KR102476147B1 - Diagnosis system for switchgear, distribution board, and motor control panel equipped with sensor module capable of detecting busbar temperature and internal complex fire - Google Patents

Abstract

The present invention relates to a diagnosis system for a switchgear, a distribution board, and a motor control panel equipped with a sensor module capable of detecting a busbar temperature and an internal complex fire. The diagnosis system comprises: a main body which has electric power equipment in an inner space and has a door on at least one surface; a busbar which is installed inside the main body, distributes power to the electric power equipment as power is serviced, and is installed at a certain interval for control and protection; a first sensor module which has a certain interval with the busbar, is formed to correspond to each phase of the busbar, includes a plurality of temperature sensors detecting a temperature in a contactless manner, and is formed on an upper end of the main body; a second sensor module which includes a fire detection sensor detecting flames and smoke occurring inside the main body and is formed on the upper end of the main body; a measurement unit which measures an N-E voltage and a current for each phase of the electric power equipment installed inside the main body; and a display unit receives the N-E voltage and the current for each phase of the measurement unit, the temperature of the first sensor module, and the flame information of the second sensor module to diagnose whether power has a problem, deterioration, and an internal fire to transmit a result to the outside. Accordingly, the present invention may prevent deterioration and prevent a fire or power interruption through a change in a temperature for each phase of the busbar.

Description

Diagnosis system for switchgear, distribution board, and motor control panel equipped with sensor module capable of detecting busbar temperature and internal complex fire }

The present invention relates to a switchboard, and more particularly, to a diagnostic system for a switchboard, a switchboard, and a motor control panel having a sensor module capable of detecting the temperature of a busbar and a complex fire in real time, and a sensor module capable of detecting a complex fire inside. will be.

In general, the temperature environment is very important for power facilities and industrial facilities such as switchboards (or water switchboards), transformer facilities, power transmission facilities, motor control panels, and distribution boards.

Most of the high-voltage circuit breakers and low-voltage circuit breakers are installed in the switchboard to protect load devices and circuits from overcurrent and abnormal current. These circuit breakers are electrically connected using a bus-bar and a bus clip for mutual connection and separation, and a bus-bar, a conductive metal material, is applied in consideration of power capacity.

On the other hand, high-voltage and high-capacity busbars and busclips generate heat by Joule heat when energized, and connection resistance may increase due to loosening due to repeated connection and separation.

In general, heating and loss of power devices (e.g., transformers) due to a rise in neutral line current, a rise in neutral line temperature, and a rise in ground voltage due to zero-phase harmonic currents generated from numerous single-phase (non-linear) loads at the end of power devices. As a result of this, there was a risk of power loss, deterioration, and fire.

In addition, a change in contact resistance occurs due to the occurrence of abnormalities such as foreign matter, oxidation, and corrosion on the connection surface, and as a result, damage to power devices due to excessive heat generation may occur. Sometimes it leads to fire, etc., resulting in great property damage.

In addition, when power is cut off as a corresponding measure, a large economic loss is caused by the interruption of an operation facility receiving power, and an unstable power supply may eventually cause a safety accident.

In this way, since the losses or consequences following one small problem in the conventional switchboard are very large and excessive, it is necessary to monitor the switchboard in real time and prevent the occurrence of problems before they occur.

The present invention has been made to solve the above problems, and corresponds to each phase of the busbar arranged at regular intervals at regular intervals, and detects flames including smoke together with a temperature sensor that detects the temperature of each phase. Switchgear, distribution board, and motor control panel equipped with sensor modules that can detect busbar temperature and internal composite fire detection by placing sensor modules with detection sensors on the upper part of the main body to detect busbar temperatures and complex fires in real time Its purpose is to provide a diagnostic system for

