KR100932187B1 - Apparatus and method for monitering error of distributing board by detecting a partial discharge of high-voltage electicity furniture - Google Patents

Abstract

PURPOSE: An apparatus and a method for monitoring an error of a distribution board by detecting connection part degradation of a high voltage electric facility are provided to prevent power failure and fire accident due to connection error by managing connection error state of a line. CONSTITUTION: A monitoring unit(310) is installed in a connection part among high voltage systematic power devices of a distributing board. The monitoring unit accumulates electricity by using a magnetic field in the line. The monitoring unit monitors connection error state by driving a device using a micro power source. A data acquisition unit(320) collects data from the monitoring unit wirelessly. An embedded server(330) receives data from the data acquisition unit. The embedded server comprehensively manages the data. A main server(350) receives the comprehensively managed data through an internet(340). A monitoring management apparatus(370) manages the data stored in the main server remotely using a relay(360).

Description

Switchgear failure monitoring device and method by detecting degradation of connection of high-voltage electric facilities {Apparatus and method for Monitering error of distributing board by detecting a partial discharge of high-voltage electicity furniture}

The present invention relates to a device for detecting deterioration and poor connection in the connection to the switchgear and high-voltage electrical facilities used in buildings and industrial factories, in particular high voltage electricity to prevent the power failure and fire accidents due to poor connection It relates to a switchgear failure monitoring apparatus and method by detecting the deterioration of the connection of the facility.

In general, in a workplace of a factory, a school, a building, or the like, equipment that performs a predetermined work using electric power includes a main body that supplies power, a work machine that receives power from the main body, and performs a work. It consists of a cable that transmits power up to.

In most workplaces, the main body and work machine are relatively remotely isolated rather than adjacent. There is also a central control station that detects the status of power consumption in your workplace, which monitors the risk of fire due to overloading the workplace and informs the operator of the workplace where the monitoring results are located. Measures can be taken to prevent fires.

As such, in order to monitor electric power, there should always be a worker who is in control of the monitoring results of the central control station in all workplaces, which causes labor costs to rise, and power loss as well as a great loss of power if the worker does not take proper control action. There was always a risk that a disaster could often occur.

In general, in order to be supplied with electricity of a special high voltage to transform the voltage to an appropriate voltage for its use, a switchgear or a switchgear (hereinafter referred to as a "switchgear") is used.

At this time, the switchgear used is continuous with the switchgear body, which is equipped with an open and close switchgear door for limiting direct contact with the outside and considering the safety of electric shock and fire in the process of use, and checking or maintenance. In consideration of the reliability of the uniform supply voltage, the installation of various protective equipment such as a circuit breaker or an arrester has become an essential equipment requirement.

1 is a side view schematically showing a general switchgear.

As shown in FIG. 1, the conventional switchboard 100 includes first to fourth space parts 111 to 114 divided into upper, lower, and front and rear spaces, and doors 115 and 116 formed at both front and rear sides thereof. Switchgear body 110 having a, the failure section automatic switchgear 120 formed in the first space portion 111, the transformer 130 formed in the second space portion 112, and the third space portion 113 of the A power cut-off control unit 140 having a parking breaker 141 and a wiring breaker 142 formed on the front surface, and a power fuse 150 and an arrester 160 formed on an upper portion of the fourth space 114. Instrument transformer 170 is configured.

The first and second space parts 111 and 112 and the third space part 113 are divided into partition walls 117 having a predetermined thickness so as to distinguish between the high pressure side and the low pressure side. It is formed to reduce noise.

In addition, the input side terminal of the failure section automatic switchgear 120 through the insulating connecting member 190 and the fixing member 191 formed in the upper portion of the switchboard body 110 from the inlet 110a formed at the front lower side of the switchboard body 110. Connected to

In addition, a connection cable is connected to the output terminal of the failure section automatic switch 120, and the high voltage electricity is supplied to the high voltage side of the transformer 130 through the lightning arrester 160, the current-limit power fuse 150, and the transformer transformer current transformer. It is installed to be authorized.

In addition, the flexible bus bar 131 is installed on the low pressure side of the transformer 130 so as to be connected to the parking short circuit 140 to drop the special high voltage electricity applied from the KEPCO side.

