KR101232750B1 - Distributing board and motor control center, cabinet panel having an insulation degradation diagnosis system for detecting arc or corona generation using contactless complex sensors - Google Patents

Abstract

PURPOSE: Switchgear having a degradation diagnosis system monitoring arc and corona discharge by a contactless composite sensor, a motor control board using the same, and a distribution board thereof are provided to confirm whether normal operation or not and to check an installation environment change of an electromagnetic wave receiving antenna by using a standard electric wave generator. CONSTITUTION: An electromagnetic wave detection unit(111) measures a frequency of an electromagnetic wave signal radiated from an electric power device in switchgear(1). An ultraviolet detection unit(112) measures a wavelength of an ultraviolet ray radiated from the electric power device in the switchgear. A temperature detection unit(113) measures temperature inside the switchgear. A standard electric wave generation unit generates a standard signal. A collection unit(120) collects a wavelength and temperature of the ultraviolet ray. A diagnosis unit(130) diagnoses a discharge form. [Reference numerals] (120) Collection unit; (130) Diagnosis unit

Description

Distributing Board and Motor Control Center, Cabinet Panel Having an Insulation Degradation Diagnosis System for Detecting Arc or Corona Generation using Contactless Complex Sensors}

The present invention is installed in the switchgear and motor control panel, the electromagnetic wave receiving antenna and ultraviolet sensor, temperature sensor in the distribution panel, the arc by a non-contact composite sensor for diagnosing the occurrence of arc or corona due to poor connection and disconnection of the switchgear and motor control panel, distribution panel. And a switchgear, a motor control panel, and a distribution panel having a deterioration diagnosis system for monitoring and diagnosing corona discharge.

Due to the advancement of the industry, electric power demand is continuously increasing, and accidents caused by electric power facilities in the switchboard are frequently occurring. These accidents can lead to technical losses as well as economic losses.

Typically, the arc insulation of internal lines due to vibrations and shocks generated during operation of transformers or contact points in switchboards oxidizes and thermally decomposes surrounding insulation to form a carbonized conductive path. As Joule heat is generated by the movement of electrons around the carbonization conductive path, insulation strength is lowered, and an accident such as an electric fire or an electric shock occurs. Accordingly, researches on various inspection techniques have been conducted to prevent accidents occurring in switchboards.

Conventionally, an electromagnetic wave detection method for measuring an electromagnetic wave radiated during insulation deterioration and confirming an abnormality of a switchboard has been proposed. The conventional electromagnetic wave detection method detects electromagnetic waves in the VHF and UHF bands in the frequency ranges of 30 Hz to 300 MHz, 300 MHz to 3 GHz, and exhibits high resonance and sensitivity, but is easily affected by vibration and external disturbance waves, and thus accurate degradation measurement. This is difficult.

In addition, in the prior art, it is not possible to confirm whether the initial installation environment and setting of the electromagnetic wave reception antenna have changed due to vibrations and dust generated in the switchgear and the motor control panel and the distribution panel, and the change in the internal environment and the installation environment of the switchgear and the motor control panel and the distribution panel. Also can not be confirmed.

Therefore, in the related art, malfunction of the electromagnetic wave reception antenna can be prevented due to a change in the installation environment.

Korean Registered Patent No. 0938883 (2010.01.19)

The present invention has been made to solve the above-mentioned problems, a non-contact composite that can check the normal operation of the electromagnetic wave receiving antenna installed in the switchgear and motor control panel, the distribution panel and the change of the installation environment by using the reference wave generator It is to provide a switchgear, a motor control panel and a distribution panel having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a sensor.

In addition, the present invention measures the ultraviolet rays and electromagnetic waves emitted when a discharge occurs in the power switchboard and the motor control panel, the power equipment installed inside the distribution panel, the temperature and analyze the measured data to the connection and disconnection of the switchboard and motor control panel, distribution panel The present invention provides a switchgear, a motor control panel, and a distribution panel having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor for diagnosing whether an arc or corona is generated.

