KR101631992B1 - Arc flash detection system using prism - Google Patents

Arc flash detection system using prism Download PDF

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Publication number
KR101631992B1
KR101631992B1 KR1020150133645A KR20150133645A KR101631992B1 KR 101631992 B1 KR101631992 B1 KR 101631992B1 KR 1020150133645 A KR1020150133645 A KR 1020150133645A KR 20150133645 A KR20150133645 A KR 20150133645A KR 101631992 B1 KR101631992 B1 KR 101631992B1
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KR
South Korea
Prior art keywords
ultraviolet ray
arc flash
sensor
detecting
arc
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KR1020150133645A
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Korean (ko)
Inventor
박기주
박건우
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주식회사 케이디파워
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/429—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to measurement of ultraviolet light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/185—Electrical failure alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The present invention relates to an arc flash detection system using a prism, which minimizes a safety accident of a power apparatus and casualties by detecting an ultraviolet ray, a visible ray, and an ultraviolet ray and a visible ray generated due to an arc flash and tripping a circuit breaker in a short time when the arc flash is generated. The arc flash detection system using a prism comprises: a housing which includes at least one power control panel among a high voltage distribution panel, a low voltage distribution panel, a motor control panel, and a distribution panel; a first ultraviolet ray detection sensor which detects an ultraviolet ray of an arc flash generated in the housing; a visible ray detection sensor which detects a visible ray of the arc flash generated in the housing; a current transformer which detects a disturbance of a current generated due to the arc flash in the housing; and a controller which is disposed in the housing, has an inner surface to which a second ultraviolet ray detection sensor is attached, receives the ultraviolet ray, the visible ray, and the disturbance of the current respectively detected from the first ultraviolet ray detection sensor, the visible ray detection sensor, and the current transformer, compares and calculates the ultraviolet ray, the visible ray, and the disturbance of the current, and outputs a trip signal of a circuit breaker when it is determined that the arc flash is generated, wherein the second ultraviolet ray detection sensor separates the arc flash generated in the housing through a prism at a front end thereof and detects an ultraviolet ray region.

Description

[0001] Arc flash detection system using prism [

The present invention relates to an arc flash detection system using a prism. More particularly, the present invention relates to an arc flash detection system using a prism that detects a specific disturbance caused by an ultraviolet ray, a visible ray and an arc and trips the breaker in a short time when an arc flash occurs, And an arc flash detection system using the same.

Generally, various terminals and bus-bar are exposed to the outside in the case of high and low voltage switchboards for receiving and transforming high-voltage and low-voltage electricity, motor control panel and distribution board, Safety checks should be strictly carried out during safety inspections and maintenance of facilities requiring access.

In particular, for the maintenance and maintenance of high- and low-voltage switchboards, motor control boards and distribution boards in live condition, the manager often accesses the high- and low-voltage switchboards, the motor control panel and the distribution board. In this case, You have to know and cope enough.

Conventional high / low voltage switchgear, motor control panel, and panel safety accident prevention system have a method of installing and shielding a shielding network (insulator) to prevent electric shock accidents in high and low voltage switchgear, motor control panel, Respectively.

However, in the conventional high / low voltage switchgear, motor control panel, and distribution board safety accident prevention system, since the access to the shielding network is suppressed, electric shock accident often occurs due to careless approach.

Therefore, recently, in order to solve such a problem, Korean Patent Registration No. 1076772 (the name of the invention: a danger warning system for a power transmission and distribution panel using a hybrid sensor; hereinafter referred to as "cited invention 1") has been proposed.

In this reference 1, a risk alarm is generated when a person is approaching within a predetermined distance in a danger zone or a protection zone, and a warning signal is transmitted to the object And a main control unit for calculating an approach distance and performing a differential alarm according to the calculated approach distance to recognize an electric shock risk.

