1248 results about "Transmission tower" patented technology

According to the invention, a body photo, obtained by routing inspection by an unmanned aerial vehicle, of a transmission tower is analyzed automatically by using a deep learning technology. On the basis of a Faster-Rcnn algorithm, power transmission equipment needing detection is identified from the photo obtained by routing inspection by the unmanned aerial vehicle; the power transmission equipment is sent to a defect classifier for the equipment to determine whether the equipment has a defect and which type the defect is; if the equipment has a defect, the location of the defect equipment as well as the defect type is marked in the photo automatically; and then a defect report is generated finally and maintenance information is provided for the maintenance staff. According to the invention, the analysis process has advantages of high accuracy, fast processing speed and high reliability; and the automatic analysis of the inspection photo of the transmission line is realized without manual participation.

Disclosed is a power transmission tower, which includes a tower body; first through sixth main insulation arms connected by one end thereof to the tower body with an angle with the tower body, respectively, and arranged radially and symmetrically about the tower body in a longitudinal direction; and first through eighth auxiliary insulation arms for selectively connecting the other end of the first through sixth main insulation arms and the tower body so that each of the auxiliary insulation arms constitutes each side of an octagon.Since the insulation arms are octagonally arranged, it is possible to reinforce a mechanical strength and enhance electric properties of the tower.

FIG. 1 is a perspective view of transmission tower 10, phase conductors 12, insulators 14, and shield wires 16. They are to be inspected by unmanned aerial vehicle UAV 20 with embedded processor and memory 22, radio 24, location rover 26, and camera 28. Base station 30 has processor and memory 32, radio 34, and location base 36. The relative location between UAV 20 and base station 30 can be accurately calculated by location base 36 and location rover 26 communicating over radios 24 and 34. Camera 28 on UAV 20 is first used to capture two or more orientation images 38 and 39 of tower 10; lines 12 and 16; and insulators 14 from different vantage points. Terrestrial or close-range photogrammetry techniques are used create a three dimensional model of tower 10; lines 12 and 16; and insulators 14. Based on inspection resolution and safety objectives, a standoff distance 50 is determined. Then a flight path with segments for ascent 40, one or more loops 42, 44, 46, and a descent 48 is designed to ensure full inspection coverage via inspection images like 52 and 54.

The invention discloses a transmission tower modal parameter identification method based on an improved subspace algorithm and used for completing the modal parameter identification of a large span transmission tower structure through individually utilizing response data under the excitation of a field environment. According to the identification process, multi-group packet response data are integrated into synchronous pulse response data based on a random subspace identification principle; the integrated data avoid fitting errors caused by the packet identification, so the synchronous integrated identification of the data is realized; and a stable graph is constructed by utilizing modal parameter identification results under different system orders, so a modal parameter identification order determination problem under the environment excitation is solved, modal omission and repetition phenomena of traditional methods of a peak value method and the like are avoided, the obtained identification result is accurate and stable, and bases are established for subsequent structure damage detection and life estimation.

FIG. 1 is a perspective view of transmission tower 10, phase conductors 12, insulators 14, and shield wires 15. They are to be inspected by unmanned aerial vehicle UAV 20 with embedded processor and memory 22, radio 24, location rover 26, and camera 28. Continuously operating reference station 16 has GNSS antenna 17, GNSS receiver 19, and radio 18. The relative location between UAV 20 and reference station 16 can be accurately calculated using location corrections sent by radio 18 to radio 24. Camera 28 on UAV 20 is first used to capture two or more orientation images 38 and 39 of tower 10; lines 12 and 15; and insulators 14 from different vantage points. Terrestrial or close-range photogrammetry techniques are used create a three dimensional model of tower 10; lines 12 and 15; and insulators 14. Based on inspection resolution and safety objectives, a standoff distance 50 is determined. Then a flight path with segments for ascent 40, one or more loops 42, 44, 46, and a descent 48 is designed to ensure full inspection coverage via inspection images like 52 and 54.

The invention discloses a simulation method for calculating the lightning back-striking performance of UHV transmission lines. The simulation method comprises the following steps: dividing wires among long-span transmission towers into a plurality of line segments, establishing a distributed parameter circuit model for each line segment, establishing a multi-wave impedance model for each tower, then selecting the lightning parameters according to lightning activities, integrating all models and calculating the lightning withstand level, and calculating to obtain the back-striking trip rate of the UHV transmission lines according to the lightning withstand level and a series of formulae. The simulation method disclosed by the invention establishes the distributed parameter models of the line segments in consideration of high long-span transmission towers and long line spans, subdivides the wave impedance of different parts of the towers, and establishes the multi-wave impedance models in consideration of the refraction and reflection processes of lightning waves on the tower bodies so as to make the simulation results more precise and practical.

