306 results about "Insulator strings" patented technology

The invention discloses an embedded power transmission line insulator chain defect identification method, system and device and a storage medium, and belongs to the technical field of defect identification, and the method comprises the steps: obtaining an insulator chain image, carrying out the insulator chain region positioning of the insulator chain image through color space change and image processing, and obtaining the coordinates of a target insulator chain; based on the target insulator chain coordinate, feature extraction is carried out on an insulator sheet, and an insulator sheet state vector is constructed; judging the state vector of the insulator sheet to obtain a suspected defective insulator list; calculating the insulator sheets in the suspected defect insulator list and detecting the surfaces of the insulator sheets to obtain the defect types and positions of the surfaces of the insulator sheets; and according to the defect type and position, the associated defect type code and description, generating structured power transmission line insulator defect report data, thereby improving the accuracy of defect identification, the fineness of defect classification and the practicability of a result report.

The invention relates to the technical field of electrical equipment defect monitoring, in particular to a high-voltage equipment defect positioning system and method based on multi-modal image fusion, and the system comprises an ultraviolet triggering module, a modal synchronization module, a space positioning module, a structure recognition module and a fusion diagnosis module. According to the method, automatic calibration of a suspected defect area can be realized by performing quantitative threshold judgment on a corona discharge signal in an ultraviolet image, the consistency of three-mode data in space and time dimensions is ensured, and the accuracy of the defect area is improved by comparing three types of coordinates of a lead hot spot, boundary geometry and a spot center in the image and performing registration offset correction. The image feature alignment precision is improved, the insulator chain light spot distribution path is extracted, the continuous distribution length is calculated and corresponds to the pollution level standard, automatic identification of the pollution level is achieved, a multi-modal image fusion feature block is constructed, and a risk sorting label is given. And the defect positioning accuracy and the comprehensive evaluation capability on the defect property and the influence degree are effectively improved.

The invention relates to an ultra-high voltage line lightning resistance level evaluation method and device based on a tower head gap structure. The method comprises the following steps: constructing a simulation model according to line structure information and electrical parameters of an extra-high voltage line and tower structure information of a power transmission tower; inputting lightning current waveform parameters and lightning channel wave impedance parameters of the extra-high voltage line into the simulation model to obtain voltage distribution information and current propagation characteristic information of the extra-high voltage line under a lightning stroke condition; flashover criterion information is determined according to the insulator string discharge voltage characteristic information and the tower head air gap breakdown voltage characteristic information of the extra-high voltage line; and according to the voltage distribution information, the current propagation characteristic information and the flashover criterion information, determining a lightning resistance level evaluation result. By adopting the method, the influence of the breakdown characteristic of the tower head air gap, the complexity of the tower structure and the dynamic characteristic of lightning current propagation on the lightning resistance level evaluation can be comprehensively considered, and the accuracy of the lightning resistance level evaluation result of the extra-high voltage line is improved.

The invention belongs to the technical field of insulator chain production, particularly relates to a power insulator manufacturing and assembling machine and an assembling process, and aims to solve the problems that manual assembling in the prior art is not only low in efficiency but also prone to bumping, the following scheme is provided: the power insulator manufacturing and assembling machine comprises a fixed base which is of a long-strip-shaped structure on the whole; a longitudinal through hole is formed in the middle, close to the feeding end, of the fixed base, a rectangular notch and an installation notch which are communicated with the longitudinal through hole are formed in the middles of the two sides of the longitudinal through hole respectively, a ground rail used for bearing an assembled insulator string is clamped in the installation notch, and a downward pressing mechanism is arranged on the portion, located above the longitudinal through hole, of the upper surface of the fixed base. According to the invention, the clamping mechanism can slide to a place far away from the butt joint pressing station before butt joint, namely during feeding, so that the safety performance is improved, the space of the feeding position is expanded, the collision risk of the insulator disc is reduced, the feeding stage can be replaced by a manipulator, the labor intensity is reduced, and the feeding precision is improved.

