CN111707315A - State monitoring system and monitoring device for strain insulator string of power transmission line - Google Patents
State monitoring system and monitoring device for strain insulator string of power transmission line Download PDFInfo
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- CN111707315A CN111707315A CN202010712041.9A CN202010712041A CN111707315A CN 111707315 A CN111707315 A CN 111707315A CN 202010712041 A CN202010712041 A CN 202010712041A CN 111707315 A CN111707315 A CN 111707315A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a system and a device for monitoring the state of a strain insulator string of a power transmission line, and the system and the device comprise the strain insulator string, a state monitoring device, a wireless receiving gateway, a background server and a display terminal, wherein intelligent force measurement connecting hardware fittings are respectively arranged on two sides of the strain insulator string, the two intelligent force measurement connecting hardware fittings are respectively connected with an iron tower and an intelligent force measurement strain clamp, an inclination angle sensor is arranged on each intelligent force measurement connecting hardware fitting, a detection state parameter is sent to the wireless receiving gateway, the wireless receiving gateway transmits data to the background server, the background server performs comprehensive calculation on tension, temperature and inclination angle data, analyzes the running state of the strain insulator string, transmits the running state to the display terminal, and displays abnormal alarm information. According to the monitoring system and the monitoring device thereof, the tension monitoring device, the inclination monitoring device and the temperature monitoring device are arranged at the key position of the strain clamp insulator string, so that all-weather multi-parameter state monitoring of the operation state of the strain clamp insulator string can be realized.
Description
Technical Field
The invention relates to monitoring of the running state of a strain insulator string in a power transmission line, in particular to monitoring of the stress state of the strain insulator string of a high-voltage transmission overhead line and the heating condition of an overcurrent position, and belongs to the field of on-line monitoring of power equipment.
Background
The overhead transmission line is an important component of a power grid system in China, and the running state of the overhead transmission line is directly related to the production and life of people. The strain insulator string is a product combining an insulator and a hardware fitting, is positioned between an iron tower of a power transmission line and a lead, and plays roles of drawing the lead, electrically insulating the high-voltage position and the iron tower and the like. According to the statistics of the operation and inspection department, accidents such as insulator string falling, strain clamp breakage, strain clamp compression connection lead wire disconnection and the like occur. The reason for this is that firstly, the product may have quality defects or the installation is not standard, secondly, the strain insulator string of the power transmission line is in a stressed state for a long time, and especially in some areas with large wind power or serious ice coating all the year round, the strain insulator string is influenced by factors such as wire tension, wind load, ice coating weight, breeze vibration and the like, and the service life is greatly shortened. Due to the lack of regularity of the above influencing factors, it is difficult to form a quantitative standard to determine the time for repairing or replacing parts, which has been a problem that is difficult to solve by the operation and inspection department. The traditional method for judging the state of the insulator string mainly adopts modes of manual observation or unmanned aerial vehicle routing inspection and the like, is not only influenced by weather, but also poor in timeliness, and cannot find problems and eliminate potential safety hazards in time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an overhead transmission line strain insulator string running state monitoring system and a monitoring device thereof.
In order to achieve the above purpose, the invention provides a system for monitoring the state of a strain insulator string of a power transmission line, which comprises the strain insulator string, a state monitoring device, a wireless receiving gateway, a background server and a display terminal, wherein the state monitoring device comprises an intelligent temperature measurement strain clamp, an intelligent force measurement connecting fitting and an inclination angle sensor, the intelligent force measurement connecting fitting is respectively arranged at two sides of the strain insulator string, the two intelligent force measurement connecting fittings are respectively connected with an iron tower and the intelligent force measurement strain clamp, the inclination angle sensor is arranged on each intelligent force measurement connecting fitting, the intelligent temperature measurement strain clamp, the intelligent force measurement connecting fitting and the inclination angle sensor transmit state parameters to the wireless receiving gateway, the wireless receiving gateway transmits the data to the background server, the background server performs comprehensive calculation on tension force, temperature and inclination angle data, and analyzes the running state of the strain, and displaying the abnormal alarm information on a display terminal of the operation and inspection department in a chart form in real time.
The wireless receiving gateway is installed in an electric cabinet in the middle of a vertical rod below an iron tower, a photovoltaic energy storage system consisting of a solar photovoltaic panel at the top of the vertical rod and an energy storage battery in the electric cabinet is used for supplying power, the temperature, the tension and the inclination angle data of the intelligent temperature measurement strain clamp, the intelligent force measurement connecting fitting and the inclination angle sensor of the acquisition terminal are received through a 2.4G gateway module, and the data are sent to a background server through a 4G module.
