KR102302488B1 - Automatic ventilation system, method for controlling automatic ventilation, remote control system for automatic ventilation system and remote control method for automatic ventilation system - Google Patents

Abstract

Embodiments relate to an automatic ventilation system, method for controlling automatic ventilation, a remote control system for an automatic ventilation system, and a remote control method for an automatic ventilation system. An automatic ventilation system of a transformer room according to the embodiment includes: a lower damper which sucks air outside the transformer room; an upper damper which discharges air inside the transformer room; an overhead door which sucks air outside the transformer room; a temperature sensor which measures a temperature inside the transformer room; a control unit which controls at least one of the lower damper, the upper damper, and the overhead door to be in an open state or a closed state according to the measured temperature; and a wire mesh door which is disposed in front of the overhead door.

Description

AUTOMATIC VENTILATION SYSTEM, METHOD FOR CONTROLLING AUTOMATIC VENTILATION, REMOTE CONTROL SYSTEM FOR AUTOMATIC VENTILATION SYSTEM AND REMOTE CONTROL METHOD FOR AUTOMATIC VENTILATION SYSTEM }

The embodiment relates to an automatic ventilation system, an automatic ventilation control method, a remote control system of an automatic ventilation system, and a remote control method of an automatic ventilation system, and more particularly, to a system and method capable of automatically ventilating internal air of a transformer room .

When the transformer is operated, the iron core and windings generate heat due to no-load loss or load loss. In this case, if the temperature rise limit set by the standard is exceeded, the insulation inside the transformer is oxidized or hardened, and the efficiency of the transformer is lowered. Therefore, in order to prevent shortening of the life of the transformer due to the temperature rise, a device for discharging heat generated while the transformer is operated to the outside is required in the transformer room.

In general, a natural ventilation method using an upper damper and a lower damper or a natural ventilation method using an overhead door is adopted in order to lower the internal temperature of the transformer room.

However, the natural ventilation method using the upper damper and the lower damper has a problem in that the temperature lowering ability of the transformer room is insufficient when the load of the transformer is increased. In addition, the natural ventilation method using the overhead door has a problem in that it is impossible to control the normally open state due to the intrusion of small animals into the transformer room.

In addition, since there is no system for automatically or remotely controlling the upper damper, lower damper, and overhead door in the conventional transformer room, in the case of a transformer provided in an unmanned substation, it is possible to quickly cope with the temperature rise of the transformer. There was a problem that there wasn't.

Republic of Korea Patent Publication No. 10-2020-0012204

The embodiment is intended to overcome the above-described problems, and the automatic ventilation system, the automatic ventilation control method, the remote control system of the automatic ventilation system, and the remote control method of the automatic ventilation system according to the embodiment automatically control the ventilation of the transformer room or By remote control, the purpose is to prevent a large blackout due to overload of the transformer and failure of auxiliary equipment.

The technical problems to be achieved by the embodiment are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art from the description of the embodiment.

The embodiment is an automatic ventilation system for a transformer room, a lower damper for sucking in air outside the transformer room, an upper damper for exhausting air inside the transformer room, an overhead door for sucking in air outside the transformer room, and the transformer A temperature sensor for measuring a temperature inside the chamber, a controller for controlling at least one of the lower damper, the upper damper, and the overhead door to an open state or a closed state according to the measured temperature, and the overhead door It may include a wire mesh door disposed on the front of the.

Also, when the measured temperature is less than 35° C., the controller according to an embodiment may control the overhead door to be closed and the lower damper and the upper damper to be opened.

Also, when the measured temperature is 40° C. or higher, the controller according to an embodiment may control the overhead door to be in an open state, and may control the lower damper and the upper damper to an open state.

In addition, the control unit according to the embodiment, when the measured temperature is 35 ℃ or more and less than 40 ℃, when the measured temperature falls from a temperature of 40 ℃ or more, the overhead door, the lower damper, and the upper The damper can be controlled in the open state.

In addition, the control unit according to the embodiment, when the measured temperature is 35 ℃ or more and less than 40 ℃, when the measured temperature rises from a temperature of less than 35 ℃, control the overhead door to the closed state, the The lower damper and the upper damper may be controlled in an open state.