In order to achieve the above object, the diagnosis system of a switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to the present invention has power devices in an internal space and has a door on at least one side thereof. A main body, a busbar installed inside the main body, and installed at regular intervals for power distribution, control, and protection to the power equipment system after power is introduced, and each of the busbars while having a regular interval with the busbar. A first sensor module configured on the top of the body including a plurality of temperature sensors configured to correspond to the phase and detecting temperature in a non-contact manner, and a fire detection sensor for detecting flame and smoke generated inside the body A second sensor module configured at the top of the main body, a measuring unit for measuring the current and N-E voltage for each phase of the power device installed inside the main body, and the current and N-E voltage for each phase of the measuring unit and the first It is characterized in that it is configured to include a display unit that receives the temperature of the first sensor module and the flame information of the second sensor module, diagnoses power abnormalities, deterioration, and internal fire, and transmits the results to the outside.

The diagnosis system of a switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to an embodiment of the present invention has the following effects.

First, a sensor module equipped with a fire detection sensor for detecting a flame including smoke along with a temperature sensor for detecting the temperature of each phase while corresponding to each phase of the busbar arranged at regular intervals at regular intervals is installed on the upper part of the main body. By arranging it, the temperature of the busbar and complex fire can be detected in real time.

Second, it is possible to prevent deterioration in advance through the temperature change of each phase of the busbar and to prevent a fire or power interruption.

Third, by detecting the current and N-E voltage for each phase of the power device, it is possible to diagnose imbalance diagnosis and power factor and association by occurrence of unbalance through calculation of current loss.

Fourth, by detecting the N-phase current (neutral line current), imbalance diagnosis and image harmonic current generation can be diagnosed.

Fifth, it is possible to control the fan by estimating the heating value of the power device through temperature detection and correction of the power device (eg, transformer).

1 is a front view showing a high-voltage panel among diagnosis systems of a switchboard, distribution panel, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to an embodiment of the present invention.
Figure 2 is a configuration diagram showing the internal configuration of the high pressure plate of Figure 1
3 is a configuration diagram for explaining a diagnosis system of a switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal complex fire according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

1 is a front view showing a high-voltage panel among diagnostic systems of a switchboard, distribution panel, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to an embodiment of the present invention, and FIG. 2 is a front view of the high-voltage panel of FIG. It is a diagram showing the internal structure.

As shown in FIGS. 1 and 2, the diagnosis system of a switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to an embodiment of the present invention has a hexahedron shape and a transformer in the internal space. A main body 110 equipped with a power device including a front door 111 and a rear door 112 on the side and installed inside the main body 110, power is introduced and distributed to the power device system, R, S, T, N phase busbars 120 installed at regular intervals for control and protection, and busbars 120 of R, S, T, N phases and each phase having a regular interval 120 and a plurality of temperature sensors 131 for detecting temperature in a non-contact manner and a fire detection sensor 132 for detecting flames and smoke generated inside the main body 110, and the main body ( 110) and the sensor module 130 configured at the upper end, the reflector 140 configured at the left and right lower ends inside the body 110 to reflect the arc generated in the blind spot inside the body 110, respectively; A measuring unit 150 for measuring the voltage and current of the R phase, S phase, T phase, N phase current (neutral current), and N-E voltage of the power device installed inside the main body 110, and the R phase of the measuring unit 150 , S-phase, T-phase voltage and current, N-phase current, N-E voltage, temperature and flame information of the sensor module 130, and a display unit 160 that diagnoses power quality and internal fire and transmits the result to the outside And, it is configured to include a management server 170 for monitoring the information transmitted through the display unit 160.

Here, the temperature sensor 131 installed in the sensor module 130 is installed to correspond to the R, S, T, and N phases of the bus bar 120, respectively, so that the temperature of each phase can be detected. On the other hand, when installed in the high-voltage part of the switchgear, the busbar 120 has an interval of 300 mm, and each phase is spaced apart.

Accordingly, the temperature sensors 131 of the sensor module 130 are also installed at intervals of 300 mm. At this time, the temperature sensors 131 may be installed in a one-to-one correspondence to each phase, but the temperature of the busbar 120 may be more accurately detected by installing two on each phase of the busbar 120.