The background server receives tension and angle data of the strain insulator string, and if no wind or breeze exists, the tension value on one side of the strain insulator string
The angle between the force direction and the horizontal plane is
The value of the tension on the other side
The angle between the force direction and the horizontal plane is
And the whole gravity of the strain insulator string is G, and the following static equation can be obtained:
the equation is programmed into background control software, the change of the gravity G of the strain insulator string can be displayed in real time, the icing thickness of the strain insulator string can be estimated according to the gravity increment G in the icing season, when the gravity G value is reduced, one or more insulators are possibly damaged or fall, the threshold value for increasing and reducing the gravity G is set, and when the threshold value is triggered, alarm information is timely pushed to a transportation and inspection department.
The state monitoring device for the strain insulator string of the power transmission line comprises an intelligent temperature measurement strain clamp, an intelligent force measurement connecting hardware fitting and an inclination angle sensor, wherein the intelligent temperature measurement strain clamp comprises a strain clamp body, a strain clamp drainage plate, a jumper drainage plate and a temperature measurement sensor, one end of the strain clamp drainage plate is connected with the strain clamp body, the other end of the strain clamp drainage plate is connected with the jumper drainage plate, the temperature measurement sensor is installed on the outer side of the jumper drainage plate, the temperature of the lap joint of the strain clamp drainage plate and the jumper drainage plate is collected in real time during operation, and temperature measurement data are transmitted to a wireless receiving gateway through a 2.4G wireless transmission module in; intelligence dynamometry link fitting, including force sensor body, lithium cell module, battery apron, PCB board, omnidirectional emission antenna, insulating cover plate, the force sensor body for icing detection sensor, the upper and lower both sides set up the square hole respectively, lithium cell module is placed to the side square hole of going up, reuse battery apron is sealed, the PCB board is placed to the side square hole of going down, the insulating cover plate of epoxy preparation pours omnidirectional emission antenna's tip part wherein, omnidirectional emission antenna's tail end and PCB board are pegged graft fixedly, set up wireless transmission module on the PCB board, insulating cover plate fixes on force sensor body, there is the aperture to link up both sides square hole about force sensor body is inside, the wire passes through the aperture and realizes force sensor body, the electrical connection of lithium cell module and PCB board.
The tilt sensor is a wireless double-shaft sensor.
The temperature measurement sensor is a passive wireless sensor, energy is taken from an electric field generated by high-voltage electricity of circuit operation, the temperature measurement range is-40-150 ℃, the transmissible distance is not less than 50 m, the temperature measurement sensor comprises a temperature measurement base and a temperature measurement sensor body, the temperature measurement base is fixedly connected with the jumper wire drainage plate, and the temperature measurement sensor body is fixedly connected with the temperature measurement base.
Compared with the prior art, the invention has the beneficial effects that: according to the monitoring system and the monitoring device for the operating state of the strain insulator string of the overhead line, the tension, inclination and temperature monitoring devices are arranged at the key positions of the strain insulator string, so that all-weather multi-parameter state monitoring of the operating state of the strain insulator string can be realized. The electric elements are arranged in the temperature measuring sensor body and comprise 2.4G wireless transmission modules, and the difficulty of the installation of the acquisition terminal and the data transmission is reduced due to the application of a 2.4G wireless transmission mode; the integrated design of the sensor and the hardware fitting reduces the workload of the installation personnel for high-altitude operation; the passive electricity taking technology of the temperature measuring equipment effectively saves energy; the intelligent analysis and the accurate fault location of the background software greatly reduce the workload of the operation and inspection personnel, reduce the time for discovering hidden dangers, provide data reference for the line inspection defect eliminating work, and can obviously improve the operation and maintenance work efficiency and benefit of the power transmission line.
Drawings
FIG. 1 is a block diagram of an overhead line strain insulator string condition monitoring system of the present invention;
FIG. 2 is a structural diagram of an intelligent temperature measuring strain clamp of the present invention;
FIG. 3 is a schematic view of a temperature sensor according to the present invention;
FIG. 4 is a structural diagram of an intelligent force measurement fitting of the present invention;
FIG. 5 is a stress analysis diagram of the strain insulator string according to the present invention.
