10 kV distribution line insulation tower head

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized by adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by a gold tool and form an insulation tower head integer, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention,the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy in improving self-cleaning ability and the occurrence of pollution flashover can be basically and completelyprecluded, which is beneficial in charged operation, simple in an operation process and improves the operation security.

Ground wire hanging and dismounting device, system and method

The invention provides a grounding wire hanging and dismounting device, system and method. The device comprises a wire clamping and fixing assembly and a ground wire dismounting and fixing assembly. Wherein the ground wire dismounting and fixing assembly is arranged on the wire clamping and fixing assembly. The wire clamping and fixing assembly is hung on the unmanned aerial vehicle so as to be hung on the wire along with the unmanned aerial vehicle, and when the unmanned aerial vehicle releases the wire clamping and fixing assembly, the wire clamping and fixing assembly is detachably clamped and fixed on the wire; the ground wire dismounting and fixing assembly is hung on the wire along with the wire clamping and fixing assembly, and the ground wire can be lifted to the wire clamping and fixing assembly, so that grounding of the wire is realized, personnel do not need to climb a tower in the whole operation process, the flexibility, reliability and safety of hanging and dismounting of ...

Electric transmission line wide area ice condition monitoring method

The invention provides an electric transmission line wide area ice condition monitoring method. The method includes the following steps that a laser radar device is used for collecting point cloud data of an ice coating guide wire; point space coordinates and ice coating thickness of the ice coating guide wire are determined; an equivalent ice coating thickness is calculated. According to the electric transmission line wide area ice condition monitoring method, the laser radar device is used for measuring displacement deformation and ice coating thickness of the ice coating guide wire, a finite element model is established, the equivalent ice coating thickness of the guide wire is calculated according to actual distribution of ice on the guide wire, and the ice trouble degree is evaluated.

Equipotential access method of alternating current ultra / super high-tension line live-line work and electric potential transferring stick

The invention is a hot-line job equipotential entering method of A.C. extra or ultrahigh voltage transmission line and the electric displacement rod. The method is characterized in that the operating staff wears extra or ultrahigh voltage A.C. hot-line job complete set barrier clothes and accesses the charged body by the insulated delivery vehicle after connecting the electric displacement rod and the barrier clothes, when operating staff is 0.4-0.6m from the charged body, the operating staff use the special electric displacement rod to contact the charged body in order to transfer electric potential and enter the equipotential. The electric displacement rod comprises a lead-in wire 7, a connector 8, a metallic rod 9 and a crampon 10, wherein the lead-in wire 7 and the crampon 10 are connected with two ends of the metallic rod 9 separately, the connector 8 is connected with the other end of lead-in wire 7, the metallic rod 9 is circular and has smooth surface. The invention reduces impulse ...

Earthing mode of optical fiber compound overhead ground wire and earthing pilot arc clearance

Carbon steel surface anticorrosive cerium salt passivator and use method thereof

The invention discloses a carbon steel surface anticorrosive cerium salt passivator and a use method thereof. The preparation method of the carbon steel surface anticorrosive cerium salt passivator comprises the steps of: adding hydrogen peroxide with a volume percent of 3% and a mass percent of 30% in an aqueous solution of cerium nitrate with a solubility range of 500-5000ppm as an oxidant, then adjusting a pH value by using nitric acid with a mass percent of 65%, wherein the pH value ranges from 1 to 4; passivating for 2h by using a chemical immersion method at 30 DEG C, washing with water and then blow-drying by hot air, and drying. The carbon steel surface anticorrosive cerium salt passivator disclosed by the invention fundamentally eliminates the harms of hexavalent chromium and trivalent chromium elements in the traditional passivation solution to the environment and a human body, and is novel environment-friendly cerium salt passivation solution. Passivation process and equipment ...

800kV extra-high voltage direct-current non-contact multichannel distance measurement type electroscope

The invention provides a 800kV extra-high voltage direct-current non-contact multichannel distance measurement type electroscope comprising a signal amplification module, a signal processing module, an alarming module, an analog-to-digital conversion and data processing module and an LCD (liquid crystal display) display module, wherein the signal processing module comprises a rectification module, a filtering module, a signal acquisition module, a comparing control module and a distance measurement module, and the signal acquisition module comprises a stator and a rotor. The electricity testing value of the electroscope is the electric field value of the on-site working position, which effectively broadens the use range of the electroscope and improves the accuracy of the electroscope. The electroscope tests electricity by taking a distance value of a working position and a lead to be detected and a field intensity value correspondingly obtained according to the field intensity curve and ...

