CN201653621U - Power transmission overhead ground wire ice coverage online monitoring device - Google Patents
Power transmission overhead ground wire ice coverage online monitoring device Download PDFInfo
- Publication number
- CN201653621U CN201653621U CN2009203519749U CN200920351974U CN201653621U CN 201653621 U CN201653621 U CN 201653621U CN 2009203519749 U CN2009203519749 U CN 2009203519749U CN 200920351974 U CN200920351974 U CN 200920351974U CN 201653621 U CN201653621 U CN 201653621U
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- horizon bar
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Abstract
The utility model provides a power transmission overhead ground wire ice coverage online monitoring device, which comprises a casing, a testing conductor parallel to power transmission overhead ground wires, a stressed component, a lever and a displacement sensor. The stressed component inside the casing can deform along the vertical direction under pressure, the lever is respectively connected with the conductor and the stressed component and includes a horizontal rod and a connecting rod perpendicularly connected with the horizontal rod, the displacement sensor inside the casing detects deformation of the stressed component, one end of the horizontal rod can be rotatably fixed on the inner lateral wall of the casing, while the other end is perpendicularly connected with one end of the connecting rod, the other end of the connecting rod is perpendicularly connected with the testing conductor, the middle portion of the horizontal rod is connected with the top of the stressed component, and the horizontal rod can generate pressure upon the stressed component under action of the connecting rod. The online monitoring device has the advantages of simple structure, convenient use, high safety coefficient, and capability of effectively monitoring thickness of ice coverage of high voltage operation lines on line.
Description
Technical field
The utility model relates to the high voltage supply electric power monitoring, particularly a kind of transmission of electricity aerial earth wire icing on-Line Monitor Device.
Background technology
No matter in the mountain area or the plains region, spring, winter, the lead of transmission line of electricity all can produce the icing phenomenon.The swing of wire icing under wind action, especially ultra-high-tension power transmission line has been caused very big destruction, caused the ice damage accident to take place again and again, tilted as ice sudden strain of a muscle, lead whiplash, shaft tower, even shaft tower is toppled over, lead ground connection etc., is seriously threatening the safe operation of electric device.
The wire icing of transmission line of electricity is could form under specific natural environmental condition, just may form icing when the temperature and humidity of air reaches certain condition, and the wind speed and direction difference, and the speed that forms icing also has nothing in common with each other.It is approaching more when vertical to be generally wind direction and lead direction, and wind speed is fast more, and the speed that forms icing is just fast more.After temperature and humidity satisfied condition, the amount that forms icing was decided by wind speed, when wind friction velocity is calm or gentle breeze, can only form icing as thin as a wafer.After wind speed was greater than certain speed, then the icing on the lead can be long-pending more thick more.And lead rotates under the effect of wind-force, thereby forms flat icepro type icing, when icing increases to certain thickness, is easy to then occur that ice dodges, wind whip even shaft tower tilt and collapse accidents such as ground connection.
In overhead transmission line, the ice covering thickness maximum of aerial earth wire, this be because in the lead owing to there is electric current to pass through to produce heat, wire icing is had the thawing effect, and does not have electric current to pass through in the ground wire, do not produce heat, so the ice covering thickness maximum of ground wire.Therefore under actual conditions, aerial earth wire often is damaged earlier, and the impaired side that often occurs in aerial earth wire earlier of shaft tower.
Therefore in actual applications, the object of the icing of overhead transmission line monitoring is aerial earth wire.By the icing situation of monitoring aerial earth wire, can learn the maximal value of coated by ice of overhead power transmission line situation.Present employed pole line on-Line Monitor Device (system) needs parameters such as monitoring wind-force size, wind direction angle could estimate the pole line ice covering thickness.Therefore, complicated, high, the terminal computation complexity height of cost of present employed monitoring device design, and precision is lower.In addition, most of device for monitoring icing need the using active device, and this is lower at on-line monitoring process safe coefficient, causes danger easily.