The intelligent temperature measurement system comprises a steel tower 1, a tension insulator string 2, an intelligent temperature measurement tension clamp 3, a tension clamp body 301, a tension clamp drainage plate 302, a jumper drainage plate 303, a temperature measurement sensor 304, a temperature measurement sensor 3041, a temperature measurement base 3042, an intelligent force measurement connection hardware fitting 4, a tension sensor body 401, a lithium battery module 402, a battery cover plate 403, a PCB (printed circuit board) 404, an omnidirectional transmitting antenna 405, an insulating cover plate 406, an inclination angle sensor 5, a wireless receiving gateway 6, a background server 7, a display terminal 8, an energy storage battery 9, an electrical cabinet 10 and a solar photovoltaic panel 11.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in the figure, the state monitoring system of the strain insulator string of the power transmission line comprises a strain insulator string 2, a state monitoring device, a wireless receiving gateway 6, a background server 7 and a display terminal 8, wherein the state monitoring device comprises an intelligent temperature measurement strain clamp 3, an intelligent force measurement connecting fitting 4 and an inclination angle sensor 5, the intelligent force measurement connecting fittings 4 are respectively arranged at two sides of the strain insulator string 2, the two intelligent force measurement connecting fittings 4 are respectively connected with an iron tower 1 and the intelligent force measurement strain clamp 3, the inclination angle sensor 5 is arranged on each intelligent force measurement connecting fitting 4, the intelligent temperature measurement strain clamp 3, the intelligent force measurement connecting fitting 4 and the inclination angle sensor 5 transmit state parameters to the wireless receiving gateway 6, the wireless receiving gateway 6 transmits data to the background server 7, and the background server 7 performs comprehensive calculation on tension, temperature and inclination angle data, and analyzing the running state of the strain insulator string 2, displaying the running state on a display terminal 8 of an operation and inspection department in a chart form, and displaying abnormal alarm information in real time.
The wireless receiving gateway 6 is installed in an electrical cabinet 10 in the middle of a vertical rod below an iron tower 1, a photovoltaic energy storage system consisting of a solar photovoltaic panel 11 at the top of the vertical rod and an energy storage battery 9 inside the electrical cabinet 10 supplies power, the temperature, the tension and the inclination angle data of the intelligent temperature measurement strain clamp 3, the intelligent force measurement connecting hardware fitting 4 and the inclination angle sensor 5 of the acquisition terminal are received through a 2.4G gateway module, and then the data are sent to a background server 7 through a 4G module.
As shown in fig. 5, the background server 7 receives the tension and angle data of the strain insulator string 2, and if no wind or breeze exists, the tension value at one side of the strain insulator string 2 is assumed
The angle between the force direction and the horizontal plane is
The value of the tension on the other side
The angle between the force direction and the horizontal plane is
And the whole gravity of the strain insulator string 2 is G, and the following static equation can be obtained:
the equation is compiled into background control software, the change of the gravity G of the strain insulator string 2 can be displayed in real time, and the ice coating thickness of the strain insulator string 2 can be estimated according to the gravity increment G in the ice coating season. When the gravity G value decreases, one or more insulators may be damaged or fall off. And setting the increasing and decreasing threshold values of the gravity G, and pushing alarm information to the operation and inspection department in time when the threshold values are triggered.
The state monitoring device for the strain insulator string of the power transmission line comprises an intelligent temperature measurement strain clamp 3, an intelligent force measurement connecting hardware fitting 4 and an inclination angle sensor 5, wherein the intelligent temperature measurement strain clamp 3 comprises a strain clamp body 301, a strain clamp drainage plate 302, a jumper drainage plate 303 and a temperature measurement sensor 304, one end of the strain clamp drainage plate 302 is connected with the strain clamp body 301, the other end of the strain clamp drainage plate 302 is connected with the jumper drainage plate 303, the temperature measurement sensor 304 is installed on the outer side of the jumper drainage plate 303, the temperature of the lap joint of the strain clamp drainage plate 302 and the jumper drainage plate 303 is collected in real time during operation, and temperature measurement data are transmitted to a wireless receiving gateway 6 through a 2.4G wireless transmission module in; the intelligent force-measuring connecting hardware fitting 4 comprises a tension sensor body 401, a lithium battery module 402, a battery cover plate 403, a PCB 404, an omnidirectional transmitting antenna 405 and an insulating cover plate 406, wherein the tension sensor body 401 is an ice-covering detection sensor, square holes are respectively formed in the upper side and the lower side of the tension sensor body 401, the lithium battery module 402 is placed in the upper side square hole, the upper side square hole is sealed by the battery cover plate 403, the PCB is placed in the lower side square hole, a tip end part of the omnidirectional transmitting antenna 405 is poured into the insulating cover plate 406 made of epoxy resin, the tail end of the omnidirectional transmitting antenna 405 is fixedly connected with the PCB 404 in an inserting mode, a wireless transmission module is arranged on the PCB 404, the insulating cover plate 406 is fixed on the tension sensor body 401, small holes penetrating through the upper side square hole and the lower side square hole are formed in the tension sensor body 401.