In order to achieve the above object, a switchgear and a motor control panel having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor according to the present invention, the distribution panel is generated in the power switchboard and motor control panel, power equipment inside the distribution panel Electromagnetic wave detection unit for measuring the frequency of the electromagnetic wave signal emitted by the discharge discharge, UV detection unit for measuring the wavelength of the ultraviolet radiation emitted by the discharge generated in the power switchboard and motor control panel, power distribution panel, switchgear and motor control panel, inside the distribution panel A temperature detector configured to measure a temperature of the reference signal; a reference wave generator configured to generate a reference signal at an intermediate frequency of a frequency band to which the frequency of the electromagnetic wave signal measured by the electromagnetic wave detector belongs and a radio wave preset for the intermediate frequency; Electromagnetic wave transmission through the electromagnetic wave detector When receiving a call, the reference signal generator generates the reference signal after a predetermined time elapses, and receives the generated reference signal to determine whether the received intensity of the received reference signal is outside the allowable range. A collecting unit for determining whether it is normal and collecting the frequency of the measured electromagnetic wave signal according to the determination result and collecting the wavelength and temperature of ultraviolet rays measured by the ultraviolet detecting unit and the temperature detecting unit; It includes a diagnostic unit for diagnosing the discharge form by analyzing the measurement data.

The electromagnetic wave detector is characterized in that for measuring the frequency band of 0.1MHz ~ 800MHz.

The ultraviolet detection unit is characterized in that for measuring the ultraviolet wavelength band of 210nm ~ 400nm.

The temperature detection unit is characterized in that implemented by an infrared sensor for measuring the temperature range of 10 ℃ ~ 150 ℃.

The allowable range is characterized in that the range of ± 10% of the propagation intensity.

The collecting unit checks whether the reception intensity of the electromagnetic wave signal detected by the electromagnetic wave detecting unit is within a reference range when the electromagnetic wave detecting unit is confirmed to be normal.

The reference range is characterized in that 42 ㏈㎶ / m ~ 70 ㏈㎶ / m.

The collection unit collects the frequency of the detected electromagnetic wave signal as measurement data if the received intensity of the detected electromagnetic wave signal is within a reference range, and if the received intensity of the detected electromagnetic wave signal is outside the reference range, It is characterized in that the frequency is not collected as measurement data.

The discharge form is characterized in that the arc or corona.

The present invention can determine whether the installation environment of the switchgear and the motor control panel, the distribution panel by checking whether the electromagnetic wave receiving antenna is installed in the first installed state using the reference signal generator, the change in the installation environment of the switchboard and motor control panel, distribution panel Accordingly, it is possible to prevent malfunction by adjusting the installation environment of the electromagnetic wave receiving antenna.

The present invention measures the ultraviolet rays and electromagnetic waves emitted when a discharge occurs in a power distribution panel and a motor control panel, a power device installed inside the distribution panel, and analyzes the measured data to determine the poor connection and disconnection in the switchboard and motor control panel, distribution panel. It can diagnose the occurrence of arc or corona.

1 is a block diagram showing a degradation diagnostic system of the switchgear according to the present invention.
Figure 2a is a block diagram showing a detection apparatus included in the degradation diagnostic system of the switchgear according to the present invention.
FIG. 2B is a circuit diagram showing the detection device shown in FIG. 2A.
FIG. 3 is a block diagram illustrating the diagnosis unit illustrated in FIG. 1.
4 is a flowchart illustrating a method for diagnosing degradation of a switchgear, a motor control panel, and a distribution panel according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The degradation diagnosis system proposed in the present invention may be applied to a switchgear, a motor control center (MCC), a distribution panel, and the like.

1 is a block diagram showing a degradation diagnostic system of the switchgear according to the present invention, Figure 2a is a block diagram showing a detection device included in the degradation diagnostic system of the switchgear according to the present invention, Figure 2b is shown in Figure 2a 3 is a circuit diagram illustrating the detection apparatus shown in FIG. 3, and FIG. 3 is a block diagram illustrating the diagnosis unit illustrated in FIG. 1. Here, the case of the switchgear will be described as an example to aid the understanding of the present invention.

Referring to the drawings, the degradation diagnosis system detects the insulation state of the switchboard 1 based on the detection device D for detecting a parameter required for the degradation diagnosis of the switchgear 1 and the data detected through the detector D. It includes a diagnostic unit 130 to diagnose. The enclosure of the switchboard 1 is made of metal, the enclosure is grounded, and shields external radio waves.

As shown in FIG. 2A, the detection device D includes an electromagnetic wave detector 111, an ultraviolet ray detector 112, a temperature detector 113, a reference wave generator 115, and a collector 120.

The electromagnetic wave detector 111 detects electromagnetic waves emitted when the series arc discharge or the corona discharge occurs in the switchboard 1. The series arc discharge is generated from an aged cable or deteriorated terminal in the switchgear 1, and the corona discharge is generated from a power transformer such as a metering outfit (MOF) installed in the switchgear and a bushing or support insulator of a transformer. do.