The invention discloses a zero-value insulator identification method and system based on multiple sensing modules. Firstly, space electric field probes are arranged in the space where two insulator strings are located, and the detection path of each probe is defined; then judging whether the insulator strings deflect or not by calculating the relative distance difference between the two insulator strings; if not, the space electric field effective value of each detection path at the same moment is collected, and whether a zero-value insulator exists or not is judged by calculating a symmetry judgment value; and if not, independently acquiring the effective value of the space electric field on the corresponding path of the insulator string at a set sampling interval, and judging whether the zero-value insulator exists or not by calculating the electric field deviation rate on each section of sampling path. The zero-value insulator in the insulator string under different postures can be accurately recognized, and the method has the advantages of being non-contact, high in real-time performance, capable of adapting to complex working conditions and the like.

The invention discloses a multi-modal data fusion-based DC insulator degradation diagnosis method and system. The method comprises the following steps of obtaining infrared image data and current data of a to-be-detected insulator string; constructing an insulator chain model according to the infrared image data, and obtaining the temperature of each insulator according to the insulator chain model and the infrared image data; obtaining the theoretical temperature of each insulator according to the current data; and according to the theoretical temperature of the insulator and the temperature of the insulator, degradation identification of the insulator is realized. Obtaining historical maintenance data of the insulator, constructing a self-adaptive threshold according to the historical maintenance data of the insulator, and performing secondary judgment on a degradation identification result through the self-adaptive threshold; according to the method, the problems of diagnosis one-sidedness, poor environmental adaptability, low degradation positioning precision and the like caused by dependence on a single data source in a traditional method are effectively solved, and the accuracy, robustness and engineering practicability of direct current insulator degradation diagnosis are remarkably improved.

The invention belongs to the technical field of power transmission line operation and maintenance, and particularly relates to a working state live detection device and method for a horizontal insulator string, and the device comprises an unmanned plane, a robot, a robot hoisting mechanism, and a ground control terminal. The robot comprises a saddle-shaped frame, a state detection mechanism, a position recognition module and an axial walking mechanism, the state detection mechanism, the position recognition module and the axial walking mechanism are installed on the saddle-shaped frame, the state detection mechanism is electrically connected with the position recognition module and the axial walking mechanism, the saddle-shaped frame is provided with a balance weight, and the inner space of the saddle-shaped frame is in clearance fit with the outer diameter of an insulator string to be detected. The overall gravity center is lower than the lowest point of the insulator string. When the device is used for measurement, only the unmanned aerial vehicle needs to be controlled to hoist the robot to an insulator chain, the robot can perform self-positioning and complete detection piece by piece, multi-machine cooperative work can be realized, and the device is convenient, rapid and safe. The invention also provides an automatic detection method using the device, a non-transitory readable recording medium storing a program of the method, and a system comprising the medium.

The invention discloses a multi-union strain insulator detection device based on unmanned aerial vehicle mounting, which comprises a walking mechanism and a remote controller, the outer wall of the top of the walking mechanism is fixedly connected with a hanging ring, the outer wall of the walking mechanism is fixedly connected with a frame, the outer wall of the frame is fixedly connected with two length-adjustable guide mechanisms, and the length-adjustable guide mechanisms are fixedly connected with the remote controller. The guide mechanism is arranged on the frame and is symmetrical about the frame, the outer wall of the frame is fixedly connected with a mounting support, and the mounting support is located at the bottom of the guide mechanism and is symmetrical about the frame. During use, the unmanned aerial vehicle and the hanging ring are connected through the multiple sections of connecting rods, then the unmanned aerial vehicle is transported to an insulator of a power transmission line in an air mode, the unmanned aerial vehicle can move on the insulator through the walking mechanism, the two layers of detection mechanisms are arranged on the frame, and therefore an upper insulator chain and a lower insulator chain can be detected; in this way, the device can adapt to insulator strings with different diameters, and the device can be more stable during walking through the guide mechanism.

