KR20150026244A - Apparatus and method for monitoring overheating of gis(gas insulated switchgear) and power cable connections - Google Patents

Abstract

Disclosed are an apparatus and a method for monitoring the overheating of a connection part of a gas insulated switchgear (GIS) and a power cable, in which the temperature of the connection part is collected by a temperature collection means installed on the connection part of the gas insulated switch gear and the power cable to manage the gas insulated switch gear. The disclosed apparatus for monitoring the overheating of the connection part of the gas insulated switchgear and the power cable comprises: a temperature measurement means which is installed on the connection part of the gas insulated switch gear and the power cable to measure the temperature of the connection part; a communication means which transmits the temperature of the connection part measured in the temperature measurement means through a local area network; and the temperature collection means which determines whether or not the connection part is overheated based on a preset temperature value and the temperature of the connection part received from the communication means.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas insulated switchgear, a gas insulated switchgear, and a power cable connection unit,

The present invention relates to an apparatus and method for monitoring overheating of a gas insulated switchgear and a power cable connecting unit, and more particularly, to a gas insulated switchgear for monitoring overheating of a connection portion of a gas insulation switchgear and a power cable of a substation, And methods.

The gas insulated switchgear installed in the power substation protects the system by safely opening and closing not only steady current opening and closing but also abnormal condition such as short circuit accident by applying the property of SF6 which is inert gas.

The gas insulated switchgear will fail if the connection to the power cable is overheated. In the event of a failure of the gas insulated switchgear, the power supply is interrupted due to the power failure of the substation.

In order to prevent this, a thermo tape is attached to the connection portion for sensing the temperature of the connection portion of the gas insulated switchgear and the power cable. The operator visually checks whether the temperature tape attached to the connection part is discolored during instantaneous inspection and monitors whether the connection part is overheated.

As another method, an infrared camera is used to photograph a connection part, and the captured image is analyzed to monitor whether or not the connection part is overheated.

However, in the conventional overheat monitoring method of the connection portion of the gas insulated switchgear and the power cable, there is a problem that the inspecting force and the inspection time are excessively required because the inspection is performed using the naked eye or the measuring equipment.

In addition, since the conventional overheat monitoring method of the connection between the gas insulated switchgear and the power cable is performed manually by the operator, the reliability of measurement is lowered, the blind point exists because there is no constant monitoring and alarm function, There is a problem in that it is impossible to quickly cope with a failure of the equipment, thereby causing an interruption in the power supply.

In addition, the overheat monitoring method of the connection portion of the conventional gas insulated switchgear and the power cable has a problem that the management manpower and the management time are excessively required due to the trend management through the manual operation of the operator.

Prior Art 1: Korean Patent Laid-Open No. 10-2012-0035502 (entitled "Power Cable Input / Output Device of Gas Insulated Switchgear") Prior Art 2: Korean Patent Laid-Open No. 10-2010-0002964 (titled: Remote Management System and Method for GIS Preventive Diagnosis System)

DISCLOSURE OF THE INVENTION It is an object of the present invention to provide a gas insulated switchgear which is provided with a gas insulated switchgear for collecting and managing the temperature of a connecting portion measured by a temperature measuring means provided at a connecting portion with a power cable, And an overheat monitoring device and method of the power cable connecting portion.

According to an aspect of the present invention, there is provided an apparatus for monitoring overheating of a gas insulated switchgear and a power cable connection unit, the apparatus comprising: temperature measuring means installed at a connection portion of a gas insulated switchgear and a power cable for measuring a temperature of a connection portion; Communication means for transmitting the temperature of the connection portion measured by the temperature measuring means through a local area network; And temperature collecting means for determining whether or not overheating of the connection portion has occurred based on the preset temperature set value and the temperature of the connection portion received from the communication means and generating an alarm.

The temperature measuring means is provided on the surface of the connecting portion to measure the surface temperature of the connecting portion.

The temperature collecting means displays the temperature change of the connecting portion on the basis of the temperature of the received connecting portion.

The temperature collecting means generates an alarm when it judges that the connection portion is overheated, and transmits an alarm to the predetermined administrator terminal or the scada system.

The temperature collecting means transmits the temperature of the connection portion received from the communication means to the manager terminal or the scada system.