However, as mentioned above, the distribution and high voltage electrical facilities used in buildings and industrial factories, etc., as the amount of electricity is rapidly increased, the fire and power failure accidents due to deterioration and poor connection to the connection portion is increasing.

In other words, economic losses due to power failures due to poor connection and deterioration are also increasing, and even though these accidents can be prevented in advance, power failures increase due to the absence of such measuring devices.

On the other hand, in order to prevent an electrostatic accident as described above, the conventional infrared type connection part temperature monitoring device was used. In the same bus bar, infrared wavelength is diffracted and measurement error occurs, so that accurate temperature detection is impossible and Because it is impossible to measure in the refracted place and because it is a high voltage part, there is a risk of measurement, the price is expensive, and it is not suitable for measuring a large number of places continuously.

The present invention is to solve the problems as described above by managing the abnormal state of the connection flow flowing in the line switchboard fault monitoring device by detecting the degradation of the connection of the high-voltage electrical facilities to prevent the power failure and fire accidents due to the connection failure in advance The purpose is to provide a method.

In addition, the present invention is to detect the connection degradation of the high-voltage electrical facilities to remotely manage the connection failure through the wireless transmission remote management to the semi-permanent line magnetic field induction power supply that does not need wired power supply for measurement analysis of the connection failure of the high-voltage connection to be measured It is an object of the present invention to provide a switchgear failure monitoring apparatus and method.

In addition, an object of the present invention is to provide a switchgear failure monitoring apparatus and method by detecting the deterioration of the connection of the high-voltage electrical installation to prevent the fire in advance by installing a gas sensor in the switchgear to detect the gas emitted from the insulating material. .

In addition, the present invention is to install the humidity sensor in the switchgear so as to constantly monitor the short circuit due to the condensation phenomenon due to the temperature difference of the winter season or the insulation degradation due to the high humidity of the summer season to detect the deterioration of the connection of the high-voltage electrical facility to protect the insulation equipment. It is an object of the present invention to provide a switchgear failure monitoring apparatus and method.

In order to achieve the above object, the switchgear failure monitoring device by detecting the deterioration of the connection of the high-voltage electric facility according to the present invention has a housing having an inner space, and a power device for controlling electricity supplied to and installed in the inner space of the housing. And a high voltage supply system power connection failure monitoring device of a switchgear including a bus bar for electrically connecting an external power supply source and the power device, wherein the transformer changes the value of alternating voltage or current by using electromagnetic induction. And a bus bar connected to one side of the transformer and connected to an external device, and a wireless thermosensitive sensor module installed on a portion of the bus bar to wirelessly detect a connection failure using a magnetic field. It is characterized by.

In addition, the switchgear failure monitoring method by detecting the deterioration of the connection portion of the high-voltage electrical facilities according to the present invention for achieving the above object is to wirelessly detect the current flowing through the connection portion of the high-voltage unit, the ambient temperature and the connection temperature by using a monitoring device Transmitting; Delivering and analyzing the detected data to a microprocessor through a wireless module; Determining the presence or absence of deterioration and connection failure in the connection part of the high voltage part by comparing with a preset reference value based on the analyzed result; Detecting a current, an ambient temperature, and a connection temperature of the connection part of the high voltage part by using each monitoring device again while having a constant cycle transmission time when there is no abnormality in the connection part of the high voltage part; Outputting an alarm signal and transmitting the alarm signal to the embedded server through a communication line when there is an error in the connection of the high voltage unit; Collecting information stored in the embedded server in a communication unit, storing data in a central processing unit, outputting data diagnosed by an algorithm on a screen through an input / output processing unit, and wirelessly transmitting the stored data to a web server. It features.

The switchgear failure monitoring apparatus and method by detecting the deterioration of the connection of the high-voltage electric facility according to the present invention has the following effects.

First, it is possible to prevent the power failure and fire accident due to the connection failure by managing the abnormal connection failure state by using the magnetic field flowing in the line.

Second, the connection failure measurement analysis of the high-voltage connection to be measured can be remotely managed through the wireless transmission remote management to the magnetic field induction power supply that does not require wired power.