The electromagnetic wave detector 111 includes a receiving antenna 111a for receiving electromagnetic waves of a specific frequency band and an amplifier 111b for amplifying the magnitude of the electromagnetic signal received through the receiving antenna 111a. The receiving antenna is implemented as a planar (disc) antenna measuring a frequency band of 0.1 MHz to 800 MHz.

The ultraviolet detection unit 112 measures the light spectrum represented by the series arc discharge generated in the power device installed inside the switchgear. The ultraviolet detector 112 includes an ultraviolet sensor 112a for detecting an ultraviolet component generated when an arc discharge is generated, and an amplifier 112b for amplifying a signal measured by the ultraviolet sensor. The ultraviolet sensor measures the ultraviolet wavelength band of 210nm ~ 395nm.

The amplifiers 111b and 112b respectively provided at the output terminals of the electromagnetic wave detector 111 and the ultraviolet ray detector 112 are for detecting minute electromagnetic waves and ultraviolet rays. The amplifier of the electromagnetic wave detector 111 has a gain of 40 kHz and a frequency response of 50 kHz to 35 MHz (-3 kHz), and the amplifier of the ultraviolet detector 112 has a gain of 20 dB and a frequency response of DC to 45 kHz (-3 dB).

The temperature detector 113 measures a temperature caused by heat generated from power devices inside the switchgear, and monitors a change in the internal temperature of the switchgear. The temperature detector 113 includes an infrared temperature sensor having a sensitivity of 10 占 ℃ / 占 폚 in the measured temperature range of 10 占 폚 to 150 占 폚.

The electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113 may be installed in a plurality of switchboards.

The reference wave generator 115 is installed in the switchboard 1 to generate and emit a reference signal with an intermediate frequency of a frequency band to which the electromagnetic wave detected by the electromagnetic wave detector 111 belongs and a radio wave preset for the intermediate frequency. do. The reference wave generator 115 generates a reference electromagnetic wave (reference signal) at a predetermined intermediate frequency and a radio wave intensity of a radiation frequency band for each discharge state.

For example, when a corona is generated between the terminals, since the radiation frequency bands are 10 MHz to 20 MHz and 0.1 MHz to 0.4 MHz, the reference radio wave generator 115 determines the intermediate frequency 15 based on information previously set. It generates a reference signal with a radio wave strength of 50 전파 / m and a reference signal with an intermediate frequency of 0.2 MHz with a radio wave strength of 60 ㏈㎶ / m.

The collector 120 collects measurement data measured by the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113. The measurement data includes the frequency and reception intensity of the electromagnetic wave detected by the electromagnetic wave detector 111, the wavelength of the ultraviolet ray detected by the ultraviolet ray detector 112, and the internal temperature measured by the temperature detector 113.

The collection unit 120 includes a plurality of channels 121 for connection with the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113, the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature. Communication module for enabling wired and wireless communication between an analog-digital converter 122 for converting an analog signal measured by the detector 113 into a digital signal and an external terminal (for example, the diagnosis unit 130). 123.

The collection unit 120 generates a reference signal by controlling the reference wave generator 115 when a predetermined time (for example, 1 to 2 seconds) elapses after receiving the electromagnetic signal through the electromagnetic wave detector 111. At this time, the reference wave generator 115 controls the reference signal at a predetermined intermediate frequency and a radio wave intensity with respect to a frequency band to which the frequency of the electromagnetic wave signal detected by the electromagnetic wave detector 111 under the control of the collecting unit 120 belongs. Generate. In the present exemplary embodiment, a reference signal is generated by generating a reference signal with an intermediate frequency of the frequency band to which the frequency of the electromagnetic wave signal detected by the electromagnetic wave detector 111 belongs, and a predetermined radio wave intensity for the intermediate frequency, as an example. In consideration of environmental factors such as device layout and size of switchgear, it can change and set the frequency, radio wave intensity, frequency of occurrence of reference signal, and standard radio wave so that administrator can select and control the frequency and radio wave intensity of reference signal arbitrarily. The selector switch may be added to the generator 115. In other words, the preset frequency, radio wave strength, frequency of occurrence, etc. may be selectively implemented according to the site situation where the switchboard is installed.

The collection unit 120 measures the reception intensity of the reference signal received after the reference signal is generated, and checks whether the measured reception intensity is outside the allowable range. Here, the allowable range is ± 10% of the propagation intensity (generating intensity) of the reference signal when the reference signal is generated.

