KR102169705B1 - multi point temperature monitering system of busduct and temperature monitering method thereof - Google Patents

Abstract

Disclosed are a bus duct multi-point temperature monitoring system and a temperature monitoring method thereof. The bus duct multi-point temperature monitoring system according to the present invention and its temperature monitoring method can easily implement real-time temperature monitoring of the installed bus duct at low cost, and perform accident prevention and inspection by accurately and quickly grasping the temperature inside the connection part in real time. It can be done, and replacement can be easily performed in case of failure or damage of the temperature sensor.

Description

TECHNICAL FIELD The multi-point temperature monitoring system of busduct and temperature monitering method thereof

The present invention relates to a bus duct multi-point temperature monitoring system and a temperature monitoring method thereof, and more particularly, real-time temperature monitoring of the installed bus duct can be easily implemented at low cost, and replacement is easy when a temperature sensor is broken or damaged, The present invention relates to a bus duct multi-point temperature monitoring system that can accurately and continuously measure the temperature of a problem point and a temperature monitoring method thereof.

In general, cables have been used a lot in the past as a medium for transmitting electrical energy, but in recent years, bus ducts have been widely used as a replacement for cables. The bus duct has a bus bar that performs the same role as a conductor core wire included in a cable, and has an advantage of being able to conduct a large amount of current.

Originally, in the power wiring method, the wiring method by wire cable has been widely used, but in the wiring method such as high-rise buildings or large-scale factories, the wiring method by bus duct gradually having a bus bar. The case of adopting is increasing.

These bus ducts and cables have a conductor and an insulator in common, but the cable uses vinyl or rubber to protect or insulate the conductor, but the bus duct transfers a large amount of current through the conductor, so it is difficult to directly protect it as an insulator. There is a difference in that the insulator is covered on the busbar and the busbar is embedded in the metal duct.

Such a bus duct is widely used in places that use a relatively large amount of power because it is not only easy to expand and relocate, but also can be quickly recovered when an abnormality or accident occurs on the power wiring of the bus bar.

Moreover, compared to the past, since the electricity supply system of today's buildings is increasingly larger and requires energy of various capacities, according to this trend, the use of bus ducts with safe and low energy loss is rapidly increasing.

For example, booth ducts are factories, buildings, apartments, large discount marts, officetels, research complexes, department stores, golf courses, tunnels, semiconductor and LCD factories, chemicals, oil refining, steelmaking, high-rise buildings, ultra-high voltage substations, LNG receiving bases, new airports, and ports. It is applied to facilities in various fields such as.

The busbar provided inside the bus duct is provided in a state of being isolated from the outside inside the duct of a predetermined size because a large current flows normally. It is connected and constructed according to the facility and distribution design to be installed.

At this time, a connection part is provided so that the bus duct manufactured as a unit unit can be continuously installed. That is, in each bus duct, the conductor is connected to each other by the connection part, and the external ground is connected to each other.

Such a conventional connection part consists of a structure in which the conductor plate and the insulating plate are alternately arranged, and the bus bar of the bus duct is inserted between the conductor plates, and then the conductor plate and the insulating plate are tightened with a fastening bolt so that the inserted bus bar does not escape . After that, by combining the enclosure of the bus duct and the enclosure of the connection part, the bus ducts adjacent to each other are assembled.

Due to the characteristics of the bus ducts that are constructed by connecting unit units in this way, management and inspection of the connection part is important, and in particular, it is necessary to continuously monitor whether the temperature rises abnormally at the connection part.

The bus bar of the bus duct is generally made of copper or aluminum with excellent conductivity. When current flows through the bus bar, Joule's heat is generated and the temperature rises, and the generated heat is concentrated on the connection part by convection. Phenomenon can happen.

In addition, since the temperature may rise due to an increase in resistance due to poor connection of the connection or deformation due to the expansion and contraction of the busbar, it is important to monitor such temperature changes to prevent accidents and check them in advance. More important.

