KR20140032237A - Dip measuring apparatus for overhead transmission line - Google Patents

Dip measuring apparatus for overhead transmission line Download PDF

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Publication number
KR20140032237A
KR20140032237A KR1020120098895A KR20120098895A KR20140032237A KR 20140032237 A KR20140032237 A KR 20140032237A KR 1020120098895 A KR1020120098895 A KR 1020120098895A KR 20120098895 A KR20120098895 A KR 20120098895A KR 20140032237 A KR20140032237 A KR 20140032237A
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South Korea
Prior art keywords
roller
measurement
distance
line
wire
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KR1020120098895A
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Korean (ko)
Inventor
임재섭
신구용
김영홍
임윤석
이상윤
맹종호
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한국전력공사
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Priority to KR1020120098895A priority Critical patent/KR20140032237A/en
Publication of KR20140032237A publication Critical patent/KR20140032237A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/12—Measuring wheels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00—Overhead installations of electric lines or cables

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Cable Installation (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The present invention relates to a dip measuring apparatus for an overhead transmission line. More particularly, the present invention relates to a dip measuring apparatus for an overhead transmission line capable of saving time. According to the embodiment of the present invention, the a dip measuring apparatus for an overhead transmission line capable of saving time includes a measuring unit for receiving a tangential slope and measurement numbers; and a calculator for calculating the dip of an overhead transmission line by using a setting distance, the tangential slope, and measurement numbers. [Reference numerals] (200) Calculator; (AA) Tangential slope; (BB) Cable bottom point(Vertex)

Description

DIP MEASURING APPARATUS FOR OVERHEAD TRANSMISSION LINE}

The present invention relates to an overhead transmission line measuring device, and more specifically, to calculate the vertical movement distance of the roller by measuring the slope of the roller tangent to the horizontal line when the roller rotates along the wire from the support point of the steel tower to the lowest point of the wire In addition, the present invention relates to an overhead transmission line device for measuring the degree of declination of the overhead transmission line by summing the vertical movement distances of the rollers.

This is the straight line connecting the two points of the steel tower and the shortest straight line connecting the lowest point of the wire.

This degree is a very important factor in the safety of the overhead transmission line, the smaller the degree of construction of the overhead transmission line, the greater the tension of the support, the safety is lowered. On the other hand, if the ear canal is larger than necessary, the height of the support should be increased, since the possibility of failure caused by contact with other wires, trees, or other buildings due to wind traversing by the wind increases. Therefore, the proper ear canal and tension should be determined in consideration of the characteristics of the cable and the weather conditions of the track. After the wire is wired, accurate ear canal measurement and adjustment are necessary.

In other words, maintaining the proper degree of overhead of the overhead transmission line is an important factor in the quality of cable line construction, cable life, smooth operation of the transmission line, and prevention of failure.

Conventional ear canal calculation process and measurement method are divided into direct measurement method and indirect measurement method. In general, the height between wire support point and tangential point is measured in steel tower, setting point of observation point and ear canal, observation of wire and tangential line on observation line with observation equipment. A method of measuring the ear canal of a wire is used.

In particular, in the direct and indirect measuring methods, a total of two measuring persons, one person on each side of the tower, climb the tower to measure the height of the support point and the tangent of the tower, which takes a long time and all the processes are indirect from the top of the tower. Since the probability of error occurrence is high, the measurement accuracy is reduced. In addition, there was a problem that the transmission line supervisor had to directly climb the tower in order to check the ear canal measurement results, the safety of the work environment was deteriorated, and manpower and time for the ear canal measurement were excessively consumed.

Background art related to the present invention is the 'wire measurement degree direct measurement method' of Republic of Korea Patent Publication No. 10-2007-0009040 (2007.01.18).

The present invention was devised to solve the above-mentioned problems, and calculates the vertical movement distance of the roller by measuring the inclination of the roller tangent with respect to the horizontal line when the roller rotates along the wire from the support point of the steel tower to the lowest point of the wire. It is an object of the present invention to provide an overhead transmission line measuring device for measuring the ear canal of a overhead transmission line by summing the vertical moving distances of.

