KR102341081B1 - Lightnig monitoring system for power transmission tower - Google Patents

Abstract

A lightning monitoring system for a power transmission tower according to the present invention is a lightning monitoring system for a power transmission tower, which monitors lightning strikes occurred in the power transmission tower. The lightning monitoring system includes: an illuminance sensor unit disposed on one side of the power transmission tower to sense brightness of light around the power transmission tower; a data collection unit connected to the illuminance sensor unit to collect brightness information on the light sensed by the illuminance sensor unit; an illuminance determination unit configured to determine whether a lightning strike occurs by time-series comparison of the brightness information of the light collected by the data collection unit; a lightning sensor unit installed in the power transmission tower to sense the lightning strike; a surge protector connected to the lightning sensor unit; a lightning determination unit configured to determine the signal sensed by the lightning sensor unit; a comparison unit configured to integrate and compare determination results of the illuminance determination unit and the lighting determination unit; and a data transmission unit configured to transmit a comparison result of the comparison unit. The lightning monitoring system for a power transmission tower according to the present invention can more reliably monitor whether the lightning strike has fallen on the power transmission tower by comparing the data collected by the illuminance sensor and the lightning sensor.

Description

Transmission tower lightning monitoring system

The present invention is a system for monitoring lightning applied to a power transmission tower located between a power plant and a substation in the field of transmission and distribution, and more specifically, a more reliable transmission table lightning monitoring system using a lightning sensor and an illuminance sensor.

A transmission line is a power facility for supplying power produced by a power plant to each region through a substation for power supply. .

On the other hand, a transmission line installed on the ground is supported by a transmission tower installed at a certain distance, and since this transmission line is widely installed over the entire region, it is exposed to risks caused by wind, snow, rain, lightning, and the like. In addition, most of the transmission line accidents are ground fault accidents in which the transmission line is damaged due to a direct lightning strike on the transmission tower. Preventive measures such as instantaneous inspections are necessary to prevent this from occurring.

In addition, when the transmission line is short-circuited due to the above-mentioned lightning accident, a large amount of current, several to several tens of times the load current, flows through the transmission line, which weakens the tensile strength of the electric equipment such as the voltage booster installed in the transmission tower, thereby preventing the abnormal operation of the electric equipment. to cause

Therefore, when a lightning accident occurs in a power transmission tower, it is necessary to quickly detect it and take appropriate measures, such as stopping the electricity supply in the faulty section. Therefore, continuous maintenance and inspection of the transmission line is performed.

On the other hand, Republic of Korea Utility Model Publication No. 99-34128 discloses a conventional lightning display device using a flag method, and when a high current flows due to lightning, a solenoid driven according to the operation of a selection switch, and a display panel according to the operation of the solenoid It is deployed and configured to indicate externally that a lightning strike has occurred.

However, with the above configuration, even when a high current flows due to an abnormality other than lightning, there is a problem in that it is determined in the same way as that of lightning.

Republic of Korea Patent Publication 10-2011-0097231 (published on August 31, 2011))

A transmission tower lightning monitoring system according to the present invention is intended to provide a more reliable lightning monitoring system by integrating information sensed using sensors of different properties to determine whether there is a lightning strike.

In addition, it is intended to provide a transmission tower lightning monitoring system that can operate various sensors with a simple configuration.

A transmission tower lightning monitoring system according to the present invention is a transmission tower lightning monitoring system for monitoring lightning generated in a transmission tower. An illumination sensor unit disposed on one side of a transmission tower to sense the brightness of light around the transmission tower, and an illumination sensor connected to the illumination sensor unit A data collection unit that collects the brightness information of the light sensed by the unit, an illuminance determination unit that compares the brightness information of the light collected by the data collection unit in time-series to determine whether a lightning strike occurs, and is installed in a power transmission tower to sense lightning a lightning sensor unit, a surge protector connected to the lightning sensor unit, a lightning determination unit determining a signal sensed by the lightning sensor unit, and a comparison unit comparing and integrating the judgment results of the illuminance determination unit and the lightning determination unit; and a data transmission unit for transmitting the comparison result of the comparison unit.

