CN203376088U - Power transmission line conductor stress and sag monitoring device - Google Patents

Power transmission line conductor stress and sag monitoring device Download PDF

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Publication number
CN203376088U
CN203376088U CN201320409116.1U CN201320409116U CN203376088U CN 203376088 U CN203376088 U CN 203376088U CN 201320409116 U CN201320409116 U CN 201320409116U CN 203376088 U CN203376088 U CN 203376088U
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Prior art keywords
transmission line
sag
monitoring device
ultrasonic receiver
base station
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CN201320409116.1U
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Chinese (zh)
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马维青
吕玉祥
赵晓龙
丁龙
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SHANXI ELECTRIC POWER CO Ltd YANGQUAN POWER SUPPLY BRANCH
State Grid Corp of China SGCC
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SHANXI ELECTRIC POWER CO Ltd YANGQUAN POWER SUPPLY BRANCH
State Grid Corp of China SGCC
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Abstract

The utility model provides a power transmission line conductor stress and sag monitoring device, belonging to the technical field of power transmission line conductor stress and sag monitoring. The technical problem to be solved is that the utility model provides a monitoring device capable of accurately measuring the power transmission line conductor stress and sag, a used technical scheme is that the power transmission line conductor stress and sag monitoring device comprises a fiber tension sensor, an ultrasonic wave generator, a first ultrasonic wave receiver, a second ultrasonic wave receiver, an inclination angle sensor, a temperature sensor, a wind speed sensor, a monitoring controller, a power transmission line base station server and a monitoring center computer. The device is suitable for the power department.

Description

Power line conductive uniaxial stress and sag monitoring device
Technical field
The utility model power line conductive uniaxial stress and sag monitoring device, belong to power line conductive uniaxial stress and sag monitoring device technical field.
Background technology
Overhead transmission line design, construction, the subject matter that will face in service are exactly the monitoring problem to transmission pressure stress and sag, the subtle change of wire and lightning conducter length, can cause the larger variation of the corresponding sag of wire and lightning conducter and stress, external environment, as the variation of temperature, external loads (freeze, wind blows etc.), all can cause that wire and lightning conducter elongate or shorten; These conditions cause the length of wire elongation or shortening to compare very little with the physical length of wire, but the variation of its caused conducting wire sag and stress is but quite obvious, this can reflect significantly when the construction stringing is adjusted sag, so the stress of monitoring and measuring wire and sag are highly significant.
The method that survey stress adopts at present is mainly and mounts foil gauge on wire, and foil gauge is subject to the interference of the high-intensity magnetic field that high voltage transmission line produces, the precision of this kind of method measurement is not high, additive method has the serviceability temperature obliquity sensor, coordinate image recognition technology to measure, but the method measurement data is instantaneous value, exist measuring accuracy not high, differ larger with actual value, and the operation conditions that can not reflect on the whole institute's test aircraft ceases to be busy place circuit, its measurement cost is also too expensive in addition.
The utility model content
The utility model overcomes the deficiency that prior art exists, and technical matters to be solved is: a kind of monitoring device that can accurately measure power line conductive uniaxial stress and sag is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: power line conductive uniaxial stress and sag monitoring device comprise: optical fiber pulling force sensor, ultrasonic generator, the first ultrasonic receiver, the second ultrasonic receiver, obliquity sensor, temperature sensor, air velocity transducer, monitor controller, transmission line of electricity base station server and Surveillance center's computing machine;
Described optical fiber pulling force sensor and ultrasonic generator are arranged on transmission line wire, and described ultrasonic generator is the packaged type ultrasonic generator; Described the first ultrasonic receiver and the second ultrasonic receiver are arranged on respectively on the shaft tower at transmission line wire two ends; Described obliquity sensor, temperature sensor, air velocity transducer are arranged on the shaft tower of transmission line wire together with monitor controller;
Described optical fiber pulling force sensor, ultrasonic generator, the first ultrasonic receiver and the second ultrasonic receiver all are connected with monitor controller and carry out communication by wireless network, and described obliquity sensor, temperature sensor and air velocity transducer all are connected with monitor controller; Described monitor controller also is connected with the first wireless transport module and power supply, and described transmission line of electricity base station server is connected with the second wireless transport module, and above-mentioned the first wireless transport module is connected with the second wireless transport module by wireless communication mode; Described transmission line of electricity base station server is connected with the Surveillance center's computing machine that is arranged on the power monitoring center.
Described power line conductive uniaxial stress and sag monitoring device also include the monitoring camera, and described monitoring camera is arranged on the shaft tower of transmission line wire and is connected with monitor controller.