According to an aspect of the present invention, the overhead line measuring device for measuring overhead lines may measure the inclination of the roller tangent with respect to the horizontal line whenever the roller rotates along the wire from the support point of the steel tower to move the set distance to the lowest point of the wire. A measuring device for transmitting a tilt of the roller tangential to and a number of times of measurement; And a calculator configured to receive the inclination and the number of times of measurement from the measuring device and calculate an island degree of the overhead transmission line using the set distance, the inclination and the number of times of measurement.

The set distance of the present invention is characterized in that it is inversely proportional to the radius of the roller.

The setting distance of the present invention is characterized in that the circumference of the roller.

The measuring device of the present invention includes a measuring unit for counting the number of times of measurement, each time the roller moves a predetermined set distance, and measuring the inclination of the roller tangent to the horizontal line; And a transmission unit for transmitting the measurement frequency measured by the measurement unit and a slope of the roller tangent to the horizontal line in a wireless communication method.

The measuring device of the present invention is characterized in that it further comprises a storage for storing the number of measurements and the slope of the roller tangent to the horizontal line.

The measuring device of the present invention is characterized in that it further comprises a guide for guiding the roller to move along the wire.

The measuring device of the present invention is characterized in that it further comprises a reduction gear portion for decelerating to maintain the moving speed of the roller at a constant speed.

The calculator of the present invention includes a receiver for receiving the measurement number and the slope of the roller tangent to the horizontal line from the measuring device; And an operation unit for calculating an ear canal of the overhead transmission line using the set distance, the number of measurements received by the receiver, and the slope of the roller tangent to the horizontal line.

The calculator of the present invention calculates the vertical movement distance for each measurement number of the roller using the slope of the tangent of the roller relative to the horizontal line and the set distance measured for each measurement number of degrees of the overhead transmission line, the measurement It is characterized by summing the vertical movement distance by the number of times.

In the calculator of the present invention, the degree of islanding of the overhead transmission line is expressed by

Figure pat00001

Through the

The Y is the ear canal of the overhead transmission line, the C is the height of the lowest electric wire minus the total vertical travel distance from the height of the lower pylon to the lowest electric wire of two pylons of different heights, and h is the height of the high pylon of the two pylons. It is the difference between the vertical height of the low pylon, n is the total horizontal movement distance to the low pylon and the wire lowest point, m is the total horizontal movement distance to the high pylon and the wire lowest point.

The total horizontal travel distance to the low pylon and the wire lowest point and the total horizontal travel distance to the high pylon and the low wire point of the present invention utilize the slope of the roller tangent with respect to the set distance and the horizontal line measured by the number of measurements. By calculating the horizontal movement distance and the vertical movement distance for each measurement number of the roller, characterized in that the sum of the movement distance and the vertical movement distance for each measurement number.

The computing device of the present invention is characterized in that it is determined that the roller has reached the lowest point of the wire when the inclination of the roller tangent with respect to the horizontal line is equal to or less than a preset set angle range.

The present invention greatly reduces the time and manpower required for movement measurements.

Moreover, this invention improves the construction quality by improving the precision at the time of a movement measurement.

In addition, the present invention can reduce the ear canal measurement cost, and can be applied to the track currently in operation, it is possible to accurately measure the ear canal change on the track damaged due to aging or natural disasters in a short time, thereby shortening the construction period This reduces the overall construction cost.

In addition, the present invention can systematically manage all the tracks by computerizing information on the tracks obtained during ear canal measurement.

In addition, the present invention can satisfy the necessity and utility in preparation for the recent trend that the long-span line is widely used because the high-strength low-degree wire with excellent ear canal characteristics is applied.

1 is a conceptual diagram of an apparatus for measuring a degree of overhead transmission line in accordance with an embodiment of the present invention.
2 is a side view of the measuring device of the overhead transmission line degree measurement apparatus according to an embodiment of the present invention.
3 is a block diagram of an apparatus for measuring a degree of transmission line overhead according to an embodiment of the present invention.
4 is a view for explaining a method of calculating the degree of island of the overhead transmission line measuring apparatus according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating an operation process of an apparatus for measuring an overhead line of a overhead transmission line according to an exemplary embodiment of the present invention.
FIG. 6 is a view for explaining a method of calculating ear canals when heights of two span steel towers are different by using the overhead line measuring apparatus degree of transmission line according to an embodiment of the present invention.
7 is a diagram illustrating another example of a measuring device according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the overhead transmission line measuring device according to an embodiment of the present invention will be described in detail. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a conceptual diagram of an overhead transmission line degree measuring apparatus according to an embodiment of the present invention, Figure 2 is a side view of a measuring device of the overhead transmission line degree measurement apparatus according to an embodiment of the present invention, Figure 3 is 4 is a block diagram illustrating an apparatus for measuring overhead line transmission degree according to an embodiment of the present invention, and FIG.