The collector 120 determines that the electromagnetic wave detector 111 operates normally when the received intensity of the received reference signal is within the reference range, and the electromagnetic wave signal received by the electromagnetic wave detector 111 is an arc or corona inside the switchboard. Recognize that the signal generated by can be normally received. Accordingly, the collection unit 120 collects measurement data measured by the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113, and transmits the measurement data to the diagnosis unit 130 to diagnose the diagnosis by the diagnosis unit 130. Allows you to perform an action.

When collecting the measurement data, the collection unit 120 checks whether the reception intensity of the electromagnetic wave signal received through the electromagnetic wave detection unit 111 falls within a reference range when the electromagnetic wave detection unit 111 is determined to be normal. The reference range is 42 mW / m to 70 mW / m, and is set in consideration of the size of the designer and the switchboard and the radiation wave energy sensitivity.

If the received intensity of the received electromagnetic wave signal is within the reference range, the collecting unit 120 determines that the received electromagnetic wave signal is caused by an arc or corona in the switchboard, and thus, the collection of the electromagnetic wave signal detected by the electromagnetic wave detector 111. Collect the frequency as measurement data. On the other hand, if the reception intensity of the received electromagnetic wave signal does not fall within a certain range, the collection unit 120 determines that the received electromagnetic wave signal is caused by the environmental change of the distribution panel, and does not collect the frequency of the corresponding electromagnetic wave signal as measurement data. . In addition, the collection unit 120 notifies the administrator of a change in the installation environment of the electromagnetic wave detection unit 111 through a message or an alarm sound.

The collector 120 determines that the electromagnetic wave detector 111 is abnormally operated when the received intensity of the received reference signal is outside the allowable range, and notifies the manager. That is, since the switchboard 1 according to the present invention includes the reference wave generator 115, whether the installation environment of the electromagnetic wave detector 111 has changed from the initial setting due to contamination caused by vibration and dust generated in the switchboard 1. The installation environment of the switchgear 1 can be checked due to external factors such as the installation of equipment that can act as a radio wave generation source around the switchgear 1.

In addition, the collection unit 120 may be integrated into the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113, and may be manufactured as a single module.

The diagnostic unit 130 is connected to the collection unit 120 by wire or wirelessly to receive the measurement data collected by the collection unit 120 from the collection unit 120. The collection unit 120 measures the measurement data for the detected electromagnetic wave signal only when it is determined that the electromagnetic wave signal detected by the electromagnetic wave detector 111 is an electromagnetic signal due to an arc or a corona generated in the distribution panel. To send).

The diagnostic unit 130 analyzes the electromagnetic wave frequency, the ultraviolet wavelength, and the temperature measured by the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113, respectively, based on the criteria shown in [Table 1]. Diagnose (kind). Here, the discharge forms include corona and series arcs. Ultraviolet wavelength and frequency band of [Table 1] were selected as the band detected when arc or corona occurred through experiment.

Referring to FIG. 3, the diagnosis unit 130 includes a communication unit 131, an input unit 132, a notification unit 133, an output unit 134, a storage unit 135, and a control unit 136.

The communication unit 131 receives measurement data collected from the collecting unit 120 through wired or wireless communication with the communication module of the collecting unit 120. For example, the communication unit 131 performs RS-232 communication.

In addition, the communication unit 131 transmits the diagnosis result diagnosed by the diagnosis unit 130 to the manager terminal through wireless communication under the control of the control unit 136.

The input unit 132 is for user input and is implemented as a keypad or a touch pad.

The alarm unit 133 outputs an alarm sound to the outside depending on whether an arc or corona is generated. In other words, the alarm unit 133 outputs an alarm sound when an arc or corona occurrence is detected, and does not perform an alarm sound output when an arc or corona occurrence is not detected.

The output unit 134 is for outputting measurement data and diagnostic results, and includes a display device and / or a speaker. The display device may be implemented as an LCD, a transparent display, an OLED, an LED display, or the like.

The storage unit 135 stores diagnostic software, measurement data, diagnostic results, and the like for deterioration diagnosis.

The controller 136 controls the operation of each component constituting the diagnosis unit 130, and analyzes the measurement data received through the communication unit 131 to diagnose the discharge form and the generation position.

In addition, the control unit 136 transmits a diagnosis result to the manager terminal through the communication unit 131. Therefore, the manager may monitor in real time whether the measurement temperature (temperature difference between the ambient temperature and the measurement temperature) and the arc or corona are generated through the diagnosis result and the measurement data notified by the diagnosis unit 130.

