KR101694708B1 - Booth bar for temperature sensing and control - Google Patents

Abstract

Disclosed is an incoming and distribution board for sensing and controlling a temperature by using a bus bar. The incoming and distribution board includes an electric device, a plurality of bus bars connected to the electric device, an external case which includes an inner space in which the plurality of bus bars are installed, and a housing which includes a door which is installed in the external case to open or close the external case. Each of the plurality of bus bars detects and controls the temperature and humidity. Accordingly, the present invention can efficiently distribute power by receiving the power from a power plant.

Description

Switchboard for detecting and adjusting temperature using busbar {omitted}

The present invention relates to a switchboard. More particularly, to a power system that efficiently receives power from a power plant using a busbar with temperature sensing and regulation.

Since the switchgear is standardized by a certain design rule, the flexibility of the equipment is low and the replacement of the switchboard or the extension of the transformer is relatively difficult and the live part is put in the metal case. There is a difficult point without.

In order to improve the efficiency and stability of power use as the power consumption increases, researches on efficient management of the switchgear, switchboard, high - voltage, low - voltage, and distribution boards are increasing.

In this regard, Korean Patent No. 10-0809910 discloses a digital distribution board. The disclosed digital distribution board measures various kinds of status information of the present distribution panel together with the calculation of the amount of electric power and the like by measuring the leakage current state, the insulation resistance value, the overcurrent state and the temperature change of the bus bar of the distribution board connected to the multiple feeders in real time And a digital distribution board for performing an alarm and a blocking operation in the abnormal state. However, such a digital distribution panel can not accurately detect the load and the breaker connected to the maintenance requiring maintenance in the case of a load requiring maintenance, and thus it is difficult to perform the maintenance work quickly. In other words, accidents occur frequently due to misidentification of a circuit breaker connected to a load that does not require maintenance due to a mistake by a field worker. Accordingly, hospitals and data centers that are required to supply electricity at all times suffer property damage, and seriously, there are serious problems such as human accidents.

Korean Patent No. 10-0809910

The present invention relates to a power system for efficiently receiving power from a power plant using a bus bar having a temperature sensing and control function.

According to an aspect of the present invention, there is provided an electric device, an electric device, a plurality of busbars connected to the electric device, an outer case having an inner space through which the plurality of busbars can be installed,

And at least one of the plurality of busbars includes at least one of a temperature and humidity detection module 360, a controller 370, and a temperature / humidity control module 380. The temperature / The temperature and humidity detection module 360 includes a sensor unit 362 including a first temperature and humidity sensor 364 and a second temperature and humidity sensor 365. The first temperature / And a second temperature / humidity sensor (365) detects the temperature of the bolting engagement portion where the plurality of bus bars are engaged with the electric device, the second temperature / humidity sensor (365) being installed on an aluminum heat sink attached to the bar to detect the temperature of the middle portion of the plurality of bus bars The first and second temperature and humidity sensors 364 and 365 receive the temperature and humidity data measured by the first and second temperature and humidity sensors 361 and 362, respectively, And the temperature and humidity data is corrected in consideration of the temperature and humidity data measured by the second temperature and humidity sensor 365. The temperature and humidity control module 380 controls the temperature and humidity data And a reference setting unit 384 for setting a reference temperature for driving the Peltier element 382 based on an input from a user. The Peltier element 382 controls the temperature of the Peltier element 382, The control unit 370 compares the temperature and humidity data sensed and corrected by the temperature and humidity detection module 360 with the temperature set by the reference setting unit 384 and outputs a Peltier device driving signal to the Peltier device driving unit 375, and the Peltier element driving unit 375 outputs the current direction of the Peltier element 382 to the insulator on the basis of the Peltier element driving signal The switchgear, characterized in that the adjustment so as to generate a group are provided.