The invention discloses an unmanned aerial vehicle mounted insulator detection device and a use method thereof. The unmanned aerial vehicle mounted insulator detection device comprises a hanging frame, a driving unit, a detection unit, a stabilizing unit and an auxiliary unit, the hanging frame comprises two center plates and two triple blocks connected with the two center plates, the opposite sides of the two center plates are fixedly connected with extension frames, and the extension frames and the center plates jointly form an inverted-U-shaped structure capable of bestriding an insulator chain; the driving unit is of a flexible belt transmission structure; the detection unit comprises a zero-value detector arranged on the extension frame, and the signal input end of the zero-value detector is electrically connected with a detection needle; the auxiliary unit comprises V-shaped sliding rails arranged at the two ends of the center plate, guide blocks connected to the two slopes of the V-shaped sliding rails in a sliding mode, a supporting shaft fixed to the guide blocks and a friction sleeve rotationally connected to the supporting shaft through a rotating sleeve. The problem that in the prior art, an insulator zero value detection device is large in displacement shaking amount on an insulator chain is solved.

The invention discloses a method and a combination tool for live-line installation or replacement of a windage yaw prevention insulator, and relates to the technical field of electric power auxiliary equipment, the installation method comprises the following steps: opening an upper-layer live-line lead, putting down an insulating lifting rope through an insulating fork-shaped pulley rod on a working layer, connecting the insulating lifting rope with an insulating lock rod, and installing a windage yaw prevention insulator on the upper-layer live-line lead. The method comprises the following steps: connecting an insulating lock head rod with an electrified lead of a working layer, tightening an insulating lifting rope, carrying out positioning control on the electrified lead, dismounting and mounting the windage yaw prevention insulator string, and finally repeating the steps to complete replacement of the windage yaw prevention insulator string of the next layer. The windage yaw prevention insulator string can be safely and efficiently installed or replaced, and the working space and the power supply reliability of operators are improved; the safe distance of the live lead can be adjusted, and a safe operation space is provided for operators.

This application relates to the technical field of transmission line sensor detection, specifically to an icing galloping detection method and system for power transmission and transformation lines based on optical fiber sensors. The method includes: obtaining the wind speed, wind direction, temperature, and relative humidity at each moment during each acquisition period in the environment where the power transmission and transformation line is located, as well as the tension data of the suspension insulator string connecting the power transmission and transformation line at each moment; calculating the trend change coefficient and wind force influence coefficient for each acquisition period to obtain the meteorological risk coefficient for each acquisition period; determining the galloping risk discrimination value for the current acquisition period; and detecting the icing galloping of the power transmission and transformation line based on the galloping risk discrimination value. This application can accurately evaluate the icing galloping state of the power transmission and transformation line, improve the accuracy of detecting the icing galloping of the power transmission and transformation line, and ensure the safe operation of the power transmission of the power transmission and transformation line.

The utility model discloses a ten-bundle conductor tension string suitable for ultrahigh altitude, which belongs to the technical field of tension strings and comprises two groups of tension string units. The tension string unit comprises two insulator strings which are arranged in parallel at an interval; one end of the insulator string is connected with an iron tower cross arm through the hanging point side fitting, and the other end of the insulator string is connected with a lead through the lead side fitting; the wire side fitting is provided with a shielding ring assembly. The wire side fitting is also provided with a grading ring which is wound on the tension string unit. According to the ten-bundle conductor strain insulator string suitable for the ultrahigh altitude, the structure can ensure that the electromagnetic environment and the air gap of a power transmission line do not exceed the limit under the condition of the ultrahigh altitude, the ecological environment protection requirement is met, and the engineering construction, the economic development and the ecological environment protection are organically combined.