Third, by installing a gas sensor in the switchgear to detect the gas emitted from the insulating material it is possible to prevent the fire in advance.

Fourth, it is possible to protect the insulation equipment by installing a humidity sensor in the switchgear to monitor the short-circuit constantly due to the condensation phenomenon due to the temperature difference of the winter season or the insulation degradation due to the high humidity of the summer season.

Hereinafter, a switchgear failure monitoring apparatus and method by detecting a deterioration of a connection of a high-voltage electric facility according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic configuration diagram of a switchgear with a switchgear failure monitoring device attached to a deterioration detection of a high-voltage electrical facility according to the present invention, Figure 3 is a schematic structure of a wireless thermal sensor module mounted on the bus bar of FIG. The figure which shows.

As shown in Figure 2, the transformer 210 for changing the value of the voltage or current of the alternating current using electromagnetic induction, and one side is connected to the transformer 210, the other side is an external device (not shown) And a bus bar 220 connected to the bus bar 220 and a wireless thermal sensor module 300 installed at a predetermined portion of the bus bar 220 to wirelessly detect a connection failure using a magnetic field.

Here, the wireless thermosensitive sensor module 300 uses a semi-permanent line magnetic field induction power supply or an infrared type connection temperature monitoring device.

As shown in FIG. 3, the bus bar 220 is fastened to the high pressure bus bar 220 on the U, V, and W phases by a bolt 230.

Here, the wireless thermal sensor module 300 is one embodiment for the failure monitoring device of the switchgear.

4 is a block diagram schematically illustrating a switchgear failure monitoring value by detecting connection degradation of a high-voltage electric facility according to the present invention.

The switchgear failure monitoring device by detecting the deterioration of the connection of the high-voltage electric facility according to the present invention uses a magnetic field that is installed at the connection (not shown) between the devices of the high-voltage unit power supply in the switchgear as shown in FIG. 4. By accumulating electricity and driving the device with a micro power supply to calculate and analyze the abnormal state of connection failure and to transmit data wirelessly, and to collect and manage data wirelessly from the monitoring device 310. The data collection device 320, the embedded server 330 to comprehensively receive and manage the data collected and managed by the data collection device 320 through communication, and the embedded server 330 comprehensively Main server 350 for receiving and storing the managed data through the Internet network 340, and repeater 36 to the data stored in the main server 350 It is configured to include a monitoring management device 370 that monitors and manages remotely through 0).

Here, the monitoring management device 370 is a mobile phone service, the data stored in the main server 350 may be stored in the personal PC 380 through the Internet network 340.

In addition, the data transmitted and stored to the main server 350 through the Internet network 340 is remotely transmitted to the monitoring and management device 370 by using a web browser to monitor the connection failure of the line at a low price connection failure Power failures and fire accidents can be prevented in advance.

FIG. 5 is a block diagram schematically illustrating the monitoring apparatus of FIG. 4.

As shown in FIG. 5, the monitoring device 310 includes a current detector 311, a connection temperature winding 312 and an ambient temperature detector 313, a plurality of amplifiers and filters 314, and an A / D converter 315. ), A microprocessor 316 and a storage device 317, a magnetic field induction power supply 318 and a wireless communication device 319.

Here, the current detector 311 is to detect the current flowing in the connection of the high voltage portion, the current flowing in the connection of the high voltage portion detected by the current detector 311 is an amplifier and a low pass filter (LOW PASS FILTER) 314 The A / D converter 315 converts the digital signal to the microprocessor 316.

The connection part temperature sensor 312 and the ambient temperature sensor 313 detect the temperature and the ambient temperature of the connection part of the high pressure part, and the temperature signal detected by the temperature detectors 312 and 313 is passed through the amplifier and the low pass filter 314. The A / D converter 315 converts the digital signal to the microprocessor 316.

The microprocessor 316 determines the presence or absence of an abnormality by deteriorating the connection temperature and current value of the ambient temperature, the connection temperature and the current value converted into a digital signal through the A / D conversion unit 315 through a calculation algorithm. Each cycle is sent to the data collection device 320 through the wireless communication device (319).

The wireless communication device 319 operates in an idle mode (IDLE MODE) in normal times, and is configured to only operate when there is data to be transmitted to minimize the use current.