4 is a flowchart illustrating a method for diagnosing degradation of a switchgear, a motor control panel, and a distribution panel according to the present invention.

Referring to FIG. 4, the electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113 measure minute electromagnetic waves, ultraviolet rays, and temperatures generated from power distribution devices installed in the distribution panel, the motor control panel, and the distribution panel (S101). . The electromagnetic wave detector 111, the ultraviolet ray detector 112, and the temperature detector 113 transmit the measured data to the collector 120. The collector 120 collects the measured data and transmits the measured data to the diagnosis unit 130.

In this case, when the electromagnetic wave signal is detected by the electromagnetic wave detector 111, the collecting unit 120 controls the reference electric wave generator 115 after a predetermined time elapses and the intermediate frequency of the frequency band to which the frequency of the detected electromagnetic wave signal belongs. A reference signal is generated and radiated with a propagation intensity preset for a frequency. The collection unit 120 receives the reference signal generated from the reference wave generator 115 through the electromagnetic wave detector 111 and checks the reception intensity of the reference signal. If the reception intensity of the reference signal is within the allowable range, it is determined that the electromagnetic wave detector 111 is normal. Here, the allowable range is within ± 10% of the generation intensity of the reference signal.

When the electromagnetic wave detection unit 111 is confirmed to be normal, the collection unit 120 confirms the reception intensity of the electromagnetic wave signal detected by the electromagnetic wave detection unit 111. When the received intensity of the detected electromagnetic wave signal is within the reference range, it is determined that the detected electromagnetic wave signal is generated by an arc or corona generated inside the distribution panel, the motor control panel, and the distribution panel, and collects the frequency of the corresponding electromagnetic wave signal as measurement data.

On the other hand, if the received intensity of the detected electromagnetic signal is outside the reference range, the frequency of the electromagnetic wave signal detected by the electromagnetic wave detector 111 is not collected as measurement data.

As described above, the present invention includes the reference wave generating unit 115, and checks whether the electromagnetic wave detecting unit 111 is initially installed due to contamination due to vibration and dust, etc., so that the environment of the distribution panel, the motor control panel, and the distribution panel is maintained. You can see the change. In addition, the present invention can confirm the change in the installation environment due to new external factors, such as the additional switchgear and motor control panel, the addition of equipment that can act as a radio wave generation source around the distribution panel. Therefore, the manager can predict the malfunction of the electromagnetic wave detection unit 111 according to the switchboard, the motor control panel, the distribution panel internal environment change, and the installation environment change in advance and prevent it.

In addition, the reference wave generator 115 may further include a test button externally, and generate a reference signal according to the operation of the button to test a change in the installation environment of the electromagnetic wave detector 111.

The control unit 136 of the diagnosis unit 130 receives measured data transmitted from the collection unit 120 through the communication unit 131, and analyzes the received measured data to diagnose a discharge type (type). (S102) That is, the diagnosis unit 130 selects any one of the diagnosis results of [Table 1] by analyzing the measurement data collected by the collection unit 120.

The controller 136 performs a corresponding operation according to the diagnosis result (S103). When the occurrence of an arc or corona is diagnosed, the controller 136 outputs an alarm sound through the notification unit 133 and transmits a diagnosis result to the manager terminal through the communication unit 131. The diagnosis results include whether discharge is generated and the type of discharge generated.

If the discharge is not detected, the control unit 136 transmits the measured data to the manager terminal through the communication unit 131 and performs the steps S101 to S103 again.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

111: electromagnetic wave detection unit
112: UV detection unit
113: temperature detector
115: reference wave generator
120: collector
130: diagnostic unit

Claims (11)