The tilt sensor is a 5-wireless double-shaft sensor.
The temperature sensor 304 is a passive wireless sensor, energy is taken from an electric field generated by high-voltage electricity of line operation, the temperature measuring range is-40-150 ℃, the transmissible distance is not less than 50 m, the temperature sensor 304 comprises a temperature measuring base 3042 and a temperature measuring sensor body 3041, the temperature measuring base 3042 is fixedly connected with the jumper wire drainage plate 303, and the temperature measuring sensor body 3041 is fixedly connected with the temperature measuring base 3042.
As shown in figure 3, the temperature measurement sensor is a passive wireless sensor, energy is obtained from an electric field generated by high voltage electricity (more than or equal to 35 kV) in line operation, the temperature measurement range is-40-150 ℃, the temperature measurement precision is high, the service life is long, and the transmissible distance reaches 50 meters. The temperature sensor is divided into a temperature measuring base and a temperature measuring sensor body, the temperature measuring base is made of red copper materials and fixed with the jumper drainage plate in a brazing mode, various electrical elements are arranged inside the temperature measuring sensor body, induction energy taking, data acquisition and data transmission work are completed, and the temperature measuring sensor is connected with the temperature measuring base in an adhesive mode.
As shown in fig. 4, the intelligent force-measuring link fitting comprises a tension sensor body, a lithium battery module, a battery cover plate, a PCB, an omnidirectional transmitting antenna, and an insulating cover plate. The tension sensor body is an icing detection sensor, is processed by stainless steel materials, and is provided with square holes at the upper side and the lower side. Wherein, the lithium cell module is placed to the side square hole of going up, and the battery cover board of reuse stainless steel preparation is sealed, and the PCB board is placed to the side square hole of downside, and the insulating cover board of epoxy preparation pours omnidirectional emission antenna's tip part wherein, and omnidirectional emission antenna's tail end and PCB board are pegged graft fixedly, reuse the screw to fix insulating cover board on the force sensor body. The tension sensor body is internally provided with a small hole which is communicated with square holes at the upper side and the lower side, and the wire is used for realizing the electrical connection of the tension sensor body, the lithium battery module and the PCB through the small hole.
When the two sides of the intelligent force-measuring connecting fitting generate tension, voltage signals are generated inside the tension sensor body, the voltage signals are converted into tension data through the PCB, and the tension data are transmitted to the wireless receiving gateway through the 2.4G wireless transmission module and the omnidirectional transmitting antenna on the PCB.
And the background server receives various monitoring parameters transmitted by the wireless receiving gateway, analyzes and processes the monitoring parameters to form a chart and alarm information, and pushes the chart and the alarm information to display terminal equipment of a transportation and inspection department.
The intelligent temperature measurement strain clamp, the intelligent force measurement connecting hardware fitting and the inclination angle sensor are provided with unique equipment numbers, and the equipment numbers correspond to the position information of the installed strain insulator string in advance in a background server. Before the system runs, an intelligent temperature measurement strain clamp is set to be a temperature alarm threshold value, an intelligent force measurement connecting fitting is set to be a tension alarm threshold value, a background server receives data transmitted by a wireless receiving gateway and automatically performs analysis processing to form a chart to be pushed to a display terminal of a transportation and inspection department, once the measured data exceeds the alarm threshold value, the background server can generate alarm information to be pushed to the display terminal, the position of an insulator string is traced back through the equipment number, and the transportation and inspection department is guided to carry out maintenance work on the strain insulator string.
As shown in fig. 1, the tilt sensor is a wireless dual-axis sensor, is mounted on the intelligent force-measuring link fitting, and detects the angular directions of the tensile forces on the two sides of the strain insulator string through the position change of the intelligent force-measuring link fitting.