Extreme high voltage direct-current non-contact distance-measurement electricity-testing method

The invention relates to an extreme high voltage direct-current non-contact distance-measurement electricity-testing method which is divided into self-checking, data processing, comparison and acousto-optic alarming, and the method further comprises a distance-measurement and detecting phase, after self-checking is passed, detection is carried out; the detection adopts the induction principle of alternating induction method to test electricity, data acquisition of electric-field strength of the working position of an electroscope is carried out with a certain frequency, and the value after multiple tests is used as an alarming threshold value; and then distance measurement is carried out, the corresponding field intensity value is obtained from the distance value according to the field intensity and variation trend of a space electric field and is used as the electricity-testing value; the alarming threshold value and the electricity-testing value are compared, whether the tested object ...

Power transmission and transformation equipment unmanned aerial vehicle auxiliary maintenance operation method and management system

The invention discloses an unmanned aerial vehicle auxiliary maintenance operation method for power transmission and transformation equipment, and the method comprises the steps: classifying the auxiliary maintenance operation modes of an unmanned aerial vehicle, and setting the connection modes of the unmanned aerial vehicle and auxiliary maintenance equipment according to different types of operation modes; pre-planning a flight path of the unmanned aerial vehicle according to the auxiliary maintenance operation type of the unmanned aerial vehicle; according to the flight path and the connection mode of the unmanned aerial vehicle and the auxiliary maintenance equipment, when the unmanned aerial vehicle executes the auxiliary maintenance operation of the power transmission and transformation equipment, the auxiliary maintenance equipment is operated through remote control, or disconnection and connection of the auxiliary maintenance equipment are achieved, and the auxiliary maintenance ...

Low-temperature high-pressure hot wind deicing method for transformer substation

The invention relates to a low-temperature high-pressure hot wind deicing method for a transformer substation. Based on the principle of ice melting by heat power, low-temperature and high-pressure hot wind is adopted to deice. A piston type air compressor generates the low-temperature high-pressure hot wind; the surface of equipment covered with ice is heated through a hot wind tube to gradually melt an ice layer and weaken the adhesive force between the ice layer and the surface of the equipment covered with ice; and then, an ice coating can fall off entirely under the impact force of high-pressure gas, thus, the deicing effect is achieved. The temperature of the hot wind is adjustable from 1 DEG C to10 DEG C, and the wind pressure of the hot wind is adjustable from 1 MPa to 3 MPa. The invention can be widely applied to 110-500kV transformer substations and can conduct high-efficiency electrical deicing on ice coating of lots of equipment of transformer substations, such as insulators ...

1000kV extra-high voltage alternating-current non-contact multichannel distance measurement type electroscope

The invention provides a 1000kV extra-high voltage alternating-current non-contact multichannel distance measurement type electroscope comprising a signal amplification module, a signal processing module, an alarming module, an analog-to-digital conversion and data processing module and an LCD (liquid crystal display) display module, wherein the signal processing module comprises a rectification module, a filtering module, a signal acquisition module, a comparing control module and a distance measurement module, and the signal acquisition module comprises a parallel plate capacitor and a resistor R. The electroscope adopts the signal value of the horizontal channel and the vertical channel to obtain the electroscopic reference value and the alarm threshold in a ranging mode. The electroscope tests electricity by taking a distance value of a working position and a lead to be detected and a field intensity value correspondingly obtained according to the field intensity curve and the variation ...

Earth potential protective goggles

The invention provides earth potential protective goggles, which comprise a protective goggle frame, protective lenses and an earthing conductor, wherein the protective goggle frame is made of a conducting material or other insulating materials; the protective lenses are colorless transparent lenses, and can also be colored lenses; one end of the earthing conductor is connected with the protective goggle frame, while the other end is used for connecting protective clothing and is earthed through the protective clothing; and the protective lenses and the protective goggle frame are coated with conducive films, so that the whole protective goggles have good conductivity, and can well lead the ion flow gathered on the protective goggles into the earth through the earthing conductor to play a role in protecting the ion flow in the space. The protective goggles not only can protect against the ion flow on the eyes, but also protects the nose due to the goggle frame design aiming at the fact ...