The magnetic field induction power supply unit 318 extracts the magnetic field generated by the current flowing in the connection line, converts it into a DC voltage in a current-voltage conversion circuit, and then converts it into a required voltage in a charge pump. It is charged to a large capacity capacitor (SUPER CAPACITOR).

That is, FIG. 6 is a block diagram schematically illustrating the magnetic field induction power supply device of FIG. 5.

As shown in FIG. 6, the magnetic field induction power supply 318 includes a current-voltage conversion circuit 318a, a charge pump circuit 318b driven by an external control signal, and a charging circuit 318c. ), A measurement circuit 318d, and a wireless module 318e.

The magnetic field induction power supply 318 configured as described above extracts the magnetic field generated by the current flowing in the line, converts it into a DC voltage in the current-voltage conversion circuit 318a, and then converts it into a required voltage in the charge pump circuit 318b. It converts and charges in the charging circuit 318c.

The charge pump circuit 318b and the charging circuit 318c are configured in two to supply power to the measurement circuit 318d and the wireless module 318e, respectively, and a microprocessor (not shown) includes two charge pump circuits ( A control signal is applied to 318b to monitor and control the power supply voltage.

FIG. 7 is a block diagram schematically illustrating the data collection device of FIG. 4.

As shown in FIG. 7, the data collection device 320 includes a display 321, a key input 322, an alarm output 323, a wireless module 324, an RS-485 communication 325, and a microcontroller. The processor 326 includes a data storage device 327 and a power supply circuit 328.

Here, the information according to the display 321, the key input 322, the alarm output 323 is transmitted to the data storage device 327 through the microprocessor 326 and stored, and through the wireless module 324 Wirelessly externally or externally via RS-485 communication 325.

The power supply circuit 328 is a circuit for applying power to the microprocessor 326.

8 is a block diagram schematically illustrating an embedded server of FIG. 4.

As shown in FIG. 8, the embedded server 330 collects the information transmitted from the collection device 320 in the communication unit 331 of the embedded server 330, stores data in the central processing unit 332, and applies the algorithm to the algorithm. The diagnosis data is output on the screen through the input / output processing unit 333 and the stored data is transmitted to the web server 390.

Data and events transmitted from the embedded server 330 is stored in the web server 390, and manages various information and trans management, alarm management, events and the like. In addition, when an event occurs, it can be managed anytime, anywhere by notifying the event information through a mobile device such as SMS text transmission and PDA to the customer or administrator.

Here, the communication unit 331 is divided into an input unit 331a and an output unit 331b, the information transmitted from the collection device 320 is transmitted to the environment unit 334 through the input unit 331a, the environment unit ( The information transmitted to 334 is divided into a data buffer area 335 and a data shared memory area 336, and the data buffer area 335 exchanges information with the communication processor 337, and the data shared memory area. 336 exchanges information with the central processing unit 332.

The communication processor 337 includes a data receiver 337a, a communication specialized converter 337b, and a communication detector 337c. The central processor 332 is information transmitted through the collection device 320. The data is processed by the data operation unit 332a and transmitted to the monitoring unit 332b, the alarm processing unit 332b, the accident information unit 332c, and the specialized conversion unit 332d, respectively.

 The communication unit 331 exchanges information with the data logging unit 339, and the communication processing unit 337 exchanges information with the file management unit 338.

The input / output processing unit 333, the file management unit 338, and the data logging unit 339 exchange information with each other through communication, and the information collected by the communication unit 331 is configured to be transmitted to the central processing unit 332. It is.

9 is a flow chart for explaining a switchgear failure monitoring method by detecting the deterioration of the connection of the high-voltage electrical facilities according to the present invention.

In the switchgear failure monitoring method by detecting the degradation of the connection part of the high-voltage electric facility according to the present invention, as shown in FIG. 9, the current, the ambient temperature, and the connection temperature flowing from the monitoring device to the connection part of the high-voltage part are detected and transmitted wirelessly. S110).

Subsequently, the detected data from the monitoring apparatus is transferred to the microprocessor through the wireless module and analyzed (S120).

Subsequently, it is determined whether the connection part of the high voltage part is deteriorated or defective by comparing with a preset reference value based on the result analyzed by the microprocessor (S130).