Described transmission line of electricity base station server and Surveillance center's computing machine are connected with respectively a GPRS communication module and the 2nd GPRS communication module, and the transmission line of electricity base station server is connected by the GPRS wireless communication networks with the Surveillance center computing machine.
The beneficial effect that the utility model compared with prior art has is:
One, the utility model, by optical fiber pulling force sensor and ultrasonic receiving device, relies on computing machine by two kinds of different modes, accurately reacts on the whole stress and the sag of transmission line wire, realizes the accurate monitoring of stress and the sag of transmission line wire;
Two, the utility model utilizes optical fiber pulling force sensor monitoring power line conductive uniaxial stress can reduce electromagnetic interference (EMI), and the stress data of the transmission line wire of measurement is accurate; Utilize ultrasonic receiving device, by record multi-group data calculate its arithmetical mean can obtain one more accurate, more approach the conducting wire sag numerical value of actual value.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail:
Fig. 1 is electrical block diagram of the present utility model;
In figure: 1 is that optical fiber pulling force sensor, 2 is that ultrasonic generator, 3 is that the first ultrasonic receiver, 4 is that the second ultrasonic receiver, 5 is that obliquity sensor, 6 is that temperature sensor, 7 is that air velocity transducer, 8 is that monitor controller, 9 is that transmission line of electricity base station server, 10 is that Surveillance center's computing machine, 11 is that the first wireless transport module, 12 is that power supply, 13 is that the second wireless transport module, 14 is that a GPRS communication module, 15 is the 2nd GPRS communication module.
Embodiment
As shown in Figure 1, the utility model power line conductive uniaxial stress and sag monitoring device comprise: optical fiber pulling force sensor 1, ultrasonic generator 2, the first ultrasonic receiver 3, the second ultrasonic receiver 4, obliquity sensor 5, temperature sensor 6, air velocity transducer 7, monitor controller 8, transmission line of electricity base station server 9 and Surveillance center's computing machine 10.
Described optical fiber pulling force sensor 1 and ultrasonic generator 2 are arranged on transmission line wire, and optical fiber pulling force sensor 1 can be arranged on the shaft tower wire hitch point place of transmission line wire, measure the pulling force of hitch point place transmission line wire; Described ultrasonic generator 2 is the packaged type ultrasonic generator, and ultrasonic generator 2 can rely on gravity to move to the minimum point of transmission line wire, the i.e. point of sag maximum; Described the first ultrasonic receiver 3 and the second ultrasonic receiver 4 are arranged on respectively on the shaft tower at transmission line wire two ends, and the first ultrasonic receiver 3 and the second ultrasonic receiver 4 can receive the sonar signal that ultrasonic generator 2 sends; Described obliquity sensor 5, temperature sensor 6, air velocity transducer 7 are arranged on the shaft tower of transmission line wire together with monitor controller 8, obliquity sensor 5 also can be arranged on the shaft tower wire hitch point place of transmission line wire, measures the inclination angle of hitch point place transmission line wire.
Described optical fiber pulling force sensor 1, ultrasonic generator 2, the first ultrasonic receiver 3 all are connected and carry out communication with monitor controller 8 by wireless network with the second ultrasonic receiver 4, described obliquity sensor 5, temperature sensor 6 and air velocity transducer 7 all are connected with monitor controller 8, described monitor controller 8 also is connected with the first wireless transport module 11 and power supply 12, described power supply 12 can adopt lithium battery also can adopt on line and get point apparatus, for whole device power supply; Described power line conductive uniaxial stress and sag monitoring device also include the monitoring camera, and described monitoring camera is arranged on the shaft tower of transmission line wire and is connected with monitor controller 8, the icing situation that can observe transmission line wire by the monitoring camera; Above-mentioned measurement mechanism all is sent to monitor controller 8 by each self-monitoring data.
Described transmission line of electricity base station server 9 is connected with the second wireless transport module 13, and above-mentioned the first wireless transport module 11 is connected with the second wireless transport module 13 by wireless communication mode; Described transmission line of electricity base station server 9 is connected by wired or wireless mode with the Surveillance center's computing machine 10 that is arranged on the power monitoring center; Described transmission line of electricity base station server 9 can be connected by optical fiber with Surveillance center computing machine 10, described transmission line of electricity base station server 9 and Surveillance center's computing machine 10 also can be connected with respectively a GPRS communication module 14 and the 2nd GPRS communication module 15, and transmission line of electricity base station server 9 is connected by the GPRS wireless communication networks with Surveillance center computing machine 10; Described monitor controller 8 is sent to Surveillance center's computing machine 10 by the information of collection, and Surveillance center's computing machine 10 is by predefined computing method, the stress of computing electric power line wire and sag.