However, it takes a lot of cost to build such a temperature monitoring system, and since it is not easy to repair or replace a general temperature sensor, a lot of manpower and cost are inevitably required for maintenance.

Therefore, it is possible to easily implement real-time temperature monitoring of the installed bus duct at low cost, it is easy to replace in case of failure or damage of the temperature sensor, and a bus duct multi-point temperature monitoring system that can accurately and continuously measure the temperature of the problem point. And the necessity of the temperature monitoring method is emerging.

Embodiments of the present invention are intended to easily implement real-time temperature monitoring of an installed bus duct at low cost.

In addition, it is intended to perform accident prevention and inspection by accurately and quickly grasping the temperature inside the connection part in real time.

In addition, it is intended to be easily replaced in case of failure or damage of the temperature sensor.

According to an aspect of the present invention, a plurality of temperatures that are respectively installed at a plurality of connection portions connecting a bus duct, and a sensing unit for sensing temperature measure the temperature of the connection unit in a state that contacts at least a portion of the connection unit or not A bus duct multi-point temperature monitoring system including a sensor and a monitoring unit that receives temperature information of each connection unit collected from the plurality of temperature sensors and performs monitoring of temperature information and an alarm for temperature information outside a preset range will be provided. I can.

The monitoring unit includes a power supply device that supplies operating power to the temperature sensor, a data collection device that collects and transmits temperature information from the plurality of temperature sensors, and receives temperature information from the data collection device for inquiry, It can be made including a terminal that performs a normal range setting and alarm function.

The monitoring unit may obtain an average value through temperature information collected by at least three temperature sensors, and may perform an alarm when a difference between the temperature measured at an arbitrary connection unit and the average value is greater than a preset value.

The monitoring unit may perform an alarm when a temperature measured at an arbitrary connection is greater than a preset reference temperature.

The monitoring unit may perform an alarm when a temperature change value measured for a predetermined time at an arbitrary connection is greater than a preset value.

The temperature sensor may be detachably coupled to a hollow portion formed on one side of the connecting portion enclosure provided to surround the outside of the connecting portion.

According to another aspect of the present invention, a plurality of temperatures are respectively installed at a plurality of connection portions connecting the bus ducts, and a sensing unit for sensing the temperature measures the temperature of the connection unit in a state in which at least a portion of the connection unit is in contact or not In the bus duct multi-point temperature monitoring system comprising a sensor and a monitoring unit that receives temperature information of each connection unit collected from the plurality of temperature sensors and performs monitoring of temperature information and an alarm for temperature information outside a preset range, Measuring the temperature of the connection part through a temperature sensor installed in each connection part, collecting temperature information measured in the connection part, and determining whether or not a temperature abnormality in each connection part is performed through the collected temperature information, and , A temperature monitoring method of a bus duct multi-point temperature monitoring system including the step of performing an alarm when there is a temperature abnormality after determining whether the temperature is abnormal may be provided.

The step of determining whether the temperature is abnormal may include obtaining an average value through temperature information collected from at least three or more temperature sensors, and determining that the difference between the temperature measured at an arbitrary connection and the average value is greater than a preset value, the temperature is higher. Can be configured.

The step of determining whether the temperature is abnormal may be configured to determine that the temperature is higher than a preset reference temperature when the temperature measured at the arbitrary connection unit is greater than the temperature.

The determining of the temperature abnormality may be configured to determine that the temperature change value measured for a predetermined period of time at an arbitrary connection unit is greater than a preset value, to determine the temperature abnormality.

Embodiments of the present invention can conveniently implement real-time temperature monitoring of an installed bus duct at low cost.

In addition, accident prevention and inspection can be performed by accurately and quickly grasping the temperature inside the connection part in real time.

In addition, it is possible to easily replace the temperature sensor in case of failure or damage.