If there is no abnormality in the connection part of the high voltage part, the current, the ambient temperature, and the connection temperature of the connection part of the high voltage part are detected by using each monitoring device again while having a certain periodic transmission time (S140).

And when there is an error in the connection of the high-voltage unit outputs an alarm signal and transmits and stores to the embedded server through the communication line (S150).

Subsequently, the information stored in the embedded server is collected by the communication unit, the data is stored in the central processing unit, the data diagnosed by the algorithm is output on the screen through the input / output processing unit, and the stored data is wirelessly transmitted to the web server (S160).

Next, it is determined whether the wireless transmission to the web server is completed (S170).

If the transmission is not performed, it is judged again whether the connection of the high voltage part is deteriorated or poor. If the transmission is completed, the operation is completed.

Referring to the switchgear failure monitoring value by detecting the deterioration of the connection of the high-voltage electric facility according to another embodiment of the present invention.

That is, a switchgear failure detection value by detecting connection degradation of a high-voltage electric facility according to another embodiment of the present invention will be described an example of a gas detection mechanism by monitoring insulation degradation and insulation protective material degradation.

In general, a 22.9KV power receiving facility has a high probability of electric shock accidents compared to permanent facilities due to anxiety factors such as frequent work changes and poor charging of live parts. The insulation treatment material used as a means can be classified into the insulation cover for protecting an exposed terminal, and the bus-bar insulation treatment material which insulates the exposed part of a bus bar.

Insulation cover is used for transformer, cutout switch, raising transformer, automatic breaker switch and lightning arrester in water substation room.Insulation cover is used until it burns out and destroys once installed. It is necessary to be designed to have excellent characteristics such as arc resistance, weather resistance, etc., even if exposed to harsh environment such as factory areas, coastal areas, and construction sites where foreign matters are always present.

The present invention senses the temperature and gas due to overheating when subjected to thermal stress on the background of the application of the insulation cover of the high-pressure part installed in the protection of the facility as well as the electric shock protection side of the 22.KV water substation facility. We will prevent electrical fires by preventing equipment and facility accidents in advance.

10A and 10B are views showing the shape of a connection terminal located inside an insulation cover used in a transformer, and the bolt end portion of the terminal connection portion is in contact with the insulation cover, so that the risk outside the facility accident may be high. none.

In this case, conductive dust and environmental contaminants are attached to the bushing, the connection terminal, and the insulating cover to accelerate the tracking phenomenon between the connection terminal and the insulating cover, which in turn promotes burnout of the insulating cover.

FIG. 10B illustrates an example of an accident of an insulating cover in which a terminal bolt is in contact with an insulating cover and a tracking phenomenon occurs inside the insulating cover.

Although the connection terminal part for connecting the electric wire is initially completely tightened, the strength of tightening gradually decreases due to the temperature difference and the vibration of the transformer due to the seasonal change. Poor contact due to a drop in fastening pressure leads to continuous stress at the bushing connection terminals, which may damage the insulation cover by accumulated heat and arc.

Such a problem is always present in the equipment inside the switchgear, it is necessary to operate the switchgear to develop a device that can monitor and diagnose it to prevent electrical fires.

Therefore, it is necessary to install and operate a device which detects the temperature due to overheating of the insulation cover near the busbar and the connection point and the gas generation due to deterioration over a long period with a gas sensor.

Insulating cover for the junction of the inside Switchgear normally high-pressure bus and the device mainly consists of PVC material, while the thermal deformation temperature if left for a long period of time is substantially long, 90 ℃ the insulating cover to the temperature, gradually deteriorate for this CO and CH ₂ And gas of the chemical component of CH ₃ is generated.

If it is left for a long time due to loosening of the connection part of the high voltage busbar in the switchgear or loosening of the connection due to mechanical shock and vibration, it may deteriorate due to arcing and tracking phenomenon due to PVC insulation deterioration, and the above gas is generated and time elapses. This will lead to a fire.

In this way, by installing a gas sensor to detect the CO and CH ₂ and CH ₃ in the high-pressure section to prevent fire due to deterioration and burnout of the insulation cover. The detection level for each gas is divided into upper and lower weights to transmit the following alarm message.