The utility model can, by stress and the sag of power line conductive uniaxial stress and sag monitoring method computing electric power line wire, said method comprising the steps of:
Step 1: installing optical fibres pulling force sensor 1 on transmission line wire records the pulling force of transmission line wire by optical fiber pulling force sensor 1
Figure 2013204091161100002DEST_PATH_IMAGE001
;
Step 2: by the pulling force of the transmission line wire that records in step 1
Figure 580668DEST_PATH_IMAGE001
the stress of computing electric power line wire
Figure 822293DEST_PATH_IMAGE002
, and by the stress of transmission line wire the sag of computing electric power line wire
Figure 2013204091161100002DEST_PATH_IMAGE003
;
Step 3: packaged type ultrasonic generator 2 is installed on transmission line wire, the first ultrasonic receiver 3 and the second ultrasonic receiver 4 are installed respectively on the shaft tower at transmission line wire two ends, are recorded the time of reception that the first ultrasonic receiver 3 and the second ultrasonic receiver 4 receive ultrasonic generator 2 sonar signals
Figure 865522DEST_PATH_IMAGE004
with
Figure 2013204091161100002DEST_PATH_IMAGE005
, and pass through time of reception
Figure 154683DEST_PATH_IMAGE004
with
Figure 555708DEST_PATH_IMAGE005
calculate separately the distance with ultrasonic generator 2 with
Figure 2013204091161100002DEST_PATH_IMAGE007
; Obliquity sensor 5 also is installed, the position angle that records transmission line wire by obliquity sensor 5 on the shaft tower at transmission line wire two ends
Figure 257134DEST_PATH_IMAGE008
;
Step 4: the time of reception that relies on the first ultrasonic receiver 3 of recording in step 3 and the second ultrasonic receiver 4 to receive ultrasonic generators 2 by bistatic ultrasound wave localization method
Figure 714267DEST_PATH_IMAGE004
,
Figure 602588DEST_PATH_IMAGE005
separately with the distance of ultrasonic generator 2
Figure 485094DEST_PATH_IMAGE006
,
Figure 24528DEST_PATH_IMAGE007
the position angle that also has obliquity sensor 5 to record
Figure 967076DEST_PATH_IMAGE008
the sag of computing electric power line wire
Figure 2013204091161100002DEST_PATH_IMAGE009
, and by the sag of transmission line wire
Figure 342694DEST_PATH_IMAGE009
the stress of computing electric power line wire
Figure 717306DEST_PATH_IMAGE010
;
Step 5: by the stress value drawn in step 2
Figure 861979DEST_PATH_IMAGE002
with the stress value drawn in step 4
Figure 975429DEST_PATH_IMAGE010
, calculate the two arithmetical mean stress value
Figure 2013204091161100002DEST_PATH_IMAGE011
;
Step 6: by the sag drawn in step 2 with the sag drawn in step 3
Figure 249601DEST_PATH_IMAGE009
, calculate the two arithmetical mean sag
Figure 576678DEST_PATH_IMAGE012
;
Step 7: repeat above-mentioned steps one to step 5, draw many group stress values
Figure 275076DEST_PATH_IMAGE011
and sag
Figure 687602DEST_PATH_IMAGE012
, generally select 20 groups to 30 groups data, pass through stress value
Figure 653284DEST_PATH_IMAGE011
utilize least square method to draw the stress matched curve, pass through sag
Figure 21818DEST_PATH_IMAGE012
utilize least square method to draw the sag matched curve.
In described step 2 by the pulling force of transmission line wire
Figure 477070DEST_PATH_IMAGE001
the stress of computing electric power line wire
Figure 48997DEST_PATH_IMAGE002
computing formula be:
Figure 615107DEST_PATH_IMAGE014
Wherein: the cross-sectional area that s is transmission line wire.
In described step 2 by the stress of transmission line wire
Figure 605191DEST_PATH_IMAGE002
the sag of computing electric power line wire
Figure 231344DEST_PATH_IMAGE003
computing formula be:
Figure 290567DEST_PATH_IMAGE016
Wherein:
Figure DEST_PATH_IMAGE017
for transmission line wire minimum point stress, the ratio that g is transmission line wire carries.