Therefore, in Reference 1, it is determined whether or not an alarm operation is performed based on motion information within a predetermined distance, which is installed in a dangerous area or an area requiring protection in a switchboard, and based on the object detection information, By calculating the approach distance to an object and generating a danger warning to recognize the danger of electric shock by performing differential warning according to the calculated approach distance, it is possible to prevent an electric shock accident caused by careless approach There is an advantage that it has.

On the other hand, according to the cited invention 1, since only a differential alarm is performed according to the approach distance of the operator, there is a limitation in that measures for protecting the close operator are not provided.

In order to solve such a problem, Korean Patent Laid-Open Publication No. 2008-0057176 (the name of the invention: a method of reducing the arc flash protection level of a circuit breaker and a circuit breaker; hereinafter referred to as "cited invention 2") has been proposed, A circuit breaker comprising: a microprocessor; and a wireless sensor in communication with the microprocessor, the wireless sensor configured to detect the presence of a person within a predetermined area around the circuit breaker, The protection level of the circuit breaker is changed by the microprocessor when it is detected by the sensor and the current signal from the protection circuit (not shown) is used to control the voltage regulation of the circuit breaker Circuit.

The regulated signal is then supplied to the microprocessor of the circuit breaker. It also allows the wireless sensor and flux-shifter circuit to be connected to the microprocessor.

Thus, in Reference 2, the circuit breaker is initially programmed to operate at a normal protection level.

If an overload occurs in the circuit to which the circuit breaker is connected, the microprocessor sends a signal to the flux shifter circuit and the trip unit (not shown) of the circuit breaker trips.

In particular, Reference 2 further discloses that the range of the wireless sensor specifies a predetermined zone, so that whenever a presence of a human is detected within that zone, the detection is communicated to the microprocessor, The level of protection provided by the circuit breaker is reduced such that the flux shifter trips the circuit breaker when the current signal reaches the reduced level set in the microprocessor in the light of the fact that it has been detected.

Once a person leaves the safe zone, the microprocessor can be programmed to reset its protection level to normal or any other desired level.

Thus, if a maintenance and / or test staff, who maintains and / or tests a movable gear including a circuit breaker as detected by a wireless sensor, walks into a given area, The arc-flash protection level is automatically lowered without having to reach the switch, thereby minimizing or eliminating the risk of the user being exposed to a potential arc flash associated with accidental fault, thereby achieving a further effect on operator protection .

As described above, Reference 2 shows that when the person is detected within the set distance, the arc flash protection level is lowered so that the worker can be protected from the arc flash, and if the worker is out of the set distance, However, in reality, the grid voltage, the distance between the operator and the conductor approaching the switchgear, the arc fault current calculated by the symmetrical three-phase short-circuit current, and the resulting incident energy level are different. The arc flash protection level is excessively lowered, so that a power failure due to frequent trips may occur, or the arc flash protection level may be maintained at a high level, which may cause damage to personnel and equipment due to the arc flash.

In addition, arc flash accidents occur in all electrical facilities including distribution boards and switchboards. As the duration of generation increases, the arc energy becomes large, which causes not only great damage to electric power equipment but also personal injury due to accidents.

In addition, domestic arc flash accidents account for 25% of all electric accidents, and more than 3,000 occur. Such arc flash is a time when it is necessary to take safety measures against faults and accidents of electric power equipment such as a switchboard.

(Patent Document 1) Korean Patent No. 10-1076772 (entitled " Risk Warning Device for Electric Shielding Power Transmission Using Composite Sensor)

(Patent Document 2) Korean Patent Publication No. 2008-0057176 (Title of the Invention: Method for Reducing Arc Flash Protection Level of Circuit Breaker and Circuit Breaker)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to minimize ultraviolet rays and visible light among special disturbances generated by ultraviolet rays, visible rays, and arc flashes, An object of the present invention is to provide an arc flash detection system using a prism.