In addition, the temperature sensor according to the embodiment may be a thermocouple thermometer.

In addition, the control unit according to an embodiment may control the wire mesh door to an open state or a closed state.

An embodiment is an automatic ventilation control method performed by an automatic ventilation system of a transformer room, wherein the automatic ventilation system includes a lower damper for intake air outside the transformer room, an upper damper for exhausting air inside the transformer room, and the transformer An overhead door for inhaling air from outside the room, a temperature sensor for measuring a temperature inside the transformer room, and according to the measured temperature, at least one of the lower damper, the upper damper, and the overhead door is opened. or a control unit for controlling in a closed state, and a wire mesh door disposed on the front side of the overhead door, wherein the automatic ventilation control method, when the measured temperature is less than 35 °C, the control unit, the overhead door controlling the closed state, controlling the lower damper and the upper damper to the open state, and when the measured temperature is 40° C. or higher, the controller controls the overhead door to the open state, and the lower It may include controlling the damper and the upper damper to an open state.

In addition, the automatic ventilation control method according to the embodiment, when the measured temperature is 35 ℃ or more and less than 40 ℃, when the measured temperature falls from a temperature of 40 ℃ or more, the control unit, the overhead door, the The method may further include controlling the lower damper and the upper damper to an open state.

In addition, in the automatic ventilation control method according to the embodiment, when the measured temperature is 35 ° C or more and less than 40 ° C, when the measured temperature rises from a temperature of less than 35 ° C, the control unit closes the overhead door and controlling the lower damper and the upper damper to an open state.

An embodiment is a remote control system of an automatic ventilation system, wherein the remote control system includes an automatic ventilation system of a transformer room, a supervisory control and data acquisition (SCADA) receiving open/close status information from the automatic ventilation system, and the SCADA from the and a power station for monitoring the opening/closing state information and remotely controlling the automatic ventilation system, wherein the automatic ventilation system includes a lower damper for inhaling air outside the transformer room, and an upper portion for exhausting air inside the transformer room. At least one of a damper, an overhead door that draws in air outside the transformer room, a temperature sensor that measures a temperature inside the transformer room, and the lower damper, the upper damper, and the overhead door according to the measured temperature It may include a control unit for controlling the open state or the closed state, and a wire mesh door disposed in front of the overhead door.

Also, when the measured temperature is less than 35° C., the controller according to an embodiment may control the overhead door to be closed and the lower damper and the upper damper to be opened.

Also, when the measured temperature is 40° C. or higher, the controller according to an embodiment may control the overhead door to be in an open state, and may control the lower damper and the upper damper to an open state.

In addition, the control unit according to the embodiment, when the measured temperature is 35 ℃ or more and less than 40 ℃, when the measured temperature falls from a temperature of 40 ℃ or more, the overhead door, the lower damper, and the upper The damper can be controlled in the open state.

In addition, the control unit according to the embodiment, when the measured temperature is 35 ℃ or more and less than 40 ℃, when the measured temperature rises from a temperature of less than 35 ℃, control the overhead door to the closed state, the The lower damper and the upper damper may be controlled in an open state.

In addition, the temperature sensor according to the embodiment may be a thermocouple thermometer.

In addition, the control unit according to an embodiment may control the wire mesh door to an open state or a closed state.

In addition, the automatic ventilation system according to an embodiment may be manually controlled by remote control of the geupjeon branch.

An embodiment is a remote control method of an automatic ventilation system of a transformer room performed by a remote control system, wherein the remote control system includes an automatic ventilation system of a transformer room, a Supervisory Control And Data Acquisition (SCADA), and a power station, The automatic ventilation system includes a lower damper for taking in air outside the transformer room, an upper damper for exhausting air inside the transformer room, an overhead door for sucking in air outside the transformer room, and the temperature inside the transformer room. A temperature sensor that measures, a control unit that controls at least one of the lower damper, the upper damper, and the overhead door to be opened or closed according to the measured temperature, and disposed on the front surface of the overhead door A wire mesh door, wherein the remote control method includes: receiving, by the SCADA, open/closed state information of at least one of the lower damper, the upper damper, and the overhead door from the automatic ventilation system; A, it may include the step of determining whether the automatic ventilation system is broken from the open/close state information received by the SCADA.