In described step 4 by the sag of bistatic ultrasound wave localization method computing electric power line wire
Figure 847319DEST_PATH_IMAGE009
comprise the following steps:
Steps A, set up rectangular coordinate system, and the line of 4 two of the first ultrasonic receiver 3 and the second ultrasonic receivers of take is X-axis, and direction is pointed to the second ultrasonic receivers 4 by the first ultrasonic receiver 3; The mid point of the first ultrasonic receiver 3 and 4 two lines of the second ultrasonic receiver of take is initial point, and doing vertical line at initial point is Y-axis, the direction directed towards ground;
Step B, the coordinate of supposing the first ultrasonic receiver 3 for (
Figure 941177DEST_PATH_IMAGE018
,
Figure DEST_PATH_IMAGE019
), the coordinate of the second ultrasonic receiver 4 be (
Figure 423718DEST_PATH_IMAGE020
,
Figure DEST_PATH_IMAGE021
), the coordinate of ultrasonic generator 2 is (x, y), by coordinate, sets up system of equations:
Figure 2013204091161100002DEST_PATH_IMAGE025
Wherein:
Figure 157188DEST_PATH_IMAGE026
be the distance of the first ultrasonic receiver 3 and ultrasonic generator 2,
Figure 2013204091161100002DEST_PATH_IMAGE027
be the distance of the second ultrasonic receiver 4 to ultrasonic generator 2;
Step C, calculate sag by the system of equations in step B
Figure 2784DEST_PATH_IMAGE009
,
System of equations conversion in step B can obtain
Figure DEST_PATH_IMAGE029
Figure DEST_PATH_IMAGE031
By the above formula substitution
Figure 639564DEST_PATH_IMAGE032
have:
Figure 890602DEST_PATH_IMAGE036
And then draw:
Above formula is brought into
Figure 235280DEST_PATH_IMAGE031
Can obtain two groups of solutions: (
Figure DEST_PATH_IMAGE041
) and (
Figure 756391DEST_PATH_IMAGE042
), in the substitution positioning equation, can obtain two groups of solutions respectively
Figure 458637DEST_PATH_IMAGE044
Figure 178331DEST_PATH_IMAGE046
The application position angle
Figure 425773DEST_PATH_IMAGE008
decision making:
If
Figure DEST_PATH_IMAGE047
, get
Figure 184913DEST_PATH_IMAGE048
If
Figure DEST_PATH_IMAGE049
, get
Figure 176002DEST_PATH_IMAGE050
By the sag computing formula
Figure 202733DEST_PATH_IMAGE052
Obtain the sag of transmission line wire
Figure 683393DEST_PATH_IMAGE009
.
In described step 4 by the sag of transmission line wire
Figure 179096DEST_PATH_IMAGE009
the stress of computing electric power line wire
Figure 456100DEST_PATH_IMAGE002
computing formula be:
Figure 150387DEST_PATH_IMAGE054
Wherein:
Figure 192161DEST_PATH_IMAGE017
for transmission line wire minimum point stress, the ratio that g is transmission line wire carries.
Above-mentioned transmission line wire minimum point stress
Figure 971898DEST_PATH_IMAGE017
can directly from power supply department, obtain, different wires is to there being different minimum point stress
Figure 304791DEST_PATH_IMAGE017
; The ratio of above-mentioned transmission line wire carries g, measure and calculate by multiple sensors, ratio commonly used carries and has seven kinds, as carried from anharmonic ratio, the ice anharmonic ratio is carried, the wire deadweight and ice heavy always than year, wind pressure ratio is carried during without ice, wind pressure ratio during icing is carried, comprehensive ratio while without ice, wind being arranged carries and comprehensive ratio while having ice that wind is arranged carries, and all can calculate acquisition by formula.
The utility model, by optical fiber pulling force sensor and ultrasonic receiving device, relies on computing machine by two kinds of different modes, accurately reacts on the whole stress and the sag of transmission line wire, realizes the accurate monitoring of stress and the sag of transmission line wire; The utility model utilizes optical fiber pulling force sensor monitoring power line conductive uniaxial stress can reduce electromagnetic interference (EMI), and the stress data of the transmission line wire of measurement is accurate; Utilize ultrasonic receiving device, by record multi-group data calculate its arithmetical mean can obtain one more accurate, more approach the conducting wire sag numerical value of actual value.

