KR102525899B1 - Switchboard accident total administration system using integrated sensor - Google Patents

Abstract

Disclosed is a total switchgear accident management system using an integrated sensor, comprising: an integrated sensor comprising an arc and fire sensor that detects arcs and fires occurring inside a switchgear using an integral calculation technique, a temperature sensor that measures the temperature of a specific area inside the switchgear or around the switchgear in a non-contact manner, a noise sensor that detects noise from the switchgear, and a vibration sensor that detects the vibration of the switchgear; a conduction sensor that detects conduction in the switchgear; a control device that processes signals detected by the integrated sensor and conduction sensor; and a data communication device that allows a remote control center to monitor and control the switchgear based on the detected signal transmitted from the control device of the switchgear. The conduction sensor comprises: a case in which a certain space is formed inside; a first conductive member that conducts at a set angle in conjunction with the conduction of the switchgear; and a second conductive member that limits the movement range of the first conductive member so that the first conductive member conducts at a set angle. Accordingly, when an abnormality is detected, measures can be taken to maintain the normal operation of the switchgear.

Description

Switchboard accident total management system using integrated detection sensor {SWITCHBOARD ACCIDENT TOTAL ADMINISTRATION SYSTEM USING INTEGRATED SENSOR}

The present invention relates to a total accident management system for switchgear using an integrated detection sensor.

In more detail, the present invention constantly detects the states of arc, fire, temperature, noise, vibration, conduction, etc., which are typical abnormal phenomena of switchgear, with an integral sensor, so that individual elements are selectively processed or at least two or more elements are By combining and processing, it is possible to diagnose the abnormality of the switchgear, record, store, and analyze the diagnosis result, so that even if it is not an accident, the degree of risk exposure, deterioration, or remaining life of the switchgear can be predicted, and in the event of an accident, the first alarm, This is to prevent accidents and minimize the spread of accidents by shutting off the secondary main power.

In general, switchgear refers to a facility that receives power from a power supplier and distributes it by stepping up or stepping up the voltage to suit the consumer or accommodation facility.

Power devices housed in such switchboards deteriorate over time, and consequently, contact failure, insulation breakdown, and the like occur.

In addition, when dust or foreign matter accumulates on the conductor due to insufficient maintenance, the risk of poor insulation or electrical accidents increases. At this time, signs of accidents such as arcs, overheating, and noise appear.

In addition, when severe vibration and conduction conditions caused by cracks in the ground due to natural disasters such as earthquakes are left unattended for a long time, the normal operation of the switchgear is disturbed, as well as the risk of accidents increases.

Therefore, as described above, it is necessary to appropriately manage the internal and external conditions of the switchgear.

Korean Patent Registration No. 10-1070832 detects an arc signal and a tracking signal through an ultraviolet sensor that detects ultraviolet rays generated in the switchgear and a current sensor that measures the tracking current of a live wire, performs sampling with anti-aliasing applied, and the sampling Digital filtering is performed on the filtered signals using a digital finite impulse response low-pass filter, and a peak size and peak frequency are calculated by performing a fast Fourier transform operation on the digitally filtered signals. It calculates unique detection elements for the arc signal and tracking signal, checks whether the calculated detection elements are out of the set range, diagnoses whether arc and tracking have occurred, and inputs them to the pulse transformer voltage and current sensor of the UV sensor. Self-diagnosis of sensor performance is performed by periodically measuring the voltage level of the signal to be transmitted, and the diagnosis result and the self-diagnosis result are transmitted to a remote monitoring device using a predetermined communication method. Discloses an anomaly detection method of.

This prior art detects arc and tracking signals using a UV sensor and a current sensor, detects the arc and tracking through fast Fourier transform and stochastic statistical analysis of the detected signals, and performs the performance of the UV sensor and the current sensor. While there is an advantage in diagnosing the occurrence of abnormalities such as arcing and tracking by periodically testing and monitoring the status of switchgear in real time, there is a problem limited to the prevention method for preventing fires caused by arcs.

Korean Patent Registration No. 10-0931992 discloses a Q-N matrix technique that maps the size and number of pulses generated by a PD sensor placed at an arbitrary location in a power device to the risk level area of a matrix structure in which the characteristics of defect information are reflected. to determine an abnormal state related to insulation deterioration of the power device, identify a temperature conversion element that varies depending on the characteristics of the temperature measurement object and the temperature sensor disposed in the power device, and determine the voltage value measured by the temperature sensor based on this Detects the PD (Partial Disharge) signal generated inside the switchgear of power equipment in operation, evaluates the risk of insulation deterioration, and detects abnormal temperature rise Disclosed are a switchgear system and method for self-diagnosing an abnormal state, and a computer readable recording medium.