According to an aspect of the present invention, there is provided an arc flash detection system using a prism, including: a housing including a power control panel of at least one of a high voltage switchboard, a low voltage switchboard, a motor control panel and a distribution panel; A first ultraviolet ray detecting sensor for detecting an ultraviolet ray in an arc flash which is generated in the housing, a visible light ray detecting sensor for detecting a visible ray in the arc flash generated inside the housing, And a second ultraviolet ray detecting sensor formed on the inside of the housing for detecting an ultraviolet ray region by splitting the arc flash generated in the inside of the housing through a prism at the front end, Detection from detection sensor, visible light detection sensor and instrumental current transformer And a controller for receiving a disturbance of an ultraviolet ray, a visible ray and a current and comparing and calculating disturbances of the ultraviolet rays, the visible ray and the current, and outputting a trip signal of the breaker when it is determined that an arc flash is generated, A first and a second connection unit for receiving a signal detected by the ultraviolet ray detection sensor and an interlock connection unit for interconnection of the contacts of each other in order to prevent two signals from being simultaneously inputted, A third connection unit to which a visible light detection sensor for detecting a visible light is connected, and a second connection unit to which an alarm signal for generating an alarm signal A fourth connection unit to which a disturbance signal of a current detected through the current transformer is inputted, A trip coil part for outputting a trip signal of the circuit breaker in the event of an arc and a trip level part for adjusting the level of a trip signal output through the trip coil part and a power supply part for supplying power required for the controller .

The arc flash detection system using a prism according to an embodiment of the present invention has the following effects.

First, by using a prism, ultraviolet rays and visible rays are detected in a specific disturbance caused by an arc through ultraviolet rays in a wide area and ultraviolet rays through a porter sensor, visible rays through a loop sensor, and instrumental current transformers, It is possible to minimize power equipment and human casualties.

Second, it is possible to prevent the occurrence of the secondary damage by detecting the occurrence of the arc flash at the early stage and reducing the time for determining whether or not there is an accident.

1 is a conceptual diagram schematically showing a distribution panel to which an arc flash detection system using a prism according to the present invention is applied.
2 is a block diagram showing the controller of Fig.
Figs. 3 and 4 are a front view and a rear view of the controller shown in Fig. 1; Fig.

Hereinafter, the present invention will be described in detail with reference to the drawings. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of 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.

FIG. 1 is a conceptual diagram schematically showing a distribution panel to which an arc flash detection system using a prism according to the present invention is applied, FIG. 2 is a configuration diagram showing the controller of FIG. 1, Front view and rear view.

As shown in FIGS. 1 and 2, a distribution panel to which an arc flash detection system using a prism according to the present invention is applied includes a housing (not shown) including at least one power control panel of a high voltage switchboard, a low voltage switchboard, A first ultraviolet ray detection sensor 120 for detecting an ultraviolet ray among arc flashes generated in the housing 110 and a second ultraviolet ray detection sensor 120 for detecting a visible ray among the arc flashes generated in the housing 110, A sensor current transformer 140 for detecting a disturbance of an electric current generated due to the arc flash in the housing 110 and a sensor 130 for detecting an external current flowing through the housing 110 And a second ultraviolet ray detection sensor 152 for detecting an ultraviolet ray region by spectroscopy through a prism 151 at the front end is attached, Visible light, and current detected from the sensor 120, the visible light detection sensor 130, and the current transformer 140, and compares and calculates the disturbance of the ultraviolet, visible light, and current. When it is determined that the arc flash occurs, And a controller 150 for outputting information.

The power control board includes a main breaker 111, a bus bar bar 112, a charger bus bar 113, and an earth leakage breaker 114 have.

The controller 150 has a plurality of input terminals and an output terminal connected to the first ultraviolet ray detecting sensor 120, the visible ray detecting sensor 130 and the current transformer 140, The output terminal includes a trip coil for tripping the breaker, a signal, and a communication unit for performing communication with the outside.

The main breaker 110 may include a three-phase main breaker for inputting or interrupting three-phase power of the R, S, and T poles, which are industrial power sources. Alternatively, the main breaker 110 may include a four-phase main breaker for inputting or interrupting four-phase power of the R, S, T and N poles, which are industrial power sources. Meanwhile, the main breaker 110 may include a single-phase two-wire main breaker as a household power source.