A device for reducing a shock load having a longitudinal direction along a power line coupled through an insulator to a crossarm of a transmission tower, comprising: a rotary damper coupled between the insulator and the crossarm for rotating by the insulator in the longitudinal direction in response to the shock load, the damper having an axle to which the insulator is rotatably coupled; and, a torsion bar coupled at a first end to the axle and at a second end to the crossarm for resisting rotation of the insulator, whereby at least a portion of the shock load is absorbed.

The invention provides a transmission tower on-line monitoring system and relates to the field of transmission tower on-line monitoring. The transmission tower on-line monitoring system solves the problems that an existing wired transmission tower on-line monitoring device is prone to being interfered by strong current signals on transmission lines and low in intellectualization degree. The transmission tower on-line monitoring system carries out multipoint data acquisition through N transmission tower monitoring units. Data comprise the tilt values, the microwave values, the wire tension values and the vibration values of transmission tower monitoring nodes. The tilt values, the microwave values, the wire tension values and the vibration values of the transmission tower monitoring nodes are transmitted to a transmission tower monitoring main unit in a wireless mode. The transmission tower monitoring main unit is used for monitoring the N transmission tower monitoring units, monitoring the temperature, the humidity, the wind speed, the wind direction, the rainfall, the air pressure and the sunlight illumination in the area where the transmission tower monitoring main unit is located, synthetically carrying out data processing and finally transmitting the processed data in a GPRS wireless communication mode to a monitoring center and mobile terminals capable of communicating with the monitoring center. The transmission tower on-line monitoring system is applicable to transmission tower on-line monitoring.

The present invention is directed at systems and methods for gathering wireless communication data within a target geographic area. More specifically, selected fleet vehicles are equipped to gather wireless communication data from transmission towers while simultaneously performing other tasks. A signal testing device gathers the signal data while temporarily positioned in a selected fleet vehicle that passes within a target geographic area. The signal testing device is then transferred to other fleet vehicles that also traverse the target geographic area until the desired data from the identified area is collected.

An antenna alignment and monitoring system is provided for telecom antennas and includes a pair of global navigation satellite system (GNSS) antennas mounted on a printed circuit board (PCB) for installation in a telecom antenna enclosure. Multiple telecom antennas are configured in an antenna array for mounting on a transmission tower or other elevated structure. A common GNSS receiver cycles among the GNSS antenna pairs for initially aligning and subsequently monitoring the azimuth alignment of the telecom antennas relative to a reference azimuth using GNSS triangulation.

The invention discloses an online monitoring method of a transmission tower inclination angle, and solves the economical, practical and limited use range problems in the existing method. The online monitoring method comprises the following steps: acquiring monitoring signals of a transmission tower to generate monitoring data, transmitting the monitoring data to an online monitoring server in real time, processing the monitoring data by a tower-line system mathematical model to obtain calculating data, transmitting the calculating data to a remote data server to be stored, and browsing and analyzing the data by a user. Through full utilization of an advanced database management technology, a graphical display technology and an internet communication technology of the computer, and through monitoring of several measured values which are sensitive to inclination of the transmission tower, the inclination angle of the transmission tower can be reliably monitored at high precision for a long time. The variation trend of the monitoring data can be conveniently operated, retrieved and browsed; the daily work can be done; and the inclination angle can be centrally managed and monitored with other systems on the same platform.

The invention provides a line wind load computing method for a transmission tower in a micro-morphogenetic region. The computing method can provide a theoretical foundation and a reference method for accurate computing a line wind load when a transmission line lies in the micro-morphogenetic region, a ground upheaval position or a ground sinking position. The computing method comprises a sectional type computing model for the line wind load in the micro-morphogenetic region, an average height computing method for a wire over the ground in a transmission line micro-morphogenetic region and a process for the computing method. The method has the advantages of accurate computing and convenience, and provides a reliable theoretical foundation for the transmission line built in the micro-morphogenetic region.

