KR102568336B1 - Bariable ventilation system with respect to weather condition change - Google Patents

Abstract

A variable ventilation device that responds to weather changes according to the present invention includes a ground switch installed on the ground or outdoors near a sidewalk to protect power systems and control power supply; a terminal device that is installed inside the ground switch and controls ventilation inside the ground switch according to received weather information; A rain sensor formed on the top of the enclosure of the ground switch to detect the strength and amount of rainwater in case of rain; a wind direction/speed sensor that is formed on a side surface of an enclosure wall of the ground switchgear and senses wind direction and speed; a temperature sensor installed inside the terminal device to measure the temperature inside the terminal device; An environmental sensor module that detects humidity and condensation inside the ground switch with a sensor module in which a humidity sensor and a condensation sensor are integrated; A variable ventilation fan connected to the output port of the terminal device and controlled by the terminal device according to information on the strength, amount, wind direction, and wind speed of rainwater transmitted from the rain sensor and the wind direction/wind speed detection sensor connected to the input port. ; has an effect of effectively reducing the rate of equipment failure due to operating environments such as temperature rise in summer and condensation in winter by air circulation inside the ground distribution equipment of a sealed structure including;

Description

Variable ventilation system that responds to weather changes {BARIABLE VENTILATION SYSTEM WITH RESPECT TO WEATHER CONDITION CHANGE}

The present invention relates to a variable ventilation system that responds to weather changes, and more particularly, to a device that varies according to external weather conditions in order to maximize ventilation efficiency in an enclosed facility operating environment, and detects a distribution automation system or distribution equipment. It relates to a variable ventilation system that responds to weather changes in conjunction with a diagnosis system.

Conventional ground switch ventilators are only partially installed to prevent condensation, and are fixed in one direction regardless of external changes, so it is structurally difficult to achieve maximum efficiency according to weather changes.

In addition, the conventional ground switch ventilation system has a problem in that it cannot automatically control and monitor according to the operating environment of important facilities and cannot check whether the ventilation system is operating.

In addition, the ground distribution equipment currently in operation is vulnerable to ventilation due to the sealed structure of the outer box, and short circuit, fire, corrosion, and deterioration of parts due to moisture generated from internal devices due to the increase in internal temperature in summer and dew condensation in winter There is also a problem that causes a failure.

In particular, the conventional ventilation device for preventing condensation of the ground switch shown in FIG. 1 has a problem in that installation is restricted when the switch enclosure is opened and closed at the upper end, and ventilation efficiency is lowered when the external environment changes due to snow.

Republic of Korea Patent Registration No. 10-2066570 (2020.01.09)

In order to solve the above problems, the present invention installs a rain sensor, a wind direction sensor, and a variable ventilation device inside the ground switch, and reflects the measurement values of environmental sensors such as temperature, humidity, and condensation to a terminal device (FRTU: Feeder Remote Terminal). The purpose is to provide a variable ventilation device that responds to weather changes that can control the rotation direction and tilt output of the variable ventilation device installed in the output port of the unit, IED (Intelligent Electronic Device).

In order to achieve the above object, a variable ventilation device that responds to weather changes according to the present invention includes a ground switch installed on the ground or outdoors near a sidewalk to protect a power system and control power supply; a terminal device that is installed inside the ground switch and controls ventilation inside the ground switch according to received weather information; A rain sensor formed on the top of the enclosure of the ground switch to detect the strength and amount of rainwater in case of rain; a wind direction/speed sensor that is formed on a side surface of an enclosure wall of the ground switchgear and senses wind direction and speed; a temperature sensor installed inside the terminal device to measure the temperature inside the terminal device; An environmental sensor module that detects humidity and condensation inside the ground switch with a sensor module in which a humidity sensor and a condensation sensor are integrated; A variable ventilation fan connected to the output port of the terminal device and controlled by the terminal device according to information on the strength, amount, wind direction, and wind speed of rainwater transmitted from the rain sensor and the wind direction/wind speed detection sensor connected to the input port. It is characterized by including;

Preferably, in order to achieve the above object, the variable ventilation device responding to weather changes according to the present invention is connected to the terminal device, and the intensity and amount of rainwater detected by the rain sensor, the wind direction and wind speed sensor detected Wind direction and speed information, temperature information inside the terminal device detected by the temperature sensor, humidity information and condensation information inside the ground switch detected by the environmental sensor module, and operating state of the variable ventilation fan controlled by the terminal device a communication device that transmits information to an external server; a DAS server that receives, stores, and manages information about the terminal device delivered through the communication device, and provides information so that an operator can check it remotely through an operator terminal connected thereto; and a power supply unit converting a magnetic field induced by a current flowing through a power line into effective power and supplying power to the variable ventilation fan.

