CN110906870B - Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees - Google Patents

Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees Download PDF

Info

Publication number
CN110906870B
CN110906870B CN201911201460.XA CN201911201460A CN110906870B CN 110906870 B CN110906870 B CN 110906870B CN 201911201460 A CN201911201460 A CN 201911201460A CN 110906870 B CN110906870 B CN 110906870B
Authority
CN
China
Prior art keywords
theta
sag
horizontal angle
theodolite
degrees
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911201460.XA
Other languages
Chinese (zh)
Other versions
CN110906870A (en
Inventor
曹翀
杨作强
李君章
齐林
孙建兴
肖贵成
王家彪
朱兆伟
卢凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Henan Power Transmission and Transformation Construction Co Ltd
Original Assignee
State Grid Corp of China SGCC
Henan Power Transmission and Transformation Construction Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Henan Power Transmission and Transformation Construction Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201911201460.XA priority Critical patent/CN110906870B/en
Publication of CN110906870A publication Critical patent/CN110906870A/en
Application granted granted Critical
Publication of CN110906870B publication Critical patent/CN110906870B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0608—Height gauges
    • 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

Landscapes

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

Abstract

The invention provides a method for observing and adjusting a lead by a gear side sag with a horizontal angle of 90 degrees, which is used for providing an observation method for adopting a special position, reducing distance measurement and improving construction efficiency
Figure DEST_PATH_IMAGE001
The angle is 90 degrees, and then the maximum sag f is calculated by solving the triangle in the established triangle, so that the distance measurement is reduced, and the construction efficiency is improved; under the condition that the wire is not erected yet, the set sag is known and the set sag is equal to the maximum sag f, and the maximum sag f is calculated
Figure 11894DEST_PATH_IMAGE002
And the line is continuously loosened in the erecting process
Figure 729314DEST_PATH_IMAGE002
And meets the requirement.