Claims (3)

1. power line conductive uniaxial stress and sag monitoring device, is characterized in that: comprising: optical fiber pulling force sensor (1), ultrasonic generator (2), the first ultrasonic receiver (3), the second ultrasonic receiver (4), obliquity sensor (5), temperature sensor (6), air velocity transducer (7), monitor controller (8), transmission line of electricity base station server (9) and Surveillance center's computing machine (10);
Described optical fiber pulling force sensor (1) and ultrasonic generator (2) are arranged on transmission line wire, and described ultrasonic generator (2) is the packaged type ultrasonic generator; Described the first ultrasonic receiver (3) and the second ultrasonic receiver (4) are arranged on respectively on the shaft tower at transmission line wire two ends; Described obliquity sensor (5), temperature sensor (6), air velocity transducer (7) and monitor controller (8) are arranged on the shaft tower of transmission line wire together;
Described optical fiber pulling force sensor (1), ultrasonic generator (2), the first ultrasonic receiver (3) and the second ultrasonic receiver (4) all are connected and carry out communication with monitor controller (8) by wireless network, and described obliquity sensor (5), temperature sensor (6) and air velocity transducer (7) all are connected with monitor controller (8); Described monitor controller (8) also is connected with the first wireless transport module (11) and power supply (12), described transmission line of electricity base station server (9) is connected with the second wireless transport module (13), and above-mentioned the first wireless transport module (11) is connected with the second wireless transport module (13) by wireless communication mode; Described transmission line of electricity base station server (9) is connected with the Surveillance center's computing machine (10) that is arranged on the power monitoring center.
2. power line conductive uniaxial stress according to claim 1 and sag monitoring device, it is characterized in that: described power line conductive uniaxial stress and sag monitoring device also include the monitoring camera, and described monitoring camera is arranged on the shaft tower of transmission line wire and is connected with monitor controller (8).
3. power line conductive uniaxial stress according to claim 1 and 2 and sag monitoring device, it is characterized in that: described transmission line of electricity base station server (9) and Surveillance center's computing machine (10) are connected with respectively a GPRS communication module (14) and the 2nd GPRS communication module (15), and transmission line of electricity base station server (9) is connected by the GPRS wireless communication networks with Surveillance center's computing machine (10).
CN201320409116.1U 2013-07-10 2013-07-10 Power transmission line conductor stress and sag monitoring device Expired - Fee Related CN203376088U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331099A (en) * 2014-11-17 2015-02-04 国网河南省电力公司南阳供电公司 Substation line overvoltage data acquisition and storage monitoring cooling device and monitoring method thereof
CN104458079A (en) * 2014-12-09 2015-03-25 国家电网公司 Health monitoring method of distribution type optical fiber sensing pole and tower
CN105352547A (en) * 2015-11-19 2016-02-24 国家电网公司 Sensor-information-fusion-based monitoring apparatus and method of transmission line tower
CN106546205A (en) * 2016-12-06 2017-03-29 国网山东省电力公司鄄城县供电公司 Power transmission line sag monitoring device, server and method
CN108805890A (en) * 2018-03-26 2018-11-13 西安电子科技大学 A kind of arc hammer measurement method based on power transmission line image characteristic point
CN112161653A (en) * 2020-09-07 2021-01-01 南方电网科学研究院有限责任公司 Wind resistance coefficient measuring device and method for overhead power transmission line
CN112525260A (en) * 2020-11-20 2021-03-19 杭州一益信息技术有限公司 Conductor sag double-identification monitoring method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104331099A (en) * 2014-11-17 2015-02-04 国网河南省电力公司南阳供电公司 Substation line overvoltage data acquisition and storage monitoring cooling device and monitoring method thereof
CN104458079A (en) * 2014-12-09 2015-03-25 国家电网公司 Health monitoring method of distribution type optical fiber sensing pole and tower
CN105352547A (en) * 2015-11-19 2016-02-24 国家电网公司 Sensor-information-fusion-based monitoring apparatus and method of transmission line tower
CN106546205A (en) * 2016-12-06 2017-03-29 国网山东省电力公司鄄城县供电公司 Power transmission line sag monitoring device, server and method
CN106546205B (en) * 2016-12-06 2019-01-15 嘉兴凯蒂市场营销策划有限公司 Power transmission line sag monitoring device, server and method
CN108805890A (en) * 2018-03-26 2018-11-13 西安电子科技大学 A kind of arc hammer measurement method based on power transmission line image characteristic point
CN112161653A (en) * 2020-09-07 2021-01-01 南方电网科学研究院有限责任公司 Wind resistance coefficient measuring device and method for overhead power transmission line
CN112525260A (en) * 2020-11-20 2021-03-19 杭州一益信息技术有限公司 Conductor sag double-identification monitoring method
CN112525260B (en) * 2020-11-20 2022-04-29 杭州一益信息技术有限公司 Conductor sag double-identification monitoring method

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