According to another aspect of the present invention, there is provided a method for monitoring overheating of a gas insulated switchgear and a power cable connection unit, the method comprising: measuring a temperature of a connection portion between a gas insulated switchgear and a power cable; Transmitting the temperature of the connection unit measured by the communication unit through a local area network; And judging whether overheating of the connection portion has occurred or not based on the preset temperature set value and the temperature of the connection portion received from the communication means by the temperature collection means; And generating an alarm when it is determined by the temperature collecting means that the connection portion is overheated in the determining step.

In the step of measuring the temperature of the connection part, the temperature of the surface of the connection part is measured by the temperature measurement part.

The temperature collecting means displays the temperature change of the connecting portion on the basis of the temperature of the received connecting portion.

The step of generating an alarm includes the steps of generating an alarm when it is determined by the temperature collecting means that overheating of the connection portion has occurred; And sending the alarm to the predetermined administrator terminal or the scada system by means of the temperature collecting means.

And transmitting the temperature of the connection section received from the communication means to the manager terminal or the scada system by the temperature collecting means.

According to the present invention, an apparatus and method for monitoring overheating of a gas insulated switchgear and a power cable connecting unit automatically measure and transmit temperature of a gas insulated switchgear and a power cable connection unit, monitor an overheating of a connection unit by using the measured temperature, It is possible to maximize the efficiency of manpower management, to confirm the abnormal symptom in advance through trend management, and to improve the accuracy of the temperature measurement.

According to the present invention, an apparatus and method for monitoring overheating of a gas insulated switchgear and a power cable connection unit automatically measure temperature of a gas insulated switchgear and a power cable connection unit, It is possible to monitor the time constantly and to prevent the power outage failure by allowing the manager to quickly cope with the occurrence of overheating, thereby enabling the power equipment to be stably operated.

1 is a view for explaining an overheat monitoring apparatus for a gas insulated switchgear and a power cable connecting unit according to an embodiment of the present invention.
Fig. 2 is a block diagram for explaining the temperature collecting apparatus of Fig. 1; Fig.
FIGS. 3 to 5 are diagrams for explaining the output module of FIG. 2; FIG.
6 is a view for explaining a method of overheating a gas insulated switch and a power cable connecting portion according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for monitoring overheating of a gas insulated switchgear and a power cable connection unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a view for explaining an overheat monitoring apparatus for a gas insulated switchgear and a power cable connecting unit according to an embodiment of the present invention. FIG. 2 is a block diagram for explaining the temperature collecting apparatus of FIG. 1, and FIGS. 3 to 5 are views for explaining the output module of FIG.

As shown in FIG. 1, the overheat monitoring apparatus for a gas insulated switchgear and a power cable connection unit includes a plurality of temperature measuring means 120, a communication means 140, and a temperature collecting means 160. 1, a plurality of temperature measuring units 120 are connected to the communication unit 140, but the communication unit 140 and the temperature measuring unit 120 may be connected to each other. Of course, the temperature measuring means 120 and the communication means 140 may be constituted by one device.

The temperature measuring means 120 is installed at the connecting portion 30 of the gas insulated switchgear 10 and the power cable 20 to measure the temperature of the connecting portion 30. [ At this time, the temperature measuring means 120 is composed of a thermistor and is installed on the surface of the connecting portion 30. [ The temperature measuring unit 120 periodically measures the surface temperature of the connection unit 30 according to a predetermined measurement cycle (for example, approximately 1 minute to 10 minutes) and transmits the measured temperature to the communication unit 140. Here, the temperature measuring means 120 transmits the ID of the connecting portion 30 of the measurement object connection portion 30 to the communication means 140 together with the surface temperature.

The communication means 140 receives the surface temperature of the connection portion 30 from the plurality of temperature measurement means 120. The communication unit 140 transmits the surface temperature of the connection unit 30 to the temperature collection unit 160 via the near field communication. At this time, the communica- tion sensor transmits the surface temperature and the ID of the connection unit 30 to the temperature collection unit 160. [ Here, the communication unit 140 is configured as a terminal supporting short-range communication such as RFID, NFC, Zigbee, and Bluetooth.

The temperature collecting means 160 receives the surface temperature of the connection 30 via the communication means 140. That is, the temperature collecting means 160 receives the surface temperature of the connecting portion 30 from the communication means 140 via the local area network 200.