According to the monitoring system and the monitoring device for the operating state of the strain insulator string of the overhead line, the tension, the inclination angle and the temperature monitoring device are arranged at the key position of the strain insulator string, so that all-weather and multi-angle state monitoring of the operating state of the strain insulator string can be realized. The application of the 2.4G wireless transmission mode reduces the difficulty of system installation and data acquisition; the integrated design of the sensor and the hardware fitting reduces the workload of the installation personnel for high-altitude operation; the passive electricity taking technology of the temperature measuring equipment effectively saves energy; the intelligent analysis and the accurate fault location of the background software greatly reduce the workload of the operation and inspection personnel, reduce the time for discovering hidden dangers, provide data reference for the line inspection defect eliminating work, and can obviously improve the operation and maintenance work efficiency and benefit of the power transmission line.
The operation and main features of the present invention have been described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and various modifications or changes without inventive step are within the scope of the present invention.
The system arranges the state monitoring device at the key position of the strain insulator string, and sends the state parameters to the wireless receiving gateway, and the wireless receiving gateway transmits the data to the background server. And the background server performs comprehensive calculation on the tension, temperature and inclination angle data, analyzes the running state of the strain insulator string, displays the running state on a display terminal of an operation and inspection department in a chart form, and displays abnormal alarm information in real time. According to the strain insulator string defect identification method, the tension, temperature and inclination parameters of the strain insulator string are collected and intelligently analyzed, so that hidden dangers are found in time, the position of a defect is accurately positioned, the workload of a transport and inspection worker is reduced, and the defect identification efficiency of the strain insulator string is improved to the maximum extent.
Claims (6)
1. Transmission line strain insulator string state monitoring system, its characterized in that: comprises a strain insulator string, a state monitoring device, a wireless receiving gateway, a background server and a display terminal, wherein the state monitoring device comprises an intelligent temperature measurement strain clamp, an intelligent force measurement connecting fitting and an inclination angle sensor, the two sides of the strain insulator string are respectively provided with the intelligent force measurement connecting fitting, the two intelligent force measurement connecting fittings are respectively connected with the iron tower and the intelligent force measurement strain clamp, an inclination angle sensor is arranged on each intelligent force measurement connecting hardware fitting, the intelligent temperature measurement strain clamp, the intelligent force measurement connecting hardware fitting and the inclination angle sensor transmit state parameters to a wireless receiving gateway, the wireless receiving gateway transmits data to a background server, the background server performs comprehensive calculation on tension, temperature and inclination angle data, analyzes the running state of the strain insulator string, and displaying the abnormal alarm information on a display terminal of the operation and inspection department in a chart form in real time.
2. The transmission line strain insulator string state monitoring system of claim 1, characterized in that: the wireless receiving gateway is installed in an electric cabinet in the middle of a vertical rod below an iron tower, a photovoltaic energy storage system consisting of a solar photovoltaic panel at the top of the vertical rod and an energy storage battery in the electric cabinet is used for supplying power, the temperature, the tension and the inclination angle data of the intelligent temperature measurement strain clamp, the intelligent force measurement connecting fitting and the inclination angle sensor of the acquisition terminal are received through a 2.4G gateway module, and the data are sent to a background server through a 4G module.
3. The transmission line strain insulator string state monitoring system of claim 1 or 2, characterized in that: the background server receives tension and angle data of the strain insulator string, and if no wind or breeze exists, the tension value on one side of the strain insulator string
The angle between the force direction and the horizontal plane is
The value of the tension on the other side
The angle between the force direction and the horizontal plane is
And the whole gravity of the strain insulator string is G, and the following static equation can be obtained:
the equation is programmed into background control software, the change of the gravity G of the strain insulator string can be displayed in real time, the icing thickness of the strain insulator string can be estimated according to the gravity increment G in the icing season, when the gravity G value is reduced, one or more insulators are possibly damaged or fall, the threshold value for increasing and reducing the gravity G is set, and when the threshold value is triggered, alarm information is timely pushed to a transportation and inspection department.