The utility model content
For fear of the problems referred to above, the utility model provides a kind of transmission of electricity aerial earth wire icing on-Line Monitor Device, and it is simple in structure, and is easy to use, the safety coefficient height, can carry out the circuit of high-voltage operation online, monitor ice covering thickness effectively.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of transmission of electricity aerial earth wire icing on-Line Monitor Device comprises:
Housing;
With the test lead that be arranged in parallel of transmission of electricity aerial earth wire;
Be arranged in the described housing, can produce the stressed member of deformation vertically under pressure;
The lever that is connected with stressed member with described test lead respectively, described lever comprises horizon bar and the connecting rod that vertically is connected with horizon bar; With
Be arranged in the described housing, detect the displacement transducer of the deformation quantity of described stressed member;
Wherein, an end of described horizon bar is rotatably mounted to the madial wall of described housing, and vertical connection of an end of the other end of described horizon bar and described connecting rod, the other end of described connecting rod is connected with described test lead is vertical;
The middle part of described horizon bar is connected with the top of stressed member, and described horizon bar can produce pressure to described stressed member under the effect of connecting rod.
Preferably, an end of described horizon bar is rotatably mounted to the madial wall of described housing by balance pivot;
Described balance pivot comprises two riveting iron, is individually fixed in two axle sleeves on two riveting iron, the lever collar, and the fulcrum central shaft that is arranged in described two axle sleeves and the lever collar rotationally;
Wherein, the described lever collar is between two axle sleeves, and described two riveting ferropexies are in the madial wall of described housing, and the described lever collar is connected with an end of described horizon bar.
Preferably, the middle part of described horizon bar is connected with the top of stressed member by vertical damping part.
Preferably, described vertical damping part is professional damping spring or professional vibroshock.
Preferably, described vertical damping part comprises the outer protection cover.
Preferably, the other end of described horizon bar links to each other with madial wall by horizontal damping part,
Described horizontal damping part comprises that the bottom surface is fixed in the rectangular parallelepiped shell of the madial wall of described housing, with two horizontal baffles and two vertical baffles of being connected with the madial wall of described rectangular parallelepiped shell by damping spring respectively;
Do not contact between described two horizontal baffles and described two vertical baffles;
The other end of described horizon bar stretches in the described rectangular parallelepiped shell from the end face of described rectangular parallelepiped shell, and the other end of described horizon bar is between described two horizontal baffles and two vertical baffles.
Preferably, the gap between the other end of described two vertical baffles and described horizon bar is zero, and the spacing between described two horizontal baffles is the work range of described displacement transducer.
Preferably, described damping spring is professional damping spring or professional vibroshock.
Preferably, described stressed member comprises first spring and the link of fixedlying connected with the top of described first spring that vertically is provided with;
The inner bottom surface of described housing is fixed in the bottom of described first spring.
Preferably, described first spring is a stainless steel spring, and described first spring also has the outer protection cover.
Preferably, the test lead of described displacement transducer is fixedlyed connected with described link.
Preferably, described displacement transducer is a fiber grating displacement sensor, and described displacement transducer has temperature compensator.
Preferably, described test lead is identical with material, the structure of described transmission of electricity aerial earth wire, and the length of described test lead is between 1 to 10 meter.
Preferably, described test lead connects firmware by the T type and is connected with the other end of described connecting rod, and the end that described T type connects firmware is connected by the other end of hexagon head bolt with described test lead, described connecting rod respectively.
Preferably, described housing is a rectangular parallelepiped, and the bottom surface of described housing has lever mouth and the outlet of sensor tail optical fiber,
Described connecting rod passes the lever mouth and stretches in the described housing, is connected with described horizon bar.
On-Line Monitor Device of the present utility model can use the measurement mechanism of physical construction that the icing situation of overhead power transmission ground wire is monitored under the situation that guarantees measuring accuracy.Simultaneously, also mild or eliminated the vibration effect of the test lead that wind-force causes, the accuracy of the measurement data of assurance by multiple shock attenuation device is set.On-Line Monitor Device of the present utility model is simple in structure, and is easy to use, and safety coefficient height, long service life, is easy to safeguard.
Description of drawings
Fig. 1 is the structural representation of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model.
Fig. 2 is the structural representation of the balance pivot of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model.
Fig. 3 is the structural representation of the horizontal damping part of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model.
Fig. 4 is the synoptic diagram that the displacement transducer of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model is connected with stressed member.