The temperature collecting unit 160 determines whether or not the connection unit 30 is overheat based on the predetermined temperature set value and the surface temperature. At this time, if the surface temperature is equal to or higher than the temperature set value, the temperature collecting means 160 determines that the connection portion 30 is overheated.

The temperature collecting means 160 generates an alarm on the basis of the determination result of the overheating occurrence of the connection portion 30. [ That is, when the temperature collecting means 160 judges that the connection unit 30 is overheated, it generates an alarm through a buzzer, lamp blink, or the like. At this time, if the temperature collecting unit 160 determines that the connection unit 30 is overheated, the temperature collecting unit 160 may transmit an alarm message to the administrator terminal 300 through a wired / wireless network 400 such as a mobile communication network, a LAN, or a WiFi. Here, the administrator terminal 300 may be configured as a laptop, a desktop, a smart phone, or the like.

The temperature collecting means 160 stores the received surface temperature separately for each connection unit 30. That is, the temperature collecting means 160 stores the separator (for example, name, unique number, etc.) of the connecting portion 30 and the surface temperature of the connecting portion 30 in association with each other.

The temperature collecting means 160 displays the surface temperature of the received connection portion 30 on the screen. That is, the temperature collecting unit 160 outputs the surface temperature of the received connection unit 30 in a text, a graph, or the like, and displays the current surface temperature of the connection unit 30 on the screen. At this time, the temperature collecting means 160 divides the surface temperature of each of the connection portions 30 and displays them on the screen.

The temperature collecting means 160 displays the surface temperature of the connection portion 30 on the screen according to the period trend and the surface temperature of the specific time according to the search condition. In other words, the temperature collecting means 160 may calculate a temperature trend (for example, year, month, day) indicating a change in the surface temperature of each connection unit 30 based on the pre- And displays the surface temperature at a specific time on the screen.

The temperature collecting means 160 may transmit the surface temperature and the alarm of the connection unit 30 to the SCADA system via the wired / wireless network 400. In this way, the surface temperature of the connection unit 30 and an alarm according to the occurrence of overheating can be confirmed in the scada system 500.

The temperature collecting means 160 sets the surface temperature measuring period and the temperature set value of the temperature collecting means 160. That is, the temperature collecting means 160 receives the measurement period and the temperature setting value from the manager terminal 300 through the wired / wireless network 400. The temperature collecting means 160 may directly receive the measurement period and the temperature set value from the manager. The temperature collecting means 160 transmits the measurement period of the set surface temperature through the local area network 200 to set the measurement period of the temperature measuring means 120. The temperature collecting means 160 changes the existing temperature setting value to the input temperature setting value.

2, the temperature collecting unit 160 includes a communication module 161, an input module 162, a setting module, a determination module 167, and an output module 166.

The communication module 161 transmits and receives data to and from the communication unit 140, the administrator terminal 300, and the Scada system 500. That is, the communication module 161 receives the surface temperature of the connection unit 30 from the communication unit 140 via the local area network 200. The communication module 161 transmits the measurement period to the communication unit 140 through the local area network 200. [ The communication module 161 transmits surface temperature related information of the connection unit 30 to the administrator terminal 300 and the scada system 500 through the wired / That is, the communication module 161 transmits an alarm to the administrator terminal 300 and the scada system 500 according to the surface temperature and the overheating of the connection unit 30 through the wired / wireless network 400.

The input module 162 includes a touch panel, a keyboard, and the like, and receives a measurement cycle, a temperature set value, a search condition, control information, and the like. The input module 162 transmits the measurement period and the temperature set value to the control module 163.

The control module 163 controls the communication module 161 to transmit the measurement period received from the input module 162 to the temperature measurement means 120. [ That is, the control module 163 transmits the measurement cycle received together with the measurement cycle transmission request message to the communication module 161.

The control module 163 controls the determination module 167 to change the preset temperature set value to the temperature set value received from the input module 162. [ That is, the control module 163 transmits the temperature setting value received from the input module 162 to the determination module 167 together with the temperature setting value update request message.

The control module 163 controls the output module 166 to display the surface temperature of the connection unit 30 received from the communication module 161. [ That is, the control module 163 transmits the connection unit 30 information and the surface temperature of the connection unit 30 to the output module 166 together with the screen output request message.

The control module 163 controls the storage module 164 to store the surface temperature of the connection unit 30 received from the communication module 161. That is, the control module 163 transmits the surface temperature of the connection unit 30 to the storage module 164 together with the storage request message.