According to the present invention, a stable power distribution system can be constructed by controlling temperature and humidity of a switchboard.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an example of a configuration of a wristband including a busbar applied to the present invention. Fig.
FIG. 2 shows an example of a system for a switchboard according to the present invention.
3 is an example of a block diagram showing a configuration of a bus bar included in a switchboard according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in order to clearly illustrate the present invention in the drawings, portions not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar components.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing an example of a configuration of a wristband including a busbar applied to the present invention. Fig.

Referring to FIG. 1, a switching board is provided with a switch or an overcurrent protector or an instrument, and a steel plate is generally used, and a plastic plate is also used depending on the application.

The switchboard is covered with a metal plate, a wire net, and an insulating plate to enhance the safety. The safety regulations generally include wool or insulated covers to prevent electric shock in the charging parts of electrical machinery.

The switchboard has a main circuit switchboard and a control switchboard. The main switchboards for business or private substations are the main switchboards, and the switchboards for modern power plants are switchboards for control. There are operating levers for opening and closing circuit breakers of high voltage main circuit, pneumatic switch of low voltage main circuit, voltmeter, ammeter, power meter, integrated power meter, eddy current relay and the like.

The distribution board is a device for branching and wiring again the trunk line wired in the switchboard. The distribution boards are made up of very simple ones, in which cut-out switches or knife switches are arranged on a plate, and a plurality of branch switches, a security device and a bus bar are mounted, and a plurality of unit switches are housed in a box made of steel plate.

The incoming panel refers to the attachment or acceptance of main switchgear, parking terminals, measuring instruments, etc. to receive power from the utility company

The switchgear is used to safely install various instruments, control switches, protective relays, etc. in the metal enclosure before the installation of the switchgear. The switchgear panel is generally used for easy maintenance and reliability, and has a small installation area. Since the structure is simple, it is compact and easy to maintain, and all high-voltage equipment is put in a grounded metal box, so that it is possible to easily extend the facilities without causing fire or damage due to user's electric shock or malfunction.

The supervisory control in the switchboard monitors the voltage, current, power, and frequency of the power system, displays the history and real time, and is a control system that can smoothly monitor the power system from the center. Control is introduced and controlled.

Now, a switching and distribution system according to the present invention will be described.

FIG. 2 shows an example of a system for a switchboard according to the present invention.

Referring to FIG. 2, the switchboard system 200 includes a special module 210, an MCC 220, a power module 230, and a distribution panel 240.

Special class (210) is also called special high pressure class.

The special class 210 may be an extra high voltage closed switchboard. A metal enclosed switchgear accommodates main circuit equipment and surveillance controls, and covers the front, rear, left, right and top surfaces of the outer periphery with a grounded metal wall. The closed switchboard used for the AC power circuit has low voltage (AC 600V or less), high voltage (over 600V) and special high voltage (over 7kV) depending on the main circuit voltage. A low-voltage switchboard is also called a load center or control center. According to the present invention, the low-voltage switchgear encloses a low-capacity drawer-type air circuit breaker in three stages.

A vacuum circuit breaker (VCB) having an excellent breaking performance is embedded in the special module 210. VCB is a device that opens and closes the converter. According to the special module 210 of the present invention, there is an effect of reducing scraping, and wiring efficiency is realized.

The MCC (Motor Control Center, 120) is also referred to as the motor control board. Control to prevent fire or electric shock accident.

The MCC 220 may be a centralized motor control system.

The MCC 220 may be a power central monitoring and control board.

It includes MCC (220), shares some functions with RTU, and functions independently of RTU. It can monitor, control and measure substation facility even when SCADA terminal is fixed.

The MCC 220 may further include a instrumentation control system. The instrumentation control system arranges or installs a measurement and control system suitable for the process of measuring and instrumenting instruments. It also includes computers, DCS, PLC, and MMI for analyzing state monitoring and control information. Realize the proper operation of the facility and check the temperature, flow rate and pressure components.