In the overhead transmission line measuring apparatus according to an embodiment of the present invention, as shown in FIG. 1, the roller 110 is rotated along the wire 1 from the support point 11 of the pylon 10 to the lowest electric wire point. Each time the distance is moved, the inclination of the roller tangent with respect to the horizontal line is measured, and the set distance is received by measuring the inclination and the number of measurements from the measuring device 100 and the measuring device 100 which transmit the inclination and the number of times of measuring the tangent of the roller with respect to the measured horizontal line. And a calculator 200 for measuring an ear canal of the overhead transmission line using the slope and the number of measurements.

Referring to FIG. 1, the measuring device 100 includes a roller 110, which rotates along a wire 1 from a support point 11 of the steel tower 10, thereby supporting the steel tower 10. It moves from (11) to electric wire lowest point.

The measuring device 100 measures the inclination of the roller tangent with respect to the horizontal line every time the roller 110 rotates along the wire 1 from the support point 11 of the steel tower 10 to move the set distance to the lowest point of the wire. The tilt of the roller tangent with respect to the horizontal line and the number of times of measurement.

Here, the set distance is the movement distance of the measuring device 100 as a reference for measuring the inclination of the roller tangent to the horizontal line formed by the roller 110 and the wire 1. That is, the measuring device 100 measures the inclination of the roller tangent with respect to the horizontal line every time the set distance is moved by the roller 110.

In the present embodiment, the setting distance is described by way of example the same as the circumference of the roller 110. However, the technical scope of the present invention is not limited thereto, and may be variously set.

Typically, the wire 1 is installed in a parabolic form by gravity, and the shorter the set distance, the closer the wire 1 is to a straight line, so that the accuracy can be improved when calculating the degree of devolution of the overhead transmission line. The load is increased.

On the other hand, the longer the set distance is, the closer the wire 1 is to the parabola, so the accuracy thereof is lowered, but the load due to the degree of island calculation of the overhead transmission line is reduced.

Therefore, the setting distance may be variously set according to the shape and length of the wire 1, the measurement accuracy of the inclination sensor 122, the calculation load, and the like. For example, by setting the set distance to be inversely proportional to the radius of the roller 110 to increase the number of measurements, it is possible to improve the accuracy when calculating the ear canal.

2 and 3, the measuring device 100 includes a roller 110, a guide part 150, a case 140, a measuring part 120, a transmission part 130, and a reduction gear part 170. And recovery line 160.

The roller 110 rotates along the electric wire 1, as shown in FIG.

The case 140 protects the measuring unit 120 and the transmitting unit 130 from external impact.

The measuring unit 120 measures the inclination of the roller tangent with respect to the horizontal line and counts the number of times of measurement each time the roller 110 moves the set distance. As shown in FIG. 3, the tangent of the roller with respect to the horizontal line is shown. An inclination sensor 122 for measuring the inclination of the sensor and a count counter 121 for counting the number of times of measurement of the inclination of the tangent of the roller with respect to the horizontal line are included.

The transmitter 130 transmits the inclination of the tangent of the roller with respect to the horizontal line measured by the measuring unit 120 and the number of times of measurement to the calculator 200.

The guide part 150 is installed on both sides of the roller 110, respectively, so that one side is rotatably installed, and the other side is installed on the case 140 through the fixing part 145. Is guided so as to stably move along the wire (1) between the guide portion (150).

The reduction gear unit 170 is installed on the roller 110 to limit the rotational speed of the roller 110, so that the roller 110 can move at a constant constant speed.

The recovery line 160 has one end connected to the roller 110 or the case 140 to recover the roller 110 when the roller 110 moves to the lowest point of the wire. Accordingly, the worker or the like can pull the recovery line 160 to recover the measuring device 100 in the wire 1. Furthermore, the collection line 160 is marked with a scale so that the mounting of the wire 1 can be measured.