The control module 163 controls the detection module 165 to detect the surface temperature of the connection unit 30 corresponding to the search condition received from the input module 162. [ That is, the control module 163 transmits the search condition to the detection module 165. [ The control module 163 receives the surface temperature of the connection unit 30 corresponding to the search condition from the detection module 165. [ The control module 163 controls the output module 166 to display the surface temperature of the connection portion 30 received from the detection module 165. [

The control module 163 controls the communication module 161 or the communication module 161 to transmit the alarm to the SCADA system according to the surface temperature of the connection 30 received from the detection module 165 and the overheat of the connection 30, .

The storage module 164 stores the surface temperature of the connection part 30 received from the control module 163. The storage module 164 is divided into the surface temperatures by the connection portions 30 and stored. At this time, the storage module 164 stores the ID, surface temperature, and measurement time of the connection unit 30 in association with each other.

The detection module 165 detects the surface temperature corresponding to the search condition received from the control module 163 from the storage module 164. That is, the detection module 165 receives the search condition including at least one of the ID and time of the connection unit 30 from the control module 163. The detection module 165 detects from the storage module 164 the surface temperature associated with at least one of the ID and time of the connection part 30 included in the received search condition. The detection module 165 transmits the detected surface temperature to the control module 163.

The output module 166 outputs the surface temperature of the connection unit 30 received from the control module 163. The output module 166 outputs the surface temperature together with the ID of the connection part 30 to display the current surface temperature of the connection parts 30. [ At this time, the output module 166 outputs the surface temperature in a text form (see FIG. 3), a graph form (see FIG. 4), and a trend form (see FIG. 5).

The output module 166 outputs the surface temperature corresponding to the search condition received from the control module 163. [ That is, the output module 166 outputs the surface temperature of the connection portions 30 at a specific time (or a specific time period). The output module 166 outputs the specific time and surface temperature of the particular connection 30.

The determination module 167 updates the temperature set value received from the control module 163 to the temperature set value according to the control of the control module 163. [ That is, upon receiving the temperature set value update request message from the control module 163, the determination module 167 updates the preset temperature set value to the temperature set value received from the control module 163.

The determination module 167 compares the surface temperature of the connection unit 30 input from the communication module 161 with the temperature setting value to determine whether or not the connection unit 30 is overheated. At this time, if the surface temperature of the connection unit 30 is equal to or higher than the temperature set value, the determination module 167 determines that the connection unit 30 is overheated.

The alarm module 168 generates an alarm when the determination module 167 determines that the connection portion 30 is overheated. At this time, the alarm module 168 generates an alarm to warn the occurrence of overheating of the connection unit 30 through a buzzer, lamp blink, or the like. The alarm module 168 may transmit an alarm message to the administrator terminal 300 through the wired / wireless network 400 such as a mobile communication network, a LAN, and a WiFi when the connection unit 30 is overheated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for overheating a gas insulated switchgear and a power cable connecting unit according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 6 is a view for explaining a method of overheating a gas insulated switchgear and a power cable connection part according to an embodiment of the present invention.

The temperature measuring means 120 measures the temperature of the connecting portion 30 of the gas insulated switchgear 10 and the power cable 20 (S100). That is, the temperature measuring unit 120 periodically measures the surface temperature of the connection unit 30 according to a predetermined measurement period (for example, about 1 minute to 10 minutes). The temperature measuring unit 120 transmits the surface temperature of the connection unit 30 measured through a communication module (not shown) or a separate communication unit 140 supporting the local area network 200 to the temperature collection unit 160 do. At this time, the temperature measuring means 120 transmits the ID of the connecting portion 30 of the measuring object connection portion 30 to the temperature collecting means 160 together with the surface temperature. Here, the temperature measuring means 120 may have a fixed measurement period, or may set the period inputted by the manager through the temperature collecting means 160 as a measurement period.

The temperature collecting unit 160 outputs the temperature of the connection unit 30 received by the temperature measuring unit 120 (S200). That is, the temperature collecting unit 160 collects the surface temperature of the connection unit 30 received from the temperature measuring unit 120 in a text form, a graph form, and a period (for example, Year, month, day) in the form of trend. At this time, the temperature collecting means 160 divides the surface temperature of each of the connection portions 30 and displays them on the screen. Here, the temperature collecting means 160 may display the surface temperature of the specific time according to the search condition on the screen of the temperature collecting means 160. The temperature collecting means 160 may transmit the surface temperature of the connection unit 30 to the SCADA system or the administrator terminal 300 via the wired and wireless network 400.

The temperature collecting unit 160 determines whether the connection unit 30 is overheat based on the temperature set value and the temperature of the connection unit 30 (S300). At this time, the temperature collecting means 160 judges that the connection portion 30 is overheated when the temperature (i.e., surface temperature) of the connection portion 30 is equal to or higher than the temperature set value.

If it is determined that the connection unit 30 is overheated (S400; YES), the temperature collecting unit 160 generates an alarm notifying the occurrence of overheating of the connection unit 30 (S500). That is, the temperature collecting unit 160 generates an alarm to warn that the connection unit 30 is overheated through the buzzer, the lamp blinking, or the like when the connection unit 30 is overheated. If it is determined that the connection unit 30 is overheated, the temperature collecting unit 160 transmits an alarm message to the administrator terminal 300 or the scada system 500 via the wired / wireless network 400 such as a mobile communication network, LAN, WiFi, Lt; / RTI >

As described above, the overheat monitoring apparatus and method for the gas insulated switchgear and the power cable connecting unit automatically measure the temperature of the gas insulated switchgear 10 and the connecting unit 30 of the power cable 20, ), It is possible to maximize the efficiency of manpower management compared with the conventional technique by the manual operation of the manager, to check the abnormality symptom in advance through the trend management, and to improve the accuracy of the temperature measurement There is an effect.

According to the present invention, the apparatus and method for overheating the gas insulated switchgear and the power cable connecting unit automatically measure the temperature of the gas insulated switchgear 10 and the connecting unit 30 of the power cable 20, ) Is monitored to generate an alarm, thereby enabling 24-hour monitoring at all times. In addition, it is possible to prevent a power outage failure by allowing a manager to quickly cope with overheating, thereby enabling stable operation of electric power facilities.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

10: Gas insulated switchgear 20: Power cable
30: connection part 120: temperature measuring means
140: Communication means 160: Temperature collecting means
161: communication module 162: input module
163: Control module 164: Storage module
165: Detection module 166: Output module
167: Judgment module 168: Alarm module
200: local area network 300: administrator terminal
400: Network 500: Scada System

Claims (10)

Temperature measuring means provided at a connecting portion of the gas insulated switch and the power cable to measure the temperature of the connecting portion;
Communication means for transmitting the temperature of the connection portion measured by the temperature measurement means through a local area network; And
And a temperature collecting means for determining whether or not overheating of the connecting portion has occurred based on the preset temperature set value and the temperature of the connecting portion received from the communication means and generating an alarm. monitor. The method according to claim 1,
Wherein the temperature measuring means comprises:
And a surface temperature of the connection portion is measured on the surface of the connection portion. The method according to claim 1,
The temperature collecting means
And displays the temperature change of the connection part on the basis of the temperature of the connection part. The method according to claim 1,
The temperature collecting means
And an alarm is generated when it is determined that the connection portion is overheated, and an alarm is transmitted to a predetermined administrator terminal or a scada system. The method according to claim 1,
The temperature collecting means
And transmits the temperature of the connection portion received from the communication means to the manager terminal or the scada system. Measuring the temperature of the junction of the gas insulated switch and the power cable by the temperature measuring means;
Transmitting the temperature of the measured connection via a local area network by a communication unit; And
Determining whether or not the connection portion is overheated on the basis of the predetermined temperature set value and the temperature of the connection portion received from the communication means by the temperature collection means; And
And generating an alarm by the temperature collecting means when it is determined that overheating of the connection portion is generated in the determining step. The method of claim 6,
In the step of measuring the temperature of the connection part
And the surface temperature of the connecting portion is measured by the temperature measuring means. The method of claim 6,
Wherein the temperature collecting means displays on the screen the temperature change of the connecting portion on the basis of the temperature of the received connecting portion. The method of claim 6,
The generating of the alert may comprise:
Generating an alarm when it is determined by the temperature collecting means that the connection portion is overheated; And
And sending an alarm to the predetermined administrator terminal or the Scada system by the temperature collecting means. The method of claim 6,
Further comprising the step of transmitting the temperature of the connection portion received from the communication means to the manager terminal or the scada system by the temperature collecting means.

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