In addition, the remote control method according to the embodiment may further include the step of transmitting, to the SCADA, a remote control signal for the automatic ventilation system when the geupjeon branch determines that the automatic ventilation system is out of order.

In addition, the remote control method according to an embodiment may further include, by the SCADA, receiving the remote control signal from the geupjeon branch, and manually controlling the automatic ventilation system.

The automatic ventilation system, the automatic ventilation control method, the remote control system of the automatic ventilation system, and the remote control method of the automatic ventilation system according to the embodiment automatically control or remote control the ventilation of the transformer room, thereby causing overload of the transformer and failure of auxiliary equipment. It is effective in preventing large blackouts caused by

1 is a block diagram showing the configuration of an automatic ventilation system of a transformer room according to an embodiment.
2 is a flowchart illustrating an automatic ventilation control method according to an embodiment.
3 is a configuration diagram illustrating the configuration of a remote control system of an automatic ventilation system according to an embodiment.
4 is a flowchart illustrating a method for remotely controlling an automatic ventilation system of a transformer room by a remote control system according to an embodiment.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar components are given the same and similar reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the embodiments; It should be understood to include equivalents and substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that no other element is present in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, an automatic ventilation system 100 of a transformer room according to an embodiment will be described with reference to FIG. 1 .

1 is a configuration diagram showing the configuration of the automatic ventilation system 100 of the transformer room according to the embodiment.

Referring to FIG. 1 , the automatic ventilation system 100 of the transformer room includes a lower damper 101 , an upper damper 102 , an overhead door 103 , a temperature sensor 104 , a control unit 105 , and a wire mesh door. (106) may be included.

The lower damper 101 may be disposed at the lower portion of the transformer room to suck in air outside the transformer room.

The upper damper 102 may be disposed above the transformer chamber to exhaust air inside the transformer chamber. The lower damper 101 and the upper damper 102 may be formed as a pair to ventilate the air inside the transformer room. In order to ventilate the air inside the transformer room, the lower damper 101 and the upper damper 102 may be controlled to be normally open. However, when a fire occurs inside the transformer room, the lower damper 101 and the upper damper 102 are controlled to be closed at the same time, thereby preventing the spread of fire. The lower damper 101 and the upper damper 102 may be connected to a control unit 105 to be described later to control the respective opening/closing states.

The overhead door 103 is disposed on the front side of the transformer room, and can take in air outside the transformer room. Air outside the transformer room, which is sucked in by the overhead door 103 , may be exhausted through the upper damper 102 . The overhead door 103 may be connected to a control unit 105 to be described later to control the opening/closing state.

The temperature sensor 104 is provided inside the transformer room, and can measure the temperature inside the transformer room. Here, the temperature inside the transformer chamber measured by the temperature sensor 104 may rise due to heat generated while the transformer is operating or heat caused by external factors. The temperature inside the transformer room measured by the temperature sensor 104 is transmitted to the control unit 105 to be described later to control the opening and closing of the lower damper 101 , the upper damper 102 , and the overhead door 103 . can be a criterion. Meanwhile, the temperature sensor 104 may be a thermocouple thermometer.

The control unit 105 may open or close at least one of the lower damper 101 , the upper damper 102 , and the overhead door 103 according to the temperature inside the transformer room measured by the temperature sensor 104 . can be controlled with A specific method for ventilating the inside of the transformer room by the control unit 105 controlling each configuration of the automatic ventilation system 100 will be described later.

The wire mesh door 106 may be disposed in front of the overhead door 103 . Here, the wire mesh door 106 is larger than the space in which the overhead door 103 is disposed, and may be combined with the boundary of the space in which the overhead door 103 is disposed. A component constituting the wire mesh door 106 may include iron, but is not limited thereto.