A) Attention is required for gas concentrations below 30%.

B) Gas concentrations of 31 to 50% transmit a hazard alarm.

C) The gas concentration range of 51% or higher transmits an emergency cut off alarm message and puts out a fire.

Next, the high-voltage bus bar and the junction temperature detection algorithm will be described.

In the case of high voltage switchboards, bolts, screws, and connecting slabs are used to connect the connections between the high voltage busbars and the high voltage busbars and equipment which are hard to reach.

When the customer load is operated under heavy load or overload, a large amount of current flows in the bus, causing the connection to overheat, resulting in loosening of screws and bolts. If the overheating phenomenon is left as it is for a long time, not only the allowable current of the bus is reduced, but also the loosening of the connection part is accelerated, and an arc is generated in the bus, leading to a large accident. Countermeasures are as follows.

First, a thermosensitive sensor is attached near the high voltage busbar connection part to implement a system that constantly monitors the overheating state of the switchgear by measuring the bus temperature, the temperature of the connection part, and the ambient temperature inside the switchboard.

Always monitor the temperature difference between the ambient temperature and the bus surface temperature inside the switchgear, and when the temperature falls below 30 ° C, the allowable current of the bus decreases. Therefore, the allowable current of the bus under heavy load or overload is monitored. The degradation of durability due to bus deterioration should be monitored.

Subsequently, when there is a transformer, a breaker, a switchgear, a high-voltage transformer near the busbar connection part, heat generation near the busbar connection part causes convection and conduction to the epoxy mold or insulator, which is an insulating material of the device, and the temperature rapidly accelerates. It often causes insulation deterioration in equipment and peripherals, or, in severe cases, fires of flammable insulating materials, and even explosion of insulation in switchboards. Therefore, it is detected in advance to eliminate the risk of deterioration and fire.

Table 1 below shows the temperature rise limit and the maximum allowable temperature for each part of the switchboard according to IEC and KSC standards. In the present invention, the temperature range of the thermosensitive temperature is set using the table below.

The temperature rise test of the busbar shall not exceed 500 kVA, in principle, when the temperature of each part is reached consistently during continuous operation with the transformer of the maximum capacity that can be accommodated by switchboard or cubicle. In this case, the temperature rise test should be carried out using a ventilator.

location Temperature rise limit (℃) Maximum allowable temperature (℃)  Bolt tightening part Tin plating 65 105 Silver or nickel plating 75 115 Nadong 50 90  Connection Nadong 35 75 Silver or nickel plating 65 105 Tin plating 50 90

First, the temperature detection for the bolted portion is as follows.

In other words, if the temperature of the thermosensitive sensor is 60 ℃ or less, the exposed part is in a normal state.If the temperature is 61 ℃ ~ 80 ℃, the caution alarm state is set. Then, an emergency alarm alarm message is issued to analyze the cause of overheating at the connection of the bus.

In the case of silver or nickel plated parts of the bolted part, if the temperature of the thermal sensor is 70 ° C or lower, it is in a normal state.If the temperature is 71 ° C to 90 ° C, a caution alarm is required. If the alarm condition is exceeded and the temperature exceeds 115 ° C, an emergency alarm alarm message is issued to analyze the cause of overheating at the connection of the bus.

In the case of tin plating on the bolted part, if the temperature of the thermal sensor is 70 ° C or lower, it is in a normal state, and when the temperature is 71 ° C to 90 ° C, a caution alarm state is reached. If the temperature exceeds 105 ℃, an emergency alarm alarm message is issued to analyze the cause of overheating at the connection of the bus.

The temperature detection as described above sets the duration of the detection time to 30 minutes or more in each state to prevent malfunction of detection due to temporary overheating.

Subsequently, the temperature detection for the connection of the high pressure part is as follows.

In other words, the exposed part shall be in a normal state when the temperature of the thermal sensor is 55 ° C or lower, and in a caution alarm state when 56 ° C to 65 ° C, and as a dangerous alarm state when it is 66 ° C to 74 ° C and exceeding 75 ° C. Then, an emergency alarm alarm message is issued to analyze the cause of overheating at the connection of the bus.