The main breaker 111 is connected to the power input side from the outside and the power output side is connected with a plurality of bus bar bars 112.

The controller 150 includes a second ultraviolet ray detection sensor 152 using a prism 151 on its rear surface and the second ultraviolet ray detection sensor 152 is a protrusion type ultraviolet ray sensor.

Here, the rear surface of the controller 150 is the inside of the controller 150 that is not visible when viewed from the outside, for example, the inside surface of the door that can be opened and closed.

The controller 150 is disposed inside the housing 110.

The visible light detecting sensor 130 is a loop sensor for detecting a visible light generated in the distribution board and includes a main breaker 111 and a predetermined distance from the bus bar bar 112 and the charger bus bar 113 And is configured to surround the entire body in a state of being separated from the body.

The instrumental current transformer 140 detects disturbances (Sag, Swell, Swing, etc.) of the voltage flowing through the main bus bar 112.

The bus bar bar 112 has a rod shape when viewed in a plan view, and at least one bus bar bar 112 is disposed in a direction parallel to the Y axis direction.

One end of the bus bar bar 112 is connected to a terminal formed on the upper surface of the main breaker 111 and the other end opposite to the one end of the bus bar bar 112 is connected to the load side terminal.

Since the bus bar bar 112 is connected to the terminal formed on the upper surface of the main breaker 111 having a predetermined height, the bus bar bar 112 is separated from the bottom surface of the distribution board by the height of the main breaker 111.

The bus bar bars 112 are formed in a number corresponding to the number of phases of the power source output from the main circuit breaker 111.

For example, when three-phase power is output from the main breaker 111, three bus bar bars 112 are connected to the main breaker 111. [

When four-phase power is outputted from the main breaker 111, four main bus bars 112 are connected to the main breaker 111. [

The charger bus bar 113 is installed in a direction perpendicular to the bus bar bar 112 to electrically connect the bus bar bar 112 to the earth leakage breaker 114.

The earth leakage breaker 114 is connected to a charger bus bar 113 on one side thereof and the charger bus bar 113 is coupled to the bus bar bar 112.

The earth leakage breaker 114 divides the power supplied through the bus bar bar 112 from the charger bus bar 113 and outputs the power or cuts off the distributed power.

(Sag, Swell, Swing, etc.) of the DC voltage flowing through the main bus bar 112 through the instrumental current transformer 140 formed in the controller 150 and compares the disturbance (Sag, Swell, Swing, And determines whether there is an abnormality in the electric power flowing through the bar 112 and supplies high quality DC power.

Then, the information analyzed through the controller 150 is transmitted to the manager PC through the ModBus, and the manager PC transmits the DC voltage flowing in the main bus bar 112 and the DC current flowing in the branch bus bar 113 in real time Can be monitored by displaying the status.

In addition, if over-current or over-voltage occurs in the main bus bar 112 or the branch bus bar 113 during monitoring in real time through the manager PC, the controller can deliver the over-current or over-voltage to the manager via TCP / .

The signals detected from the first ultraviolet ray detecting sensor 120, the second ultraviolet ray detecting sensor 152 and the visible ray detecting sensor 130 are inputted to the first, second and third photosensors 161, 162 and 163 Each of the photosensors is a composite type sensor for detecting transmitted light by transmitting and integrating a space by opposing a light emitting element and a light emitting element. Therefore, the first ultraviolet ray detecting sensor 120, the second ultraviolet ray detecting sensor 152 and the visible ray detecting sensor 130 detect the intensity of the light detected by the first, second, and third photosensors 161, 162, The signal can be detected more accurately.

A signal processing unit 164 for processing the signal detected from the first ultraviolet ray detecting sensor 120 and outputting the processed signal as a signal indicating the occurrence of an arc is formed at the output end of the first photosensor 161.