Meanwhile, although the sensor module 130 has been described as including the temperature sensor 131 and the fire detection sensor 132 integrally, the sensor module 130 is not limited thereto and the temperature sensor 131 is provided. A first sensor module and a second sensor module having a fire detection sensor 132 may be separated and installed on top of the main body 110, respectively.

Additionally, a temperature detection sensor for detecting the temperature of the transformer may be configured.

The main body 110 is composed of a front side space part and a rear side space part based on the frame of the center, a front door 111 is installed on the front part of the front side space part, and a rear door 112 is installed on the rear part .

Each of the front door 111 and the rear door 112 is equipped with a locking device to prevent safety accidents by preventing doors from being opened by persons other than those involved. At this time, the locking device registers the biometric information of the person concerned in advance for safety, so that no one other than the person concerned can open the door.

In addition, a front safety door is further provided inside the front door 111 .

In the front door 111, control circuits such as receiving and distributing power conditions in the switchboard, operation buttons of circuit breakers, and protective relays are installed, and the front door 111 is often opened to check the control circuit. do.

The front safety door is to prevent contact with the connection part installed inside when the front door 111 is opened, and is made of a metal panel as a whole, but the main part is provided with a transparent window so that it can be visually confirmed.

Accordingly, by opening the front door 111, the user can visually check the main connection part through the transparent window provided in the front safety door while preventing safety accidents by the front safety door.

A temperature detector 180 may be additionally installed inside and outside the main body 110 to detect temperatures, respectively, which is based on the temperature of the inside and outside of the main body 110, rather than the inside of the main body 110. It is to detect the abnormal state of

In addition, when the main bodies 110 are installed on multiple surfaces at regular intervals from each other or in a plurality of different spaces, the internal and external temperatures of the neighboring main bodies 110 are compared to each other to obtain a relatively high temperature main body 110. ), it is possible to more quickly determine the presence or absence of abnormalities through comparative analysis.

In addition, in order to detect the vibration of the body 110, a vibration sensor 190 may be additionally installed inside the body 110. At this time, the vibration sensor 190 is for detecting vibrations generated by screw loosening or an earthquake with respect to various electrical equipment.

Power received through the inlet installed at the top of the main body 110 is connected to a load breaker switch (LBS) (not shown).

The load switch is connected to a bus power line connected through a bushing penetrating the main body 110 and performs a function of opening or energizing power in a no-load state. That is, when a predetermined current is input, cut off, and energized in a live wire state, and an abnormal current flows in the circuit in a short-circuit state, it can be energized for a specified time. can't

Accordingly, the fault current uses a power fuse and is employed for the purpose of preventing phase loss when the fuse is blown. When the load switch has a three-phase load, it is preferable to use a power fuse combined with a three-pole load switch with a trip device.

A disconnecting switch (DS) may be installed instead of the load switch. The disconnector (DS) is for temporarily disconnecting the circuit from power for device inspection, and should never be operated in a live wire state.

The reason is that when opening the knife switch, an arc is generated between the blade and the clip of the switch, and the space is ionized by the arc, resulting in a three-phase short circuit. because there is

A power factor correction unit (not shown) may be installed at the front end of the busbar 120 in parallel to compensate for the phase difference between voltage and current to improve the power factor.

On the other hand, in the embodiment of the present invention, it is possible to diagnose the effect of the image harmonic current by detecting the neutral current flowing through the busbar and the N-phase of the power facility through the measuring unit 150 without detecting a separate harmonic current. there is a number

That is, by detecting the neutral current flowing in the N phase in the measuring unit 150, it is possible to diagnose whether or not the neutral line zero sequence harmonic current of the N-E voltage is affected along with the detection of the neutral line abnormality.

In general, power loss and deterioration occur due to heating and loss of the transformer due to a rise in neutral line current, a rise in neutral line temperature, and a rise in ground voltage due to zero-phase harmonic currents generated from numerous single-phase (non-linear) loads at the end of the power equipment. , may result in a risk of fire. On the other hand, the present invention can prevent risks such as power loss, deterioration, and fire by measuring the current of R, S, and T phases and the N-phase current together with diagnosing the effect of the image harmonic current in advance.