The MCC 220 may further include a MOS central control unit. This monitors the conditions and conditions in the system. It collects, analyzes, and processes information by transmitting and receiving operation status, operation signal and measurement data to DDC through a gateway. Monitor operation status, measurement data and alarm output.

The power module 230 provides power, and the power distribution board 240 distributes the supplied power.

The booth bar having the temperature sensing and adjusting function according to the present invention is installed in at least one of the special panel 210, the MCC 220, the power panel 230, and the panel 240 in the switchboard 200.

FIG. 3 is a block diagram showing an example of a configuration of a bus bar according to the present invention, and FIG. 4 shows an example of a bus bar included in a switchboard according to the present invention.

3, the switchboard 300 includes an electric device, a plurality of busbars connected to the electric device, an outer case having an inner space into which a plurality of busbars can be installed, a door installed in the outer case to open and close the outer case, (Not shown).

The switchboard 300 controls the temperature and humidity using a pump 320 that supplies outside air into the housing. The pump 320 includes a filter for removing dust in the air supplied to the housing.

The switchboard 300 includes a bus bar 350 according to the present invention in at least one of a distribution board, a power source, a circuit breaker, a control panel, a battery, and an electric switchboard. A busbar is a round bar for hanging objects to be plated when plating rod-shaped metal to induce high currents.

The bus bar 350 is connected to a built-in server to set a reference temperature, detect the temperature, and adjust the temperature and humidity on the basis of the detected temperature to prevent overheating.

The bus bar 350 is pipe-shaped. Elements are provided inside the pipe.

A plurality of bus bars 350 are provided.

The bus bar 350 includes a temperature / humidity detection module 360, a controller 370, and a temperature / humidity control module 380. The temperature and humidity detection module, the control unit, and the temperature control module are provided for each bus bar 350.

The temperature / humidity detection module 360 includes a noncontact semiconductor type integrated temperature / humidity sensor portion 362.

For example, the sensor portion 362 is installed between the upper surface of the insulator and the bottom surface of the joint portion of the bus bar. The sensor unit 362 senses the temperature of the bus bar 350 at predetermined time intervals or in real time. At this time, the temperature value sensed by the temperature sensor can be converted into a digital signal by an analog-digital converter and processed.

As another example, the sensor unit 362 includes a first temperature / humidity sensor 364 and a second temperature / humidity sensor 365.

The first temperature and humidity sensor 364 is installed on an aluminum heat sink attached to the bus bar. The first temperature / humidity sensor 364 detects the temperature of the middle portion of each of the plurality of bus bars and is also referred to as a body temperature detector.

The temperature and humidity sensor control unit is connected to the first temperature and humidity sensor 364 and controls power supply to the first temperature and humidity sensor 364 and receives temperature and humidity data measured by the first temperature and humidity sensor 364.

The second temperature / humidity sensor 365 is provided in a coupling portion inside the power / distribution panel, and is also called a coupling portion temperature detection portion. The second temperature / humidity sensor 365 detects the temperature of the bolting engagement portion where the plurality of bus bars are engaged with the electric device.

The second temperature / humidity sensor 365 is fixed to the plurality of bus bars by the bolts of the bolting joints, and the metal sheath is provided with an installation groove on the inner side. Two metal conductors of different types are connected to the ends of the metal sheath, A thermocouple, and an insulating material filled in the mounting groove of the metal sheath to insulate the metal sheath and the thermocouple.

The temperature and humidity sensor control unit is connected to the second temperature and humidity sensor 365 and controls power supply to the second temperature and humidity sensor 365 and receives temperature and humidity data measured by the second temperature and humidity sensor 365.

The temperature and humidity sensor control unit receives temperature and humidity data measured by the first temperature and humidity sensor 364 and receives temperature and humidity data measured by the second temperature and humidity sensor 365, And the temperature and humidity data are corrected in consideration of the temperature and humidity data measured by the second temperature / humidity sensor 365.