Fig. 5 is the synoptic diagram that the test lead of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model is connected with connecting rod.
Embodiment
The purpose of this utility model is to provide a kind of transmission of electricity aerial earth wire icing on-Line Monitor Device, and it is simple in structure, and is easy to use, the safety coefficient height, can carry out the circuit of high-voltage operation online, monitor ice covering thickness effectively.
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Fig. 1 is the structural representation of transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model, as shown in Figure 1, transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model, comprise housing 101, with the test lead 102 that be arranged in parallel of transmission of electricity aerial earth wire, be arranged in the housing 101, can produce the stressed member 103 of deformation vertically under pressure, the lever 104 that is connected with stressed member 103 with test lead 102 respectively, with be arranged in the housing 101, be used to detect the displacement transducer 105 of the deformation quantity of stressed member 103.
Wherein, lever 104 comprise horizon bar 141 and with horizon bar 141 connecting rods 142 connected vertically.One end 141a of horizon bar 141 is rotatably mounted to the madial wall of housing 101, the other end 141b of horizon bar 141 and connecting rod 142 one end 142a is vertical is connected the other end 142b of connecting rod 142 and 102 vertical connections of test lead.
The middle part that is between two end 141a and the 141b of horizon bar 141 is connected with the top of stressed member 103, and horizon bar 141 can produce pressure to stressed member 103 under the effect of connecting rod 142, thereby makes stressed member 103 produce deformation.
Because test lead 102 is identical with the structure of transmission of electricity aerial earth wire, and closes on, be arranged in parallel, therefore, the icing situation that produces on the test lead 102 is basic identical with the transmission of electricity aerial earth wire of required detection.Therefore, transmission of electricity aerial earth wire icing on-Line Monitor Device of the present utility model receives icing with test lead 102.
After producing icing on the test lead 102, because the gravity that icing produces acts on the end 141b of horizon bar 141 by connecting rod 142.Horizon bar 141 is the lever construction that an end is fixed in the madial wall of housing 101 rotationally, the gravity that icing produces produces vertically downward acting force at the end of horizon bar 141 141b, and the middle part by horizon bar 141 produces pressure to stressed member 103, thus the deformation quantity that stressed member 103 is produced vertically.
Detect the deformation quantity of stressed member 103 by displacement transducer 105, obtain the stressed of stressed member 103 by the Demodulation Type variable information, thereby can draw the icing gravity that produces at the end of horizon bar 141 141b, and then can calculate situations such as ice covering thickness on the test lead 102, for the power transmission line safe operation provides authentic data.
This on-Line Monitor Device of the present utility model, characteristics by lever construction, to be converted into measurement to the measurement of icing gravity to the displacement of the lever that produces by this gravity, can avoid since factors such as wind-force, wind direction cause to gravimetric interference, improved the accuracy of data, and by mechanical measurement structure realization monitoring, the unsafe factor of having avoided active measuring sensor to cause.
Preferably, an end 141a of horizon bar 141 is rotatably mounted to the madial wall of housing 101 by balance pivot 106.
Fig. 2 is the structural representation of balance pivot 106, as shown in Figure 2, balance pivot 106 comprises two riveting iron 201, is individually fixed in two axle sleeves 202 on two riveting iron 201, the lever collar 203, and the fulcrum central shaft 204 that is arranged in two axle sleeves 202 and the lever collar 203 rotationally.
Wherein, the lever collar 203 is between two axle sleeves 202, and two riveting iron 201 are fixed in the madial wall of housing 101, and the lever collar 203 is connected with an end 141a of horizon bar 141.
Preferably, an end 141a of the lever collar 203 and horizon bar 141 is by being welded to connect.Gap between the lever collar 203 and two axle sleeves 202 is very little, produces moving of horizontal directions to prevent horizon bar 141, thereby displacement is impacted.
For mild and eliminate because the influence that effect caused is caused test lead 102 of wind-force, for example the waving of test lead 102, aeolian vibration etc., on-Line Monitor Device of the present utility model also is provided with damping part.Wind-force can be decomposed into vertical direction and horizontal direction to the influence of test lead 102, and therefore, damping part comprises vertical damping part and horizontal damping part.