If the tin-plated part is 60 ℃ or lower, the tin plated part shall be in a normal state, and if it is 61 ℃ ~ 80 ℃, it will be a caution alarm state, if it is 81 ℃ ~ 90 ℃, it will be a dangerous alarm state and if it exceeds 91 ℃, An emergency alarm alarm message is issued to analyze the cause of overheating at the connection of the bus.

Silver or nickel plated parts should be in a normal state if the temperature of the thermal sensor is 70 ° C or below, and a caution alarm for 71 ° C to 90 ° C, and a dangerous alarm for 91 ° C to 104 ° C. If exceeded, an emergency alarm message will be issued to analyze the cause of overheating at the connection of the bus.

And the leakage monitoring of the switchgear equipment by the humidity detection is as follows.

That is, when the switchboard is exposed to the outside, condensation may occur on the panel due to humidity caused by temperature differences between the inside and the outside of the switchboard during the winter and rainy seasons. This can cause arcing.

Generally, the humidity condition that causes short circuit and condensation depends on the ambient temperature, but the humidity is usually detected based on 85% to monitor the insulation of the panel and the switchgear. To this end, a humidity sensor is installed inside the switchgear to monitor temperature as well as humidity at all times to prevent short circuits and arcing caused by insulation degradation.

On the other hand, the present invention described above is not limited to the above-described embodiment and the accompanying drawings, it is possible that various substitutions, modifications and changes within the scope without departing from the technical spirit of the present invention It will be apparent to those skilled in the art.

1 is a side view schematically showing a general switchgear

2 is a schematic configuration diagram of a switchgear equipped with a switchgear failure monitoring device by detecting a deterioration of a connection of a high-voltage electric facility according to the present invention.

3 is a diagram illustrating a schematic structure of a wireless thermal sensor module mounted on the bus bar of FIG.

Figure 4 is a block diagram schematically showing the switchgear failure monitoring value by detecting the deterioration of the connection of the high-voltage electrical facilities according to the present invention.

5 is a block diagram schematically illustrating the monitoring apparatus of FIG. 4.

6 is a block diagram schematically showing the magnetic field induction power supply of FIG.

FIG. 7 is a block diagram schematically illustrating the data collection device of FIG. 4. FIG.

8 is a block diagram schematically illustrating the embedded server of FIG. 4.

9 is a flow chart for explaining a switchgear failure monitoring method by detecting the deterioration of the connection of the high-voltage electrical facilities according to the present invention.

10a and 10b are views showing the shape of the connection terminal located inside the insulating cover used for the transformer

Explanation of symbols for the main parts of the drawings

210: transformer 220: busbar

300: wireless thermal sensor module

Claims (14)