The storage unit 125 stores the slope of the roller tangent with respect to the horizontal line and the counted number of times of measurement. The storage unit 125 may measure the ear canal when the measuring device 100 is recovered through the recovery line 160. Through this, it is possible to prepare for an error situation, such as the inclination of the roller tangential to the horizontal line and the number of measurement due to the communication failure of the transmitter 130, such as not being transmitted to the calculator 200.

Meanwhile, the calculator 200 includes a receiver 210 and a calculator 220.

The receiver 210 receives the inclination of the tangent of the roller with respect to the horizontal line and the measurement frequency from the measuring device 100.

The calculating unit 220 calculates the degree of declination of the overhead transmission line using the set distance, the number of measurements received by the receiving unit 210, and the slope of the roller tangent to the horizontal line. The operation of the operation unit 220 will be described with reference to FIG. 4.

That is, the calculation unit 220 calculates the vertical movement distance for each measurement number of the roller 110 using the set distance measured for each measurement number and the slope of the roller tangent to the horizontal line, and then adds the vertical movement distance for each measurement number. Calculate the total horizontal travel distance and the total vertical travel distance.

The calculating unit 220 moves distances L 1 , L 2 , L 3 , ... at every measurement point P 0 , P 1 , P 2 ,..., P m as shown in FIG. Using, L m ), the vertical travel distance (H 1 = L 1 · sin (θ 1 ), H 2 = L 2 · sin (θ 2 ), H 3 = L 3 · sin (θ 3 ), ... calculating a H m = L m · sin ( θ m)), the vertical moving distance H 1, H 2, H 3 , ..., and the sum of m and H calculates the total vertical distance traveled.

4B illustrates the case where the set distance is 2πr.

Where r is the radius of the roller 110.

When the roller 110 rotates once, the movement distance is the same as the circumference of the roller 110. Therefore, when the roller 110 rotates once, the moving distance of the roller 110 becomes 2πr, and the set distance is 2πr, so each time the roller 110 moves 2πr, the number of measurements is counted, and the tangent of the roller 110 is achieved. The slope of the and the horizon is measured.

Where θ is the inclination of the roller tangent to the horizontal line, i is the rotational speed of the roller 110, n is the rotational speed of the roller 110 up to the arrival of the electric wire lowest point, X is the total horizontal travel distance, and Y is Speaking of the total vertical movement distance, the vertical movement distance and the horizontal movement distance for each measurement frequency of the roller 110 are as follows.

Since the moving distance m of the roller 110 during one rotation is 2πr and the inclination of the roller 110 is θ 1 , the horizontal moving distance when the roller 110 first rotates (m) is 2πr × cosθ 1 The vertical movement distance m at the time of the first rotation of the roller 110 is 2πr × sinθ 1 .

Since the moving distance m of the roller 110 at 2 rotations is 2πr, and the inclination of the roller 110 is θ 2 , the horizontal moving distance when the roller 110 rotates 2 is (m) is 2πr × cosθ 2 . , The vertical movement distance m when the roller 110 first rotates 2 is 2πr × sinθ 2 .

Since the moving distance m of the roller 110 during the third rotation is 2πr and the inclination of the roller 110 is θ 3 , the horizontal moving distance when the roller 110 rotates three times (m) is 2πr × cosθ 3 . , The vertical movement distance m when the roller 110 first rotates is 2πr × sinθ 3 .

Since the moving distance m of the roller 110 during rotation n is 2πr, and the inclination of the roller 110 is θ n , the horizontal moving distance when the roller 110 rotates n is mπx × cosθ n . And the vertical movement distance m when the roller 110 rotates n is 2 (pi) xsin (theta) n .

Therefore, the calculator 220 may calculate the total horizontal movement distance and the vertical movement distance up to n revolutions which are moved to the lowest point of the wire.

That is, the total horizontal moving distance X up to n revolutions is expressed by Equation 1 below.

Figure pat00002

In addition, the total vertical movement distance Y up to n revolutions is expressed by Equation 2 below.

Figure pat00003

In this case, the total vertical travel distance is the ear canal of the overhead transmission line.

Here, when the inclination of the roller tangent and the horizontal line is 0 degrees, it becomes the lowest point of the electric wire 1. However, in actual electric wire 1, the inclination of the roller tangent to the horizontal line is difficult to be measured at 0 degrees. Therefore, when the inclination of the roller tangent to the horizontal line is within a predetermined set angle range including 0 °, it is determined that the roller 110 has reached the lowest electric wire.

In this case, when the set angle range is large, the accuracy of ear canal measurement is lowered. Therefore, by setting the setting distance small, it is possible to reduce the setting angle range, thereby improving the measurement accuracy.

Hereinafter, an operation process of the overhead transmission line island measurement apparatus according to an embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation process of an apparatus for measuring an overhead line of a overhead transmission line according to an exemplary embodiment of the present invention.

First, the measuring device 100 checks whether the roller 110 rotates (S10), checks whether the set distance moves, and moves the set distance to measure the inclination of the roller tangent with respect to the horizontal line (S20, S30). To send).

Accordingly, the calculator 200 receives the inclination of the roller tangent with respect to the horizontal line and the number of measurements, and checks whether the inclination of the roller tangent with respect to the horizontal line is within a preset set angle range (S40). If the inclination is not included in the preset setting angle range, the inclination of the roller tangent with respect to the horizontal line and the number of times of measurement are continuously received from the measuring device 100.

On the other hand, if the inclination of the roller tangent to the horizontal line is included in the preset set angle range, the calculator 200 uses the roller (using the inclination of the tangent to the horizontal line and the set distance measured for each measurement number as described above). After calculating the vertical movement distance for each measurement number of 110), the total horizontal movement distance and the total vertical movement distance are calculated by summing the vertical movement distance for each measurement number (S50).

On the other hand, the general overhead transmission line is installed in mountain and slope. Accordingly, the method of calculating the ear canal when the height of the pylon 10 is different from the mountain and the slope is installed with reference to FIG. 6.

FIG. 6 is a view for explaining a method of calculating ear canals when heights of two span steel towers are different by using the overhead line measuring apparatus degree of transmission line according to an embodiment of the present invention.

That is, when the height of the pylon 10 is different, a method of calculating the altitude of the terrain having a height difference by using the total horizontal moving distance, the total vertical moving distance and the coordinate information of the support points 11 of both pylons 10 Equation 3 below.

Figure pat00004

Here, Y is the ear canal of the overhead transmission line, C is the height of the lowest point of the wire minus the total vertical travel distance from the height of the low pylon 10 to the lowest point of the two of the towers of different heights, and h is the high pylon ( 10) is the difference between the vertical height of the low pylon 10, n is the total horizontal distance to the low pylon 10 and the lowest point of the wire, and m is the total horizontal distance to the high pylon 10 and the lowest point of the wire. . In addition, H is the height of the wire 1, d L is the vertical distance of the lowest point of the wire of the pylon (10).

In addition, the total horizontal travel distance to the low pylon 10 and the wire lowest point and the total horizontal travel distance to the high pylon 10 and the low wire point are as described above. Using the inclination of the roller 110, the horizontal movement distance and the vertical movement distance for each measurement number may be calculated, and the movement distance and vertical movement distance for each measurement number may be added together.

On the other hand, the slope of the roller tangent to the horizontal line measured by the measuring device 100 is very important for measuring the movement of the overhead transmission line. Thus, various types of meter 100 can be employed to improve the accuracy of the slope of the roller tangent to the horizontal line.

7 is a diagram illustrating another example of a measuring device according to an embodiment of the present invention.

Referring to FIG. 7, the measuring device 100 includes two rollers 110, and each of the rollers 110 is provided with a guide part 150. As such, the measuring device 100 may include two rollers 110, such that the case 140 may be stably installed, thereby greatly improving the accuracy of the inclination of the roller tangent with respect to the horizontal line. The rest of the case 140, the measurement unit 120, the transmission unit 130, the reduction gear unit 170, and the recovery line 160 are the same as those illustrated in FIGS. 2 and 3, and thus, detailed description thereof will be omitted.

Here, the structure of the measuring device 100 is not limited to the above-described embodiment, the technical scope of the present invention will include all the various structures for improving the accuracy of the slope of the roller tangent to the horizontal line.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

1: wire 10: steel tower
11: support 100: measuring instrument
110: roller 120: measuring unit
121: Count frequency counter 122: Tilt sensor
125: storage unit 130: transmission unit
140: case 145: fixed part
150: guide portion 160: recovery line
170: reduction gear 200: calculator
210: Receiving unit 220:

Claims (12)

A measuring device for measuring the inclination of the roller tangent with respect to the horizontal line each time the roller rotates along the wire from the support point of the steel tower to move the set distance from the lowest point of the wire, and transmits the measured slope of the roller tangent with respect to the horizontal line; And
And a calculator for receiving the inclination and the number of times of measurement from the measuring device and calculating an island degree of the overhead transmission line using the set distance, the inclination, and the number of times of measurement. The apparatus of claim 1, wherein the set distance is inversely proportional to the radius of the roller. 2. The overhead line measuring apparatus of claim 1, wherein the set distance is a circumference of the roller. The method of claim 1, wherein the measuring device
A measuring unit for counting the number of times of measurement and measuring the inclination of the roller tangent with respect to the horizontal line each time the roller moves a predetermined set distance; And
And a transmission unit for transmitting the measured number of times measured by the measurement unit and a slope of the roller tangent to the horizontal line in a wireless communication method. The method of claim 4, wherein the measuring device
And a storage unit for storing the number of times of measurement and the slope of the tangent of the roller with respect to the horizontal line. The method of claim 1, wherein the measuring device
And a guide part for guiding the roller to move along the electric wire. The method of claim 1, wherein the measuring device
And a reduction gear unit configured to reduce the moving speed of the roller at a constant speed so as to maintain the moving speed of the roller. The method of claim 1, wherein the calculator
A receiver for receiving the measurement number and the slope of the roller tangent to the horizontal line from the measuring device; And
And a calculation unit for calculating an ear canal of the overhead transmission line by using the set distance, the number of measurements received by the receiver, and a slope of a roller tangent to the horizontal line. The method of claim 1, wherein the calculator
The degree of declination of the overhead transmission line is calculated using the set distance measured by the number of times measured and the inclination of the roller tangent with respect to the horizontal line. The overhead line measuring apparatus of the overhead transmission line characterized in that the sum. The method of claim 1, wherein the calculator
The ear canal of the overhead transmission line is
Figure pat00005

Through the
The Y is the ear canal of the overhead transmission line, the C is the height of the lowest electric wire minus the total vertical travel distance from the height of the lower pylon to the lowest electric wire of two pylons of different heights, and h is the height of the high pylon of the two pylons. The difference in the vertical height of the low pylon, n is the total horizontal travel distance to the low pylon and the wire lowest point, m is the total horizontal travel distance to the high pylon and wire lowest point measurement Device. 11. The method of claim 10, wherein the total horizontal travel distance to the low pylon and the wire lowest point and the total horizontal travel distance to the high pylon and the low wire point are
The horizontal movement distance and vertical movement distance for each measurement number of the roller are calculated by using the slope of the roller tangent to the horizontal line and the set distance measured for each measurement frequency, and the movement distance distance and vertical movement distance for each measurement number are calculated. The overhead line measuring device of the overhead transmission line characterized in that the sum. The method of claim 1, wherein the calculator
And an inclination of the roller tangent with respect to the horizontal line is equal to or less than a preset set angle range, and determines that the roller has reached the lowest point of the electric wire.
KR1020120098895A 2012-09-06 2012-09-06 Dip measuring apparatus for overhead transmission line KR20140032237A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180050157A (en) * 2016-11-04 2018-05-14 한국전력공사 Dip measuring system for transmission line, and method for installing transmission line used that
KR20190132778A (en) * 2018-05-21 2019-11-29 한국전력공사 Apparatus for measuring position of spacer, Method thereof, and Compuer readable storage medium having the same method
KR20200118641A (en) * 2019-04-08 2020-10-16 한전케이디엔주식회사 Apparatus and method for measuring dip of transmission line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180050157A (en) * 2016-11-04 2018-05-14 한국전력공사 Dip measuring system for transmission line, and method for installing transmission line used that
KR20190132778A (en) * 2018-05-21 2019-11-29 한국전력공사 Apparatus for measuring position of spacer, Method thereof, and Compuer readable storage medium having the same method
KR20200118641A (en) * 2019-04-08 2020-10-16 한전케이디엔주식회사 Apparatus and method for measuring dip of transmission line

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