The second ultraviolet ray detecting sensor 152 and the second ultraviolet ray detecting sensor 152 are connected to the output ends of the second photosensor 162 and the third photosensor 163 and the output end of the signal processing unit 164 and the output terminal of the instrumental current transformer 140, And an arc signal transfer unit 165 for transferring the signals detected from the light ray detection sensor 120, the signal processing unit 160, and the meter current transformer 140.

The output terminal of the instrumental current transformer 140 is configured with an amplifier 166 for amplifying and outputting the signal measured by the instrumental current transformer 140.

The arc detector 167 is connected to the output terminal of the arc signal transmitter 165 and the amplifier 166. The arc detector 167 detects an arc signal of the arc signal transmitter 165 and a current transformer 166) as an input, compares and calculates the arc signal, and outputs the arc signal.

The arc signal determined through the arc detection unit 167 is transmitted to the outside via the communication unit 168 and is outputted through the output unit 169 and can be monitored by an administrator.

The arc detection unit 167 is connected to the power unit 170 to receive necessary power.

The arc flash detection system using the prism according to the present invention includes a first ultraviolet ray detection sensor 120, a second ultraviolet ray detection sensor 152 for detecting an ultraviolet ray region by spectroscopy through the prism 151, The arc flash occurring inside the housing 110 is detected through the sensor 130 and the current transformer 140.

Here, the second ultraviolet ray detection sensor 152 that detects the ultraviolet ray region by spectroscopy through the prism 151 is a sensor for detecting an ultraviolet ray region generated during internal discharge, surface discharge, and corona discharge included in the arc flash .

The visible light detection sensor 130 is a sensor for detecting a visible light region when an arc flash occurs, and is an optical fiber loop sensor. The light generated by the arc flash is detected by a single optical fiber. Particularly, a plurality of light incidence portions formed on the side surface of the optical fiber by scratches, optical band-pass filters or the like are provided along the longitudinal direction. That is, the light generated due to the arc flash enters the core of the optical fiber through the light incidence portion, detects the incoming light, and detects the occurrence of the arc flash.

The instrumental current transformer 140 is a part for detecting a disturbance of a current occurring when an arc flash occurs.

The controller 150 includes a switch including an LCD area, an LED for receiving each sensor information, an ON / OFF function, and a reset function. The rear part of the controller 150 includes a first ultraviolet ray detection sensor 120 A second ultraviolet ray detection sensor 152 having a prism 151 for detecting an ultraviolet ray region by spectroscopically measuring an arc flash, and a second ultraviolet ray detection sensor 152 having a prism 151 for detecting an ultraviolet ray region, ).

3, the controller 150 includes a display unit 181 for displaying status information on the presence or absence of an arc on the front panel, and a plurality of A setting mode 183 for setting a time, an ESC 184 for turning off by an operation when an alarm occurs due to the occurrence of an arc, a function for setting ON / OFF function and reset function by touch operation And a setting unit 185.

The controller 150 includes first and second connectors 191 and 192 for receiving signals detected by the first ultraviolet ray detection sensor 120 and the second ultraviolet ray detection sensor 152 at the rear portion thereof, An interlock connection unit 193 for interlinking the contacts of each other in order to prevent simultaneous input of data, a communication connection unit 194 connected to an external device by wire, A third connection unit 196 to which a Bluetooth communication connection unit 195 for transmitting the Bluetooth signal through a Bluetooth communication and a visible light detection sensor 130 for detecting a visible light are connected and an alarm A signal connection unit 197 and a fourth connection unit 198 to which a disturbance signal of a current detected through the instrumental current transformer 140 is inputted, a power supply unit 199 for supplying power necessary for the controller 150, Trypsin in circuit breaker when arc occurs And comprises a trip coil (200) is output, the trip level 201 for adjusting the level of the trip co-trip signal is output through a portion (200). At this time, the arrangement for each of the components can be arbitrarily arranged.