The lightning sensor unit of the power transmission tower lightning monitoring system according to the present invention is composed of a plurality of lightning sensors, and the lightning sensor is composed of an electric field sensor or a magnetic field sensor.

The illuminance sensor unit of the transmission tower lightning monitoring system according to the present invention is composed of a plurality of illuminance sensors, and the illuminance sensor is composed of a photoelectric conversion element.

The illuminance sensor of the power transmission tower lightning monitoring system according to the present invention includes a lower case having a bottom surface coupled to the power transmission tower, a driving unit disposed inside the lower case, a rotating case connected to the driving unit to rotate, and a lower case to prevent separation of the rotating case Among the illuminance sensor cradles composed of an upper case coupled to the illuminance sensor, it is preferably coupled to the upper surface of the rotating case to sense the brightness of surrounding light when the rotating case is rotated.

The lower case of the power transmission tower lightning monitoring system according to the present invention is formed in a cylindrical shape through which upper and lower surfaces are penetrated, the first internal gear is formed on the inner surface of the lower case, and a drive shaft coupled to the motor is disposed in the lower part of the lower case, A first external gear in contact with the first internal gear is rotatably disposed on the driving shaft, and a second external gear having a diameter smaller than that of the first external gear is disposed above the first external gear on the driving shaft, and the bottom surface of the rotating case is penetrated, , a second internal gear in contact with the second external gear is disposed inside the upper case, and the upper and lower surfaces of the upper case are open to expose the upper surface of the rotating case in the center, and are coupled in contact with the upper surface of the lower case.

The centers of the first external gear and the second external gear of the transmission tower lightning monitoring system according to the present invention are spaced apart from the center of the drive shaft, and the number of teeth of the first external gear is smaller than the number of teeth of the first internal gear, The number of teeth of the second external gear is smaller than the number of teeth of the second internal gear.

The centers of the first external gear and the second external gear of the transmission tower lightning monitoring system according to the present invention are disposed to face each other with respect to the center of the drive shaft, and a through hole is formed in the first external gear and the second external gear, and the through hole has A pin rotating inside the through hole is inserted, an illumination sensor housing forming a penile in one direction is disposed on the upper surface of the rotation case, and an illumination sensor is disposed inside the illumination sensor housing.

The transmission tower lightning monitoring system according to the present invention has the effect of more reliably monitoring whether a lightning strike has fallen on the transmission tower by comparing the data collected from the illuminance sensor and the lightning sensor.

In addition, there is an effect of increasing the economic feasibility of operation by sensing the accompanying lightning when a lightning strike occurs using a small number of illuminance sensors.

1 is a block diagram of a transmission tower lightning monitoring system according to an embodiment of the present invention.
2 is a perspective view of the illuminance sensor cradle in which the illuminance sensor shown in FIG. 1 is installed.
3 is an exploded perspective view of the illuminance sensor cradle shown in FIG. 2 .
4 is a cross-sectional view of the illuminance sensor cradle shown in FIG. 1 .

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, and includes one or more other features or numbers, It should be understood that the possibility of the presence or addition of steps, operations, components, parts or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present specification. does not

1 is a block diagram of a transmission tower lightning monitoring system according to an embodiment of the present invention, FIG. 2 is a perspective view of the illuminance sensor cradle in which the illuminance sensor shown in FIG. 1 is installed, and FIG. 3 is the illuminance sensor cradle shown in FIG. is an exploded perspective view of , and FIG. 4 is a cross-sectional view of the illuminance sensor cradle shown in FIG. 1 .

Hereinafter, the transmission tower lightning monitoring system will be described in detail with reference to the attached file.