This prior art has the advantages of increasing diagnosis reliability, significantly lowering manufacturing cost, and rapidly diagnosing abnormal conditions related to temperature by precisely analyzing abnormal temperatures frequently occurring in power devices by precisely analyzing abnormal conditions related to insulation deterioration. On the other hand, there is a limit in that it is impossible to cover more various abnormal elements by observing the abnormality of the switchgear only in the temperature.

1. Korean Patent Registration No. 10-1070832 2. Korean Patent Registration No. 10-0931992

The present invention detects the typical abnormal phenomena of the switchgear, such as arc, fire, temperature, noise, vibration, conduction, etc., with an integral sensor at all times, so that when an abnormality is detected, measures can be taken to maintain the operation of the switchgear normally. The purpose is to provide a total accident management system for switchgear using detection sensors.

Another object of the present invention is to determine the normality of the switchgear by considering the importance of the sensing element, as well as to determine the normality of the switchgear more accurately by associating various sensing elements with each other. Its purpose is to provide a total accident management system for switchgear.

Another object of the present invention is to provide a total accident management system for a switchboard using an integrated detection sensor, in which a conduction sensor having a simple structure is installed inside the switchgear to easily determine the conduction angle and conduction direction of the switchgear. There is a purpose.

Other objects of the present invention will be sufficiently inferred as described below.

In order to achieve the above object, the accident total management system of the switchgear using the integrated detection sensor of the present invention,

Arc and fire detection sensors that detect arcs and fires generated inside switchgear by integral operation method;

a temperature sensor that measures the temperature in a specific area inside the switchboard or around the switchboard in a non-contact manner;

a noise sensor for detecting noise of the switchgear;

a vibration sensor for detecting vibration of the switchgear;

a conduction sensor that detects conduction of the switchgear;

a control device for processing signals sensed by the integral detection sensor and the conductivity sensor; and

It consists of a data communication device that allows a remote control center to monitor and control the switchgear based on the detection signal transmitted from the control device of the switchgear,

The conductivity sensor

A case in which a certain space is formed therein;

a first conductive member that is conducted at a set angle in conjunction with the conduction of the switchgear;

and a second conductive member limiting the flow range of the first conductive member so that the first conductive member is conducted at a set angle.

In the present invention, it is characterized in that the control device performs calculation processing only when the result detected by the arc and fire detection sensors exceeds 15 Joule/cm 2 of generated energy.

In the present invention, only when the energy detected by the arc and fire detection sensors exceeds a preset output setting value, the control device operates a relay included in the switchboard to open an alarm alarm or main power, but the output setting value is 59 Joule/cm 2 larger, but characterized as adjustable.

In the present invention, the control device accumulates data by storing and recording the sensing data of the integral detection sensor and the conduction sensor in the form of a graph or list, predicts the degree of exposure to danger, deterioration or remaining life of the switchgear, and determines the result It is characterized by preventing accidents and minimizing the spread of accidents through the primary alarm and the secondary main power cut-off.

In the present invention, it is characterized in that a plurality of first conductive members are configured to be movable in four directions in order to determine the conduction direction of the switchgear.

In the present invention, the first conductive member is characterized in that the conduction angle range changes according to the vertical flow of the second conductive member.

In the present invention, the second conductive member is connected to the conduction angle adjusting member through a metal wire, and the conduction angle adjusting member moves up and down in a tightened or loosened manner so that the conduction angle sensing range of the first conductive member is adjusted characterized by

According to the accident total management system of the switchboard using the integrated detection sensor of the present invention, the operation of the switchboard is maintained normally when an abnormality is detected by constantly detecting the status of arc, fire, temperature, noise, vibration, conduction, etc. with the integrated detection sensor. so that action can be taken.

In addition, considering the importance of the sensing element, it is possible to determine whether the switchgear is normal or not, as well as to determine whether the switchgear is normal or not by correlating various sensing elements with each other.

In addition, a conduction sensor having a simple structure is installed inside the switchgear to easily determine the conduction angle and conduction direction of the switchgear.

1 is a networking configuration diagram of a total accident management system for switchgear using an integrated detection sensor according to a first embodiment of the present invention.
2 is a control configuration diagram of the switchgear in FIG. 1;
Figure 3 is a signal processing flow chart of the arc and fire detection sensor of Figure 2;
4 is a control configuration diagram of the arc and fire detection sensors of FIG. 2;
5 is a signal processing flow chart of the temperature sensor of FIG. 2;
6 is a signal processing flowchart of the noise sensor of FIG. 2;
7 is a signal processing flow chart of the vibration sensor of FIG. 2;
8 is a control configuration diagram of an accident management system configured with a conduction sensor according to a second embodiment of the present invention.
9 is a cross-sectional view of the conductivity sensor shown in FIG. 8;
10 is a cross-sectional view of a conductivity sensor according to another embodiment of the second embodiment of the present invention.
11 is a cross-sectional view of a conductivity sensor according to a third embodiment of the present invention.
12 is a diagram showing the principle of operation of the conductivity sensor shown in FIG. 11;