More preferably, in order to achieve the above object, the terminal device of the variable ventilation device responding to weather changes according to the present invention controls the rotation direction of the variable ventilation fan by varying it with the wind direction information of the wind direction/wind speed sensor, It is characterized in that the inclination of the variable ventilation fan is varied and controlled with the detection information of the rain sensor, and the output amount of the variable ventilation fan is varied and controlled with the detection information of the temperature sensor and the environment sensor module.

The variable ventilation system responding to weather changes according to the present invention has an effect of effectively reducing the rate of facility failure due to operating environments such as temperature rise in summer and dew condensation in winter by air circulation inside ground distribution equipment having a sealed structure.

In addition, the variable ventilation system that responds to weather changes according to the present invention has an effect of securing economic feasibility because it can be linked to existing installed systems such as a distribution automation system (DAS) and a distribution ground equipment monitoring and diagnosis system.

According to the present invention, the variable ventilation device responding to weather changes has the effect of maximizing cooling and dehumidifying efficiency by controlling the operation of a ventilation fan reflecting state values of a rain sensor and a wind direction sensor.

1 is a view showing a conventional ground switch for preventing condensation.
2 is a view of a variable ventilation system that responds to weather changes according to the present invention.
3 is a diagram of a variable ventilation system responding to weather changes according to the present invention to which a DSS server and a communication device are added.
4 is a table diagram summarizing fan control parameters of a variable ventilation system that responds to weather changes according to the present invention.
5 is a system state diagram that an operator of a variable ventilation system that responds to weather changes according to the present invention can check on a terminal.
6 is a view of a variable ventilation system that responds to weather changes in another embodiment according to the present invention.
7 is a diagram showing a sequence of variable control of a variable ventilation fan of a variable ventilation system that responds to weather changes according to another embodiment of the present invention.

The terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical spirit of the present invention.

Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, they can be substituted at the time of this application It should be understood that there may be many equivalents and variations.

Hereinafter, a variable ventilation system responding to weather changes according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the variable ventilation system responding to weather changes according to the present invention includes a terminal device 100, a rain sensor 200, a wind direction and speed detection sensor 300, a temperature sensor 400, and an environmental sensor module. (500) and a variable ventilation fan (600).

The terminal device 100 is a feeder remote terminal unit (FRTU), and more specifically, measures, monitors, and controls data obtained from voltage and current sensors of a distribution line (22.9kV) switchgear in real time to prevent failures. It is an intelligent device that detects and transmits the power quality information required for distribution system operation to the central control unit.

The rain sensor 200 is a sensor that is formed on the upper end of the ground switch enclosure (H) and detects the strength and amount of rainwater in case of rain.

For reference, power supplied from substations to consumers is generally boosted to about 22,000V, and in large cities, power cables are buried underground in consideration of urban aesthetics. In this case, the power company installs a ground switch (Pad SW) to control the power supply on the ground or outdoors near the sidewalk to protect the power system.

On the other hand, the wind direction/speed sensor 300 is formed on the side of the wall of the enclosure (H) of the ground switch to sense the direction from which the wind blows and at the same time detects and measures the wind speed of the corresponding wind.

The wind direction/wind speed sensor 300 has a shape in which a windmill of a propeller is attached to the end of a fuselage as if the main wing or tail wing of a streamlined airplane have been removed, and measures the wind direction with a vertical tail wing of the tail of the fuselage and uses a windmill as a windmill. measure the wind speed

More specifically, the wind direction/wind speed detection sensor 300 uses a cell-syn motor as an angle sensor to measure the wind direction, and connects a small generator to the axis of the windmill because the rotational speed of the windmill is proportional to the wind speed, so that the generator Wind speed can be sensed from the generated electromotive force.

The wind direction/speed sensor 300 may digitally measure wind speed using a rotation sensor.

The above-described rain sensor 200 and the wind direction/wind speed detection sensor 300 are connected to the input port of the terminal device 100, and the detected intensity, amount, wind direction, and wind speed information of the terminal device ( 100).

The temperature sensor 400 is installed inside the terminal device 100 and measures the temperature inside the terminal device 100 .

The environment sensor module 500 is a sensor module in which a humidity sensor 510 and a condensation detection sensor 520 are integrated and detects humidity and condensation inside the ground switch.

The variable ventilation fan 600 is connected to the output port of the terminal device 100, and the intensity, amount, and It is controlled by the terminal device 100 according to wind direction and wind speed information.

That is, the terminal device 100 controls the slope of the variable ventilation fan 600 by varying it to -, 0, or + by reflecting the state information of the rain sensor 200.