1 is a perspective view showing the structure of a bus duct connection unit according to an embodiment of the present invention
2 is an exploded perspective view of a bus duct connection part according to an embodiment of the present invention
3 is a perspective view of a temperature sensor according to an embodiment of the present invention as viewed from above
4 is a perspective view of a temperature sensor according to an embodiment of the present invention as viewed from below
5 is an exploded perspective view showing an assembly structure of a bus duct connection unit according to an embodiment of the present invention
6 is an exploded perspective view showing an assembly structure of an insulating plate and a energizing plate of a bus duct connection part according to an embodiment of the present invention
7 is a cross-sectional view showing an assembly structure of a bus duct connection unit according to an embodiment of the present invention
8 is a block diagram showing the configuration of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention
9 is a graph showing a ratio differential temperature monitoring method of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention
10 is a graph showing a static temperature monitoring method of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention
11 is a graph showing a differential temperature monitoring method of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art. The same reference numbers throughout the specification denote the same elements.

1 is a perspective view showing the structure of a bus duct connection unit according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of a bus duct connection unit according to an embodiment of the present invention, and Fig. 3 is an embodiment of the present invention It is a perspective view of the temperature sensor according to the upper side. 4 is a perspective view of a temperature sensor according to an embodiment of the present invention as viewed from a lower side, FIG. 5 is an exploded perspective view showing an assembly structure of a bus duct connection according to an embodiment of the present invention, and FIG. It is an exploded perspective view showing an assembly structure of an insulating plate and a energizing plate of a bus duct connection according to an embodiment. 7 is a cross-sectional view showing an assembly structure of a bus duct connection unit according to an embodiment of the present invention.

1 to 7, the bus duct connection part 100 according to an embodiment of the present invention is coupled to one side of the connection part enclosure 105 surrounding the outside of the connection part 100, and the connection part enclosure 105, The sensing unit 192 for sensing temperature may include a temperature sensor 190 for measuring the temperature of the connection unit 100 in a state in which at least a portion of the connection unit 100 is in contact with or does not contact.

The connection part 100 is configured to surround the outside of the connection part assembly 100a to which the bus bar 20 of the adjacent bus duct 10 is inserted and fastened. The connection unit enclosure 105 surrounds the connection unit assembly 100a by coupling the first enclosure 101 and the second enclosure 103 at the upper and lower sides, respectively.

The temperature sensor 190 may be installed in a manner that is embedded in the connection unit enclosure 105 or attached to the outside, but in this embodiment, a hollow part 103a is formed on one side of the connection unit enclosure 105 and the hollow It may be configured to be detachably coupled to the portion (103a).

That is, in the present embodiment, the temperature sensor 190 may be coupled from the outside of the connecting part enclosure 105 but inserted through the connecting part enclosure 105.

In this case, the temperature sensor 190 may be a digital temperature sensor. The resistance value of a metal or semiconductor varies with temperature, and an electromotive force may be generated when the junction between dissimilar metals is heated. The digital temperature sensor measures the temperature by measuring the resistance or electromotive force generated here.

Since the digital temperature sensor outputs the measured temperature value as a digital signal, processing of the output data is convenient, and performance degradation due to the influence of noise can be prevented. In addition, the power consumption is low, and there is an advantage that is advantageous for measuring a relatively wide range of temperatures.

Specifically, the temperature sensor 190 changes the current voltage characteristic of the PN junction constituting the sensing unit 192 according to the temperature change, and amplifies sensor data, which is a small signal, by embedding an amplifying circuit. It may be configured to remove noise that may be introduced from the outside.

The sensing unit 192 may extend a predetermined length inside the connection unit, and may be configured to measure the temperature inside the connection unit enclosure 105. In this case, the sensing unit 192 may be configured to measure the temperature of the connection unit 100 in a state in which at least a portion of the connection unit 100 is in contact or does not come into contact.

4, the sensing unit 192 according to the present embodiment is configured to measure temperature in a non-contact manner, but is not limited thereto. For example, the sensing unit 192 is the connection unit assembly 100a It is also possible to be configured to measure the temperature in a state in contact with the connection part assembly (100a) is formed to extend long to contact.

On the other hand, the temperature sensor 190 may include at least one locking portion 194 that holds so as not to be separated from the outside when inserted into the hollow portion 103a of the connecting portion enclosure 105. In the present embodiment, an example is presented in which two locking portions 194 are formed on one side and two are formed at positions corresponding to the other side, so that all four are formed.