Description

Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees
Technical Field
The invention belongs to the technical field of sag observation, and particularly relates to a method for observing and adjusting a wire through a side-blocking sag with a horizontal angle of 90 degrees.
Background
In the process of observing the overhead line sag of the power transmission line, the commonly used sag observation methods comprise a gear end observation method, an off-gear observation method, an in-gear observation method and a gear side observation method, wherein due to the fact that the extra-high voltage iron tower is high, observation cannot be carried out on the gear end, the outside of the gear and the inside of the gear, and when the gear side observation is adopted, the distance l between the hanging points is measured at least once every time the sag is measuredmOr lnThe maximum sag is calculated through the hanging point distance, the hanging point distance is measured in a prism-free mode of the total station, and the operation of measuring the horizontal hanging point distance in the prism-free mode of the total station is complex.
Disclosure of Invention
The invention aims to provide a method for observing and adjusting a lead through a gear side sag with a horizontal angle of 90 degrees, which is used for providing an observation method for adopting a special position, reducing distance measurement and improving construction efficiency.
The technical scheme for solving the technical problems of the invention is as follows: a method of adjusting a wire by inspection of a lateral sag at a 90 degree horizontal angle, comprising:
step 1: setting an observation point of a total station instrument as O, the top of a first extra-high voltage iron tower as H, the top of a second extra-high voltage iron tower as Q, the intersection points of the first extra-high voltage iron tower and the second extra-high voltage iron tower with the horizontal plane where the O is located are H ', Q', H 'Q' is l and known, and setting a & ltphi & gt OH & lt 'Q' as thetaf，θfSetting angle H 'OQ' as theta at 90 DEGaMeasuring theta by using total stationaLet tan θb＝tanθa/2；
Step 2: rotating the horizontal angle of the total station by theta b degrees by taking the alignment HH 'as an initial position, recording the intersection point of the extension line of the horizontal angle and the H' Q 'as X, and recording the vertical projection point of the X on the sag as X';
and step 3: let H 'Q' O be thetagOH' is lmOQ' is lnThrough thetaaFinding thetag、lm、ln；
And 4, step 4: let H' X be lxOX is loThrough l, thetaa、θbTo obtain
Figure BDA0002295989790000011
And 5: let [ HOH ] be [ theta ]cAngle QOQ' is thetadMeasuring theta by theodolitec、θd；
Step 6: let HH' be hHQQ' is hQThrough l, thetaa、θc、θdFind hH、hQ；
And 7: let f be the sag to be measured, and h be X' XpAccording to the significance of sag, obtain
Figure BDA0002295989790000021
And 8: let < XOX' be thetaeTheta is measured using theodolitee；
And step 9: by a 1o、θeCalculating hP；
Step 10: through l, thetaa、θb、θc、θd、θeF, when the line is erected, the sag is adjusted by comparing the maximum sag f with a set sag value;
step 11: when the line is not yet erected, f is known as thetaeWithout knowledge, by
Figure BDA0002295989790000022
Figure BDA0002295989790000023
Calculate thetaeAnd the line is continuously loosened during erection to make thetaeMeets the requirements.
In the step 3, theta is obtainedg、lm、lnThe formula of (1) is: thetag＝90°-θa、
Figure BDA0002295989790000024
In the step 4, l is calculatedoThe derivation process of (1) is as follows: because of the fact that
Figure BDA0002295989790000025
Therefore lo＝lmcosθbTherefore, it is
Figure BDA0002295989790000026
H is obtained in the step 6H、hQThe process comprises the following steps:
Figure BDA0002295989790000027
h is obtained in the step 9pThe formula used is: h isp＝lotanθe。
The derivation process of calculating f in step 10 is as follows: because of the fact that
Figure BDA0002295989790000028
Therefore, it is not only easy to use
Figure BDA0002295989790000029
Figure BDA00022959897900000210
Therefore, it is not only easy to use
Figure BDA00022959897900000211
Therefore, it is not only easy to use
Figure BDA00022959897900000212
The invention has the beneficial effects that: by adopting a special position based on the existing gear side observation to make the horizontal angle thetafThe angle is 90 degrees, and then the maximum sag f is calculated by solving the triangle in the established triangle, so that the more complicated measurement of the distance of a hanging point is reduced, and the construction efficiency is improved; in the case of a wire that has not been erected, the set sag is known and satisfies that the set sag is equal to the maximum sag f, by calculating θeAnd the line is loosened during erectioneAnd meets the requirement.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention includes:
step 1: setting an observation point of a total station instrument as O, the top of a first extra-high voltage iron tower as H, the top of a second extra-high voltage iron tower as Q, the intersection points of the first extra-high voltage iron tower and the second extra-high voltage iron tower with the horizontal plane where the O is located are H ', Q', H 'Q' is l and known, and setting a & ltphi & gt OH & lt 'Q' as thetaf，θfSetting angle H 'OQ' as theta at 90 DEGaMeasuring theta by using total stationaLet tan θb＝tanθa/2；
Step 2: rotating the horizontal angle of the total station by theta by taking the alignment HH' as an initial positionbThe intersection point of the horizontal angle extension line and the H ' Q ' is marked as X, and the vertical projection point of the X on the sag is marked as X ';
and step 3: let H 'Q' O be thetagOH' is lmOQ' is lnThrough thetaaFinding thetag、lm、ln；
And 4, step 4: let H' X be lxOX is loThrough l, thetaa、θbTo obtain
Figure BDA0002295989790000031
And 5: let [ HOH ] be [ theta ]cAngle QOQ' is thetadMeasuring theta by theodolitec、θd；
Step 6: let HH' be hHQQ' is hQThrough l, thetaa、θc、θdFind hH、hQ；
And 7: let f be the sag to be measured, and h be X' XpAccording to the significance of sag, obtain
Figure BDA0002295989790000032
And 8: let < XOX' be thetaeTheta is measured using theodolitee；
And step 9: by a 1o、θeCalculating hP；
Step 10: through l, thetaa、θb、θc、θd、θeF, when the line is erected, the sag is adjusted by comparing the maximum sag f with a set sag value;
step 11: when the line is not yet erected, f is known as thetaeWithout knowledge, by
Figure BDA0002295989790000033
Figure BDA0002295989790000034
Calculate thetaeAnd the line is continuously loosened during erection to make thetaeMeets the requirements.
In the step 3, theta is obtainedg、lm、lnThe formula of (1) is: thetag＝90°-θa、
Figure BDA0002295989790000035
In the step 4, l is calculatedoThe derivation process of (1) is as follows: because of the fact that
Figure BDA0002295989790000036
Therefore lo＝lmcosθbTherefore, it is
Figure BDA0002295989790000037
H is obtained in the step 6H、hQThe process comprises the following steps:
Figure BDA0002295989790000041
h is obtained in the step 9pThe formula used is: h isp＝lotanθe。
The derivation process of calculating f in step 10 is as follows: because of the fact that
Figure BDA0002295989790000042
Therefore, it is not only easy to use
Figure BDA0002295989790000043
Figure BDA0002295989790000044
Therefore, it is not only easy to use
Figure BDA0002295989790000045
Therefore, it is not only easy to use
Figure BDA0002295989790000046
In the field of sag observation, adjacent towers are generally not as high in height in consideration of the problem of ground height in the actual erection process, wherein the common maximum sag of a wire between adjacent towers with a height difference of no more than 10% is considered to occur in the center of a span, which is a default technical viewpoint known to those skilled in the art, and in the invention, the calculation is performed on the adjacent towers with a height difference of no more than 10%, and the default maximum sag occurs at the midpoint of the span l.
By adopting a special position based on the existing gear side observation to make the horizontal angle thetafThe angle is 90 degrees, and then the maximum sag f is calculated by solving the triangle in the established triangle, so that the more complicated measurement of the distance of a hanging point is reduced, and the construction efficiency is improved; in the case of a wire that has not been erected, the set sag is known and satisfies that the set sag is equal to the maximum sag f, by calculating θeAnd the line is loosened during erectioneAnd meets the requirement.