Calibration device and method for airborne non-contact electroscope

The invention discloses a calibration device and method for an airborne non-contact electroscope. The device comprises a control circuit, a DC-AC adjustable inverter, a high-voltage electrode, a liquid crystal display, a wireless communication device and a power supply. The control circuit is connected with the DC-AC adjustable inverter and is used for controlling different voltage signals output by the DC-AC adjustable inverter; the DC-AC adjustable inverter is used for generating different voltage signals according to instructions of the control circuit; the high-voltage electrode is connected with the DC-AC adjustable inverter and is used for carrying out secondary boosting on the voltage signal generated by the DC-AC adjustable inverter and outputting a high-voltage signal; the liquid crystal display screen is connected with the control circuit and is used for displaying the high-voltage value output by the current calibration device; the wireless communication device is connected with ...

Extra high-voltage AC non-contact distance-measuring type electricity testing method

The invention provides an extra high-voltage AC non-contact distance-measuring type electricity testing method. The flow of the method consists of six stages: self test, testing, distance measurement, data processing, comparison and sound-light alarming; and in particular, the method comprises the following steps of: performing the self test and then performing a test, wherein in the test, a parallel plate capacitance method induction principle is adopted to test the electricity, data acquisition of electric field strength at a working position of an electricity tester is performed at a certain frequency and a valve obtained after multiple tests is used as an alarming threshold value; performing distance measurement, and obtaining a corresponding field strength value, used as an electricity testing value, from the obtained distance value according to a field strength curve and a change trend of the space electric field; comparing the alarming threshold value with the electricity testing ...

High-temperature low-pressure and low-temperature high-pressure combined hot wind deicing method for transformer substation

The invention discloses a high-temperature low-pressure and low-temperature high-pressure combined hot wind deicing method for a transformer substation, which belongs to the field of transformer substation maintenance. Based on the principle of deicing by heat power, high-temperature low-pressure hot wind blows ice coating on the surfaces of equipment or an insulator, so that the surface of the ice coating is heated uniformly and the ice coating can be melted quickly; meanwhile, since the expansion parameters on heating of the ice coating and the insulator are different, adhesive force between the ice coating and the insulator is weakened; and low-temperature high-pressure gas blows the ice coating to remove the ice coating entirely; and high-temperature low-pressure hot wind can evaporate captured overcooling water drops completely; the quick deicing effect is achieved by combining the high-temperature low-pressure hot wind and the low-temperature high-pressure hot wind. The high-temperature ...

Protective interval for live operation on 1000kV AC ultra high voltage line

The invention provides a protective clearance device which is used for the operation on a powered 1,000kV super-high voltage AC transmission line. The protective clearance device can well eliminate the limit that the current protective clearance device can not be used for 1,000kV AC transmission line and is characterized by safety, reliability and simple operation, thus being suitable for the super-high voltage AC transmission line. The protective clearance device used for the operation on the powered 1,000kV super-high voltage AC transmission line essentially consists of an adjustable ball clearance and a ground line retractor. The device adopts the clearance control way of remotely and automatically connecting metal ground lines and ensures that personnel can work on the ground under a power tower to remotely control a connecting device of the ground line retractor to retract the metal ground line even when the protective clearance is comparatively small with high risk; part of an insulating ...

1000kV extra-high-voltage alternating current electrostatic protective clothing and manufacturing method thereof

The invention relates to a 1000kV extra-high-voltage alternating current electrostatic protective clothing and a manufacturing method thereof. The clothing fabric is weaved into cloth by blended spinning of stainless steel fiber and textile fiber; wherein the stainless steel accounts for 10 percent to 30 percent and the ratio of polyester fiber and cotton fiber in the textile fiber is 1.86 : 1; the clothing spinning process comprises the following steps: a drawing and blending method is used for carrying out blended spinning to the stainless steel fiber and spinning fiber; the fabric texture selects 2<1> twill, and dyes by using dying process with a pad fix machine; and after being dyed, the cloth adopts fluoride finishing agent matched with advanced finishing process to carry out water proof processing to the cloth. The technical index basis of the manufacture is as follows: shielding efficiency of clothing is larger than 33dB, the resistance value of the clothing is smaller than 300 Omega ...