The locking part 194 is made of an elastic material, and when the hollow part 103a is inserted, it is deformed inward by being pressed against the edge of the hollow part 103a, and when the temperature sensor 190 is inserted into the correct position, it returns to the original position and the connection part It is caught by the enclosure 105 to prevent the temperature sensor 190 from being separated. In addition, when replacing the temperature sensor 190, the locking part 194 is removed by applying an external force to damage, and a new temperature sensor 190 may be replaced.

As described above, the temperature sensor 190 applied to the bus duct connection part 100 according to an embodiment of the present invention has the advantage of being easy to install, easy to manage and check, and to be easily replaced in case of failure or damage. .

Meanwhile, the temperature sensor 190 may further include a double-sided tape 196 that improves adhesion around a periphery in contact with the connection unit enclosure 105. Through the adhesive force of the double-sided tape 196, the temperature sensor 190 may be more stably coupled to the connection unit enclosure 105.

A connection part 198 to which a communication cable 70 is inserted and connected to the upper part of the temperature sensor 190 may be provided. The connection part 198 is connected by inserting and connecting the terminals of the communication cable 70 from both sides, so that electrical connection can be made and required power and electrical signals can be exchanged.

Meanwhile, the hollow part 103a may be formed under the connection part enclosure 105 so that the temperature sensor 190 may be coupled to the lower part of the connection part enclosure 105. That is, a hollow part 103a is formed under the connection part enclosure 105 as a construction standard, and in this embodiment, as shown in FIG. 2, it is fastened from the lower part of the first enclosure 101 and the second enclosure 103 A hollow portion 103a may be formed on the side of the second enclosure 103 that is to be formed.

In this way, by forming the hollow part 103a on the lower part of the connection part enclosure 105 based on the construction standard, and by combining the temperature sensor 190 to the lower part, water falling from the upper side by rainwater or leakage soaks into the short circuit or the temperature sensor 190 ) Can be prevented from being damaged.

Meanwhile, looking at the basic structure of the bus duct 10 according to an embodiment of the present invention, an enclosure 12 is provided to form a predetermined space therein. The inside of the enclosure 12 is provided with a bus bar 20 serving as a conductor core wire included in a cable to conduct a large amount of current. Wing portions 14 are formed to extend a predetermined length on both sides of the upper and lower surfaces of the enclosure 12 to reinforce strength.

The bus bar 20 is made of a conductor 22 such as copper or aluminum. In this embodiment, a case mainly made of aluminum will be described as an example. The surfaces of the conductors 22 are each covered with an insulator 24 such as an epoxy coating to be electrically insulated from each other. Since the busbar 20 normally flows a large current, it is first insulated by covering the insulator 24, and received and protected inside the enclosure 12 in a state isolated from the outside. The enclosure 12 including the bus bar 20 may be manufactured as a unit unit having a predetermined length and then connected and installed by the bus duct connection unit 100. At this time, the end of the bus bar 20 inserted into the bus duct connection part 100 peels off the insulator 24 to expose the conductor 22 to the outside.

Looking at the structure of the bus duct connection part 100 according to an embodiment of the present invention in more detail with reference to FIGS. 5 to 7, first, a plurality of insulating plates 110 are disposed at a predetermined interval, and the plurality of insulating plates ( The energization plate 120 is provided on one or both sides of 110) to come into contact with the bus bar 20. Here, the insulating plate 110 may serve to insulate between phases.

Specifically, the energizing plate 120 is preferably configured to contact both side surfaces of the busbar 20 which is provided and inserted on opposite surfaces of the insulating plates 110 adjacent to each other.

In this embodiment, the busbars 20 are composed of four phases of R, S, T, and N, and four are provided. Accordingly, five insulating plates 110 are arranged at regular intervals to form four busbars 20 A passage through which) can be inserted is formed, and energization plates 120 are provided on opposite surfaces of the insulating plates 110 adjacent to each other, so that each of the four busbars 20 contacts from both sides.