The invention relates to a high voltage transmission tower patrol system based on a GNSS (global navigation satellite system) and a two-dimension code, belonging to the field of the equipment maintenance. The high voltage transmission power patrol system comprises a tower two-dimension code nameplate which is arranged on a high voltage transmission tower, a patrol handheld terminal carried by the patrol personnel, a high voltage transmission tower data center which is arranged in a control center or a management center and a user terminal; an integrated intelligent patrol and information management system is realized on the basis of multimode GNSS point positioning, precise point positioning of GNSS / SBAS (satellite-based augmentation system), two-dimension code, GIS (geographic information system) and mobile communication network technology, a precise patrol position is provided by virtue of GNSS, the traditional patrol point is substituted by the two-dimension code, a wireless data transmission link is provided by the mobile communication network, the real-time dynamic information multimedia management system is realized by virtue of the GIS system, a more convenient, rapid, efficient and practical information management means is provided, and the high voltage transmission tower patrol system is an ideal high voltage transmission tower patrol and information management system.

The invention discloses a test system and method for mode and vibration of a self-supporting tower and a large-span power transmission tower. The test system is characterized by comprising a sensor, wherein the sensor is connected with a signal conditioner; the signal conditioner is connected with a digital signal collecting box; a digital signal collector is connected with a computer; the digital signal collector is provided with eight channels; and an auto-power spectrum analysis module, a cross-power spectrum analysis module and an environmental motivation mode analysis module are arranged in the computer. On the basis of an environmental motivation method, a method for fixing a reference point and moving a measured point is utilized to test mode parameters and vibration of a soaring power transmission tower. Besides, corresponding hardware equipment and software programs are utilized to ensure that the environmental motivation method can be used for performing off-line mode test and analysis for a power transmission tower model.

The invention relates to an unmanned aerial vehicle image transmission tower collapse identification method based on deep learning. The unmanned aerial vehicle image transmission tower collapse identification method comprises the steps: firstly, making a training data set and a verification data set, wherein the data set comprises two types of unmanned aerial vehicle images which comprise vertical towers and collapsed towers under different backgrounds; then establishing a deep learning model, and respectively taking a Faster R-CNN network based on ResNet and a Yolov3 network based on Darknet-53 as basic network structures for deep learning target detection; and carrying out data enhancement, training the deep learning model, solidifying and testing a detection model, carrying out model fusion, and finally identifying the tower image by utilizing the fused model. According to the invention, a deep learning target detection method is utilized to realize identification and fault detection of the transmission tower in the inspection process.

A tower lifting stand system and method is provided for use in lifting a large structure such as a transmission tower that is used in our power grid. A lifting mechanism engages a structure connected to the tower which work together to lift the tower once the lifting mechanism has been activated. Once the tower is lifted, a vertical extension section can be installed thus lifting the tower, and its associated power lines, vertically a predetermined distance.

The invention relates to a tempering damper system used for improving wind resistance stability of a transmission tower based on a single pendulum model. The damper system is composed of a spheroid mass block, a bracket, oil pressure type dissipation energy dampers, an oil pressure type anticollision damper, steel ropes and a buffering steel ring and the like, wherein the spheroid mass block is composed of a roundness steel disc; four groups of steel ropes support the lower half part of the spheroid mass block through the bracket and four groups of oil pressure type dissipation energy dampers are arranged around the bracket to achieve the purpose of energy consumption and vibration attenuation; in addition, when the swing amplitude of the spheroid mass block is oversize, and a tubular steel bar arranged below the bracket can collide the buffering steel ring so as to slow down the motion of the buffering steel ring; and the performance of the tempering damper system mainly depends on the size of rotational inertia, if the rotational inertia ratio of the tempering damper system to a controlled system is larger, the control effect is better. The tempering damper system is suitable for transmission towers of different tower types, is easy to install, and can obviously improve the wind resistance stability property of the transmission tower.

The invention discloses a welding process method of novel Q460 steel for transmission tower. The concrete process parameters are as follows: (1) selecting J607 welding rod or JM-60 solid welding wire for welding use; (2) selecting proper groove form according to the thickness of plate; (3) preheating to 50-100 DEG C when constructing outdoors or under an environment temperature of 0 DEG C, while not preheating when constructing indoors; (4) controlling heat input range during welding, at 12-21kJ / cm when the thickness of plate being less than or equal to 20mm, and at 15-45kJ / cm when the thickness of plate being more than 20mm; (5) adopting multi-layer multi-channel welding process with the temperature between channels not more than 150 DEG C; and (6) eliminating stress treatment and post-weld heat treatment. The inventive welding process method of novel Q460 steel can ensure successful application of Q460 high-strength steel in extra-high voltage transmission equipment, thus enhancing scientific level of the transmission field of China, and having great significance in construction of extra-high voltage grid of China.