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]

1 is a networking configuration diagram of a total management system for switchgear accidents using integrated detection sensors according to a first embodiment of the present invention. FIG. 2 is a control configuration diagram of the switchgear in FIG. 1 . FIG. 3 is a signal processing flow chart of the arc and fire detection sensors of FIG. 2 . 4 is a control configuration diagram of the arc and fire detection sensors of FIG. 2 . 5 is a signal processing flow chart of the temperature sensor of FIG. 2 . 6 is a signal processing flow chart of the noise sensor of FIG. 2 . 7 is a signal processing flow chart of the vibration sensor of FIG. 2 .

As shown in FIG. 1, the system of the present invention, in a state where the switchboard (control device) and the control center 20 are networked through the wired and wireless Internet network (N), the control device and/or the control center of the switchboard (10) The arc, fire, temperature, noise, vibration, and conduction state are judged through the control device configured in (20), and appropriate measures are taken, such as warning or power-off to stop the operation of the switchboard (10).

The switchgear 10 detects arc, fire, temperature, noise, vibration, and conduction state to enable its own control such as cutting off power, and the control center 20 also detects the transmission from the switchgear 10. Based on the signal, it is configured to be able to cut off the power of the switchgear 10 by remote control.

In addition, the control device stores and records the sensing data of the integrated detection sensor and the conduction sensor in the form of a graph or list to accumulate data, predicts the degree of exposure to danger, deterioration or remaining life of the switchgear, and according to the judgment result, It prevents accidents and minimizes the spread of accidents through car alarms and secondary main power cutoff.

The control center 20 may be a server configured in a remote location or may be a manager's smart phone. In addition, the control center 20 and the smart phone are networked through a wireless Internet network so that the detected value can be transmitted from the control center 20 to the smart phone, so that the manager can control the operation of the switchgear 10 anytime, anywhere. there is.

As shown in FIG. 2 , the total accident management system for switchgear using the integrated detection sensor according to the first embodiment of the present invention includes a switchgear controller 10 and a control center 20 .

The switchgear control device 10 includes an arc detection sensor 11, a fire detection sensor 12, a temperature detection sensor 13, a noise detection sensor 14, a vibration detection sensor 15, a conductivity sensor 16, a display It is configured to include a unit 21, a memory unit 22, a calculation unit 23, an alarm unit 24, an output unit 25, and a communication unit 26.

The control device 10 drives a program to diagnose the status of the switchgear based on the arc, fire, temperature, noise, vibration, and conduction values transmitted from the sensors, and based on this, real-time arc values, fire values, temperature values, Calculate noise, vibration, and conduction values.

The arc detection sensor 11 and the fire detection sensor 12 detect whether an arc and a fire occur inside the switchboard, and may be non-contact type optical arc and fire detection sensors. The optical arc/fire detection sensor may include a light receiving element that outputs an electrical signal having a magnitude corresponding to the intensity of the incident light signal when an optical signal caused by an arc or fire is incident. The optical arc and fire detection sensor may further include an optical system capable of adjusting the light amount of the light signal incident on the light receiving element and the incident angle of the light signal incident on the light receiving element.

As shown in FIGS. 3 and 4, when arc or flame energy is detected, this detected value is input to the integral operation sensor circuit and subjected to integral operation processing, and the processed value is converted into a voltage value and stored in a buffer, MCU After processing the data stored in the buffer, it is sent to the CPU for final processing.

The finally processed arc and fire detection values are transmitted to the control center 20, and the state of the switchgear is determined based on the detected arc and fire values.

The arc detection sensor 11 is configured to have a detection angle of 120° or more so as to detect the entire inside of the switchgear, and is preferably configured to detect arc energy of 15 Joule/cm 2 or more, and is 16 msec or less faster than one cycle of commercial power. It is desirable to have a detection time of . The arc detection sensor 11 may detect whether an arc is generated by using a wavelength range of 800 to 900 nm among the wavelength components of the arc light.

As shown in FIG. 4 , the arc detection sensor 11 may include a light receiving unit, an integration operation unit, and a signal processing unit.

The light receiving unit converts the incident light into an electrical signal, specifically, into an electrical signal in the form of a current, and outputs the incident light. The electrical signal in the form of current output from the light receiver is converted into a form of voltage and transmitted to the integral operator.