The invention relates to the technical field of power grid data processing, in particular to a power grid digital twinning technology analysis method and system based on AI image recognition, and the method comprises the following steps: collecting a visible light image and an ultraviolet image of an insulator string through a multi-spectral camera carried by an unmanned aerial vehicle, and obtaining line leakage current waveform data at the same time; generating a multi-scale pollution feature matrix; calculating the equivalent resistivity of the polluted conductive path; reconstructing surface electric field distribution of the digital twin based on the equivalent resistivity, and simulating field intensity distortion gradients under different humidity conditions; when the field intensity distortion gradient reaches a preset percentage of the air breakdown field intensity, a graded early warning signal is generated; according to the invention, the electric field distortion of the dirty layer under different humidity conditions is simulated to generate the humidity-field intensity mapping relation, so that whether the insulation performance of the electrical equipment is affected or not can be judged.

The invention discloses a power transmission equipment insulator defect identification method and device, equipment and a medium, and belongs to the field of power equipment defect identification, and the method comprises the steps: respectively extracting corresponding feature data from electric signal monitoring data, infrared data and image data of an insulator string; fusing the characteristic data corresponding to the electric signal monitoring data and the infrared data through a cross-modal attention mechanism, and positioning an abnormal region; determining a defect physical region image of the insulator string according to the abnormal region and feature data corresponding to the image data; performing secondary verification on the defect physical region image according to the environmental parameter data of the space where the insulator string is located; and when the secondary verification is passed, respectively calculating a plurality of defect judgment indexes of the insulator chain according to the defect physical region image, and determining that the insulator chain has defects when any defect judgment index meets a preset condition. According to the invention, the problem of low insulator defect identification accuracy in a complex environment can be solved.

Provided in the present application is a guyed tower, comprising: a first tower body and a second tower body which are spaced apart from each other in a first direction; a first guy wire assembly fixedly connected between the upper end of the first tower body and the ground and used for tensioning the first tower body; a second guy wire assembly fixedly connected between the upper end of the second tower body and the ground and used for tensioning the second tower body; a third guy wire assembly fixedly connected between the upper end of the first tower body and the upper end of the second tower body; and at least one cross arm assembly comprising a plurality of insulator assemblies which are successively connected, every two adjacent insulator assemblies being fixedly connected to each other by means of a first connecting assembly, the first connecting assemblies being used for hanging of wires, the wires extending in a second direction, the second direction being perpendicular to the first direction, and two ends of the cross arm assembly being respectively and fixedly connected to the first tower body and the second tower body by means of second connecting assemblies. Such design removes a traditional suspension insulator string, thus making the arrangement of power transmission lines more compact, and reducing the construction cost of guyed towers.

The present application discloses an insulator string replacement device, comprising: a right-angle hanger clamp, a strain conductor clamp, two connecting rods, and a lead screw assembly corresponding to each connecting rod one by one; a first clamping groove cavity is formed in the right-angle hanger clamp in the thickness direction, and both ends of the right-angle hanger clamp are respectively connected to the first ends of the connecting rods through the lead screw assemblies; a first locking member is detachably arranged on the first clamping groove cavity; the strain clamp is clamped on the strain clamp, and both ends of the strain clamp are respectively connected to the second ends of the connecting rods; the lead screw assembly is used for adjusting the distance between the right-angle hanger clamp and the strain clamp. The whole is applicable to the replacement operation of the insulator string between the right-angle hanger and the strain clamp, with a simple structure, convenient installation and disassembly, and ensuring the operation efficiency.

The invention belongs to the technical field of power robots. According to the suspension insulator layered progressive intelligent deicing method, robot and system, in the insulator multi-dimensional sensing intelligent recognition step, after the deicing robot is hung to a tower where an insulator string is located, an insulator multi-dimensional sensing recognition agent is called to recognize an insulator string image in an icing state, and the insulator string image is subjected to image recognition; obtaining a position identification result and an icing thickness of the insulator string; in the layered progressive adaptive decision-making step, an autonomous decision-making agent is called to adaptively select a deicing strategy according to the icing thickness, and a deicing clamping jaw is controlled to deice the insulator chain layer by layer according to the selected deicing strategy and the position identification result of the insulator chain; in the effect evaluation closed-loop strategy adjustment step, the ice detection agent is autonomously called in the deicing process to evaluate the deicing effect, and the deicing strategy is dynamically adjusted in a closed-loop mode according to the deicing effect evaluation result. According to the invention, the accuracy, efficiency and safety of deicing operation are greatly improved.