The wire mesh door 106 may prevent small animals from entering the transformer room through the space in which the overhead door 103 is opened. That is, when the overhead door 103 is controlled to be open in order to take in air from the outside of the transformer room, small animals may invade the inside of the transformer room and the operation of the transformer may be restricted. When the wire mesh door 106 is disposed on the front side of the overhead door 103, even if the overhead door 103 is controlled in an open state, uninterrupted operation of the transformer can be performed.

In addition, the wire mesh door 106 may be controlled in an open state or a closed state by the control unit 105 . The wire mesh door 106 is generally controlled in a normally closed state, but when it is necessary to enter and exit the transformer room through the space in which the overhead door 103 is open, the wire mesh door 106 can be controlled in an open state. . For example, when it is necessary to enter and exit the transformer room through the space in which the overhead door 103 is open, the equipment is moved from the outside of the transformer room to the inside, or the operator enters and exits the transformer room for maintenance of the transformer. cases, etc. That is, the wire mesh door 106 may be controlled in a closed state when ventilation is required inside the transformer room, and can be controlled in an open state when entering and exiting the transformer room is required.

Hereinafter, with reference to FIG. 2 , the control unit 105 controls the lower damper 101 , the upper damper 102 , and the overhead door 103 , and a method of ventilating the inside of the transformer room will be described in detail. .

2 is a flowchart illustrating an automatic ventilation control method according to an embodiment.

Referring to FIG. 2 , in step S100 , when the temperature inside the transformer room measured by the temperature sensor 104 is less than 35° C., the control unit 105 controls the overhead door 103 to a closed state and , the lower damper 101 , and the upper damper 102 may be controlled in an open state.

In step S200 , when the temperature inside the transformer room measured by the temperature sensor 104 is 40° C. or higher, the control unit 105 controls the overhead door 103 to an open state, and the lower damper 101 , and the upper damper 102 may be controlled in an open state.

In step (S300), when the temperature inside the transformer room measured by the temperature sensor 104 is 35 ℃ or more and less than 40 ℃, when the measured temperature falls from a temperature of 40 ℃ or more, the control unit 105 is over The head door 103 may be controlled in an open state, and the lower damper 101 and the upper damper 102 may be controlled in an open state.

In step S400, when the temperature inside the transformer room measured by the temperature sensor 104 is 35° C. or more and less than 40° C., when the measured temperature rises from a temperature of less than 35° C., the control unit 105 is over The head door 103 may be controlled in a closed state, and the lower damper 101 and the upper damper 102 may be controlled in an open state. In steps S300 and S400, the reason that the overhead door 103 maintains the previous open/close state even if the temperature drops or rises is that the open/close state of the overhead door 103 is changed due to frequent changes in temperature. is to prevent

In steps S100 to S400 , the lower damper 101 and the upper damper 102 may maintain a normally open state regardless of the rise or fall of temperature. Temperature control in the transformer room according to the rise or fall of the temperature may be performed by opening and closing the overhead door 103 . In addition, the steps ( S100 ) to ( S400 ) are not sequential, and each step may be individually applied by the controller 105 according to the temperature inside the transformer room.

Hereinafter, the remote control system 1000 including the automatic ventilation system 100 of the transformer room will be described with reference to FIG. 3 .

3 is a configuration diagram showing the configuration of the remote control system 1000 of the automatic ventilation system 100 according to the embodiment.

Referring to FIG. 3 , the remote control system 1000 according to the embodiment may include an automatic ventilation system 100 of a transformer room, a supervisory control and data acquisition (SCADA, 200), and a geupjeon branch 300 . .

Since each configuration of the automatic ventilation system 100 and the control method of each configuration have been described above, the following will be omitted.

The SCADA 200 is a system for collecting information by remotely monitoring, controlling, and measuring power system facilities of an unmanned substation. The SCADA 200 may collect information by remotely monitoring, controlling and measuring the automatic ventilation system 100 of a transformer room located in an unmanned substation.

The power station 300 may transmit a control command to the power system facility by using the information collected by the SCADA 200 . The power station 300 may transmit a remote control signal for the automatic ventilation system 100 to the SCADA 200 when an abnormality occurs in the open/close state of the automatic ventilation system 100 of the transformer room.