More specifically, the terminal device 100 sets the inclination of the ventilation fan to 0°, +30°, or + when the meteorological condition detected by the rain sensor 200 is clear, as described in [Table 1] below. It is controlled by varying to 45 °, and when the weather condition is detected by the rain sensor 200 as rain or snow, it is controlled by varying to -30 ° or -45 °.

rain sensor wind direction Ventilation fan rotation direction note 0 Sunny 0°,+30°,+45° Switchgear enclosure (H) blocking rainwater inflow according to weather conditions One rain, snow -30°,-45°

In addition, the terminal device 100 determines the wind direction according to the detected information of the wind direction/wind speed detection sensor 300 and controls the rotation direction of the variable type ventilation fan 600 to forward rotation or reverse rotation. The forward rotation is when the variable type ventilation fan 600 rotates to discharge the air inside the ground switch to the outside when the terminal device 100 does not detect the back wind flowing into the ground switch vent.

The reverse rotation is when the variable type ventilation fan 600 is rotated so that the air outside the ground switch is introduced into the inside when the terminal device 100 senses a head wind flowing into the ground switch's ventilation hole.

More specifically, as described in [Table 2] below, the terminal device 100 controls the variable ventilation fan 500 to rotate forward when the wind direction state detected by the wind direction/wind speed sensor 300 is a fair wind. Conversely, if the sensed wind direction is headwind, reverse rotation is controlled.

wind direction sensor wind direction Ventilation fan rotation direction note 0 flat wind Forward rotation (IN->OUT) Reflection of the wind direction condition of the switchgear enclosure (H)
(Maximum ventilation efficiency) One headwind (headwind) Reverse rotation (OTU->IN)

In addition, the terminal device 100 determines the output of the variable ventilation fan 600 by using the temperature information measured by the internal temperature sensor and the humidity information and condensation information measured by the environmental sensor module 500 inside the ground switch. The rotational direction of the variable ventilation fan 600 according to the sensing information of the rain sensor 200, the wind direction/wind speed detection sensor 300, the temperature sensor 400, and the environment sensor module 500 , the slope, and the output amount are as shown in FIG. 4 .

That is, the terminal device 100 varies the rotational direction of the variable ventilation fan 600 according to the information detected by the wind direction/speed sensor 300, and according to the information detected by the rain sensor 300 The inclination of the variable ventilation fan 600 is varied, and the output amount of the variable ventilation fan 600 is controlled according to information detected by the temperature sensor 400 and the environmental sensor module 500.

More specifically, if the wind direction detected by the wind direction/wind speed detection sensor 300 is a fair wind, the terminal device 100 has an inclination of one of 0°, 35°, and 45°, and the variable type ventilation fan. The direction of rotation of (600) is controlled to operate in forward rotation, and when the rain sensor 200 detects rain or snow here, it is variably controlled with an inclination of -30 °.

Here, the terminal device 100 combines and reflects the temperature information detected by the temperature sensor 400 and the humidity information detected by the environment sensor module 500 to increase the output of the variable ventilation fan 600 by 50%. to 100% is variably controlled.

In addition, when the wind direction sensed by the wind direction sensor 300 is a reverse wind, the terminal device 100 controls the rotational direction of the variable ventilation fan 600 to operate in a reverse direction while having an inclination of 0°, Here, when the rain sensor 200 detects rain or snow, it is variably controlled with an inclination of -30°.

Here, the terminal device 100 combines and reflects the temperature information detected by the temperature sensor 400 and the humidity information detected by the environment sensor module 500 to increase the output of the variable ventilation fan 600 by 50%. to 100% is variably controlled.

On the other hand, the variable ventilation system responding to weather changes according to the present invention further includes a communication device 700, a DAS server 800, and a power supply unit 900 as shown in FIG.

The communication device 700 is connected to the terminal device 100, and the intensity and amount of rainwater detected by the rain sensor 200, wind direction and wind speed information detected by the wind direction/wind speed sensor 300, The temperature information inside the terminal device 100 sensed by the temperature sensor 400 and the humidity information and condensation information inside the ground switch sensed by the environment sensor module 500 are transmitted to the DAS server 800.

In addition, the communication device 700 transmits operation state information of the variable ventilation fan 600 controlled by the terminal device 100 to the DAS server 800 .

The DAS server 800 receives, stores, and manages information about the terminal device 100 transmitted through the communication device 700, and as shown in FIG. 5, through an operator terminal connected to the server. It provides information so that the operator can check it from a remote location.

Meanwhile, an operator operating a variable ventilation system that responds to weather changes according to the present invention can control and set the operating state of the variable ventilation fan 600 through an operator terminal.

The power unit 900 connects the Power-CT using power harvesting to an existing distribution monitoring system (distribution automation system, distribution ground equipment monitoring and diagnosis system) or configures it independently to supply stable power to the variable ventilation fan 600. allow this to happen.

That is, the power supply unit 900 converts the magnetic field induced by the current flowing through the power line into effective power and supplies power to the variable ventilation fan 600 .

On the other hand, the above-described rain sensor 200, wind direction and speed sensor 300, temperature sensor 400, environment sensor module 500, variable ventilation fan 600, communication device 700, DAS server 800 ), and the power supply unit 900 has been described as operating in conjunction with the terminal device 100 (FRTU), but as shown in FIG. 6, it is connected to an input interface and an output interface of an intelligent electronic device (IED). and it may work.

The operation of the variable ventilation system responding to weather changes according to the present invention having the above configuration will be described with reference to FIG. 7 .

The terminal device 100 receives detection information of the rain sensor 200 and the wind direction/wind speed detection sensor 300 .

The terminal device 100 changes the inclination of the variable ventilation fan 600 to -30° when the rain sensor 200 detects rain or snow.

Meanwhile, the variable ventilation fan 600 may be manually set to -45° during a typhoon.

The terminal device 100 varies the output of the variable ventilation fan 600 by reflecting the humidity information and condensation detection information inside the ground switch detected by the humidity sensor 510 and the condensation detection sensor 520.

In addition, the terminal device 100 determines the rotation direction (reverse direction or forward direction) according to the wind direction and wind speed information detected by the wind direction/speed sensor 300 for a predetermined time (for example, 1 minute), and determines a predetermined rotation direction. By operating the variable ventilation fan 600 for a period of time (for example, 14 minutes), the variable ventilation system according to the present invention is operated in response to weather changes.

In the above, the technical idea of the present invention has been described together with the accompanying drawings, but this is an illustrative example of a preferred embodiment of the present invention, but does not limit the present invention. In addition, it is obvious that various modifications and imitations can be made by anyone having ordinary knowledge in the technical field to which the present invention belongs without departing from the scope of the technical idea of the present invention.

100: terminal device
200: rain sensor
300: Wind direction and wind speed sensor
400: temperature sensor
500: environmental sensor module
600: variable ventilation fan
700: communication device
800: DAS server
900: power supply

Claims (7)

Ground switches installed on the ground or outdoors in order to protect the power system and control power supply;
a terminal device that is installed inside the ground switch and controls ventilation inside the ground switch according to received weather information;
A rain sensor formed on the top of the enclosure of the ground switch to detect the strength and amount of rainwater in case of rain;
a wind direction/speed sensor formed on a side surface of an enclosure wall of the ground switch to detect wind direction and speed;
a temperature sensor installed inside the terminal device to measure the temperature inside the terminal device; and
An environmental sensor module that detects humidity and condensation inside the ground switch with a sensor module in which a humidity sensor and a condensation sensor are integrated;
A variable ventilation fan connected to the output port of the terminal device and controlled by the terminal device according to information on the strength, amount, wind direction, and wind speed of rainwater transmitted from the rain sensor and the wind direction/wind speed detection sensor connected to the input port. including;
The terminal device
If the wind direction detected by the wind direction/wind speed detection sensor is a fair wind, the rotation direction of the variable ventilation fan is controlled to operate in forward rotation while having an inclination of either 0°35° or 45°, and the rain sensor When it detects rain or snow, it is variably controlled with an inclination of -30°,
If the wind direction detected by the wind direction sensor is a headwind, the rotation direction of the variable ventilation fan is controlled to operate in reverse while having a slope of 0°, and when the rain sensor detects rain or snow, -30° variable control with the slope of
Responding to weather changes, characterized in that by additionally reflecting the temperature information detected by the temperature sensor and the humidity information detected by the humidity sensor of the environment sensor module to variably control the output of the variable ventilation fan in the range of 50% to 100% variable ventilation system.
According to claim 1,
The terminal device
A variable ventilation system that responds to weather changes, characterized in that it is a feeder remote terminal unit (FRTU) or an intelligent electronic device (IED).
According to claim 2,
Connected to the terminal device, the intensity and amount of rainwater detected by the rain sensor, the wind direction and wind speed information detected by the wind direction/wind speed sensor, the temperature information inside the terminal device detected by the temperature sensor, and the environment sensor a communication device that transmits humidity information and condensation information within the ground switch detected by the module, and operating state information of the variable type ventilation fan controlled by the terminal device to an external server;
a DAS server that receives, stores, and manages information about the terminal device delivered through the communication device, and provides information so that an operator can check it remotely through an operator terminal connected thereto; and
A variable ventilation system that responds to weather changes, further comprising: a power supply unit that converts a magnetic field induced by a current flowing through a power line into effective power and supplies power to the variable ventilation fan.
According to claim 3,
The terminal device
The rotational direction of the variable type ventilation fan is controlled by varying the wind direction information of the wind direction/speed sensor, and the inclination of the variable type ventilation fan is controlled by varying the direction of rotation of the variable type ventilation fan by the detection information of the rain sensor, and the temperature sensor and the environment sensor module A variable ventilation system that responds to weather changes, characterized in that for controlling by varying the output amount of the variable ventilation fan with the detection information of.
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