As shown in FIG. 3, the diagnosis system of a switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal composite fire according to the present invention includes a temperature sensor 131, a fire detection sensor 132, Diagnosis and monitoring are performed using information detected through the measurement unit 150, the temperature detection unit 180, and the vibration detection unit 190.

The temperature sensor 131 is configured at regular intervals to correspond to the R phase, S phase, T phase, and N phase of the bus bar 120, respectively, and detects the temperature of each phase.

The temperature sensor 131 is configured to be spaced apart from each phase of the busbar requiring temperature monitoring at regular intervals, so that temperature monitoring and diagnosis module 160 is transmitted according to temperature change.

The fire detection sensor 132 detects the concentration of at least one gas among smoke, for example, CO, CO ₂ , C ₂ H ₄ , and HCL. On the other hand, in order to more easily detect the smoke, a suction fan is provided and the suction fan is driven to suck air inside the main body 110 to detect the gas concentration contained in the air.

The suction fan is driven periodically for the flow of smoke to suck smoke generated inside to detect the concentrations of CO, CO ₂ , C ₂ H ₄ , and HCL contained in the smoke. In this case, the suction power is automatically improved so that the current status can be monitored, judged, and predicted.

In addition, the fire detection sensor 132 detects a flame, and includes a lens to increase the angle of view of the flame.

That is, the fire detection sensor 132 includes a reference detection unit for more accurate detection when detecting a flame. The reference detection unit malfunctions in advance to prevent malfunction of flame detection due to the human body or radiant heat waves. It works for prevention. The flame exhibits unique combustion characteristics from the initial occurrence of fire, and among these characteristics, there are different wavelength bands of ultraviolet rays and infrared rays that cannot be distinguished with the naked eye. It detects ultraviolet and infrared flames and arcs by combining an ultraviolet sensor that detects ultraviolet wavelength characteristics emitted from flames and arcs and an infrared sensor that detects infrared wavelength characteristics.

Since the fire detection sensor 132 detects only a specific wavelength band by the reference detection unit, it is possible to detect only fire by minimizing false operation detection due to detection of various light sources around, and to increase the angle of view through a lens (not shown). ) is provided.

The display unit 160 includes a temperature correction unit 161, a temperature reference value correction unit 162, a loss calculation unit 163, first and second diagnosis units 164 and 165, a control unit 166, and a communication unit 167. ) and an image harmonic current calculator 168.

Here, the temperature reference value correction unit 162 receives the temperature information of the R phase, S phase, T phase, and N phase detected through the temperature sensor 131 and corrects the reference value. In addition, the temperature reference value is corrected by reflecting the external temperature detected by the temperature detector 180 .

Equations 1 to 4 below are equations showing protection level correction values for the main body, transformer, busbar, and circuit breaker in consideration of external temperature.

[Equation 1]

T _{in_revision} =T _{in_limit} + α _in (T _out -25℃)

[Equation 2]

T _{tr_revision} =T _{tr_limit} + α ₁ T _{in_revision} + β ₁ I _r,s,t + γ ₁ I _Distortion

[Equation 3]

T _{bus_revision} =T _{bus_limit} + α ₂ T _{in_revision} + β ₂ I _r,s,t + γ ₂ I _Distortion

[Equation 4]

T _{CB_revision} =T _{CB_limit} + α ₃ T _{in_revision} + β ₃ I _r,s,t + γ ₃ I _Distortion

here, T _{in_limit} is the body temperature protection level value at the reference temperature, T _{tr_limit} is the transformer temperature protection level value at the reference temperature, T _{bus_limit} is the busbar temperature protection level value at the reference temperature, T _{CB_limit} is the circuit breaker (LBS at the reference temperature) , ACB, MCCB, etc.) indicate each temperature protection level value.

In addition, T _{in_revision} is the body protection level revision value considering the external temperature, T _{tr_revision} is the transformer temperature protection level revision value considering the external temperature, T _{bus_revision} is the busbar protection level revision value considering the external temperature, and T _{CB_revision} is the external temperature consideration consideration. Each circuit breaker (LBS, ACB, MCCB, etc.) protection level modification value is indicated.

In addition, α _in is the temperature correction coefficient according to the body material and type and cooling structure, α ₁ is the temperature correction coefficient according to the transformer material and type, α ₂ is the temperature correction coefficient according to the busbar material and type, and α ₃ is the circuit breaker ( LBS, ACB, MCCB, etc.) temperature correction coefficient according to material and type.

In addition, β ₁ is the estimated temperature correction coefficient for loss according to the current flowing in the transformer, β ₂ is the temperature correction coefficient for estimating loss according to the current flowing in the busbar, and β ₃ is the loss according to the current flowing in the circuit breaker (LBS, ACB, MCCB, etc.) is the estimated temperature correction factor.

At this time, if each device is connected in series, the number of I _r,s,t measurements can be reduced.

On the other hand, in the embodiment of the present invention, although measuring only the N-phase current is described as a key point, the zero-phase harmonic current can be more accurately diagnosed by measuring the R, S, and T-phase currents without being limited thereto.

In addition, γ ₁ is the temperature correction coefficient for estimating loss according to the zero-phase harmonic current flowing in the transformer, γ ₂ is the temperature correction coefficient for estimating loss according to the zero-phase harmonic current component flowing in the busbar, and γ ₃ is the temperature correction coefficient for estimating the loss according to the zero-phase harmonic current flowing in the busbar. It is the temperature correction coefficient for estimating the loss according to the component of the flowing image harmonic current.

In addition, I _r,s,t are current values flowing in each phase in the switchboard (each phase or average can be used), and I _Distortion is the zero-phase harmonic current component flowing in the switchboard.

In addition, T _in represents the measured temperature inside the main body, and T _out represents the measured temperature outside the main body.

On the other hand, although the embodiment of the present invention describes the temperature correction values of the internal and external temperatures of the main body, busbars, switches, etc., it can be applied to major devices to be protected such as CTs, PTs, and condensers.

The loss calculation unit 163 receives the voltage and current of the R phase, S phase, T phase, N phase current, and N-E voltage of the power device detected through the measurement unit 150 and calculates the current loss amount.

The first diagnosis unit 164 receives data from the temperature reference value correction unit 162 and the loss calculation unit 163 and determines whether there is a power abnormality.

In addition, the first diagnosis unit 164 may diagnose the zero-phase harmonic current by receiving the N-phase current measured by the measurement unit 150 .

The second diagnosis unit 165 transmits flame and smoke information of the fire detection sensor and vibration information of the vibration detection unit 190 together with data from the temperature reference value correction unit 162 and the loss calculation unit 163. receive and diagnose the deterioration of each phase and the internal fire of the main body.

The control unit 166 receives the diagnosis result of the first diagnosis unit 164 and the second diagnosis unit 165 and generates an alarm and a blocking signal.

The communication unit 167 transmits diagnosis results of the first diagnosis unit 164 and the second diagnosis unit 165 to the outside.

The first and second diagnostic units 164 and 165 receive and diagnose the temperature, N-E voltage, voltage and current, flame and smoke information data of each phase, and manage the diagnosis result through the communication unit 167. It performs a function of transmitting to the server 170.

The second diagnosis unit 165 receives temperature information detected from the temperature sensor 131 and analyzes the received temperature information to detect deterioration.

In addition, the second diagnosis unit 165 may be configured to transmit the determined temperature state to a display for display or to transmit an alarm to a manager's mobile device when deterioration is detected.

The first and second diagnostic units 164 and 165 diagnose abnormal power quality or fire in the switchboard according to the request of the management server 170 or the diagnosis result of the first and second diagnostic units 164 and 165. In this case, the work or sleep state of the communication unit 167 may be controlled to transmit information on temperature, flame, voltage, and current to the management server 170 . Accordingly, it is possible to reduce unnecessary data consumption of the communication unit 167 to reduce communication costs and to prevent battery consumption in advance.

The second diagnosis unit 165 can diagnose deterioration and internal fire using the temperature, current, and neutral wire current for each phase of the busbar detected by the temperature sensor 131 .

Due to this, the management server 170 comprehensively performs deterioration, power quality, fire, and safety diagnoses to prevent electrical accidents in advance.

On the other hand, the communication unit 167 is equipped with an encryption module (not shown) to encrypt the information of the first and second diagnostic units 164 and 165 and transmits the information to the management server 170, thereby preventing a third party from Hacking can be prevented.

The zero-phase harmonic current calculation unit 168 receives the N-phase current measured by the measurement unit 150 and calculates the zero-phase harmonic current by adding or subtracting an unbalanced current generated in the actual N-phase.

The first diagnosis unit 164 receives data from the zero-phase harmonic current of the harmonic zero-phase current calculation unit 168 and the temperature reference value correction unit 162 and the loss calculation unit 163, and determines whether or not there is a power abnormality including harmonic effects. judge

That is, the first diagnosis unit 164 diagnoses harmonic effects including whether or not the image harmonic current is generated by the image harmonic current calculation unit 168 and the effect of the neutral wire temperature rise and N-E ground rise due to harmonics, and the neutral wire current Power abnormality diagnosis such as measurement, unbalance abnormality, ground voltage abnormality by N-E voltage measurement can be performed simultaneously.

Meanwhile, the magnitude (In) of the unbalanced current flowing through the neutral line (N) in the three-phase, four-wire system can be expressed by Equation 5 below.

[Equation 5]

Here, IR is the current flowing in the _R phase, IS is the current flowing in the _S phase, and I _T is the current flowing in the T phase.

Therefore, when the current flowing in the N phase is measured and added to or subtracted from the unbalanced current calculated by Equation 5 above, the zero-phase harmonic current can be finally obtained, which can be expressed by Equation 6.

[Equation 6]

Phase Harmonic Current = Neutral Current - Unbalanced Current

On the other hand, in the embodiment of the present invention, although it is described that a separate harmonic measurement unit is not disclosed, a harmonic measurement unit (not shown in the drawing) is added to measure harmonics for each phase of the busbar for more accurate harmonic measurement. can also be configured.

That is, the harmonic influence can be more accurately diagnosed by linking the harmonic measurement value measured through the harmonic measurement unit with the image harmonic current.

The display unit 160 is configured to interwork with a smartphone carried by an external manager via Wi-Fi or Bluetooth. Information stored in the display unit 160 may be received. At this time, information acquired using the smartphone may be automatically transmitted to the management server 170 .

The display unit 160 is attached to and installed on the front of the front door 111 so that a manager can check the obtained information, the vibration data detected by the vibration sensor 190, and the temperature sensor 131 The temperature of the R phase, S phase, T phase, and N phase detected through, the voltage and current of the R phase, S phase, and T phase of the power device detected through the measurement unit 150, the current of the N phase, N-E voltage data, Data calculated through the temperature reference value correction unit 161 and the loss calculation unit 163, including flame and smoke data detected through the fire detection sensor 132, and the first and second diagnosis units 164, 165) to further include a storage unit (not shown) for storing result data diagnosed.

Meanwhile, the present invention has been described above using several preferred examples, but these examples are illustrative and not restrictive. Those skilled in the art to which the present invention pertains will understand that various changes and modifications can be made without departing from the spirit of the present invention and the scope of rights set forth in the appended claims.