The transmission tower lightning monitoring system according to the present invention determines whether a lightning strike occurs using the accompanying light and high current when a lightning strike occurs in the transmission tower. It was developed to prevent misjudgment caused by

As shown in FIG. 1, the transmission tower lightning monitoring system according to the present invention is an illuminance sensor unit 110, which is disposed on one side of the transmission tower to sense the brightness of light around the transmission tower, and is connected to the illuminance sensor unit 110. The data collection unit 130 for collecting the brightness information of the light sensed in 110), and the illuminance determination unit 140 for determining whether a lightning strike occurs by time-series comparison of the brightness information of the light collected by the data collection unit 130 , a lightning sensor unit 120 installed in a power transmission tower to sense lightning, a surge protector 150 connected to the lightning sensor unit 120, and a lightning determination unit 160 to determine a signal sensed by the lightning sensor unit 120 , the comparison unit 170 is composed of a comparison unit 170 that integrates and compares the determination results of the illuminance determination unit 140 and the lightning determination unit 160, and in consideration of the fact that in general, the transmission tower is installed in a place where authorization is rare, the comparison unit 170 ) was constructed by adding a data transmission unit 180 that wirelessly transmits the comparison result to the information repeater installed in the transmission tower management system.

In this system, when both the illuminance determination unit 140 connected to the illuminance sensor unit 110 and the lightning strike determination unit 160 connected to the lightning sensor unit 120 determine the lightning strike, the comparison unit 170 determines the lightning strike. Thus, the occurrence of lightning can be transmitted to the information repeater through the data transmitter 180, and when the determination of the illuminance determination unit 140 or the lightning determination unit 160 is different, the comparison unit 170 does not determine it as a lightning strike. may not be

The illuminance sensor unit 110 senses bright light accompanying lightning, and may be composed of a plurality of illuminance sensors 111 .

When the illuminance sensor 111 is configured as one, it is difficult to detect an error of the illuminance sensor 111 itself, so the illuminance sensor unit 110 is preferably configured in plurality. In this case, various sensors may be employed as the illuminance sensor 111 , but it is preferable to use a sensor made of a photoelectric conversion element due to the characteristic of being constantly sensed.

That is, like a lightning observation system using a forest fire monitoring camera (Registered Patent No. 10-1615099), an image around a power transmission tower can be acquired using a camera and it can be analyzed to monitor whether there is a lightning strike, but it is necessary to monitor the lightning at all times. Since a separate power source is added, a relatively high cost is required for installation and operation. Therefore, when the illuminance sensor 111 made of a photoelectric conversion element is used as in the present invention, more economical monitoring is possible.

The lightning sensor unit 120 of the power transmission tower lightning monitoring system according to the present invention is preferably composed of a plurality of lightning sensors 121 like the illuminance sensor 111, and is preferably composed of an electric field sensor or a magnetic field sensor. The lightning sensor 121 is preferably installed around the overhead branch line installed in the power transmission tower.

When a lightning strike occurs in a power transmission tower, a bright light is generated along the movement path of the lightning strike, and a bright light flashing around the transmission tower for a short time can be seen. Therefore, when the plurality of illuminance sensors 111 are all annihilated for a short time, it can be determined as lightning.

However, even in this case, since instantaneous bright light may flow into the illuminance sensor 111 due to a forest fire, etc., the plurality of illuminance sensors 111 may be rotated to sense light in the same direction at time intervals, and the same direction If the intermittent light is sensed in the light source, it can be determined that there is another light source around the power transmission tower rather than the lightning strike. Therefore, in the present invention, as shown in FIG. 2 , it is preferable to arrange the illuminance sensor 111 on a rotating cradle, and install the cradle to the power transmission tower.

The cradle in which the illuminance sensor 111 is installed includes a lower case 210 having a bottom surface coupled to a power transmission tower, a driving unit disposed inside the lower case 210, and a rotating case connected to the driving unit as shown in FIG. 3 . 250 and an upper case 260 coupled to a lower case 210 to prevent separation of the rotating case 250, and the illuminance sensor 111 has an illuminance sensor housing 111a having an opening in one direction. It is preferable to install it inside and configure it so that light in the direction of the opening can be sensed.