Claims (6)

1. A method for observing and adjusting a lead through a gear side sag with a horizontal angle of 90 degrees is characterized by comprising the following steps:
step 1: setting a theodolite observation point as O, the top of a first extra-high voltage iron tower as H, the top of a second extra-high voltage iron tower as Q, the intersection points of the first extra-high voltage iron tower and the second extra-high voltage iron tower with the horizontal plane where the O is located are H ', Q', H 'Q' is l and known, and setting a & ltphi & gt OH & lt 'Q' as thetaf，θfSetting angle H 'OQ' as theta at 90 DEGaMeasuring theta by using theodoliteaLet tan θb＝tanθaSetting the maximum sag as f;
step 2: rotating the theodolite horizontal angle by theta with the alignment HH' as the initial positionbThe intersection point of the horizontal angle extension line and the H ' Q ' is marked as X, and the vertical projection point of the X on the sag is marked as X ';
and step 3: let H 'Q' O be thetagOH' is lmOQ' is lnThrough thetaaFinding thetag、lm、ln；
And 4, step 4: let H' X be lxOX is loThrough l, thetaa、θbTo obtain
Figure FDA0002295989780000011
And 5: let [ HOH ] be [ theta ]cAngle QOQ' is thetadMeasuring theta by theodolitec、θd；
Step 6: let HH' be hHQQ' is hQThrough l, thetaa、θc、θdFind hH、hQ；
And 7: let f be the sag to be measured, and h be X' XpAccording to the significance of sag, obtain
Figure FDA0002295989780000012
And 8: let < XOX' be thetaeTheta is measured using theodolitee；
And step 9: by a 1o、θeCalculating hP；
Step 10: through l, thetaa、θb、θc、θd、θeF, when the line is erected, the sag is adjusted by comparing the maximum sag f with a set sag value;
step 11: when the line is not yet erected, f is known as thetaeWithout knowledge, by
Figure FDA0002295989780000013
Figure FDA0002295989780000014
Calculate thetaeAnd the line is continuously loosened during erection to make thetaeMeets the requirements.
2. The method of claim 1, wherein θ is determined in step 3 by observing the alignment of the conductive lines with a horizontal angle of 90 degreesg、lm、lnThe formula of (1) is: thetag＝90°-θa、
Figure FDA0002295989780000015
Figure FDA0002295989780000016
3. The method of claim 2, wherein the step 4 comprises calculating loThe derivation process of (1) is as follows: because of the fact that
Figure FDA0002295989780000021
Therefore lo＝lmcosθbTherefore, it is
Figure FDA0002295989780000022
4. The method of claim 3, wherein h is determined in step 6H、hQThe process comprises the following steps:
Figure FDA0002295989780000023
Figure FDA0002295989780000024
5. the method of claim 4, wherein h is determined in step 9pThe formula used is: h isp＝lotanθe。
6. The method of claim 5, wherein the derivation of f in step 10 is: because of the fact that
Figure FDA0002295989780000025
Therefore, it is not only easy to use
Figure FDA0002295989780000026
Therefore, it is not only easy to use
Figure FDA0002295989780000027
Therefore, it is not only easy to use
Figure FDA0002295989780000028
CN201911201460.XA 2019-11-29 2019-11-29 Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees Active CN110906870B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911201460.XA CN110906870B (en) 2019-11-29 2019-11-29 Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911201460.XA CN110906870B (en) 2019-11-29 2019-11-29 Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees

Publications (2)

Publication Number Publication Date
CN110906870A CN110906870A (en) 2020-03-24
CN110906870B true CN110906870B (en) 2021-07-27

Family

ID=69820789

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911201460.XA Active CN110906870B (en) 2019-11-29 2019-11-29 Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees

Country Status (1)