As shown in Figure 1, the middle part of horizon bar 141 is connected with the top of stressed member 103 by vertical damping part 107.Preferably, vertically damping part 107 is professional damping spring or professional vibroshock.Preferably, vertically damping part 107 also comprises outer protection cover (not shown), and vertical damping part 107 is subjected to ponding to avoid, invasion and attack such as freeze.
Vertically the oscillating action of test lead 102 in the vertical directions that can be gently produce owing to wind action of damping part 107 is to the influence of stressed member 103.That is, when wind-force made test lead 102 in the vertical directions produce slight vibration, because the vertically effect of damping part 107, stressed member 103 can not produce deformation vertically, thereby has avoided the influence of wind-force to measurement data.
As shown in Figure 1, the other end 141b of horizon bar 141 links to each other with madial wall by horizontal damping part 108.Fig. 3 is the structural representation of horizontal damping part 108, as shown in Figure 3, horizontal damping part comprises that the bottom surface is fixed in the rectangular parallelepiped shell 301 of the madial wall of housing 101, with two horizontal baffles 303 and two vertical baffles 304 of being connected with the madial wall of rectangular parallelepiped shell 301 by damping spring 302 respectively.
Do not contact between two horizontal baffles 303 and two vertical baffles 304.
The other end 141b of horizon bar 141 stretches in the rectangular parallelepiped shell 301 from the end face of rectangular parallelepiped shell 301, and the other end 141b of horizon bar 141 is between two horizontal baffles 303 and two vertical baffles 304.
Wherein, the gap between the other end 141b of two vertical baffles 304 and horizon bar 141 is zero, test lead 102 swing in the horizontal direction that causes owing to wind action with restriction.Spacing between two horizontal baffles 303 is for guaranteeing that displacement transducer 105 can be operated within the work range, causes displacement transducer 105 damages to avoid because the in the vertical direction vibration is excessive.
Preferably, damping spring 302 is professional damping spring or professional vibroshock.
As shown in Figure 1, stressed member 103 comprises first spring 131 and the link 132 of fixedlying connected with the top of first spring 131 that vertically is provided with.The inner bottom surface of housing 101 is fixed in the bottom of first spring 131.Preferably, first spring 131 is a stainless steel spring, and first spring 131 also has outer protection cover (not shown), and first spring 131 is subjected to ponding to avoid, invasion and attack such as freeze.
Preferably, link 132 is a mounting flange.Fig. 4 is the synoptic diagram that displacement transducer is connected with stressed member.As shown in Figure 4, the test lead of displacement transducer 105 is connected with stressed member 103 by link 132.Wherein, can be fixing between the test lead of displacement transducer 105 and the link 132 by hexagon head bolt 401.
Preferably, the employed displacement transducer 105 of on-Line Monitor Device of the present utility model is a fiber grating displacement sensor, and this displacement transducer also has temperature compensator in addition, to eliminate the influence of ambient temperature to the measuring accuracy of displacement transducer.
Preferably, as shown in Figure 5, test lead 102 connects firmware 501 by the T type and is connected with the other end 142b of connecting rod 142, and the end that the T type connects firmware 501 is connected with the other end 142b of test lead 102 and connecting rod 142 by hexagon head bolt 502 respectively.
Preferably, as shown in Figure 1, housing 101 is a rectangular parallelepiped, and the bottom surface of housing 101 has lever mouth 109 and sensor tail optical fiber outlet 110.Wherein, lever mouth 109 is a rectangle, and sensor tail optical fiber outlet 110 is circular.
Wherein, connecting rod 142 passes lever mouth 109 and stretches in the housing 101, is connected with horizon bar 141.
Preferably, anti-polywater lengthened plate 111 is arranged around the bottom surface of housing 101, stop up to prevent that the outlet 110 of lever mouth 109 and sensor tail optical fiber from being frozen by ponding.
For improving precision sensitivity, can add lubricant to positions such as the vertical baffle 304 of balance pivot 106, horizontal shock attenuation device 108, horizontal baffle 303, damping springs 302, lever 104, the T type that is exposed at beyond the housing 101 connected firmware 501, and housing 101 outsides are coated with and are covered with anti-icing paint.