Here, the lower case 210 is formed in a cylindrical shape through which upper and lower surfaces are penetrated, a first internal gear 212 is formed on the inner surface of the lower case 210 , and a motor (not shown in the drawing) is formed in the lower part of the lower case 210 . ) and a driving shaft 220 coupled thereto, a first external gear 230 in contact with the first internal gear 212 is rotatably disposed on the driving shaft 220, and a first external gear ( 230) It is possible to insert the second external gear 240 having a smaller diameter than the first external gear 230 at the upper portion, and the illuminance sensor 111 is installed inside the illuminance sensor housing 111a installed in the rotating case 250. A first external gear 230 and a second external gear 240 are disposed on the inner surface through which the bottom surface is penetrated and the second internal gear 252 is in contact with the second external gear 240 when the driving shaft 220 rotates. ) is configured to rotate the rotating case 250 by making contact with the first internal gear 212 and the second internal gear 252 .

At this time, the upper case 260 has upper and lower surfaces open so that the upper surface of the rotating case 250 is exposed at the center, and is combined with the upper surface of the lower case 210 to prevent the rotating case 250 from being separated. It is preferred to be constructed.

In general, when the illuminance sensor 111 is installed on the rotating shaft of the motor, there is a problem in that the illuminance sensor 111 cannot effectively sense ambient light because the rotation speed of the motor is very fast. Therefore, a separate device for reducing the rotational speed of the motor to an appropriate speed can be used. However, in the case of a device using a general planetary gear, there is a problem in that only some of the teeth of the internal gear come into contact with the teeth of other gears according to the driving, and damage to the gear occurs. Therefore, the centers of the first external gear 230 and the second external gear 240 according to the present invention are spaced apart from the center of the driving shaft 220, and the teeth of the gear are configured to have an isochronous curve, so that the first external gear ( It is preferable that the first internal gear 212 in contact with the 230 and the second internal gear 252 in contact with the second external gear 240 be in rolling contact.

At this time, the number of teeth of the first external gear 230 is formed to be smaller than the number of teeth of the first internal gear 212 , and the number of teeth of the second external gear 240 is greater than the number of teeth of the second internal gear 252 . It is preferable to be formed small to reduce the number of rotations of the motor so that the rotation case 250 can be rotated.

In addition, as shown in FIG. 4 , the centers of the first external gear 230 and the second external gear 240 are disposed to face each other with respect to the center of the driving shaft 220 , so that the first external gear 230 and the second external gear 230 are disposed. It is preferable to allow the external gear 240 to come into contact with the first internal gear 212 and the second internal gear 252 in different directions to attenuate the tremor that may occur when the gear and the gear come into contact with each other. .

In addition, a through hole is formed in the first external gear 230 and the second external gear 240 , and a pin 234 is inserted into the through hole to rotate inside the through hole when the driving shaft 220 rotates and rotates inside the first external gear. Rotation of the gear 230 and the second external gear 240 may be synchronized.

In addition, in order to reduce friction generated when the driving shaft 220 rotates, the first bearing 232 may be inserted into the lower portion of the driving weight 220 , and the first external gear 230 and the second external gear 240 . ), a second bearing 242 for preventing friction generated between the first external gear 230 and the second external gear 240 and the driving shaft 220 is preferably inserted into the driving shaft 220 into which it is inserted.