Country Link
CN (1) CN110906870B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306102A (en) * 1989-02-15 1990-12-19 Hitachi Cable Ltd Sag measuring method and tightening method for transmission line and tool therefor
JPH03199903A (en) * 1989-12-27 1991-08-30 Tokyo Electric Power Co Inc:The Apparatus for detecting looseness of transmission line
US6229451B1 (en) * 1998-02-13 2001-05-08 Linesoft Corporation Apparatus and method of monitoring a power transmission line
CN102346014A (en) * 2011-06-20 2012-02-08 西安工程大学 Method for measuring arc sag of wire of power transmission line based on image processing
CN105222737A (en) * 2015-09-30 2016-01-06 国网山东省电力公司淄博供电公司 Transmission line of electricity bow line sag measuring method
CN106123848A (en) * 2016-06-28 2016-11-16 陕西科技大学 A kind of measuring method of conducting wire sag
CN106248048A (en) * 2016-08-10 2016-12-21 中国电力科学研究院 A kind of shelves side based on total powerstation conducting wire sag observation procedure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102346029B (en) * 2010-08-04 2014-01-15 辽宁省送变电工程公司 Device for detecting observing angle of overhead line sag and control method thereof
CN102721371B (en) * 2012-07-03 2014-08-06 华北电力大学（保定） Method for calculating sag of power transmission line

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02306102A (en) * 1989-02-15 1990-12-19 Hitachi Cable Ltd Sag measuring method and tightening method for transmission line and tool therefor
JPH03199903A (en) * 1989-12-27 1991-08-30 Tokyo Electric Power Co Inc:The Apparatus for detecting looseness of transmission line
US6229451B1 (en) * 1998-02-13 2001-05-08 Linesoft Corporation Apparatus and method of monitoring a power transmission line
CN102346014A (en) * 2011-06-20 2012-02-08 西安工程大学 Method for measuring arc sag of wire of power transmission line based on image processing
CN105222737A (en) * 2015-09-30 2016-01-06 国网山东省电力公司淄博供电公司 Transmission line of electricity bow line sag measuring method
CN106123848A (en) * 2016-06-28 2016-11-16 陕西科技大学 A kind of measuring method of conducting wire sag
CN106248048A (en) * 2016-08-10 2016-12-21 中国电力科学研究院 A kind of shelves side based on total powerstation conducting wire sag observation procedure

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
Measurements and calculations of gravitational and electrostatic wire sags for a 4.6 meter long drift chamber;S.Sudou等;《Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment》;19961231;第383卷(第2-3期);第391-398页 *
rt三角形原理在弧垂观测计算中的应用;渡鸦文档;《道客巴巴http://www.doc88.com/p-2962424372129.html》;20150315;正文第1-3页 *
基于架空输电线路弧垂测量法的研究;许建清等;《电力安全技术》;20161231;第18卷(第8期);全文 *
档侧任意点角度法观测线路弧垂;王健;《中华民居》;20121130;全文 *
经纬仪侧面观测弧垂的方法;朱任华;《农田水利与小水电》;19901231(第4期);第27-28页 *

Also Published As

Publication number Publication date
CN110906870A (en) 2020-03-24

Similar Documents

Publication Publication Date Title
WO2021109633A1 (en) Particle swarm algorithm-based shielding failure trip-out rate evaluation method for power transmission line
CN103200358B (en) Coordinate transformation method between video camera and target scene and device
CN107525496B (en) Device and method for measuring sag of cable of ultra-large span suspension bridge
CN106248048A (en) A kind of shelves side based on total powerstation conducting wire sag observation procedure
CN103115605A (en) Subway shaft orientated measurement method based on connected triangle
CN106123848B (en) A kind of measurement method of conducting wire sag
CN102147832A (en) Method for identifying spatial location of guide wires and aerial earth wire of power transmission line
CN109458988B (en) Holding pole inclination angle measuring method based on UWB wireless distance measuring technology
CN110906870B (en) Method for observing and adjusting lead through gear side sag with horizontal angle of 90 degrees
CN102589533A (en) Method for measuring hidden point position coordinates by utilizing total-station instrument
CN102607511B (en) Method for performing engineering surveying by employing method for solving triangle through cosine law
CN110906872B (en) Method for observing and adjusting lead through high-efficiency gear side sag
CN108195362A (en) A kind of receiving platform and height transfer method transmitted for the vertical elevation of total powerstation
CN105222737B (en) Transmission line of electricity bow line sag measuring method
CN110906871B (en) Method for observing and adjusting lead through gear side sag
CN103022945B (en) Method for mounting jumper wire of power transmission line tension-resisting tower
CN101915566B (en) Method for measuring thunderbolt shielding failure of overhead power transmission line under condition of unequal heights of both span ends
CN108362274A (en) Subway surveys and draws Non orientation Traverse computational methods
CN202420497U (en) Auxiliary measuring device for measuring point position coordinate by using total station
CN204835411U (en) Special high voltage direct current engineering polar line wall bushing arrangement structure
WO2020232978A1 (en) Method for assisting filling operation of subgrade and dam
CN105809609A (en) Building damage assessment method based on instrument seismic intensity
CN205744730U (en) A kind of square bar bracing wire anchor ear
CN112161611B (en) In-plant concentricity positioning method for offshore wind power guide frame
CN115031673A (en) Underwater push-out type final joint three-wire positioning method for immersed tube tunnel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant