KR20200069134A - Apparatus and method for automatically shutting off the recovery error of insulated gas - Google Patents

Abstract

Disclosed are a device for automatically blocking an insulated gas recovery error capable of automatically blocking motion gas recovery of a live wire section due to an error or mistake, and a method thereof. The device comprises a control board which blocks power supplied to a gas recovery system based on recovery error state information in a power supply section adjacent to a work section. The control board includes: a storage unit storing a wireless transmission unit wirelessly transmitting the recovery error state information; and a wireless reception unit receiving the recovery error state information from the wireless transmission unit.

Description

Apparatus and method for automatically shutting off the recovery error of insulated gas

The present invention relates to a device and method for cutting off insulating gas recovery errors, and more particularly, to an apparatus and method for automatically blocking an insulating gas recovery error of a gas insulated switchgear.

Gas Insulated Switchgear (GIS) is a device that cuts off electricity when a failure occurs in an electrical facility, and uses SF ₆ (Sulfur-hexafluoride) gas to secure insulation performance.

The gas insulated switchgear (GIS) must maintain a constant pressure of the insulating gas (SF ₆ ) to ensure insulating performance. If the pressure of the insulating gas SF ₆ falls below a certain pressure, an alarm is generated.

In order to maintain and repair the performance of the gas insulated switchgear (GIS), it is essential to recover the insulating gas when replacing equipment or performing internal inspections. In addition, an alarm is generated when the gas pressure of the gas insulated switchgear (GIS) is low, whether working or not.

If the gas in the live section is recovered due to an operator's mistake or mistake at the work site, the gas pressure in the gas insulated switchgear (GIS) in the live section is lowered, causing an alarm. At this time, if the worker or worker does not recognize the warning or there is no follow-up action, the pressure drop of the insulating gas is continuously generated. As a result, an insulation breakdown failure of the gas insulated switchgear (GIS) occurs, resulting in personal injury or power failure.

Prior art 1: Republic of Korea Patent Registration No. 10-0869006 (Gas insulation switchgear) Prior art 2: Republic of Korea Patent No. 10-1269020 (Inspection test method and device for gas insulation switchgear using dry air) Prior Art 3: Republic of Korea Patent Publication No. 10-2017-0117724 (Gas insulation switchgear insulating gas control device)

The present invention has been proposed to solve the above-described conventional problems, and an object thereof is to provide a device and method for cutting off insulation gas recovery errors that can automatically block the recovery of buses in a live section due to errors or mistakes.

In order to achieve the above object, the insulation gas recovery error vehicle cut-off device according to the preferred embodiment of the present invention cuts off the power supplied to the gas recovery device based on the recovery error state information in the power supply section adjacent to the work section. The control panel includes; and the control panel includes a storage unit for storing a radio transmission unit for wirelessly transmitting the recovery error status information, and a radio reception unit for receiving the recovery error status information from the radio transmission unit.

The control panel may display a current recovery error state when the power supply to the gas recovery device is cut off.

The recovery error state information may be generated as the power supply section is ungrounded and an alarm is generated due to a decrease in gas pressure in the power supply section.

The wireless receiver includes: a wireless receiver that receives recovery error status information from the wireless transmitter; A relay contact on/off by the wireless receiver; And an auxiliary relay operable to generate a power off signal for the gas recovery device when the relay contact is turned on.

The control panel may further include a cooler operation switch, and the control panel may cut off power to the gas recoverer based on whether the cooler operation switch is on or off and whether the recovery error status information is received.

The control panel may cut off the power to the gas recovery unit when the cooler operation switch is turned off and the recovery error state information is received.

The control panel may generate an alarm sound when the cooler operation switch is turned on and gas recovery from the gas recovery device is being performed.

The control panel, the cooler operation switch; A cooler relay having a first contact and a second contact that operate opposite to each other as the cooler operation switch operates; And a trip relay outputting a trip signal when the cooler operation switch is turned off so that the first contact is turned on and the recovery error status information is received.

The control panel may further include a power trip device that operates based on the trip signal to cut off the power supply to the gas recovery device.

The control panel may further include a recovery error lamp that displays a current recovery error condition based on the trip signal.

The trip relay may not output a trip signal even if the recovery error state information is received when the cooler operation switch is turned on and the first contact is turned off.

The control panel may generate an alarm when the cooler operation switch is turned on, the second contact is turned on, and gas recovery from the gas recovery device is performed, so that the load current of the gas recovery device is greater than or equal to a setting value.

The wireless transmission unit stored in the storage unit may be connected to a gas insulation switchgear of the power supply section through a connector.

On the other hand, the insulating gas recovery error cut-off method according to a preferred embodiment of the present invention, receiving the recovery error status information in the power supply section adjacent to the work section; And cutting off power supplied to the gas recovery device based on the recovery error state information.

According to the present invention having such a configuration, it is possible to automatically block the recovery of the mother gas in the live section due to errors or mistakes.

That is, by automatically stopping the gas recovery when a gas alarm occurs in the non-ground live section adjacent to the work section, it is possible to prevent the insulation breakdown of the gas insulation switchgear (GIS) due to the false recovery of the insulating gas of the power facility.

In addition, by preventing insulation breakdown of the gas insulation switchgear (GIS), it is possible to prevent human damage and power failure that could have occurred during insulation breakdown.

Automatic recognition and shutdown of power facility failure factors can be realized.

1 is a block diagram of a system to which an insulation gas recovery error vehicle cut-off device according to an embodiment of the present invention is applied.
FIG. 2 is a view showing the layout of an insulation gas recovery error vehicle cut-off device shown in FIG.
FIG. 3 is a control circuit diagram of the wireless transmission unit stored in the wireless transmission unit storage unit illustrated in FIG. 2.
FIG. 4 is a control circuit diagram of the wireless receiver shown in FIG. 2.
5 is a view for explaining the power supply to the wireless transmitter and the wireless receiver.
6 is an example of a terminal arrangement of a connector that connects a gas insulation switchgear (GIS) and a wireless transmitter.
7 is a control circuit diagram used in an insulation gas recovery error vehicle cut-off device according to an embodiment of the present invention.
8 is a flowchart for explaining a method for cutting off insulation gas recovery errors according to an embodiment of the present invention.
9 to 12 are explanatory diagrams of the operation of the insulation gas recovery error auto shut-off device employed in the description of FIG. 8.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail.

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

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

1 is a block diagram of a system to which an insulation gas recovery error vehicle cut-off device according to an embodiment of the present invention is applied.

The insulation gas recovery error vehicle cut-off device 20 according to an embodiment of the present invention is connected to a gas insulation switchgear (GIS) 10, 12 of a work section and a power supply section, and a gas recoverer 30.

Here, the gas insulated switchgear (GIS) 10 may be a device installed in the work compartment, and the gas insulated switchgear (GIS) 12 may be a device installed in the power supply compartment. Of course, it could be the opposite.

The work section and the power supply section can be distinguished by whether the equipment is grounded. The grounding facility can be defined as a facility in the diagonal section (ie, work section), and the non-grounding facility can be defined as a facility in the live section (ie, power supply section).

Gas insulation switchgear (GIS) (10, 12) may generate an alarm when the pressure of the insulating gas is lowered.

In addition, the gas insulated switchgear (GIS) 10 or 12 of the power supply section (live section) adjacent to the work section (diagonal section) may determine that the current state is abnormal based on the non-grounding and the alarm.

The gas insulated switchgear (GIS) 10 or 12 in the power supply section (live section) adjacent to the work section (diagonal section) displays the corresponding recovery error status information if the current status is abnormal, the insulation gas recovery error cut-off device ( 20) wirelessly. At this time, the gas insulated switchgear (GIS) 10 or 12 that wirelessly transmits the collection error state information includes a wireless transmission unit, which may be disposed outside through a connector. Meanwhile, the wireless transmission unit of the gas insulated switchgear (GIS) 10 or 12 that wirelessly transmits the recovery error state information may be stored in the storage unit of the insulation gas recovery error blocking device 20.

The insulation gas recovery error auto-blocking device 20 includes a control panel 60.

The control panel 60 wirelessly receives recovery error status information from the gas insulation switchgear (GIS) 10 or 12 of the power supply section (live section) adjacent to the work section (diagonal section). Accordingly, the control panel 60 includes a wireless receiver.

The control panel 60 may output a power cutoff signal for the gas recovery unit to cut off the power supplied to the gas recovery unit 30 based on the recovery error state information.

Then, when the power supply to the gas recovery unit 30 is cut off, the control panel 60 issues an alarm (that is, a recovery error lamp operation) indicating that the power supply is cut off due to a recovery error.

The gas recovery device 30 is connected to a gas insulation switchgear (GIS) in a work section (diagonal section) and a gas insulation switchgear (GIS) in a power supply section (live section) adjacent to the work section, and the corresponding gas insulation switchgear (GIS) ) To recover the insulating gas.

On the other hand, the gas recovery unit 30 stops the gas recovery because the internal solenoid valve (not shown) is turned off due to the interruption of the power supply from the insulation gas recovery error auto shut-off device 20.

2 is a view showing the layout of the insulation gas recovery fault vehicle cut-off device 20 shown in FIG. 1.

Insulation gas recovery error A buzzer (21) that outputs a predetermined alarm sound when the gas recovery unit (30) is operating while the gas recovery unit (30) is powered off or the cooler is in a single operation state at the front of the vehicle shutdown device (20), MCCB 22, which serves as a circuit breaker to cut off the power supply to the gas recovery unit 30, control power switch 23, which is a switch for power control of a control circuit (not shown) installed inside the corresponding insulation gas recovery error vehicle shut-off device , Current meter (24) for measuring the amount of current being used, lamp-integrated cooler (installed in the gas recovery unit 30; not shown), the operation switch switch, the cooler operation switch 25, gas insulation switchgear (GIS) (10 , 12) Storage unit 26 for storing the wireless transmission unit, Wireless reception unit 27 for wirelessly receiving recovery error status information from the wireless transmission unit of the gas insulated switchgear (GIS) (10, 12), MCCB (22) ) Is turned on (ON) to turn on the power lamp (28) to indicate the operating state, gas recovery operation lamp (29) to notify that the work is in progress, and when the power of the gas recovery unit (30) is cut off due to a recovery error It includes a recovery error lamp 31 for notifying this, a power input terminal 43 to which AC 380V (three-phase four-wire) power is input, and a power terminal 44 connected to the gas recovery unit 30.

Here, the wireless transmission unit of the gas insulation switchgear (GIS) 10, 12 stored in the storage unit 26 is made of a separate case and is connected to the gas insulation switchgear (GIS) 10, 12.

FIG. 3 is a control circuit diagram of the wireless transmission unit stored in the wireless transmission unit storage unit 26 shown in FIG. 2.

The wireless transmitter may be connected to the zone 50 of the gas insulated switchgear (GIS) 10, 12 from the outside of the gas insulated switchgear (GIS) 10, 12 through a connector.

The zone 50 includes a contact point (#1 BUS ES, #2 BUS ES, #1 BUS(DS) GAS comprehensive alarm, #2 BUS(DS) GAS comprehensive alarm).

#1 BUS ES is a contact point to inform whether or not the #1 busbar is grounded. If the #1 busbar is ground (diagonal), it is open, and if the #1 busbar is ungrounded (live), it is closed.

#2 BUS ES is a contact point to inform whether or not the #2 busbar is grounded. If the #2 busbar is ground (diagonal), it is open, and if the #2 busbar is ungrounded (live), it is closed.

The #1 BUS(DS) GAS general alarm is a contact point to alert the pressure drop of the insulating gas on the #1 busbar side (ie, gas insulated switchgear (GIS) (10 or 12)). When the pressure of is normal, it is opened, and when the pressure of the insulating gas on the #1 busbar side is lowered, it is closed. Here, an alarm is not generated when the contact of the #1 BUS(DS) GAS general alarm is opened, and an alarm occurs when the contact of the #1 BUS(DS) GAS general alarm is closed.

The #2 BUS(DS) GAS comprehensive alarm is a contact point to alert the pressure drop of the insulating gas on the #2 busbar side (i.e., gas insulated switchgear (GIS) (12 or 10)). When the pressure of is normal, it is open, and when the pressure of the insulating gas on the side of #2 busbar is lowered, it is closed. Here, an alarm is not generated when the contact point of the #2 BUS(DS) GAS general alarm is opened, and an alarm occurs when the contact point of the #2 BUS(DS) GAS general alarm is closed.

The wireless transmitter includes relays 32, 33 and a wireless transmitter 34.

The relay 32 and the relay 33 are connected to the zone 50 of the gas insulated switchgear (GIS) 10,12. That is, the relay 32 is connected to the output terminal (#1 BUS GAS Trip) of the #1 busbar side, and the relay 33 is connected to the output terminal (#2 BUS GAS Trip) of the #2 busbar side.

The relay 32 is an auxiliary relay for determining an insulation gas recovery error state on the #1 busbar side, and the relay 33 is an auxiliary relay for determining an insulation gas recovery error state on the #2 busbar side. In other words, the relay 32 is turned on when the #1 busbar is ungrounded and an alarm is generated due to the pressure drop of the insulating gas on the #1 busbar side. Here, that the relay 32 is turned on means that the #1 busbar side is in an insulated gas recovery error state. The relay 33 is turned on when the #2 busbar is ungrounded and an alarm is generated due to the pressure drop of the insulating gas on the #2 busbar side. Here, that the relay 33 is turned on means that the #2 busbar side is in an insulation gas recovery error state.

As the relay 32 or the relay 33 is turned on, the wireless transmitter 34 transmits the corresponding recovery error state information to the wireless reception unit 27 of the insulation gas recovery error blocking device 20. . Here, the recovery error state information will be one of information that the #1 busbar side is insulated gas recovery error status and #2 busbar side is insulated gas recovery error status.

According to FIG. 3 described above, when a gas alarm is generated due to the recovery of the insulating gas of the #1 bus or #2 bus, the bus side is in a non-grounded (closed) state. In this case, the relay 32 or the relay 33 is turned on. Accordingly, the wireless transmitter 34 determines that a recovery error has occurred on the corresponding bus side, and transmits the corresponding recovery error status information to the wireless reception unit 27 of the insulation gas recovery error blocking device 20.

4 is a control circuit diagram of the wireless receiver 27 shown in FIG. 2.

The wireless reception unit 27 may be installed in the insulation gas recovery error vehicle blocking device 20.

The wireless receiver 27 includes a wireless receiver 35, relay contacts 45, 46, and a relay 36.

The wireless receiver 35 receives recovery error status information for the #1 bus or #2 bus from the wireless transmitter 34.

The relay contacts 45, 46 are turned on/off by the wireless receiver 35. That is, the relay contact 45 is turned on (ON; close) when a #1 busbar recovery error occurs, and the relay contact 46 is turned on (ON; close) when a #2 busbar recovery error occurs.

The relay 36 operates according to the relay contact 45 or the relay contact 45 being turned on. That is, the relay 36 may be an auxiliary relay that helps to generate a gas cutoff signal when a gas recovery error occurs.

According to FIG. 4 described above, when the wireless receiver 35 receives recovery error status information for the #1 busbar or the #2 busbar from the wireless transmitter 34, it corresponds to one of the relay contact 45 and the relay contact 45. Turns the relay contact ON. Accordingly, relay 36 operates.

5 is a view for explaining the power supply to the wireless transmitter and the wireless receiver, Figure 6 is an example of the terminal arrangement of the connector for connecting the gas insulated switchgear (GIS) and the wireless transmitter.

AC-DC converters are used to supply the necessary power to the wireless transmitter and the wireless receiver.

In FIG. 5, the AC-DC converter converts the power of AC 220V into DC 24V and supplies it to the wireless transmitter and the wireless receiver 27.

And, the connector used for connection between the gas insulated switchgear (GIS) 10, 12 and the wireless transmitter may have a terminal arrangement as illustrated in FIG. 6.

7 is a control circuit diagram used in an insulation gas recovery error vehicle cut-off device according to an embodiment of the present invention. That is, the control circuit diagram of FIG. 7 can be said to be a circuit diagram for explaining the control panel 60.

In FIG. 7, AC 380V (three-phase four-wire) is used as a supply power of the gas recovery device 30.

AC 220V (single phase) is used as the power source for the control circuit.

MCCB serves as a circuit breaker to cut off the power supply to the gas recovery unit 30.

The SHT 37 is a voltage trip device, and blocks the MCCB based on whether the cooler operates (that is, on/off the cooler operation switch) and whether a gas recovery error occurs. That is, if the cooler is not in a single operation state (that is, the cooler operation switch is turned off), if the operator recovers or accidentally recovers gas from the live section, the SHT 37 blocks the MCCB based on the trip signal. (Ie off).

The ammeter (A-Meter; 38) measures the load current of the gas recovery unit 30 and operates the meta relay 42 when it is equal to or higher than the setting value.

The MCCB auxiliary contact block 39 turns on the power lamp 28 when the MCCB is turned on.

NFB is a circuit breaker for control circuit power.

The trip relay 40 transmits an operation signal (that is, a trip signal) to the SHT 37 for blocking the MCCB. Further, the trip relay 40 turns on the recovery error lamp 31.

The cooler operation switch (S/W) is a switch that is turned on by the user when the cooler operating when the gas pressure in the gas tank rises is in a single operation, that is, the recovery operation is stopped and the cooler is in a single operation. Here, the cooler is in the gas recovery unit 30, and operates to suppress a pressure rise when the gas of the gas recovery unit 30 is equal to or higher than a certain pressure.

When the cooler operation switch (S/W) is turned on (that is, closed), the cooler relay 41 operates, and the cooler operation lamp 47 is turned on. Here, the cooler operation switch (S/W) and the cooler operation lamp 47 also have a meaning to warn the user not to recover gas during the operation of the cooler. The fact that the cooler operation lamp 47 is lit has a meaning that the cooler is operating alone. When the user starts the recovery operation again, the cooler operation switch (S/W) must be turned off.

Further, the cooler relay 41 has two contacts 49 and 51 that operate in opposite directions. That is, when the cooler operation switch is turned on, the contact 49 is turned on (ON) and the contact 51 is turned off (open). Conversely, when the cooler operation switch is turned off, the contact point 49 is turned off (OFF) and the contact point 51 is turned on (closed). Here, the contact 51 may be the first contact described in the claims of the present invention, and the contact 49 may be the second contact described in the claims of the present invention.

Therefore, when the cooler operation switch is on, the contact point 51 of the cooler relay 41 is off, so even if the contact point 48 of the relay 36 is turned on, the trip relay 40 does not operate and thus a trip signal cannot be generated. Here, that the contact point 48 of the relay 36 is turned on means that abnormal gas recovery (that is, a recovery error) is being performed during a disconnection operation with a gas insulation switchgear (GIS) such as a ground wire.

Conversely, when the cooler operation switch is off, the contact 51 of the cooler relay 41 is turned on, so that when the contact 48 of the relay 36 is turned on, the trip relay 40 operates to generate a trip signal (that is, an operation signal). Will occur. When a trip signal occurs, the buzzer 21 sounds, the recovery error lamp 31 lights up, and the SHT 37 operates. As the SHT 37 operates, the MCCB is turned off, and the power supply to the gas recovery unit 30 is cut off.

On the other hand, when the cooler operation switch is off, since the contact point 49 of the cooler relay 41 is off, the buzzer 21 does not operate even when gas recovery is performed (that is, even if the contact point of the meta relay 42 is turned on).

The meta relay 42 operates by receiving the signal of the ammeter 38 to turn on the recovery lamp 29.

The buzzer 21 generates an alarm when gas recovery is performed in the cooler single operation state. That is, the buzzer 21 sounds an alarm when the contact point of the meta relay 42 is closed and the contact point 49 of the cooler relay 41 is turned on. Meanwhile, the buzzer 21 may also generate an alarm by a trip signal from the trip relay 40.

The following is a series of processes related to the general gas recovery operation in the work area.

First, the MCCB is turned on to drive the gas recovery unit 30.

As the gas recoverer 30 is driven, gas recovery is started for the gas insulated switchgear (GIS) of the connected work section, and when the gas recovery ends, the cooler operation switch is turned on. The cooler is inside the gas recoverer 30, and the cooler operates even during gas recovery, but the cooler operation switch is for indicating the cooler single operation state, and when the gas recovery is finished, the cooler operates alone, thereby turning on the cooler operation switch.

Thereafter, the connection with the gas insulated switchgear (GIS) connected to the gas recoverer 30 is released, and the other gas insulated switchgear (GIS) and gas collector 30 to be recovered are reconnected.

Then, the gas recovery is started and ended again, and an attempt is made to reconnect with another gas insulated switchgear (GIS).

In this way, gas recovery in the work section is performed.

This time, the operation of cutting off gas recovery when a gas alarm occurs in the power supply section (live section) adjacent to the work section will be described based on FIG. 7.

First, the user (worker) turns on the MCCB to drive the gas recovery unit 30.

As the gas recoverer 30 is driven, gas recovery to the gas insulated switchgear (GIS) of the power supply section (live section) connected thereto is started.

While the gas recovery from the gas recovery device 30 is being performed, the contact switch 49 of the cooler relay 41 is turned OFF by turning the cooler operation switch off, but the contact 51 is ON. ; close).

In this state, when a gas alarm in the live section occurs due to gas recovery to the gas insulated switchgear (GIS) in the power supply section (live section), the contact point 48 of the relay 36 is turned on (ON; close). Accordingly, the trip relay 40 operates to output a trip signal (operation signal). Here, outputting the trip signal means turning on the contact of the trip relay 40.

The SHT 37 is operated by the trip signal to turn off (OFF; open) the MCCB. Of course, the recovery error lamp 31 is lit by the trip signal to inform the current state (that is, the recovery error status).

As the MCCB is turned off, the power of the gas recovery unit 30 is cut off.

On the other hand, although the gas recovery should not occur during the single operation of the cooler, if the gas recovery is being performed during the single operation of the cooler, the buzzer 21 will operate to generate an alarm sound. That is, when the user turns on the MCCB and then turns on the cooler operation switch, the contact point 49 of the cooler relay 41 is turned ON (closed). At this time, as the MCCB is turned on, a gas recovery operation is performed in the gas recovery unit 30 so that the load current of the gas recovery unit 30 increases. Due to this, the ammeter 38 and the meta relay 42 operate sequentially, and the contact of the meta relay 42 (that is, the contact installed at the front end of the contact 49 in series with the contact 49) is turned on ( ON; close). Accordingly, the buzzer 21 sounds to generate an alarm sound. When the alarm sounds like this, the user (operator) turns off the cooler operation switch or stops gas recovery.

8 is a flowchart for explaining a method for cutting off insulating gas recovery errors according to an embodiment of the present invention, and FIGS. 9 to 12 are operation explanatory diagrams of an insulating gas recovery error cutting device used in the description of FIG. 8. .

First, an insulating gas recovery operation is performed in the operation section (diagonal section) (S10).

However, when the pressure of the insulating gas of the gas insulated switchgear (GIS) 10 or 12 in the power supply section (live section) adjacent to the work section (diagonal section) decreases, the corresponding gas insulated switchgear (GIS) (10 or 12) ) Generates an alarm as in FIG. 9 (S12).

Then, the corresponding gas insulated switchgear (GIS) 10 or 12 that has generated an alarm determines whether an abnormality occurs by combining the ground condition and the alarm (S14).

When it is determined that it is abnormal ("Yes" in S16), the corresponding gas insulated switchgear (GIS) 10 or 12, as shown in FIG. 10, recovers the error status information (that is, the stop signal of the recoverer) from the insulation gas recovery error. Wireless transmission is made to the wireless reception unit 27 of (20) (S18).

Insulation gas recovery error The vehicle cut-off device 20 receives the recovery error state information (that is, the recovery device stop signal) from the gas insulation switchgear (GIS) 10 or 12 (S20), and the power of the gas recovery device 30 Is blocked (S22) (see FIG. 11).

Accordingly, the gas recovery device 30 stops the gas recovery due to a power loss, and the insulation gas recovery error auto-blocking device 20 generates an alarm sound (S24) (see FIG. 12).

As described above, optimal embodiments have been disclosed in the drawings and specifications. Although specific terms are used herein, they are only used for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10, 12: Gas insulation switchgear (GIS)
20: insulation gas recovery error auto shut-off device
30: gas recovery machine

Claims (16)

It includes; a control panel for cutting off the power supplied to the gas recovery unit based on the information on the recovery error in the power supply section adjacent to the work section;
The control panel includes a storage unit for storing a wireless transmission unit for wirelessly transmitting the recovery error status information, and a wireless reception unit for receiving the recovery error status information from the radio transmission unit. . The method according to claim 1,
The control panel,
When the power supply to the gas recovery device is cut off, the current recovery error status is displayed. The method according to claim 1,
The recovery error state information is generated when the power supply section is ungrounded and an alarm is generated due to a decrease in gas pressure in the power supply section. The method according to claim 1,
The wireless receiver,
A wireless receiver that receives recovery error status information from the wireless transmitter;
A relay contact on/off by the wireless receiver; And
Insulating gas recovery error vehicle cut-off device comprising a; auxiliary relay that operates to generate a power-off signal of the gas recovery device when the relay contact is turned on. The method according to claim 1,
The control panel further includes a cooler operation switch,
The control panel cuts off the power supply to the gas recovery unit based on whether the cooler operation switch is turned on/off and whether the recovery error status information is received. The method according to claim 5,
The control panel,
When the cooler operation switch is turned off, and the recovery error state information is received, the insulation gas recovery error vehicle cut-off device is cut off, characterized in that the power to the gas recovery unit is cut off. The method according to claim 5,
The control panel,
An insulation gas recovery error auto-blocking device, characterized in that an alarm sound is generated while the cooler operation switch is turned on and gas recovery from the gas recovery machine is being performed. The method according to claim 1,
The control panel,
Cooler driving switch;
A cooler relay having a first contact and a second contact that operate opposite to each other as the cooler operation switch operates; And
And a trip relay outputting a trip signal when the cooler operation switch is turned off and the first contact is on and the recovery error status information is received. The method according to claim 8,
The control panel,
Insulating gas recovery fault vehicle cut-off device further comprises; a power trip device that operates based on the trip signal to cut off the power supply to the gas recovery device. The method according to claim 8,
The control panel,
Insulating gas recovery error vehicle cut-off device further comprises; a recovery error lamp for expressing the current recovery error state based on the trip signal. The method according to claim 8,
The trip relay,
When the cooler operation switch is turned on and the first contact is turned off, an insulated gas recovery fault vehicle cut-off device is characterized in that a trip signal is not output even if the recovery error state information is received. The method according to claim 8,
The control panel,
Insulation gas recovery error auto-blocking device characterized in that when the cooler operation switch is turned on, the second contact is turned on, and gas recovery from the gas recovery device is performed to generate an alarm when the load current of the gas recovery device is greater than or equal to a set value. . The method according to claim 1,
The wireless transmission unit stored in the storage unit is connected to the gas insulated switchgear of the power supply section through a connector. Receiving recovery error status information from the power supply section adjacent to the work section; And
And cutting off power supplied to the gas recovery unit based on the recovery error status information. The method according to claim 14,
The step of turning off the power,
Method for cutting off the insulation gas recovery error, characterized in that it displays a current recovery error state according to the power supply cut off to the gas recovery machine. The method according to claim 14,
The recovery error state information is generated as the power supply section is ungrounded and generated as an alarm occurs due to a decrease in gas pressure in the power supply section.

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