The invention discloses a voltage balance control method for a disc-shaped suspension insulator, and particularly relates to the field of power systems, and the method comprises the steps: carrying out the simulation calculation of the electric field distribution of an insulator string through finite element simulation software, and obtaining the voltage and electric field distribution conditions of the insulator string when a classification ring is not installed; electric field simulation analysis is carried out by establishing a simulation model of the insulator string and the grading rings, and the diameter, height and relative position of each grading ring are iteratively adjusted; the grading ring is fixed at the axial position of the insulator string; and nano-scale particles are added into the insulating material matrix. The insulation reliability of the insulator is improved, the service life of the insulator is prolonged, and meanwhile the voltage distribution coefficient of each insulator unit tends to be balanced.

This application discloses a 35KV tension insulator string replacement device, comprising: a right-angled plate fixture, a tension conductor fixture, two connecting rods, and a screw assembly corresponding to each connecting rod. The right-angled plate fixture is provided with a slot cavity in the thickness direction, and the two ends of the right-angled plate fixture are respectively connected to the first end of the connecting rod via a screw assembly. The slot cavity is detachably provided with a locking member. The tension conductor fixture is fixed to the tension conductor, and the two ends of the tension conductor fixture are respectively connected to the second end of the connecting rod. The screw assembly is used to adjust the spacing between the right-angled plate fixture and the tension conductor fixture. The entire device is suitable for replacing insulator strings between the right-angled plate and the tension conductor, and has a simple structure, easy assembly and disassembly, and ensures operational efficiency.

The invention discloses a non-inductive assembly cooperative control method and system for an equipotential insulator string W pin, and relates to the technical field of intelligent control, and the method comprises the steps: carrying a straddle type intelligent operation trolley of a three-dimensional laser radar and a visual camera, scanning an insulator string of a power transmission line, constructing a three-dimensional surface grid model and W pin slot space attitude information, and carrying out the three-dimensional surface grid model and W pin slot space attitude information; carrying out insertion path identification and determining a candidate path set; the wind disturbance sensing module is used for recognizing interference in real time, screening the inserting path, controlling the mechanical arm and the thin electric claw to execute non-inductive assembly, and judging the inserting state through the force sensor to conduct dynamic adjustment. The technical problem that in the prior art, a traditional W pin assembling method cannot cope with dynamic environment changes, so that the assembling success rate and stability are poor is solved, and the purposes that the assembling path is dynamically optimized through a real-time wind disturbance sensing and intelligent path feedback adjusting mechanism, and the assembling efficiency is improved are achieved. And the non-inductive assembling success rate and stability of the W pin in a complex environment are improved.

The invention discloses an ultra / extra-high voltage alternating current line degraded insulator live detection and intelligent evaluation system, which comprises a data acquisition module, which adopts a high-precision electric field sensor array with electromagnetic protection to carry out multi-angle electric field live scanning, sampling and detection on different types of insulator strings; the feature extraction module is used for establishing an electric field distribution multi-dimensional feature library including an electric field gradient matrix, an electric field entropy value, electric field spectral density and electric field polarization features according to the collected data features, and extracting abnormal features through wavelet transform and an outlier detection algorithm; and the intelligent evaluation module is used for constructing an insulator multi-physics field coupling model, establishing a mapping relation between electric field characteristics and degradation types, positions and degrees through bidirectional calibration of measured data and model prediction data, and outputting an evaluation result. The intelligent evaluation system can efficiently and accurately identify the degradation state of the insulator, reduces the operation and maintenance cost of a power grid, and guarantees the safe and stable operation of a power system.

This application provides a method and system for monitoring and alarming the tilt of overhead ground wire suspension insulator strings. The method includes: synchronously acquiring insulator string operating status and environmental data through a multi-sensor acquisition module, including micro-meteorological, tilt angle, infrared image sensors, and a right-angle gate module; performing Kalman filtering, noise reduction, normalization, and LZ77 compression on the data to form a unified feature dataset; real-time anomaly detection and data upload at the edge using a lightweight CNN-LSTM fusion model; and fault type identification and severity assessment via ResNet in the cloud, including accurate displacement calculation; generating early warning information and maintenance suggestions by combining historical data and maintenance strategies, and pushing them through a multi-channel method including tower-side audible and visual alarms and mobile terminal push notifications. This application achieves all-weather, high-precision monitoring, improves the accuracy of anomaly identification and alarm timeliness, ensures the safe operation of transmission lines, and reduces power outage losses.

The present application provides a kind of transmission conductor negative stiffness damper, provides damping by another connection damper, negative stiffness device increases damping ratio, realizes conductor model damping effect;Main components are arranged side by side by fixed magnet and movable magnet, the interaction force between its magnets is basically linear increase, that is, it can guarantee constant negative stiffness value, damping effect is obvious and model loss is small, and durability is strong;Light weight, convenient transportation, easy to install and maintain;Transmission conductor negative stiffness damper is rigidly connected with insulator string as a whole, and can effectively transmit the vibration of conductor galloping;The present application is novel and unique in design, has wide range of application, and has good popularization and application value and economic benefits.

The invention provides a differential pressure detection device and a method for determining the degradation condition of an insulator string. The device comprises a detection circuit and a first resistor, and the voltage difference detection device is used for detecting the voltage difference between the input end and the output end of a corresponding insulator. The detection circuit is connected with the first resistor in series, the detection circuit comprises a first breakdown unit, a second breakdown unit, a second resistor and a current detection unit, and the resistance value of the second resistor is smaller than that of the first resistor; the first voltage stabilizing unit, the second voltage stabilizing unit and the second resistor are connected in parallel; the current detection unit is used for detecting current flowing through the second resistor. Through the voltage difference detection device, the voltage difference condition of the insulator string can be determined, the degradation condition of the insulator string is evaluated according to the voltage difference condition, and the processing efficiency is improved.

The invention discloses a method and a system for predicting discharge voltage of an insulator string at an extreme temperature, and belongs to the technical field of high voltage and insulation. The method comprises the following steps: acquiring test data of an insulator string discharge voltage test, preprocessing the test data, and dividing the preprocessed test data into a training set and a test set according to a preset proportion; obtaining an optimal key hyper-parameter, establishing an XGBoost model through the optimal key hyper-parameter, and training the XGBoost model by using the training set to obtain an XGBoost discharge voltage prediction model; and inputting a new data set to be predicted into the model, and predicting the discharge voltage of the insulator string at the extreme temperature to obtain a predicted value of the discharge voltage of the insulator string at the extreme temperature. Compared with a traditional discharge voltage calculation method, the method can predict the discharge voltage of insulators with different string numbers and under different meteorological conditions, is higher in accuracy, does not need a tedious calculation program, and is high in prediction efficiency.

The invention belongs to the field of insulator quality detection robots in overhead transmission lines, and discloses a climbing mechanism for vertical insulator string detection, a robot and a climbing detection method thereof, the climbing mechanism comprises a ball spline, the vertical upward direction is used as the height direction, and the ball spline extends along the height direction; the spline shaft mounting plate is fixedly connected to the lower surface of the ball spline in a sleeving manner; the claw plate is movably connected to the upper surface of the ball spline in a sleeving mode through a spline nut sleeve; the rubber gasket is fixedly mounted on the lower surface of the claw plate; a first driving mechanism is arranged on the spline shaft mounting plate, connected with the claw plate and used for driving the claw plate to move on the ball spline in the height direction. The climbing mechanism can accurately move up and down along the insulator through the first driving mechanism, the climbing mechanism can accurately rotate along the insulator through the second driving mechanism, and the climbing mechanism can climb on the insulator through cooperation of the two driving mechanisms.

The invention discloses a composite porcelain insulator string, and belongs to the technical field of power equipment. The insulator string is mainly formed by compounding an end hardware fitting, a core rod and a porcelain piece sleeved on the core rod. The core is that the fittings are crimped at two ends of the core rod for connection; the core rod is used as a bearing and internal insulation main body; the porcelain piece is provided with the hollow pipe and the umbrella skirts, and the porcelain piece and the core rod are glued into a whole through the insulation paste, so that the creepage distance is effectively increased, the core rod is protected from environmental erosion, and aging and brittle failure of the core rod are prevented. The composite insulator combines the advantages of good mechanical stability of a porcelain insulator and strong bearing capacity of a composite insulator, has excellent electromechanical performance and long-term operation reliability, and is particularly suitable for an ultra-high voltage transmission line.

The invention relates to the technical field of electric leakage measurement, and discloses an on-line monitoring method and system for an interface leakage current of an insulation crossing frame, and the method comprises the steps: extracting a time domain waveform of a leakage current signal in an insulator string as original leakage current data; according to the geometric topological parameters of the insulator string, constructing a surface electric field distribution gradient of the insulator string, and extracting an electric field feature vector of the surface electric field distribution gradient; separating an interface leakage current component in the electric field feature vector; the method comprises the following steps: acquiring an environmental noise sample in a state that an insulator string has no working voltage, and constructing a noise reference set of the insulator string; performing coherent filtering on the interface leakage current component according to the noise reference set to generate a purified leakage current signal; generating an interface leakage current effective value of the insulation crossing frame according to the root-mean-square value of the purified leakage current signal; according to the invention, the accuracy of online monitoring of the interface leakage current of the insulation crossing frame can be improved.

The present invention discloses a relay-type wireless power supply system for insulators and a method for optimizing coil parameters thereof. The system includes an insulator string, a transmitting coil, a relay coil, and a receiving coil. The insulator string includes a plurality of insulator discs. The transmitting coil is embedded outside the first insulator disc, the receiving coil is embedded outside the last insulator disc, and the relay coil is embedded outside the insulator discs in the middle part; The method includes: determining the coil diameter according to the diameter of the insulator disc and the firmness of the embedded coil; selecting the number of coil turns and the wire diameter according to the external insulation characteristics of the insulator string itself and the requirements of the coil quality factor; taking the minimum power supply requirement of the on-line monitoring equipment as the premise and the improvement of the transmission efficiency as the goal, optimizing the number of relay coils and the arrangement position of the coils. The present invention significantly improves the transmission power and transmission efficiency of the system, realizes the stable operation of the monitoring equipment of the transmission tower, is simple, effective and easy to implement, and has good economy and practicability.

The application discloses a kind of insulator hanging direction judgment method and system in strain insulator string, equipment, it is related to power transmission engineering technical field, it includes according to line parameter data to judge the control operating condition of overhead line;Calculate the hanging point tension of considering string weight under corresponding control operating condition;The hanging point tension of considering string weight is judged, if hanging point tension does not comply with preset requirement, then relax the safety factor of overhead line, until hanging point tension complies with preset requirement, then calculate the inclination angle of midpoint of strain insulator string considering string weight under average temperature operating condition;The hanging direction of insulator is judged according to the inclination angle of midpoint of strain insulator string considering string weight under average temperature operating condition.The application can consider the influence of strain string unit load on sag and tension, calculate the tension of overhead line under non-uniform load, and judge the hanging direction of insulator in strain insulator string, to achieve more accurate calculation, ensure the accuracy and safety of design.