The integration operation unit performs an integration operation on the arc energy by performing an integration operation on the input signal. That is, the arc detection sensor 11 included in the switchgear according to the present invention does not detect the occurrence of an arc using the peak value of the input signal, but performs an integral operation on the input signal so that the value reaches a preset value. When this is reached, it is judged that an arc has occurred.

The signal processing unit processes the detection signal output from the integration operation unit and amplifies it to an appropriate level.

The signal processed by the signal processing unit is transmitted to the remote control center through the communication unit so that the current situation of the switchgear can be determined.

The temperature sensor 13 is for sensing the temperature inside the switchgear, and it is preferable to be configured in a non-contact type so that the temperature can be sensed even when not in contact with the temperature sensing object, and an example of this is an infrared temperature sensor.

The temperature sensor 13 may be configured to detect the temperature of a specific point inside the switchboard, more specifically, the inside of the switchboard, or may be configured to detect the ambient temperature of the switchboard. The temperature sensor 13 preferably has a resolution of 1° C. or less, and a response time of 150 msec or less.

In addition, it is preferable that the sensing range of the temperature sensor 13 is -20°C to 500°C.

As shown in FIG. 5, the temperature sensing value is input to the infrared temperature sensor circuit and processed, and the processed value is converted into a voltage value, stored, and then transmitted to the CPU for final processing.

The finally processed temperature sensing value is transmitted to the control center 20, and the status of the switchgear is determined based on the detected temperature value.

The noise detection sensor 14 detects arc sound or abnormal noise generated when an arc is generated inside the switchgear.

The noise sensor 14 may also detect noise generated when the switchgear vibrates due to a phenomenon such as shaking or cracking the ground due to a natural disaster such as an earthquake.

As shown in FIG. 6, the noise detection value is input to the sound detection sensor circuit and processed, and the processed value is converted into a voltage value, stored, and transmitted to the CPU for final processing.

The final processed noise detection value is transmitted to the control center 20, and the situation of the switchgear is determined based on the detected noise value.

The vibration sensor 15 detects shaking of the switchgear due to, for example, a natural disaster that generates abnormal noise, such as an earthquake. However, it is not limited to earthquakes as a cause of vibration. For example, there may be various factors such as explosion sound generated in the surrounding area and collapse of the building itself as the cause of the vibration.

As shown in FIG. 7, the vibration detection value is input to the vibration sensor circuit and processed, and the processed value is converted into a voltage value, stored, and transmitted to the CPU for final processing.

The finally processed vibration detection value is transmitted to the control center 20, and the status of the switchgear is determined based on the detected vibration value.

The detection value of the vibration sensor 15 may be processed in association with the detection value of the noise detection sensor 14 . For example, when the switchgear shakes, it is analyzed whether the detected value of the noise detection sensor 14 and the detected value of the vibration detection sensor 15 are proportional, and emergency measures such as warning or shutting off power to the switchboard are taken depending on whether or not they are proportional. It could be done more quickly.

The conduction sensor 16 senses conduction in one direction, such as the left or right side of the switchgear. The cause of conduction is not limited to earthquakes. For example, there may be various factors such as explosion noise generated in the surrounding area and collapse of the building itself as the cause of the fall.

The detection value of the conductivity sensor 16 may be processed in conjunction with the detection values of the noise detection sensor 14 and the vibration detection sensor 15 . For example, when the switchboard is shaken, it is analyzed whether the detection value of the noise detection sensor 14, the detection value of the vibration detection sensor 15, and the detection value of the conductivity sensor 16 are proportional to each other, and depending on whether or not, a warning or It will be possible to more quickly handle emergency measures such as power cut off for switchboards.

In addition, the conduction sensor 16 may determine the status of the switchboard in association with the vibration sensor 15. In other words, if a vibration higher than a reference value is detected in a state in which the switchboard is inverted at a certain angle for a certain period of time, it is determined that the switchboard may be additionally inverted and the switchboard is judged to be abnormal.

As described above, the arc detection sensor 11, the fire detection sensor 12, the temperature detection sensor 13, the noise detection sensor 14, the vibration detection sensor 15, and the conductivity sensor 16 detect and store the memory. The signal (voltage value) stored in (22) may be transmitted to the control center 20 at regular intervals. For example, the voltage value stored in the memory 22 may be transmitted to the control center 20 every 1 msec. When the voltage value stored in the memory 22 is processed, the voltage value stored in the memory 22 may be cleared.

The alarm unit 24 sounds an alarm when arc, fire, temperature, noise, vibration, and conduction values transmitted from the sensors are out of normal values.

Alternatively, the arc value detected by the arc sensor 11, the fire value detected by the fire sensor 12, the temperature value detected by the temperature sensor 13, and the noise detected by the noise sensor 14 Alarm when at least one or more of the value, vibration value detected by the vibration sensor 15, and conductivity value detected by the conductivity sensor 16 exceed preset arc, fire, temperature, noise, vibration, and conduction values At the same time as this occurs, power to the switchgear may be cut off.