The invention relates to a climbing detection robot for transmission towers, which comprises a big arm telescopic device, wherein two ends of the big arm telescopic device are provided with a manipulator device respectively; in the manipulator device, the upper end of a transmission device passes through a box body and is connected with a driving device in the box body; the lower end of the transmission device is connected with a clamping device; and a detection device is arranged in the box body. The climbing detection robot for the transmission towers provided by the invention can change the angle of manipulators according to angle bars toward different directions on the transmission towers so as to achieve line switching between different angle bars, has strong barrier-crossing capacity, can carry the detection device to detect the angle bars at every position on the transmission towers, is efficient and safe, and can greatly reduce the labor intensity; besides, the climbing detection robot has the advantages of simple structure, convenient maintenance and suitable popularization, cannot be limited by the factors of surrounding environment, weather and the like, and can detect the transmission towers at any time.

A design method of an aeroelastic model for a long-span transmission tower-line system is disclosed. On the basis of boundary layer wind tunnel test data of a rigid model, a finite element model is utilized to calculate that relaxed Froude number similarity criterion of transmission towers, the influence of the elastic stiffness of a transmission line and two kinds of variable proportion transmission line models upon wind-induced response is changed, an aeroelastic model with long span is designed. The influence of material nonlinearity and gradient wind height of concrete filled steel tube onwind-induced response is further analyzed by the finite element model. The method has the advantages that the aeroelastic model of long span can be reasonably designed by increasing the elastic stiffness of the transmission line and adopting an accurate line length similarity ratio; consideration of the material nonlinearity of concrete-filled steel tubes has little effect on wind-induced response at design wind speed, and the wind-induced response decreases when considering the gradient wind height.

The invention belongs to the field of power system overhead transmission line tower safety monitoring, and provides a transmission tower online safety monitoring system and method for stress measuring. Firstly, stress sensors are installed on the key parts of a tower, and installation points can be obtained through finite element analysis and load application. Measurement values of the stress sensors are transmitted to a background server through the internet, the background server works out the reliability of each section of main material in real time according to each group of data together with the mean value and the variance of the strength of steel materials, and therefore the overall reliability of the tower can be obtained. The transmission tower online safety monitoring system and method have the following advantages that the problem of real-time tower stress monitoring is solved, and the stress distribution situations of the key parts can be monitored in real time; the safety state of the tower can be estimated in real time and serious accidents such as collapse can be effectively prevented under severe working conditions; research results are wide in application and can be directly applied to various tower shapes.

The invention discloses a composite material transmission tower, which has a conical tubular structure. Thermosetting resin serves as a matrix, continuous glass fiber yarns serve as a reinforcing material, and the glass fiber yarns impregnated with the resin are wound on the surface of a conical tubular core mold layer by layer through a composite material winding process, wherein an included angle (A) between one part of the glass fiber yarns and a rotating axis of the core mold is more than or equal to 0 degree and less than or equal to 15 degrees, and after the whole is cured, the conical tubular structure is formed through demolding. The composite material transmission tower has high axial strength, high axial modulus and high flexural strength; and during outdoor use, the transmission tower has high acid resistance, alkali resistance and ageing resistance, and the service life is 25 to 100 years.

Disclosed is a power transmission tower, which includes a tower body; first through sixth main insulation arms connected by one end thereof to the tower body with an angle with the tower body, respectively, and arranged radially and symmetrically about the tower body in a longitudinal direction; and first through eighth auxiliary insulation arms for selectively connecting the other end of the first through sixth main insulation arms and the tower body so that each of the auxiliary insulation arms constitutes each side of an octagon.Since the insulation arms are octagonally arranged, it is possible to reinforce a mechanical strength and enhance electric properties of the tower.

The present invention relates to an electric transmission line tower displacement monitoring system and method. The system comprises a monitoring base station, a monitoring terminal and a monitoring server; the monitoring base station is a Beidou navigation satellite system base station; the monitoring terminal is installed on an electric transmission tower and comprises a Beidou location chip; the monitoring base station is connected with the monitoring terminal to send geographical coordinates of the monitoring base station; the monitoring terminal receives the geographical coordinates of the monitoring base station and obtain posture information of the electric transmission line tower through adoption of the carrier phase difference technology; the monitoring terminal is connected withthe monitoring server to send the posture information of the electric transmission line tower; and the monitoring server receives the posture information of the electric transmission line tower and compares with preset posture information for monitoring. The electric transmission line tower displacement monitoring system and method can effectively improve the operation reliability of power grid, reduce the operation cost and greatly reduce the work intensity of operation and maintenance personnel.