On-Line Monitor Device of the present utility model can use the measurement mechanism of physical construction that the icing situation of overhead power transmission ground wire is monitored under the situation that guarantees measuring accuracy.Simultaneously, also mild or eliminated the vibration effect of the test lead that wind-force causes, the accuracy of the measurement data of assurance by multiple shock attenuation device is set.On-Line Monitor Device of the present utility model is simple in structure, and is easy to use, and safety coefficient height, long service life, is easy to safeguard.
The above, it is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, to any simple modification, equivalent variations and modification that above embodiment did, all still belong to the scope of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (15)
1. a transmission of electricity aerial earth wire icing on-Line Monitor Device is characterized in that, comprising:
Housing;
With the test lead that be arranged in parallel of transmission of electricity aerial earth wire;
Be arranged in the described housing, can produce the stressed member of deformation vertically under pressure;
The lever that is connected with stressed member with described test lead respectively, described lever comprises horizon bar and the connecting rod that vertically is connected with horizon bar; With
Be arranged in the described housing, detect the displacement transducer of the deformation quantity of described stressed member;
Wherein, an end of described horizon bar is rotatably mounted to the madial wall of described housing, and vertical connection of an end of the other end of described horizon bar and described connecting rod, the other end of described connecting rod is connected with described test lead is vertical;
The middle part of described horizon bar is connected with the top of stressed member, and described horizon bar can produce pressure to described stressed member under the effect of connecting rod.
2. on-Line Monitor Device according to claim 1 is characterized in that, an end of described horizon bar is rotatably mounted to the madial wall of described housing by balance pivot;
Described balance pivot comprises two riveting iron, is individually fixed in two axle sleeves on two riveting iron, the lever collar, and the fulcrum central shaft that is arranged in described two axle sleeves and the lever collar rotationally;
Wherein, the described lever collar is between two axle sleeves, and described two riveting ferropexies are in the madial wall of described housing, and the described lever collar is connected with an end of described horizon bar.
3. on-Line Monitor Device according to claim 2 is characterized in that, the middle part of described horizon bar is connected with the top of stressed member by vertical damping part.
4. on-Line Monitor Device according to claim 3 is characterized in that, described vertical damping part is damping spring or vibroshock.
5. on-Line Monitor Device according to claim 4 is characterized in that, described vertical damping part comprises the outer protection cover.
6. on-Line Monitor Device according to claim 2 is characterized in that, the other end of described horizon bar links to each other with madial wall by horizontal damping part,
Described horizontal damping part comprises that the bottom surface is fixed in the rectangular parallelepiped shell of the madial wall of described housing, with two horizontal baffles and two vertical baffles of being connected with the madial wall of described rectangular parallelepiped shell by damping spring respectively;
Do not contact between described two horizontal baffles and described two vertical baffles;
The other end of described horizon bar stretches in the described rectangular parallelepiped shell from the end face of described rectangular parallelepiped shell, and the other end of described horizon bar is between described two horizontal baffles and two vertical baffles.
7. on-Line Monitor Device according to claim 6 is characterized in that, the gap between the other end of described two vertical baffles and described horizon bar is zero, and the spacing between described two horizontal baffles is the work range of described displacement transducer.
8. on-Line Monitor Device according to claim 6 is characterized in that, described damping spring is damping spring or vibroshock.
9. according to claim 3 or 6 described on-Line Monitor Device, it is characterized in that described stressed member comprises first spring and the link of fixedlying connected with the top of described first spring that vertically is provided with;
The inner bottom surface of described housing is fixed in the bottom of described first spring.
10. on-Line Monitor Device according to claim 9 is characterized in that, described first spring is a stainless steel spring, and described first spring also has the outer protection cover.
11. on-Line Monitor Device according to claim 9 is characterized in that, the test lead of described displacement transducer is fixedlyed connected with described link.
12. on-Line Monitor Device according to claim 11 is characterized in that, described displacement transducer is a fiber grating displacement sensor, and described displacement transducer has temperature compensator.
13., it is characterized in that described test lead is identical with material, the structure of described transmission of electricity aerial earth wire according to claim 3 or 6 described on-Line Monitor Device, the length of described test lead is between 1 to 10 meter.