For example, when the temperature detected by the temperature sensor 13 exceeds the alarm set point, an alarm is generated, and when the detected temperature exceeds the cut-off set point, the power circuit inside the switchgear may be cut off. there is. In this case, the temperature of the alarm set point and the temperature of the shutoff set point may be the same or different from each other. When the temperature of the alarm set point and the temperature of the cutoff set point are different from each other, it is preferable that the temperature of the alarm set point is lower than the temperature of the cutoff set point.

The display unit 21 displays arc, fire, temperature, noise, vibration, and conduction values transmitted from the sensors, and displays an alarm message when these detected values deviate from normal values.

The real-time arc value, fire value, temperature value, noise value, vibration value, and conduction value processed as described above are transmitted to the remote control center 20 through the communication unit 26 . At this time, data transmission to the control center 20 is made possible through RS-485 or IEC 61850 communication.

According to the present invention configured as described above, by externally recognizing the arc, fire, temperature, noise, vibration, and conduction status in real time, the status of the switchboard can be grasped, and when the situation is abnormal, a warning or power to the switchboard is cut off. Safety accidents such as electric shock accidents can be prevented by such operations.

In the present invention, when at least one sensing element among various sensing elements is abnormal, it is determined that the switchgear is abnormal, and arc and temperature may be determined as one sensing element. In other words, since the arc and temperature overheating are highly likely to be phenomena caused by abnormal operation of switchgear, these phenomena are taken into consideration. Arc and temperature can be considered as more important factors than other factors.

Taking this case as an example, the detection signal of the arc detection sensor 11 is less than the reference value, the signal of the temperature detection sensor 13 is the reference value, the signal of the noise detection sensor 14 is less than the reference value, and the vibration detection sensor ( 15) If the signal is below the standard value, it is judged that the switchgear is normal.

On the other hand, if the signal of the arc detection sensor 11 is greater than the reference value, the signal of the temperature detection sensor 13 is the reference value, the signal of the noise detection sensor 14 is less than the reference value, and the signal of the vibration detection sensor 15 is less than the reference value, the arc Since the detected value exceeds the reference value, it is determined that the switchgear is abnormal.

In addition, the signal of the arc detection sensor 11 is greater than the reference value, the signal of the temperature detection sensor 13 is also greater than the reference value, the signal of the noise detection sensor 14 is less than the reference value, and the signal of the vibration detection sensor 15 is less than the reference value. If this is the case, the arc and temperature, which are particularly important factors, both exceed the reference value, so the switchgear is judged to be abnormal.

In addition, the arc detection sensor 11 signal is above the reference value, the temperature detection sensor 13 signal is also above the reference value, the signal of the noise detection sensor 14 is also above the reference value, and the vibration detection sensor 15 signal is the reference value If it is abnormal, all detected values exceed the reference value, so it is determined that the switchgear is abnormal.

In addition, the present invention can determine the switchboard situation by reflecting the arc, temperature, noise, vibration, and conduction state. It can be judged to be abnormal. That is, even if the inside of the switchgear is not abnormal, this situation may be an emergency due to external factors, such as earthquake or vibration.

On the other hand, noise and vibration may occur according to the internal conditions of the switchgear, but may also occur in excess of the standard value depending on the external conditions. In addition, overturning can be caused not only by earthquakes, but also by other factors such as explosions and subsidence.

Therefore, the present invention sets the highest value that is determined that noise, vibration, and conduction can occur according to the internal situation of the switchgear, and the noise, vibration, and conduction exceeding the maximum value can be set as occurring according to the external situation. Therefore, when noise, vibration, or conduction exceeding the maximum value occurs, it may be set not to perform an operation to determine whether the switchgear is normal or not.

However, for example, vibration caused by an explosion in the area adjacent to the switchgear may affect the switchgear, and the switchgear located in a weak ground may be conducted at a certain angle due to this vibration, so the actual vibration and conduction value applied to the switchgear When it is determined that it is necessary to temporarily suspend the normal operation of the power supply system, control may be performed to operate only the minimum configuration of the switchgear and temporarily suspend operations of the other configurations.

In addition, since vibration may occur due to the explosion of the switchboard, the operation of the switchboard may be controlled to be stopped when the vibration exceeds the maximum vibration value due to an abnormality of an internal component of the switchboard.

In addition, when vibration or conduction occurs in the switchboard, the switchboard can be controlled based on earthquake information provided from an external information provider such as the Korea Meteorological Administration. For this purpose, the control device of the present invention can be networked with the Korea Meteorological Administration.

For example, when a switchboard is overturned, if earthquake information is received from an external information provider, it is judged to be overturned by an earthquake. Other causes may include natural ground subsidence other than an earthquake, ground subsidence due to nearby explosions, and building collapse. However, it is not limited to these.

Managers can take longer-term measures for switchboards in the case of overturning due to earthquakes, or take immediate corrective measures in the case of simple ground subsidence.

Next, the switchgear control using the temperature sensor of the present invention will be described in detail.

The internal temperature of the switchgear is based on the overall judgment by looking at the inside of the switchgear as a unit, but in a state where the inside is divided into a plurality of pieces so that the temperature values detected by a plurality of sensors installed throughout the interior can be considered and judged as a whole. It may also be determined based on the temperature value for each zone.

The divided zone may include, for example, a zone in which the temperature is likely to be overheated and a zone in which the temperature is not, and the reference temperature value set for each zone may be different.

Here, each divided zone may be exemplified by dividing the interior into n zones, and it is determined whether the temperature value of each divided zone exceeds the reference (normal) temperature value. Here, the temperature value means the temperature detected in each zone, and the judgment value is the temperature of each zone, more precisely, the temperature determined as the final temperature value of the zone by reflecting the extent to which the temperature of each zone affects other zones. means The final temperature value is determined based on the extent to which each zone affects other zones.

For example, since parts showing relatively high temperatures and parts that do not coexist in the interior, it is divided in various ways according to the location or size where they are placed, and the temperature is sensed for each divided area.

Assuming that a part that normally exhibits a high temperature is located in the lower part, for example, there may be cases in which the temperature value detected in other zones is detected higher than the reference temperature value by the temperature of the zone located in the lower part. Considering this point, the temperature value for each zone is finally determined.

For example, when the uppermost inner side is set as the first detection zone and the second, third, fourth, and fifth detection zones are sequentially set below, in the third, fourth, and fifth detection zones. It can be assumed that the temperature may affect the first and second detection zones in particular or vice versa.

Therefore, for example, even if the temperature values detected in the first and second detection zones are higher than the reference temperature value, a certain allowable value is set in advance, and the temperature of the corresponding zone is normal as long as the allowable value is not exceeded. can be judged to be

On the other hand, if any one of the divided sensing zones deviate from the reference temperature value, the switchgear operation may be controlled.

The present invention determines the internal temperature of the switchgear as described above, controls the switchgear according to the determination result, and finally determines by combining the arc, noise, vibration, and conduction state with the subdivided temperature, and operates the switchgear according to the result. can control.

[Second Embodiment]

8 is a control configuration diagram of an accident management system configured with a conduction sensor (switch) according to a second embodiment of the present invention. 9 is a cross-sectional view of the conductivity sensor shown in FIG. 8; 10 is a cross-sectional view of a conductivity sensor according to another embodiment of the second embodiment.

As shown in FIG. 8, the fall detection device according to the second embodiment of the present invention includes a conduction sensor 16 for detecting and outputting a detection signal when a product installed in a horizontal state with respect to the ground is overturned, and the It includes a control device 10 for processing the detection signal transmitted from the conductivity sensor 16. The conduction sensor 16 senses the conduction state of the switchboard by being electrically switched when the switchboard is turned over.

The detection signal by the conduction sensor 16 is processed by the control device 10, and a warning display and a warning sound are output through the display unit 21 and the alarm unit 24 under the control of the control device. Therefore, the administrator can hear or see the warning sound or warning display as above, confirm that the switchgear is currently inverted, and take appropriate measures.

The detailed structure and operation principle of the conductivity sensor 16 is shown in FIG. 9 .

As shown in FIG. 9, the conductivity sensor 16 includes a cylindrical first conductive member 101 and a metal weight-shaped second conductive member suspended and movable at the center of the upper surface of the first conductive member 101. (102). The first and second conductive members 101 and 102 are connected to the controller of the control device 10 by first and second lead wires 103 and 103', respectively.

Also, the first conductive member 101 may be installed on one side of the body frame 1 of the switchboard.

If the switchboard is inverted at a certain angle in a certain direction, the first conductive member 101 installed in the body frame 1 is also inverted in the direction in which the switchboard is inverted, and eventually one side of the inner circumferential surface of the first conductive member 101 The second conductive member 102 is brought into contact. The control device processing the detection signal generated by the contact between the first conductive member 101 and the second conductive member 102 outputs a control signal to the display unit 21 and the alarm unit 24 .

Accordingly, a predetermined warning message and a warning sound are output through the display unit 21 and the alarm unit 24, so that a manager can easily check the conduction state of the switchboard.

On the other hand, as another embodiment, the diameter of the first conductive member 101 can be configured variably so that the conduction angle of the second conductive member 102, which is interlocked and inclined as the switchgear is turned over, can be set in various ways. That is, to set the conduction angle of the switchboard to detect, for example, 15° or more, the first conductive member 101 is conductive so that the second conductive member 102 is conducted at an angle of 15° to contact the first conductive member 101. ), and if it is set to detect if it is 30 ° or more, the second conductive member 102 is conducted at an angle of 30 ° so that the first conductive member 101 can contact the first conductive member 101 It will be possible to set the diameter of

Referring to FIG. 10 , the third conductive member 104 and the fourth conductive member 105 are additionally configured in the conductivity sensor 16 . The third conductive member 104 and the fourth conductive member 105 are formed in the middle of the first conductive member 101 to guide the movement of the first conductive member 101. ) is inserted. The middle part of the first conductive member 101 is cut so as to be able to move left and right.

The third conductive member 104 and the fourth conductive member 105 are configured to change the diameter of the first conductive member 101, and the first conductive member 101 is the third conductive member 104 and the second conductive member 104. 4 It can move left and right on the drawing while being guided by the conductive member 105. That is, if the state shown in FIG. 10 represents a state in which the second conductive member 102 is conducted at an angle of 15 °, to increase this angle, for example, to detect the case of conduction at an angle of 30 °, the third conductive member ( 104) and a portion of the first conductive member 101 from the fourth conductive member 105.

When the conduction sensor is installed inside the switchboard as shown in FIG. 10 in the state configured as described above, it is possible to detect left and right conduction of the switchboard. In addition, the left and right conduction angle ranges may be set differently.

That is, the left side of the first conductive member 101 is partially pulled out from the third conductive member 104 and the fourth conductive member 105 to detect that the second conductive member 102 is conducted to the left at an angle of 30 ° or more, If the right side of the first conductive member 101 is partially removed from the third conductive member 104 and the fourth conductive member 105 to sense that the second conductive member 102 is conducting at an angle of 15° or more, the left and right sides of the switchboard are detected. In a state where the conduction angle detection range is set differently, the left and right conduction state of the switchboard can be reliably sensed.

As another embodiment of the present invention, when the first conductive member 101 is formed by being separated in at least four directions, and separate lead wires are connected to each separated conductive piece and connected to a control device, the conduction angle of the switchboard It can also sense the direction of conduction. According to this, the manager can check the felling direction, at least the front, rear, left, and right directions at a glance, so that the leveling of the switchboard can be more easily adjusted.

That is, when four first conductive members 101 as shown in FIG. 9 or 10 are integrally formed and installed inside the switchboard, the second conductive member is conducted so as to correspond to the direction in which the switchboard is conducted, and the first conductive member and the contact signal is transmitted to the control device and processed, thereby confirming the conduction direction of the switchgear.

[Third Embodiment]

11 is a cross-sectional view of a conductivity sensor according to a third embodiment of the present invention. 12 is a schematic diagram of the operation of the conductivity sensor shown in FIG. 11;

As shown in FIGS. 11 and 12, the conduction sensor 16 is composed of a cylindrical case 110 as an insulator and the inside of the case 110, and is interlocked and flows as the switchboard is conducted. By providing the first conductive member 111 and the conduction range (angle) of the first conductive member 111 while being formed in a circular shape, the first conductive member 111 flows up and down to adjust the conduction angle. The second conductive member 112 is connected to the second conductive member 112 to fix the second conductive member, so that the second conductive member 112 moves up and down in a screw-type loosening or tightening manner. a conduction angle adjusting device 113 for adjusting the conduction angle of the first conductive member 111 while controlling the conduction angle, a terminal block 114 for transmitting the conduction detection signal of the first conductive member 111 to a control device, It consists of a control cable 115 for transmitting the switching signals of the first conductive member 111 and the second conductive member 112 to the terminal material 114, and a display unit 116 for displaying the processing result of the control device. do.

The first conductive member 111 is formed in a cylindrical shape whose diameter increases from top to bottom, and operates to generate a conduction angle detection signal while moving within a flow range determined by the second conductive member 112.

The second conductive member 112 is moved up and down by the conduction angle adjusting device 113 to adjust the conduction angle of the first conductive member 111, so that the first conductive member 111 moves from the top to the bottom. Since it is formed so that the diameter becomes wider as it goes to , a larger conduction angle will be detected if it is in a state of flow upward (shown by a dotted line) than when it is in the lower position. That is, as the second conductive member 112 is positioned above the first conductive member 111, the conduction angle sensing range of the first conductive member 111 increases.

In this way, since the conduction angle detection range is adjusted according to the position of the second conductive member 112, the control device 10 determines the conduction angle determined according to the number of left or right turns of the conduction angle adjusting sphere 113, for example. A program may be provided. Alternatively, a program for determining the conduction angle determined according to the position of the second conductive member 112 may be provided.