For example, the temperature and humidity sensor control unit generates reference signals for the first and second temperature and humidity sensors 364 and 365, and calculates a reference signal for each temperature by considering the number of missing values of the data sensed by the temperature / And humidity data.

In another example, when the number of the missing values of the sensor data extracted from one of the first temperature / humidity sensor 364 and the second temperature / humidity sensor 365 exceeds a preset reference value, the temperature / humidity sensor controller removes the data, Correct the data.

As another example, the temperature / humidity sensor control unit performs pre-processing including at least one of data sensed by the first temperature / humidity sensor 364 and the second temperature / humidity sensor 365, and compression, normalization, or symbolization for each reference signal, More specifically, the sensor data are normalized using the mean and variance of the reference signals, the sensor values and the reference signals of the normalized sensor data are symbolized into a plurality of symbols according to a predetermined sensor value range, A distance table is created using the sensor data and the reference signal, a classification and regression tree (CART) algorithm is applied to the distance table, and a Gini Index derived from the application of the CART algorithm is set to a value The temperature and humidity data are corrected with the sensor value equal to or greater than the threshold value.

The temperature and humidity control module 380 includes a Peltier element 382.

The Peltier element 382 radiates cold air on one side in accordance with the current direction, generates heat on the other side on the other side, and adjusts the endothermic or calorific value according to the amount of current.

The Peltier element 382 is installed between the bottom surface of the insulator and the upper surface of the insulator fixing body.

The Peltier element 382 is driven when receiving a drive signal, and the direction of current is adjusted in advance to generate cool air in the insulator.

The temperature and humidity control module 380 includes a reference setting portion 384. The reference setting unit 384 sets a reference temperature for driving the Peltier element 382 based on the input from the user.

The temperature and humidity control module 380 includes a constant temperature and humidity section 390 or an exhaust section 395.

The constant temperature and humidity section (390) controls the temperature and humidity inside the switchgear

The exhaust portion 395 exhausts the air inside the switchgear.

The exhaust portion 395 is connected to the pump 320. The exhaust unit 395 controls the temperature and humidity using a pump 320 that supplies outside air to the inside of the housing. The pump 320 includes a pump including a filter that removes dust in the air supplied to the housing.

The control unit 370 is connected to a temperature / humidity / humidity sensing module 360 and a temperature / humidity control module 380. The control unit controls the temperature / humidity detection module 360 and the temperature / humidity control module 380.

The control unit 370 outputs a Peltier element drive signal when the temperature and humidity sensed by the temperature / humidity detection module 360 is higher than the temperature set by the reference setting unit 384. At this time, the output drive signal is transmitted to the Peltier device driver 375.

The Peltier element drive unit 375 drives the Peltier element based on the Peltier element drive signal. ?

The control unit controls the constant temperature and humidity unit 390 and the exhaust unit 395 with the correction data obtained from the temperature / humidity detection module.

The control unit 370 determines that the temperature rise of the booth bar is caused by the overcurrent and generates an alarm signal when the detection current of the booth bar whose detection temperature exceeds the upper temperature limit value exceeds the reference current value, To supply outside air into the housing.

The optical cable is connected to the temperature and humidity detection module 360 of each of the plurality of bus bars 350 to transmit the optical signal transmitted from the local optical communication unit of each of the plurality of bus bar temperature and humidity detection modules 360 to the main optical communication unit of the control unit 399, In a single-loop manner, the local optical communication unit and the main optical communication unit of the control unit 370. [

As another example, the bus bar 350 includes a battery or is connected to a battery.

The battery supplies power to the temperature / humidity sensor and the temperature / humidity sensor control unit.

As another example, the busbar 350 may be connected to the server in a wired or wireless manner.

The server is installed in the switchboard and connected to the temperature control unit by wire or wireless, receives the temperature change data of the busbar, and transmits the temperature change data to the temperature control unit at the request of the temperature control unit.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention as defined by the appended claims. Should be regarded as belonging to the above-mentioned patent claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. But is not limited thereto.