The invention relates to a system and a simulation method for transmission tower structure static mechanic analysis. Modeling of a transmission tower is carried out by utilizing a development function of software of finite element analysis, a transmission pole section bar and a rod piece material are integrated, the dead load or the icing load of a transmission pole and a lead as well as the wind load of a tower body and the lead are computed through directly inputting the actual work condition data of the transmission tower, and comprehensive analysis processing is carried out on the loads to generate an analysis report, a stress nephogram and an aberration nephogram, so that a complicated computational process and a complicated operation process are reduced, and thus the design of the transmission tower becomes fast and effective.

The invention relates to a discharge counter for a line lightning arrester. The discharge counter for the line lightning arrester comprises a shell, a glass sealing cover, a valve block, a silicon bridge rectifier, a capacitor, an electromagnetic counter and a display screen. The glass sealing cover is a convex sphere type glass sealing cover, and the outer surface of numbers of the display screen are covered with a fluorescent layer. The discharge counter for the line lightning arrester can adapt to the height of a transmission tower, and full-screen large-size numbers can be displayed in a page turning mode; meanwhile, the numbers are coated with fluorescent powder, so requirements for night observation are met. Convex sphere glass is adopted in the glass sealing cover of the counter, and the digital display effect can be further enhanced.

A transmission tower structure for suspending from an arched crossarm a three phased circuit arranged in a compact delta configuration that improves the surge impedance loading (SIL) of a transmission line, reduces its series impedance, lowers both resistive and corona losses, and moderates electromagnetic fields and audible noise effects at the ground level—all achieved in a cost effective manner. The structure further has a low overall height and aesthetic appearance enhancing the public acceptance of the embodiments.

The invention relates to a testing method of parameters and characteristics of lightning strike of an electric transmission line, belonging to the technical field of electrician lightning protection. The testing method comprises the following steps: firstly, testing the lightning current on a first lightning conductor, an electric transmission tower and a three-phase lead; carrying out integration and reduction on a plurality of lightning current signals to obtain analog signals in proportion to the derivative of the tested lightning current; carrying out A / D conversion on a plurality of analog signals obtained by integration to obtain digital signals; carrying out operation processing on a plurality of digital signals output by an A / D conversion module to obtain signals of the tested lightning current; and judging whether the lightning strike is shielding failure or counterattack according to the polarity relation of the waveform of the tested lightning current. By using a multi-channel method, the invention not only can test the waveform of the lightning current of a lightning strike line but also can judge whether the lightning strike is counterattack or shielding failure easily according to the tested data, and can provide a theoretical basis for adopting pertinent lightning protection measures.

The invention belongs to the technical field of power transmission line equipment, particularly relates to a wind resistance and reinforcement transformation method of a high-voltage and superhigh-voltage power transmission line iron tower. The method comprises the following steps of: increasing a tabula surface at a proper position within the range of a power transmission tower body to improve the rigidity and the stability of the high-voltage and superhigh-voltage power transmission line iron tower, and adopting a method increasing the cross section of a rod piece at a local weak part of a power transmission tower according to different tower shapes to improve local bearing capacity; and in consideration of the safety of the structure of the power transmission tower during site operation, the invention further provides a specific construction method during reinforcement. The method is simple in design and construction, less in steel dosage, and prominent in effect, and can be widely used for the wind resistance and reinforcement transformation of the high-voltage and superhigh-voltage power transmission line iron tower, so that the whole rigidity of the power transmission tower can be improved, and the whole damage caused by the buckling and the instability of a local rod piece can be reduced.

The invention provides a device for inhibiting horizontal wind direction vortex-induced wind vibration of a conical pole piece such as a steel tube transmission tower and the like with the circular-tube-shaped cross section or outer gradient less than 2%, and a method thereof. A jack rib, a fin keel or a spiral circular cross-section current disturbing wire is adopted to be wound on the surface of a steel tube, and a method for selecting and arranging the spiral current disturbing wire comprises: a spiral line has the diameter of D / 10 and the pitch of 12D, wherein D represents the outer diameter of the steel tube pole piece. Furthermore, the spiral line current disturbing device has simple structure, easy installation and maintenance as well as low cost, simultaneously control one stage and two-stage breeze vibration of the large slenderness ratio pole pieces, and is good in effect.