An electromagnetic wave detector for measuring a frequency of an electromagnetic wave signal emitted by a discharge generated from a power device inside a switchgear;
UV detection unit for measuring the wavelength of the ultraviolet radiation emitted by the discharge generated from the power equipment in the switchboard;
A temperature detector for measuring a temperature inside the switchboard;
A reference radio wave generator for generating a reference signal with an intermediate frequency of a frequency band to which the frequency of the electromagnetic wave signal measured by the electromagnetic wave detector belongs and a radio wave preset for the intermediate frequency;
When receiving an electromagnetic wave signal through the electromagnetic wave detector, after a predetermined time elapses, the reference wave generator generates the reference signal, receives the generated reference signal, and whether the received intensity of the received reference signal is outside the allowable range. A collecting unit for determining whether the electromagnetic wave detecting unit is normal, collecting the frequency of the measured electromagnetic wave signal according to the determination result, and collecting the wavelength and temperature of the ultraviolet ray measured by the ultraviolet detecting unit and the temperature detecting unit;
A switchgear having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor, characterized in that it comprises a diagnostic unit for diagnosing the discharge form by analyzing the measurement data collected by the collection unit. The method of claim 1,
The electromagnetic switch unit having a degradation diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor, characterized in that for measuring the frequency band of 0.1MHz ~ 800MHz. The method of claim 1,
And a UV switch that includes a degradation diagnostic system for monitoring and diagnosing arc and corona discharges by a non-contact composite sensor, characterized in that measuring an ultraviolet wavelength band of 210 nm to 400 nm. The method of claim 1,
The temperature switch is a switchgear having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor, characterized in that implemented by an infrared sensor measuring a temperature range of 10 ℃ ~ 150 ℃. The method of claim 1,
And the allowable range is ± 10% of the propagation intensity. Switchgear having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor. The method of claim 1,
The collecting unit, if the electromagnetic wave detection unit is confirmed to be normal, the degradation diagnosis to monitor and diagnose the arc and corona discharge by the non-contact composite sensor, characterized in that the receiving intensity of the electromagnetic wave signal detected by the electromagnetic wave detection unit is within the standard range Switchgear with system. The method according to claim 6,
The reference range is 42 ㏈㎶ / m ~ 70 ㏈㎶ / m switchgear with a deterioration diagnostic system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor. The method according to claim 6,
The collection unit collects the frequency of the detected electromagnetic wave signal as measurement data if the received intensity of the detected electromagnetic wave signal is within a reference range, and if the received intensity of the detected electromagnetic wave signal is outside the reference range, A switchgear having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharges by a non-contact composite sensor, characterized in that frequency is not collected as measured data. The method of claim 1,
And the discharge type is an arc or corona switchgear having a deterioration diagnosis system for monitoring and diagnosing arc and corona discharge by a non-contact composite sensor. An electromagnetic wave detector for measuring a frequency of an electromagnetic wave signal emitted by a discharge generated from a power device inside the motor control panel;
An ultraviolet detector for measuring a wavelength of ultraviolet rays emitted by a discharge generated from a power device in a motor control panel;
A temperature detector which measures a temperature inside the motor control panel,
A reference radio wave generator for generating a reference signal with an intermediate frequency of a frequency band to which the frequency of the electromagnetic wave signal measured by the electromagnetic wave detector belongs and a radio wave preset for the intermediate frequency;
When receiving an electromagnetic wave signal through the electromagnetic wave detector, after a predetermined time elapses, the reference wave generator generates the reference signal, receives the generated reference signal, and whether the received intensity of the received reference signal is outside the allowable range. A collecting unit for determining whether the electromagnetic wave detecting unit is normal, collecting the frequency of the measured electromagnetic wave signal according to the determination result, and collecting the wavelength and temperature of the ultraviolet ray measured by the ultraviolet detecting unit and the temperature detecting unit;
And a deterioration diagnosis system for monitoring and diagnosing arc and corona discharges by the non-contact composite sensor, comprising: a diagnosis unit for diagnosing a discharge form by analyzing measurement data collected by the collection unit. An electromagnetic wave detecting unit measuring a frequency of an electromagnetic wave signal emitted by a discharge generated from a power device inside the distribution panel;
UV detection unit for measuring the wavelength of the ultraviolet radiation emitted by the discharge generated from the power equipment in the distribution panel,
A temperature detector for measuring a temperature inside the distribution panel;
A reference radio wave generator for generating a reference signal with an intermediate frequency of a frequency band to which the frequency of the electromagnetic wave signal measured by the electromagnetic wave detector belongs and a radio wave preset for the intermediate frequency;
When receiving an electromagnetic wave signal through the electromagnetic wave detector, after a predetermined time elapses, the reference wave generator generates the reference signal, receives the generated reference signal, and whether the received intensity of the received reference signal is outside the allowable range. A collecting unit for determining whether the electromagnetic wave detecting unit is normal, collecting the frequency of the measured electromagnetic wave signal according to the determination result, and collecting the wavelength and temperature of the ultraviolet ray measured by the ultraviolet detecting unit and the temperature detecting unit;
And a deterioration diagnosis system for monitoring and diagnosing arc and corona discharges by a non-contact composite sensor, comprising: a diagnosis unit for diagnosing a discharge form by analyzing measurement data collected by the collection unit.

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