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While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Can be carried out within a limited range. Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

110: housing 120: first ultraviolet detecting sensor
130: Visible light detection sensor 140: Current transformer
151: prism 152: second ultraviolet ray detection sensor

Claims (7)

A housing including a power control board of at least one of a high voltage distribution board, a low voltage distribution board, a motor control board and a distribution board,
A first ultraviolet ray detecting sensor for detecting an ultraviolet ray of an arc flash generated in the housing,
A visible light detecting sensor for detecting a visible light in the arc flash generated in the housing,
A current transformer for detecting a disturbance of a current generated due to an arc flash in the housing;
A second ultraviolet ray detecting sensor which is formed inside the housing and detects an ultraviolet ray region by splitting the arc flash generated in the inside of the housing through a prism at the front end, And a controller for comparing and calculating disturbances of ultraviolet rays, visible rays, and currents detected from the sensor and the current transformer for the instrument, and outputting a trip signal of the breaker when it is determined that arc flash occurs,
The controller includes first and second connecting portions for receiving signals detected by the first ultraviolet ray detecting sensor and the second ultraviolet ray detecting sensor on a rear surface thereof and first and second connecting portions for connecting the first and second connecting portions to each other, An interlock connection unit, a communication connection unit connected to an external device through a wire to perform communication, a Bluetooth communication connection unit for transmitting data via wireless communication, and a visible light detection sensor for detecting visible light A third connecting part for receiving a disturbance signal of a current detected through a current transformer for an instrument, a trip coil part for outputting a trip signal of the circuit breaker when an arc is generated, And a trip level portion for adjusting a level of a trip signal outputted through the trip coil portion,
And a power supply unit for supplying power to the controller. The arc flash detection system according to claim 1, wherein the second ultraviolet ray detection sensor is a protruding ultraviolet ray sensor. The arc flash detection system according to claim 1, wherein the visible light detection sensor comprises a loop sensor for detecting visible light generated inside the distribution board. The system of claim 1, wherein the visible light detection sensor is an optical fiber loop sensor for detecting a visible light region when an arc flash occurs. The apparatus according to claim 1, wherein the controller comprises: a display unit for displaying status information on the presence or absence of an arc on the front surface; and a display unit for displaying status information of at least one of the first and second ultraviolet ray detection sensors, A plurality of display sections for displaying whether an arc has occurred in the sensor as an LED light, a setting mode for setting a time, an ESC for turning off by an operation when an alarm occurs due to an arc occurrence, And a function setting unit for setting a function of the arc flash detecting unit. delete delete
KR1020150133645A 2015-09-22 2015-09-22 Arc flash detection system using prism KR101631992B1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR20190130755A (en) * 2018-05-15 2019-11-25 이준희 System for detecting area of arc flash

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JP2000346705A (en) * 1999-06-09 2000-12-15 Nissin Electric Co Ltd Arc light detector
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KR20100042379A (en) * 2008-10-16 2010-04-26 한국전기연구원 Method and apparatus for measuring of arc temperature in high voltage circuit breaker
KR101076772B1 (en) 2009-05-26 2011-10-26 주식회사 오샘코 Alarm device for electric shock danger in switch-board using complex sensors
KR20130034393A (en) * 2011-09-28 2013-04-05 한국전력공사 Apparatus and method for isolation deterioration of gas insulated switchgear
KR101345234B1 (en) * 2013-09-12 2014-01-15 지투파워 (주) Hazard diagnos apparatus and method with function of controlling approch distance in accordance with arc flash energy

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346705A (en) * 1999-06-09 2000-12-15 Nissin Electric Co Ltd Arc light detector
KR20080057176A (en) 2006-12-19 2008-06-24 제너럴 일렉트릭 캄파니 Circuit breaker with adjustable arc-flash protection and wireless sensor and method of use
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190130755A (en) * 2018-05-15 2019-11-25 이준희 System for detecting area of arc flash
KR102550804B1 (en) 2018-05-15 2023-06-30 송인관 System for detecting area of arc flash

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