The high voltage unit power supply of the power distribution panel including a housing having an inner space, a power device installed in the inner space of the housing and a bus bar for electrically connecting an external power supply source and the power device. In the connection failure monitoring device, A transformer that changes the value of alternating voltage or current using electromagnetic induction, One side is connected to the transformer and the other side is a bus bar connected to an external device; A wireless thermosensitive sensor module installed at a predetermined portion of the bus bar and detecting a connection failure to be transmitted to the outside and using a power through a magnetic field induction method; The humidity sensor is configured in the switchgear to detect leakage and humidity due to insulation degradation at all times, and the wireless thermosensitive sensor module A monitoring device which is installed at the connection between the devices of the high voltage part of the power distribution system in the switchgear, accumulates and uses electricity by using a magnetic field flowing in the line, monitors the abnormal state of the connection of the line, and transmits data wirelessly; A data collecting device for wirelessly collecting and managing data, an embedded server for comprehensively receiving and managing data collected and managed by the data collecting device through communication, and data managed comprehensively on the embedded server. The main server for receiving and storing the transmission through the network, and the monitor management device for remotely monitoring and managing the data stored in the main server through a repeater, the switchboard by the detection of degradation of the connection of the high-voltage electrical facility, characterized in that it comprises Surveillance device. delete The apparatus of claim 1, wherein the surveillance management device is a mobile phone service, and the data stored in the main server is stored in a personal PC through an internet network. The method of claim 1, wherein the monitoring device A current sensor for detecting a current flowing through the connection of the high voltage section; A connection part and an ambient temperature sensor for detecting the temperature and the ambient temperature of the connection part; An amplifier and a low pass filter for receiving and amplifying and filtering current and temperature information flowing through the connection of the high voltage part; An A / D converter converting the current and temperature information amplified and filtered through the amplifier and the low pass filter into a digital signal and outputting the digital signal; Determination of the abnormality of the ambient temperature, connection temperature and current information converted into digital signals by the A / D conversion unit through deterioration and connection failure calculation algorithm to generate an abnormality or to a data collection device through a wireless communication device at regular intervals. Microprocessor to send, Magnetic field induction power supply that extracts the magnetic field generated by the current flowing in the connection line and converts it into DC voltage in the current-voltage conversion circuit and then converts it into the required voltage in the charge pump circuit and charges the large capacity capacitor through the charging circuit. Switchgear failure monitoring device by detecting the deterioration of the connection of the high-voltage electrical facility, characterized in that made. The switchgear according to claim 4, wherein the wireless communication device operates in an idle mode and is configured to only operate when there is data to be transmitted, thereby minimizing current. Bad monitoring device. The apparatus of claim 4, wherein the charge pump circuit and the charging circuit are each composed of two charge pump circuits. The method of claim 1, wherein the embedded server collects the information transmitted from the collection device in the communication unit of the embedded server to store the data in the central processing unit and output the data diagnosed by the algorithm on the screen through the input and output processing unit, the stored Switchgear failure monitoring apparatus by detecting the deterioration of the connection of the high-voltage electrical facility, characterized in that to transmit the data to the web server. The method of claim 1, wherein a gas sensor for detecting CO, CH ₂ and CH ₃ is installed in the high pressure section to prevent fire of the insulation cover from deterioration and burnout. Switchgear failure monitoring device 10. The apparatus of claim 8, wherein the gas sensor transmits an alarm message by dividing the detection degree into upper and lower loads.  The method of claim 9, wherein the transmission of the alert message. When the detected gas concentration is 30% or less, a caution alarm is issued, a gas concentration of 31-50% transmits a danger alarm, and a gas concentration range of 51% or more transmits an emergency cut off alarm message. Switchgear failure monitoring device by detecting degradation of connection part of electric facility. delete delete The apparatus of claim 1, wherein the wireless thermosensitive sensor module uses an infrared type connection temperature monitoring device. A current sensor for detecting a current flowing through the connection of the high voltage part, a connection part and an ambient temperature sensor for detecting the temperature and the ambient temperature of the connection part, a humidity sensor and a humidity sensor that constantly detects a short circuit and humidity due to insulation degradation, and An amplifier and a low pass filter for amplifying and filtering current and temperature information flowing through the connection of the high voltage section, and an A / D for converting and outputting current and temperature information amplified and filtered through the amplifier and the low pass filter into a digital signal. Determination of degradation of the connection part and abnormality of the connection error is performed based on the ambient temperature, the connection part temperature, and the current information converted into a digital signal by the conversion part and the A / D conversion part. The microprocessor which is sent to the data collection device through the After extracting the generated magnetic field and converting it into DC voltage in the current-voltage conversion circuit and converting it into the required voltage in the charge pump circuit and charging it to the large capacity capacitor through the charging circuit, Detecting and transmitting the gas, the humidity, the current, the ambient temperature, and the connection temperature to the connection unit wirelessly; Delivering and analyzing the detected data to a microprocessor through a wireless module; Determining the presence or absence of deterioration and connection failure in the connection part of the high voltage part by comparing with a preset reference value based on the analyzed result; Detecting gas, humidity, current, ambient temperature, and connection temperature of the connection part of the high-pressure part by using each monitoring device again while having a predetermined cycle transmission time when there is no abnormality in the connection part of the high-pressure part; Outputting an alarm signal and transmitting the alarm signal to the embedded server through a communication line when there is an error in the connection part of the high voltage part; Collecting information stored in the embedded server in a communication unit, storing data in a central processing unit, outputting data diagnosed by an algorithm on a screen through an input / output processing unit, and wirelessly transmitting the stored data to a web server. A switchgear failure monitoring method by detecting connection degradation of a high-voltage electric facility.

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