can drive the monitoring camera at a desired time, A wired / wireless communication unit that transmits a control signal to the control board via the wired / wireless communication line and receives an image taken by the monitoring camera from the control board; A control unit for outputting an alarm corresponding to the ambient, warning, and dangerous levels in accordance with the color change of the temperature label tape which is recognized and distinguished and distinguished from each other and outputting the alarm as an audible signal under the control of the control unit; And a display unit for displaying the alarm on the screen under the control of the control unit Switchgear intelligent imaging system for degradation monitoring according to claim.
delete delete The apparatus of claim 1,
And the wired / wireless communication unit controls the wired / wireless communication unit to inform the administrator terminal of at least one of an image and an image when an abnormal temperature occurs according to a color change of the temperature label tape.

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