14. according to claim 3 or 6 described on-Line Monitor Device, it is characterized in that, described test lead connects firmware by the T type and is connected with the other end of described connecting rod, and the end that described T type connects firmware is connected by the other end of hexagon head bolt with described test lead, described connecting rod respectively.
15., it is characterized in that described housing is a rectangular parallelepiped according to claim 3 or 6 described on-Line Monitor Device, the bottom surface of described housing has lever mouth and the outlet of sensor tail optical fiber,
Described connecting rod passes the lever mouth and stretches in the described housing, is connected with described horizon bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203519749U CN201653621U (en) | 2009-12-30 | 2009-12-30 | Power transmission overhead ground wire ice coverage online monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203519749U CN201653621U (en) | 2009-12-30 | 2009-12-30 | Power transmission overhead ground wire ice coverage online monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653621U true CN201653621U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203519749U Expired - Lifetime CN201653621U (en) | 2009-12-30 | 2009-12-30 | Power transmission overhead ground wire ice coverage online monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653621U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591265A (en) * | 2011-01-17 | 2012-07-18 | 陕西省建筑科学研究院 | Steel structure performance measurement and control circuit system based on piezoelectric principal element rod piece |
| CN103900529A (en) * | 2014-03-03 | 2014-07-02 | 国网江西省电力公司信息通信分公司 | Power transmission line inclined angle measurement device and method based on fiber bragg grating sensing technology |
| CN104215518A (en) * | 2014-09-22 | 2014-12-17 | 贵阳供电局 | Power line gravity character monitoring device |
| CN104568231A (en) * | 2014-12-20 | 2015-04-29 | 张萍 | System for monitoring and positioning pressed grid electric transmission line |
| CN107388416A (en) * | 2017-07-14 | 2017-11-24 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and control method thereof |
| CN109883948A (en) * | 2019-03-12 | 2019-06-14 | 东北农业大学 | Material surface and sleet layer adhesion strength torsional shear force measuring device |
| CN110686608A (en) * | 2019-11-11 | 2020-01-14 | 国网湖南省电力有限公司 | Portable icing thickness measuring device for power transmission line and measuring method thereof |
| CN111521120A (en) * | 2020-04-27 | 2020-08-11 | 贵州电网有限责任公司 | Thickness measurement grating protection device of power transmission line deicing robot |
-
2009
- 2009-12-30 CN CN2009203519749U patent/CN201653621U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591265A (en) * | 2011-01-17 | 2012-07-18 | 陕西省建筑科学研究院 | Steel structure performance measurement and control circuit system based on piezoelectric principal element rod piece |
| CN102591265B (en) * | 2011-01-17 | 2015-10-21 | 陕西省建筑科学研究院 | Based on the steel structure performance telemetry circuit system of piezoelectricity pivot bar |
| CN103900529A (en) * | 2014-03-03 | 2014-07-02 | 国网江西省电力公司信息通信分公司 | Power transmission line inclined angle measurement device and method based on fiber bragg grating sensing technology |
| CN104215518A (en) * | 2014-09-22 | 2014-12-17 | 贵阳供电局 | Power line gravity character monitoring device |
| CN104215518B (en) * | 2014-09-22 | 2016-08-24 | 贵阳供电局 | Power circuit gravity characteristic monitoring device |
| CN104568231A (en) * | 2014-12-20 | 2015-04-29 | 张萍 | System for monitoring and positioning pressed grid electric transmission line |
| CN107388416A (en) * | 2017-07-14 | 2017-11-24 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and control method thereof |
| CN109883948A (en) * | 2019-03-12 | 2019-06-14 | 东北农业大学 | Material surface and sleet layer adhesion strength torsional shear force measuring device |
| CN110686608A (en) * | 2019-11-11 | 2020-01-14 | 国网湖南省电力有限公司 | Portable icing thickness measuring device for power transmission line and measuring method thereof |
| CN111521120A (en) * | 2020-04-27 | 2020-08-11 | 贵州电网有限责任公司 | Thickness measurement grating protection device of power transmission line deicing robot |
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