That is, a pair of conductive plates 120 arranged to face each other between the insulating plates 110 contact the bus bar 20 to make electrical connection, and the insulating plates 110 form each pair. It serves to insulate the phases between the plates 120.

The configuration of the bus bar 20 may be variously configured according to an installation target of the bus duct 10, an installation environment, and power capacity to be supplied. For example, the busbar 20 may be formed of three-phase busbars 20 of R, S, T, or 5 busbars 20 by combining R, S, T and two Ns. In this case, the insulating plate 110 and the energizing plate 120 are also provided to correspond to the number of the bus bars 20 to constitute the bus duct connection unit 100.

An outer plate 180 may be provided on the outermost side of the plurality of insulating plates 110. As shown in FIG. 5, two outer plates 180 may be provided on both upper and lower sides.

In this case, between the outer plate 180 and the insulating plate 110, a ground plate 18 extending from the enclosure 12 surrounding the bus bar 20 may be inserted. The ground plates 18 are formed to extend from the enclosure 12 of the bus duct 10 connected to each other, and are connected together when the bus bars 20 are connected to perform a grounding role.

Meanwhile, through holes 112, 122 and 182 are formed in the centers of the outer plate 180, the insulating plate 110, and the energized plate 120, respectively, and the fastening bolts through the through holes 112, 122, 182 140 is inserted to couple the outer plate 180, the insulating plate 110 and the energizing plate 120.

The fastening bolt 140 is inserted into the through hole 112, 122, 182, and then a nut 170 is coupled to the opposite side to be tightened, and the outer plate 180, the insulating plate 110, and the energizing plate 120 Press the inside to fix. At this time, the busbar 20 inserted between the insulating plates 110 is also fixed in a crimped state and makes electrical contact in a state in close contact with the energizing plate 120.

A washer 150 is provided at a portion where the fastening bolt 140 is inserted and the nut 170 on the other side is tightened to increase the fastening force, and a loosening prevention hole 160 is additionally provided on the outer circumference of the nut 170 It may be configured to prevent the nut 170 from being released from the fastening bolt 140.

Meanwhile, when the fastening bolt 140 is inserted into the through holes 112, 122, 182, the insulating bush 130 may be inserted together to surround the outside of the fastening bolt 140. The insulating bush 130 may be configured to be inserted and coupled from both sides of the upper and lower sides as shown in FIG. 5, and by surrounding the fastening bolts 140 inserted into the through holes 112, 122, 182, the booth Even if the bar 20 is extended, it serves to insulate it so that it does not come into contact with the fastening bolt 140.

In addition, a ring member 132 is additionally provided between the insulating plates 110 so as to surround the outer circumferential surface of the insulating bush 130 to protect the insulating bush 130 and additionally insulate the fastening bolt 140 Can be done.

When the connection of the bus duct connection unit 100 configured as described above is completed, the connection unit enclosure 105 is covered.

Meanwhile, an uneven portion 124 may be formed on the energizing plate 120 to facilitate movement of the bus bar 20 when the bus bar 20 is stretched or contracted. As described above, the busbar 20 inserted between the energizing plate 120 by the fastening force of the fastening bolt 140 and the nut 170 is tightened and connected under high pressure. In this state, if a new construction by thermal deformation or a reduced load of the building itself is received, the busbar 20 cannot move due to the frictional force acting by the pressure applied between the energized plates 120, and the buckling phenomenon occurs due to deformation. I can.

The uneven portion 124 serves to smoothly move according to the expansion and contraction of the busbar 20 by reducing such frictional force. Specifically, the uneven portion 124 may be elastically deformed according to the expansion and contraction of the busbar 20.

The uneven portion 124 may be formed on the electrifying plate 120 in contact with the bus bar 20, and as shown in FIGS. 5 to 7, in the direction in which the bus bar 20 is inserted. The concave portion and the convex portion may be formed in a shape that is continuously repeated for a predetermined length.

When the busbar 20 is elongated, the uneven portion 124 elastically deforms in the direction in which the busbar 20 travels, thereby reducing frictional force acting on the busbar 20. In addition, even when the bus bar 20 is reduced and returned to its original position, the uneven portion 124 is elastically deformed in the opposite direction to help the movement of the bus bar 20.

At this time, as the uneven portion 124 elastically deforms, the coefficient of static friction is lowered, and accordingly, the busbar 20 is in a state in which it can move without receiving a large resistance. Of course, even in this state, since the energization plate 120 and the bus bar 20 maintain electrical contact through the uneven portion 124, there is no change in energization performance, which is confirmed by the experimental results.

In this way, the concave-convex portion 124 serves to reduce the frictional force of the bus bar 20 and the energizing plate 120 in contact with the bus bar 20, and ensures the movement according to the expansion and contraction of the bus bar 20 It is possible to prevent the phenomenon that the bar 20 is deformed and buckled because it cannot proceed due to frictional force. In addition, it is possible to increase the reliability of the product by solving the problem that the busbar 20 is damaged or deformed to reduce the electric current performance.

Meanwhile, a first stopper 126 for holding a construction reference point when connecting the bus duct 10 may be provided on the energizing plate 120. The first stopper 126 automatically enters the bus bar 20 until the end of the bus bar 20 contacts the front end of the first stopper 126 when the bus bar 20 is connected. By allowing the initial entry amount of the bar 20, that is, the initial position to be determined, it serves to align all the busbars 20 in a uniform position.

Here, the first stopper 126 is configured to be structurally bent when the bus bar 20 is stretched by thermal expansion and the end of the bus bar 20 is pushed to allow the extension of the bus bar 20 naturally. It is possible to absorb the movement of the bus bar 20.

Further, the ring member 132 surrounding the outer circumferential surface of the insulating bush 130 may include at least one second stopper 136 that extends for a predetermined length in the direction in which the bus bar 20 is inserted and is elastically deformable. .

As described above, the ring member 132 serves to secondarily protect the fastening bolt 140 by surrounding the outer circumferential surface of the insulating bush 130 between the insulating plates 110. The second stopper 136 is formed to extend a certain length from the ring member 132, and may be formed by injection molding as an integral part with the ring member 132, and may be formed by injection molding as a whole with the ring member 132. It may be made of an elastic material.

The second stopper 136 may be formed to protrude in both directions into which the bus bar 20 is inserted. In this embodiment, three are provided in each direction, but the number of the second stoppers 136 may be applied differently as necessary.

This second stopper 136 can be applied in combination with the first stopper 126, and as shown in FIG. 6, except for the first stopper 126, only the second stopper 136 is applied. It is possible.

The second stopper 136, like the first stopper 126, can serve to hold the reference point for the construction of the bus bar 20, as well as the bus bar 20 is extended by thermal expansion and thus the bus bar 20 When the end of) is pushed, it is elastically deformed, thereby naturally allowing the extension of the bus bar 20 to absorb the movement of the bus bar 20.

8 is a block diagram showing the configuration of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention, and FIG. 9 is a ratio differential temperature monitoring method of the bus duct multi-point temperature monitoring system according to an embodiment of the present invention. Fig. 10 is a graph showing a static temperature monitoring method of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention. 11 is a graph showing a differential temperature monitoring method of a bus duct multi-point temperature monitoring system according to an embodiment of the present invention.

8 to 11, the bus duct multi-point temperature monitoring system 1000 according to an embodiment of the present invention is installed on a plurality of connection units 100 connecting the bus duct 10, respectively, and senses temperature. A plurality of temperature sensors 190 for measuring the temperature of the connection part in a state in which the sensing part 192 contacts or does not contact at least a part of the connection part, and the temperature of each connection part collected from the plurality of temperature sensors 190 The information may be transmitted and may include a monitoring unit 200 that monitors temperature information and performs an alarm for temperature information outside a preset range.

That is, as in the above-described structure, by installing a temperature sensor 190 at each connection unit 100 to measure the temperature, and by additionally providing a monitoring unit 200 capable of monitoring in real time through the temperature information collected through the booth A duct multi-point temperature monitoring system 1000 can be configured.

Here, the monitoring unit 200 includes a power supply device 210 that supplies operating power to the temperature sensor 190, and a data collection device 220 that collects and transmits temperature information from the plurality of temperature sensors 190. ), and a terminal 230 for receiving temperature information from the data collection device 220 and performing an inquiry, setting a normal range and performing an alarm function.

Each of the temperature sensors 190 is connected by a communication cable 70, wherein the communication cable 70 may be a 485 communication cable. The 485 communication cable has the advantage of being able to monitor the temperature of the bus duct 10 installed in a wide range without installing an additional relay server because communication is possible in a range of 1 to several kilometers.

In addition, the communication cable 70 is preferably provided with a shielding function to minimize the influence of the magnetic field formed by the current flowing through the bus bar 20 of the bus duct 10.

The communication cable 70 is fixed to the mounting groove 16 (see FIG. 1) formed in the bus duct enclosure 12 and installed along the bus duct 10, and the temperature sensor 190 installed in the connection part 100 It is connected to the connection part 198.

The power supply device 210 supplies operating power so that the temperature sensor 190 can operate, and for example, DC 24V or DC 36V may supply various operating power as needed.

The temperature information measured by each temperature sensor 190 is transmitted to the data collection device 220 and collected through a communication cable, and the collected temperature information may be transmitted to the terminal 230 again.

The terminal 230 may be implemented in various forms such as a PC or a touch pad mobile device, and the user can query temperature information and set and monitor the normal range through the terminal 230, and an alarm in case of an abnormal temperature increase. The alarm signal can be delivered through.

After the system is constructed as described above, temperature monitoring of the bus duct connection unit 100 is performed. When the temperature increases abnormally, an alarm is performed so that the user can recognize it and take appropriate measures such as repair or replacement.

Specifically, as shown in FIG. 9, the average value is obtained through temperature information collected by at least three or more temperature sensors 190, and the difference between the temperature measured at an arbitrary connection unit 100 and the average value is preset. It can be configured to trigger an alarm if it is greater than a number.

This is called a ratio differential method, which determines whether there is an abnormality based on the amount of temperature change between the measuring point and the other measuring point. Here, the location of the temperature information collected to obtain the average value or the numerical range determined to be abnormal may be variously set in consideration of the installation environment of the bus duct 10 or the previously collected temperature information database.

For example, as shown in FIG. 9, after collecting temperature information about four locations before and after the measurement point, an average value is obtained, and an alarm may be performed when the temperature of the measurement point is higher than that of 15°C.

Meanwhile, as shown in FIG. 10, the monitoring unit 200 may be configured to perform an alarm when a temperature measured by an arbitrary connection unit 100 is greater than a preset reference temperature. This is a constant temperature type, which determines whether or not the temperature rises more than the set reference temperature.

For example, when the reference temperature is 60°C, a pre-alarm may be performed at 50°C, and when the temperature rises above 60°C, this alarm may be performed.

In addition, as shown in FIG. 11, the monitoring unit 200 may be configured to perform an alarm when a temperature change value measured for a predetermined time by an arbitrary connection unit 100 is greater than a preset value. This is a differential type, and it is possible to determine whether there is an abnormality by whether or not the temperature rapidly changes within a certain time.

For example, if the set time is set to 1 minute, and the temperature change changes by 7℃ or more during that time, an alarm may be performed. As shown in FIG. 11, when the temperature changes by 13℃ or more for 40 seconds, an alarm is performed. It can be configured in various ways.

Each of the above-described temperature monitoring methods may be applied to the present system, and it is also possible to perform temperature monitoring by repeatedly applying two or more or all three.

The bus duct connection unit according to the embodiments of the present invention described so far can easily implement real-time temperature monitoring of the installed bus duct at low cost, and to accurately and quickly identify the temperature inside the connection unit in real time to prevent and inspect accidents. It can be replaced easily in case of failure or damage of the temperature sensor.

Although the above has been described with reference to one embodiment of the present invention, those skilled in the art may variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You can do it. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, all should be considered to be included in the technical scope of the present invention.

10: bus duct 18: ground plate
20: bus bar 100: bus duct connection
110: insulation plate 120: conduction plate
124: uneven portion 126: first stopper
130: insulation bush 132: ring member
136: second stopper 140: fastening bolt
150: washer 160: locking hole
170: nut 180: outer plate
190: temperature sensor 192: sensing unit
194: locking portion 196: double-sided tape
198: connection part 200: monitoring part
210: power supply 220: data collection device
230: terminal 1000; Bus duct multi-point temperature monitoring system

Claims (10)

A plurality of temperature sensors respectively installed at a plurality of connecting portions connecting the bus ducts, and measuring a temperature of the connecting portion in a state in which a sensing unit for sensing a temperature is in contact with or not in contact with at least a portion of the connecting portion; And
Including; a monitoring unit that receives temperature information of each connection unit collected from the plurality of temperature sensors, and performs monitoring of temperature information and an alarm for temperature information outside a preset range,
It has a connection part enclosure surrounding the outside of the connection part, and the temperature sensor is coupled from the outside of the connection part enclosure and is inserted through the connection part enclosure, and is detachably coupled to a hollow part formed on one side of the connection part enclosure. ,
The multi-point temperature monitoring system of the bus duct, characterized in that the sensing unit of the temperature sensor is disposed to be exposed to the inside of the hollow portion formed in the connecting unit enclosure to measure the temperature inside the connecting unit enclosure. The method of claim 1,
The monitoring unit
A power supply device that supplies operating power to the temperature sensor,
A data collection device for collecting and transmitting temperature information from the plurality of temperature sensors,
A bus duct multi-point temperature monitoring system comprising a terminal configured to receive temperature information from the data collection device and perform an inquiry, and to set a normal range and perform an alarm function. The method of claim 1,
The monitoring unit
A bus duct multi-point temperature monitoring system, characterized in that for calculating an average value through temperature information collected by at least three or more temperature sensors, and performing an alarm when a difference between the temperature measured at an arbitrary connection and the average value is greater than a preset value. The method of claim 1,
The monitoring unit
A bus duct multi-point temperature monitoring system, characterized in that it performs an alarm when the temperature measured at an arbitrary connection is greater than a preset reference temperature. The method of claim 1,
The monitoring unit
A bus duct multi-point temperature monitoring system, characterized in that it performs an alarm when a temperature change value measured for a certain time at an arbitrary connection is greater than a preset value. delete In the temperature monitoring method of the multi-point temperature monitoring system using the multi-point temperature monitoring system according to any one of claims 1 to 5,
Measuring a temperature of a connection part through a temperature sensor installed in each of the connection parts;
Collecting temperature information measured by the connection unit;
Determining whether or not there is a temperature abnormality at each connection unit through the collected temperature information; And
The step of performing an alarm when there is a temperature abnormality after determining whether the temperature is abnormal. Temperature monitoring method of the bus duct multi-point temperature monitoring system comprising a. The method of claim 7,
The step of determining whether the temperature is abnormal,
Bus duct multi-point temperature monitoring system, characterized in that the average value is calculated through temperature information collected from at least three temperature sensors, and when the difference between the temperature measured at an arbitrary connection and the average value is greater than a preset value, it is determined to be above the temperature Temperature monitoring method. The method of claim 7,
The step of determining whether the temperature is abnormal,
A temperature monitoring method of a bus duct multi-point temperature monitoring system, characterized in that when a temperature measured at an arbitrary connection is greater than a preset reference temperature, it is determined to be above the temperature. The method of claim 7,
The step of determining whether the temperature is abnormal,
A temperature monitoring method of a bus duct multi-point temperature monitoring system, characterized in that when a temperature change value measured at a certain connection part for a certain period of time is greater than a preset value, the temperature is determined to be higher.

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