4. The device for monitoring the state of the strain insulator string of the power transmission line according to claim 3, characterized in that: the intelligent temperature measurement strain clamp comprises an intelligent temperature measurement strain clamp body, an intelligent force measurement connecting hardware fitting and an inclination angle sensor, wherein the intelligent temperature measurement strain clamp comprises a strain clamp body, a strain clamp drainage plate, a jumper drainage plate and a temperature measurement sensor, one end of the strain clamp drainage plate is connected with the strain clamp body, the other end of the strain clamp drainage plate is connected with the jumper drainage plate, the temperature measurement sensor is installed on the outer side of the jumper drainage plate, the temperature of the lap joint of the strain clamp drainage plate and the jumper drainage plate is collected in real time during operation, and temperature measurement data are transmitted to a wireless receiving gateway through a 2.4G wireless transmission module; intelligence dynamometry link fitting, including force sensor body, lithium cell module, battery apron, PCB board, omnidirectional emission antenna, insulating cover plate, the force sensor body for icing detection sensor, the upper and lower both sides set up the square hole respectively, lithium cell module is placed to the side square hole of going up, reuse battery apron is sealed, the PCB board is placed to the side square hole of going down, the insulating cover plate of epoxy preparation pours omnidirectional emission antenna's tip part wherein, omnidirectional emission antenna's tail end and PCB board are pegged graft fixedly, set up wireless transmission module on the PCB board, insulating cover plate fixes on force sensor body, there is the aperture to link up both sides square hole about force sensor body is inside, the wire passes through the aperture and realizes force sensor body, the electrical connection of lithium cell module and PCB board.
5. The device for monitoring the state of the strain insulator string of the power transmission line according to claim 4, characterized in that: the tilt sensor is a wireless double-shaft sensor.
6. The device for monitoring the state of the strain insulator string of the power transmission line according to claim 5, characterized in that: the temperature measurement sensor is a passive wireless sensor, energy is taken from an electric field generated by high-voltage electricity of circuit operation, the temperature measurement range is-40-150 ℃, the transmissible distance is not less than 50 m, the temperature measurement sensor comprises a temperature measurement base and a temperature measurement sensor body, the temperature measurement base is fixedly connected with the jumper wire drainage plate, and the temperature measurement sensor body is fixedly connected with the temperature measurement base.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712041.9A CN111707315A (en) | 2020-07-22 | 2020-07-22 | State monitoring system and monitoring device for strain insulator string of power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010712041.9A CN111707315A (en) | 2020-07-22 | 2020-07-22 | State monitoring system and monitoring device for strain insulator string of power transmission line |
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| CN202010712041.9A Pending CN111707315A (en) | 2020-07-22 | 2020-07-22 | State monitoring system and monitoring device for strain insulator string of power transmission line |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393712A (en) * | 2020-11-16 | 2021-02-23 | 云南电网有限责任公司昆明供电局 | Power transmission line insulator string inclination monitoring system and method based on satellite positioning |
| CN114128952A (en) * | 2021-08-14 | 2022-03-04 | 三峡大学 | Special safety helmet for power transmission tower constructors |
| CN114739558A (en) * | 2022-04-07 | 2022-07-12 | 浙江泰仑电力集团有限责任公司 | ADSS optical cable tension on-line monitoring system |
| CN115207856A (en) * | 2022-08-01 | 2022-10-18 | 福州德寰流体技术有限公司 | Overhead line on-line real-time monitoring, early warning and disconnection protection device |
| CN118074044A (en) * | 2024-04-12 | 2024-05-24 | 国网山西省电力公司晋城供电公司 | Strain clamp assembly |
-
2020
- 2020-07-22 CN CN202010712041.9A patent/CN111707315A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112393712A (en) * | 2020-11-16 | 2021-02-23 | 云南电网有限责任公司昆明供电局 | Power transmission line insulator string inclination monitoring system and method based on satellite positioning |
| CN114128952A (en) * | 2021-08-14 | 2022-03-04 | 三峡大学 | Special safety helmet for power transmission tower constructors |
| CN114739558A (en) * | 2022-04-07 | 2022-07-12 | 浙江泰仑电力集团有限责任公司 | ADSS optical cable tension on-line monitoring system |
| CN115207856A (en) * | 2022-08-01 | 2022-10-18 | 福州德寰流体技术有限公司 | Overhead line on-line real-time monitoring, early warning and disconnection protection device |
| CN115207856B (en) * | 2022-08-01 | 2023-03-10 | 福州德寰流体技术有限公司 | Overhead line on-line real-time monitoring, early warning and disconnection protection device |
| CN118074044A (en) * | 2024-04-12 | 2024-05-24 | 国网山西省电力公司晋城供电公司 | Strain clamp assembly |
| CN118074044B (en) * | 2024-04-12 | 2024-06-14 | 国网山西省电力公司晋城供电公司 | Strain clamp assembly |
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