In addition, the lower case 210 and the upper case 260, the bottom surface of which is coupled to the transmission tower, can be coupled to each other through a fixture 214, and in this case, as shown in FIG. 4 to couple the fixture 214, the lower case ( A fixing hole is formed through the upper case 260 from the side of the 210), and the fixing tool 214 may be fastened to the fixing hole. When the fixture 214 forms a hole in the structure of the power transmission tower and penetrates the structure and is fastened to the lower case 210 and the upper case 260, the cradle can be more effectively fixed to the transmission tower.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

110: illuminance sensor unit 111: illuminance sensor
120: lightning sensor unit 121: lightning sensor
130: data collection unit 150: surge protector
140, 160: judgment unit 170: comparison unit
180: number of data transmissions
210: lower case 212: first internal gear
214: fixture 220: drive shaft
230: first external gear 232: first bearing
234: pin 240: second external gear
242: second bearing 250: rotating case
2523: second inner gear 260: upper case

Claims (7)

As a power transmission tower lightning monitoring system for monitoring lightning that occurs in the transmission tower,
an illuminance sensor unit 110 disposed on one side of the transmission tower to sense the brightness of light around the transmission tower;
a data collection unit 130 connected to the illuminance sensor unit 110 to collect brightness information of the light sensed by the illuminance sensor unit 110;
an illuminance determination unit 140 for determining whether or not a lightning strike occurs by time-series comparison of the brightness information of the light collected by the data collection unit 130;
a lightning sensor unit 120 installed in the power transmission tower to sense lightning;
a surge protector 150 connected to the lightning sensor unit 120;
a lightning determination unit 160 for determining a signal sensed by the lightning sensor unit 120;
a comparison unit 170 that integrates and compares the determination results of the illuminance determination unit 140 and the lightning determination unit 160; and
and a data transmission unit 180 for transmitting the comparison result of the comparison unit 170,
The lightning sensor unit 120 is composed of a plurality of lightning sensors 121,
The lightning sensor 121 is an electric field sensor or a magnetic field sensor,
The illuminance sensor unit 110 is composed of a plurality of illuminance sensors 111,
The illuminance sensor 111 is a photoelectric conversion element,
The illuminance sensor 111 includes a lower case 210 having a bottom surface coupled to the power transmission tower, a driving unit disposed inside the lower case 210, a rotating case 250 connected to the driving unit to rotate, and the rotation Among the illuminance sensor cradles composed of the upper case 260 coupled to the lower case 210 to prevent the case 250 from being separated, it is coupled to the upper surface of the rotating case 250, and the rotating case 250 is rotated. A transmission tower lightning monitoring system, characterized in that it senses the brightness of light around the city.
delete delete delete According to claim 1,
The lower case 210 is formed in a cylindrical shape through which upper and lower surfaces are penetrated, and a first internal gear 212 is formed on the inner surface of the lower case 210,
A drive shaft 220 coupled to a motor is disposed at a lower portion of the lower case 210,
A first external gear 230 in contact with the first internal gear 212 is rotatably disposed on the driving shaft 220,
A second external gear 240 having a smaller diameter than the first external gear 230 is disposed on the first external gear 230 on the drive shaft 220 ,
A bottom surface of the rotation case 250 is penetrated, and a second internal gear 252 in contact with the second external gear 240 is disposed inside,
The upper case (260) has upper and lower surfaces open so that the upper surface of the rotating case (250) is exposed at the center, and is coupled to the upper surface of the lower case (210).
6. The method of claim 5,
Centers of the first external gear 230 and the second external gear 240 are disposed to be spaced apart from the center of the driving shaft 220,
The number of teeth of the first external gear 230 is smaller than the number of teeth of the first internal gear 212 , and the number of teeth of the second external gear 240 is the number of teeth of the second internal gear 252 . Transmission tower lightning monitoring system, characterized in that formed smaller than the number.
7. The method of claim 6,
Centers of the first external gear 230 and the second external gear 240 are disposed to face each other with respect to the center of the driving shaft 220,
A through hole is formed in the first external gear 230 and the second external gear 240, and a pin 234 rotating inside the through hole is inserted into the through hole,
An illuminance sensor housing 111a forming a detective in one direction is disposed on the upper surface of the rotation case 250, and the illuminance sensor 111 is disposed inside the illuminance sensor housing 111a. monitoring system.

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