110: main body 120: bus bar
130: sensor module 140: reflector
150: measurement unit 160: display unit
170: management server

Claims (17)

A main body having a power device in an inner space and having a door on at least one surface;
Busbars installed inside the main body and installed at regular intervals for power distribution, control, and protection to a power equipment system after power is introduced;
A first sensor module configured on the top of the main body including a plurality of temperature sensors configured to correspond to each phase of the busbar and detecting temperature in a non-contact manner while having a regular interval from the busbar;
A second sensor module configured on the top of the main body including a fire detection sensor for detecting flame and smoke generated inside the main body;
A measuring unit for measuring the current and NE voltage for each phase of the power device installed inside the main body;
A display unit that receives the current and NE voltage for each phase of the measurement unit, the temperature of the first sensor module, and the flame information of the second sensor module, diagnoses power abnormality, deterioration, and internal fire, and transmits the result to the outside. Wow,
It is configured to include a management server that monitors information transmitted through the display unit, and the display unit
a zero-phase harmonic current calculation unit that receives the N-phase current of the measuring unit and diagnoses the zero-phase harmonic current by adding or subtracting an unbalanced current generated in the actual N-phase;
a temperature reference value correction unit for receiving temperature information of the temperature of each phase detected through the temperature sensor and correcting a reference value;
A loss amount calculation unit for receiving the current for each phase of the busbar detected through the measurement unit and calculating a current loss amount;
a first diagnostic unit receiving the image harmonic current of the image harmonic current calculation unit and data from the temperature reference value correcting unit and the loss calculation unit and determining whether or not there is a power abnormality including harmonic effects;
A second diagnosis unit for diagnosing phase-by-phase deterioration and internal fire of the main body by receiving flame, smoke information, and vibration information of the fire detection sensor along with data from the temperature reference value correction unit and loss calculation unit;
A control unit receiving the diagnosis results of the first diagnosis unit and the second diagnosis unit and generating an alarm and blocking signal;
a communication unit for transmitting diagnosis results of the first diagnosis unit and the second diagnosis unit to the outside;
The temperature reference value correction unit and the temperature reference value correction unit, including the temperature of each phase of the busbar detected through the temperature sensor, the voltage and current of the power device detected through the measurement unit, and flame and smoke data detected through the fire detection sensor A storage unit for storing the data calculated through the loss calculation unit and the result data diagnosed through the first and second diagnosis units,
A temperature detection unit installed inside and outside the main body to detect temperatures, respectively, and a temperature correction unit for correcting a reference value of the temperature detected through the temperature detection unit,
A temperature detection sensor for detecting the temperature of a transformer among the power devices and a vibration detector for detecting vibration occurring in the main body,
The first and second diagnostic units control the work or sleep state of the communication unit when there is a problem in power quality or fire diagnosis in the switchboard according to a request from the management server or a diagnosis result of the first and second diagnostic units. Send information about temperature, flame, voltage and current to the server,
The temperature reference value correction unit receives the corrected temperature information through the temperature correction unit and corrects the temperature reference value together with the temperature of each phase. , the diagnostic system of the motor control panel. delete delete The switchgear of claim 1, wherein the communication unit is equipped with an encryption module to encrypt the information of the first and second diagnostic units and transmit the information to the outside. , distribution panel, diagnostic system in motor control panel. delete delete delete delete delete The method of claim 1, wherein the fire detection sensor is provided with a suction fan to more easily detect smoke and drives the suction fan to suck air inside the main body to detect the gas concentration contained in the air. Diagnosis system of switchgear, distribution board, and motor control panel equipped with a sensor module capable of detecting busbar temperature and internal complex fire. The diagnosis system of switchgear, distribution board, and motor control panel having a sensor module capable of detecting busbar temperature and internal complex fire according to claim 1, wherein the fire detection sensor includes a lens to increase the angle of view. delete delete delete delete The method of claim 1, wherein the magnitude (In) of the unbalanced current is calculated by the following Equation 1, and the zero-phase harmonic current is calculated by the following Equation 2. Diagnosis system for switchgear, distribution panel, and motor control panel equipped with possible sensor modules.
[Equation 1]

Here, IR is the current flowing in the _R phase, IS is the current flowing in the _S phase, and I _T is the current flowing in the T phase.
[Equation 2]
Phase Harmonic Current = Neutral Current - Unbalanced Current delete

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