Hereinafter, with reference to FIG. 4 , a method in which the remote control system 1000 remotely controls the automatic ventilation system 100 of the transformer room will be described in detail.

4 is a flowchart illustrating a method for remotely controlling the automatic ventilation system 100 of the transformer room by the remote control system 1000 according to the embodiment.

Referring to FIG. 4 , in step S1000 , the SCADA 200 opens and closes at least one of the lower damper 101 , the upper damper 102 , and the overhead door 103 from the automatic ventilation system 100 . Status information can be received.

In step S2000 , the geupjeon branch 300 may determine whether the automatic ventilation system 100 has failed from the open/close state information received by the SCADA 200 .

In step S3000 , when the geupjeon branch 300 determines that the automatic ventilation system 100 is out of order, a remote control signal for the automatic ventilation system 100 may be transmitted to the SCADA 200 . In step (S3000), as a reference for the geupjeon branch 300 to transmit a remote control signal for the automatic ventilation system 100 to the SCADA 200, the automatic ventilation system 100 is out of order. It is not limited, and it is possible to transmit a remote control signal based on various criteria, such as the case for inspection of the automatic ventilation system 100 .

In step S4000, the SCADA 200 may receive a remote control signal from the geupjeon branch 300 to manually control the automatic ventilation system 100.

Although the embodiment has been described in detail above, the scope of the embodiment is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the embodiment defined in the claims below are also included in the scope of the embodiment.

Accordingly, the foregoing detailed description should not be construed as limiting in all respects but as examples. The scope of the embodiments should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the embodiments are included in the scope of the embodiments.

1000: remote control system 101: lower damper
100: automatic ventilation system 102: upper damper
200: SCADA 103: overhead door
300: geupjeonso 104: temperature sensor
105: control unit
106: wire mesh door

Claims (21)