The conduction angle adjuster 113 is connected to the second conductive member 111 through, for example, a metal wire having a certain strength, and the upper end of the metal wire has a screw groove formed on the inner circumferential surface of the conduction angle adjuster 113. As the screw groove corresponding to is formed, the metal wire is also tightened or loosened as the conduction angle adjuster 113 is tightened or loosened, changing the position of the second conductive member 112 up and down.

In the conduction sensor configured as described above, if the switchboard is inverted in the left or right direction, the first conductive member 111 is also conducted in the direction in which the switchboard is inverted, and eventually the first conductive member 111 is converted to the second conductive member ( 112) comes into contact.

The switching signals of the first conductive member 111 and the second conductive member 112 are transmitted to the terminal block 114 through the control cable 115 and then input to the control device 10 for processing, thereby conducting conduction of the switchgear. will judge

Next, the display unit 116 outputs a message notifying the conduction of the switchgear according to the control of the control device so that the manager recognizes it.

An embodiment of a device for implementing a total management system for switchgear accidents using an integrated detection sensor has been described. The embodiments described above are illustrative of some of the many specific embodiments that demonstrate the principles described herein. Therefore, by using the embodiments of the present invention, those skilled in the art will be able to easily implement many other arrangements within the scope defined by the claims of the present invention.

10: switchgear (control device) 20: control center
11: arc detection sensor 12: temperature detection sensor
13: noise detection sensor 15: vibration detection sensor
16: conductivity sensor 21: display unit
24: alarm unit 101, 102, 104, 105, 111, 112: conductive member
113: conduction angle adjusting device 114: terminal block
115: control cable

Claims (7)

In the switchboard accident total management system using an integrated detection sensor,
Arc and fire detection sensors that detect arcs and fires generated inside switchgear by integral operation method;
a temperature sensor that measures the temperature in a specific area inside the switchboard or around the switchboard in a non-contact manner;
a noise sensor for detecting noise of the switchgear;
a vibration sensor for detecting vibration of the switchgear;
a conduction sensor that senses conduction of the switchgear;
Signals detected by the integrated detection sensor and conduction sensor are processed, and data is accumulated by storing and recording the detection data of the integrated detection sensor and conduction sensor in the form of a graph or list, and A control device that predicts the remaining life and prevents accidents and minimizes the spread of accidents through the first alarm and the second main power cutoff according to the judgment result; and
It consists of a data communication device that allows a remote control center to monitor and control the switchgear based on the detection signal transmitted from the control device of the switchgear,
The conductivity sensor
A cylindrical case as an insulator, a first conductive member constituted inside the case and flowing in conjunction with the switchgear as the switchgear is conducted, and being formed in a circular shape to provide a conduction range (angle) of the first conductive member As a result, the second conductive member that flows up and down so that the conduction angle of the first conductive member is adjusted, and the second conductive member is connected to the second conductive member to fix the second conductive member. A conduction angle adjusting device for adjusting the conduction angle of the first conductive member while moving the second conductive member up and down; a terminal block for transmitting the conduction detection signal of the first conductive member to a control device; 2 composed of a control cable for transmitting the switching signal of the conductive member to the terminal block and a display unit for displaying the processing result of the control device;
The first conductive member is formed in a cylindrical shape with a diameter increasing from top to bottom, and operates to generate a conduction angle detection signal while moving within a flow range determined by the second conductive member,
The second conductive member is moved up and down by the conduction angle adjusting sphere to adjust the conduction angle of the first conductive member, and the conduction angle detection range of the first conductive member increases as it is located above the first conductive member. make it bigger,
The control device is provided with a program for determining a conduction angle determined according to the number of left or right turns of the conduction angle adjusting device or a program for determining a conduction angle determined according to the position of the second conductive member,
The conduction angle adjuster is connected to the second conductive member through a metal wire having a certain strength, and a screw groove corresponding to the screw groove formed on the inner circumferential surface of the conduction angle adjuster is formed at the upper end of the metal wire, so that the conduction angle adjuster As the is tightened or loosened, the metal wire is also tightened or loosened to change the position of the second conductive member vertically. The method of claim 1,
A switchboard accident total management system using an integrated detection sensor, characterized in that the control device calculates and processes only when the result detected by the arc and fire detection sensor exceeds 15 Joule / cm 2 of generated energy. The method of claim 1,
Only when the energy detected by the arc and fire detection sensors exceeds a preset output set value, the control device operates a relay included in the switchboard to open an alarm alarm or the main power, but the output set value is greater than 59 Joule / cm 2 , A switchboard accident total management system using an integrated detection sensor, characterized in that it is adjustable. delete delete delete delete

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