In the above-described exemplary system, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders . It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.

Claims (6)

In the switchboard system 200,
A special high-voltage enclosed switchboard (210) which accommodates the main circuit device and the surveillance control device, covers the front, rear, left, right and top surfaces of the periphery thereof with a grounded metal wall and has a vacuum circuit breaker (VCB) built therein to open and close the converter;
And a MCC (Motor Control Center) 120 for controlling the motor so as to prevent a fire or an electric shock accident,
The MCC including a computer for analyzing the state of the motor and analyzing the control information; And a central control unit for monitoring conditions and conditions in the instrumentation control system, transmitting and receiving operation conditions, operation signals and measurement data through a gateway, collecting, analyzing and processing information,
The special high-voltage closed switchboard and the bus bar having the temperature sensing and control function are installed in the MCC
The booth bar includes a temperature / humidity detection module 360, a controller 370, and a temperature / humidity control module 380,
The temperature / humidity detection module 360 includes a sensor portion 362 composed of a first temperature / humidity sensor 364 and a second temperature / humidity sensor 365,
The first temperature and humidity sensor 364 is installed on an aluminum heat sink attached to the bus bar to detect the temperature of the middle portion of the bus bar,
The second temperature / humidity sensor 365 detects the temperature of the bolt coupling part to which the bus bar is coupled,
The first and second temperature and humidity sensors 364 and 365 are connected to the temperature and humidity sensor controller,
The temperature and humidity sensor control unit receives temperature and humidity data measured by the first and second temperature and humidity sensors, respectively, and detects the number of missing values of data extracted from one of the first and second temperature and humidity sensors 364 and 365 If the preset reference value is exceeded, the data is removed to correct the temperature and humidity data,
The temperature and humidity sensor control unit generates a reference signal for each of the first and second temperature and humidity sensors 364 and 365, and performs at least one of compression, normalization, and symbolization on the corrected temperature and humidity data and the reference signal. And normalizing the corrected temperature and humidity data using the mean and variance of the reference signal and outputting the normalized data and the reference signal to a plurality of symbols a distance table is generated using the symbolized data and the reference signal, a classification and regression tree (CART) algorithm is applied to the distance table, and a result of applying the CART algorithm The temperature and humidity data are recalibrated with sensor values having a derived Gini Index equal to or greater than a predetermined value,
The temperature and humidity control module 380 may include a Peltier element 382 that emits cool air from one side and generates heat on the other side according to the current direction and adjusts the amount of heat absorbed or calorific value according to the amount of current and a Peltier element 382, And a reference setting unit 384 for setting a reference temperature for driving the temperature sensor 382,
The control unit 370 compares the temperature and humidity data recalibrated by the temperature and humidity detection module 360 with the temperature set by the reference setting unit 384 and outputs a Peltier device driving signal to the Peltier device driving unit 375 ,
Wherein the Peltier element driving unit (375) adjusts the current direction of the Peltier element (382) so as to generate cold air to the insulator based on the Peltier element driving signal to adjust the temperature and humidity.
The apparatus according to claim 1, wherein the second temperature / humidity sensor (365)
A metal sheath fixed to the bus bar by a bolt of a bolting engagement portion and provided with an installation groove on the inside thereof,
A thermocouple in which two metal conductors of different types are connected to ends of the two metal conductors and are inserted into the installation groove of the metal sheath; And
And an insulating material filled in an installation groove of the metal sheath to insulate the metal sheath and the thermocouple.
The method according to claim 1,
The temperature and humidity control module 380 further includes an exhaust unit 395
The controller 370 determines that the temperature rise of the booth bar is due to the overcurrent when the detected temperature of the bus bar exceeds the upper temperature limit value and outputs an alarm signal to the exhaust unit 395 ),
And the exhaust part (395) operates the pump based on the alarm signal to supply the outside air into the housing.
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