In the automatic ventilation system of the transformer room,
a lower damper for sucking in air outside the transformer room;
an upper damper for exhausting air inside the transformer room;
an overhead door for inhaling air outside the transformer room;
a temperature sensor for measuring the temperature inside the transformer room;
a control unit configured to control at least one of the lower damper, the upper damper, and the overhead door to an open state or a closed state according to the measured temperature; and
Wire mesh door disposed in front of the overhead door
Automatic ventilation system comprising. According to claim 1,
The control unit is
When the measured temperature is less than 35 ℃,
controlling the overhead door to a closed state;
controlling the lower damper and the upper damper to an open state,
automatic ventilation system. 3. The method of claim 2,
The control unit is
When the measured temperature is 40 ° C or higher,
controlling the overhead door to an open state,
controlling the lower damper and the upper damper to an open state,
automatic ventilation system. 4. The method of claim 3,
The control unit is
When the measured temperature is 35 ° C or more and less than 40 ° C,
When the measured temperature falls at a temperature of 40 ° C or higher,
Controlling the overhead door, the lower damper, and the upper damper to an open state,
automatic ventilation system. 5. The method of claim 4,
The control unit is
When the measured temperature is 35 ° C or more and less than 40 ° C,
When the measured temperature rises at a temperature of less than 35 °C,
controlling the overhead door to a closed state, and controlling the lower damper and the upper damper to an open state,
automatic ventilation system. According to claim 1,
The temperature sensor is a thermocouple thermometer, automatic ventilation system. According to claim 1,
The control unit is
An automatic ventilation system for controlling the wire mesh door to an open state or a closed state. An automatic ventilation control method performed by an automatic ventilation system in a transformer room, comprising:
The automatic ventilation system includes a lower damper for taking in air outside the transformer room, an upper damper for exhausting air inside the transformer room, an overhead door for sucking in air outside the transformer room, and the temperature inside the transformer room. A temperature sensor that measures, a control unit that controls at least one of the lower damper, the upper damper, and the overhead door to be opened or closed according to the measured temperature, and disposed in front of the overhead door including a wire mesh door,
The automatic ventilation control method,
When the measured temperature is less than 35 ℃, the control unit, controlling the overhead door to the closed state, and controlling the lower damper and the upper damper to the open state, and
when the measured temperature is 40° C. or higher, controlling, by the controller, the overhead door to an open state, and controlling the lower damper and the upper damper to an open state
Automatic ventilation control method comprising a. 9. The method of claim 8,
When the measured temperature is 35° C. or higher and less than 40° C., when the measured temperature falls from a temperature of 40° C. or higher, the control unit controls the overhead door, the lower damper, and the upper damper to an open state step to do
Automatic ventilation control method further comprising a. 10. The method of claim 9,
When the measured temperature is 35°C or more and less than 40°C, when the measured temperature rises from a temperature of less than 35°C, the control unit controls the overhead door to a closed state, the lower damper, and the upper Controlling the damper to the open state
Automatic ventilation control method further comprising a. A remote control system comprising:
The remote control system, the automatic ventilation system of the transformer room, SCADA (Supervisory Control And Data Acquisition) for receiving the opening/closing state information from the automatic ventilation system, and monitoring the opening/closing state information from the SCADA, the automatic ventilation system Including a remote control station,
The automatic ventilation system,
a lower damper for sucking in air outside the transformer room;
an upper damper for exhausting air inside the transformer room;
an overhead door for inhaling air outside the transformer room;
a temperature sensor for measuring the temperature inside the transformer room;
a control unit configured to control at least one of the lower damper, the upper damper, and the overhead door to an open state or a closed state according to the measured temperature; and
Wire mesh door disposed in front of the overhead door
Including, a remote control system. 12. The method of claim 11,
The control unit is
When the measured temperature is less than 35 ℃,
controlling the overhead door to a closed state;
controlling the lower damper and the upper damper to an open state,
remote control system. 13. The method of claim 12,
The control unit is
When the measured temperature is 40 ° C or higher,
controlling the overhead door to an open state,
controlling the lower damper and the upper damper to an open state,
remote control system. 14. The method of claim 13,
The control unit is
When the measured temperature is 35 ° C or more and less than 40 ° C,
When the measured temperature falls at a temperature of 40 ° C or higher,
Controlling the overhead door, the lower damper, and the upper damper to an open state,
remote control system. 15. The method of claim 14,
The control unit is
When the measured temperature is 35 ° C or more and less than 40 ° C,
When the measured temperature rises at a temperature of less than 35 °C,
controlling the overhead door to a closed state, and controlling the lower damper and the upper damper to an open state,
remote control system. 12. The method of claim 11,
wherein the temperature sensor is a thermocouple thermometer. 12. The method of claim 11,
The control unit is
A remote control system for controlling the wire mesh door in an open or closed state. 12. The method of claim 11,
The automatic ventilation system,
A remote control system, which is manually controlled by the remote control of the geupjeonso. A remote control method of an automatic ventilation system of a transformer room performed by the remote control system, comprising:
The remote control system includes an automatic ventilation system of the transformer room, a Supervisory Control And Data Acquisition (SCADA), and a power station,
The automatic ventilation system includes a lower damper for taking in air outside the transformer room, an upper damper for exhausting air inside the transformer room, an overhead door for sucking in air outside the transformer room, and the temperature inside the transformer room. A temperature sensor that measures, a control unit that controls at least one of the lower damper, the upper damper, and the overhead door to be opened or closed according to the measured temperature, and disposed in front of the overhead door including a wire mesh door,
The remote control method comprises:
The SCADA receives the opening/closing state information of at least one of the lower damper, the upper damper, and the overhead door from the automatic ventilation system.
receiving; and
Determining whether the automatic ventilation system is broken from the open/close state information received by the SCADA, by the geupjeon branch
A remote control method comprising a. 20. The method of claim 19,
When the geupjeon branch determines that the automatic ventilation system is out of order, transmitting a remote control signal for the automatic ventilation system to the SCADA
A remote control method further comprising a. 21. The method of claim 20,
Step, by the SCADA, receiving the remote control signal from the geupjeon branch, and manually controlling the automatic ventilation system
A remote control method further comprising a.

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