Extra-high voltage alternating current non-contact multi-channel electricity testing method

The invention provides an extra-high voltage alternating current non-contact multi-channel electricity testing method. The method comprises self-checking, pre-checking, multi-channel checking, comparison and alarming stages and the following steps of: after self-checking is passed and time delay is performed, performing detection by using a parallel plate capacitance sensing principle and double channels; acquiring data of a horizontal channel and a vertical channel at a certain frequency; comparing the electric intensity values of the working positions of tested objects acquired from the two channels; taking a larger current intensity value as an electricity testing value; putting the tested objects at lower positions to measure the current intensity values of the two passages by the same method; taking a larger current intensity value as an alarm threshold; testing electricity according to the field intensity curve and variation trend of a space electric field; and reflecting the magnitude ...

Protection method against ground potential ion current

The invention relates to a protection method against ground potential ion current, which is based on the principle of utilizing the electric conductivity of an ion current collection surface for leading the ion current gathered on the ion current collection surface into the ground through a ground conducting wire connected with a conductor, thereby playing the protection role against the spatial ion current. One end of the ground conducting wire is connected with the ion current collection surface, the other end is grounded, the ion current gathered on the ion current collection surface flows into the ground through the ground conducting wire by utilizing the conductivity of the ground conducting wire for leading the ion current collection surface to have the equal potential with the ground, thereby playing the protection role against the ion current. The ion current collection surface can be a metal conductor or an insulating material, when the ion current collection surface is the insulating ...

Shielding clothing for AC high voltage live line work

The invention relates to shielding clothing for alternating high voltage electrification operations, which is especially suitable to be used by the operation persons for electrification operation on electric devices with super high voltages of 1000kV and comprises a coat and trousers. The invention is characterized in that: the invention also comprises a cap, a shielding mask, a conductive torch and conductive socks, wherein the connected relation of the parts is that: the cap, coat and the trousers of the shielding clothing are connected into an integrated clothing, the shielding mask is connected with the cap by use of metal buttons, the conductive torch is connected to the sleeve mouth of the shielding clothing coat by use of a connection button, the conductive socks are connected to the trousers mouths of the integrated clothing; the cloth materials of the cap, coat, trousers, conductive glove and the conductive socks are made by doubler-twister process on the yarns which are blended ...

10 kV distribution line insulation tower head

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized in that: adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by gold tool and form an insulation tower head entity, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention, the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy to improve self-cleaning ability and the occurrence of pollution flashover can be basically and completely precluded, which is beneficial in charged operation, simple in operation process and improves the operation security.

electric potential transferring stick for AC super or ultra high voltage line live working

The invention is a hot-line job equipotential entering method of A.C. extra / ultrahigh voltage transmission line and the electric displacement rod. The method is characterized in that the operating staff wears extra or ultrahigh voltage A.C. hot-line job complete set barrier clothes and accesses the charged body by the insulated delivery vehicle after connecting the electric displacement rod andthe barrier clothes, when operating staff is 0.4-0.6m from the charged body, the operating staff use the special electric displacement rod to contact the charged body in order to transfer electric potential and enter the equipotential. The electric displacement rod comprises a lead-in wire 7, a connector 8, a metallic rod 9 and a crampon 10, wherein the lead-in wire 7 and the crampon 10 are connected with two ends of the metallic rod 9 separately, the connector 8 is connected with the other end of lead-in wire 7, the metallic rod 9 is circular and has smooth surface. The invention reduces impulse ...

Earthing mode of optical fiber compound overhead ground wire and earthing pilot arc clearance

Electroscopic device and electroscopic method of near field region of supervoltage or ultra-high voltage transmission line

The invention discloses an electroscopic device of a near field region of a supervoltage or ultra-high voltage transmission line. The electroscopic device comprises a signal acquisition module, a signal processing module, a self-checking circuit and an alarm module, wherein an output end of the self-checking circuit is connected with an input end of the signal acquisition module; an output end of the signal acquisition module is connected with an input end of the signal processing module; and the signal processing module is connected with the alarm module. The invention discloses an electroscopic method simultaneously. Electric field information near the line is acquired on a tower and compared with a threshold to judge whether the electroscopic line is live. Therefore, the problems that a contact electroscope is low in applicable voltage grade, and a non-contact electroscope cannot be completely applicable to electroscopy of the double-circuit line on the same tower are effectively solved ...

1000kV extra-high voltage AC non-contact type electricity checking method and apparatus

The invention provides a 1000kV ultrahigh voltage alternating current non-contact-type electroscopy and an electroscope thereof, the hardware part of the electroscope consists of a signal acquisition module, a signal amplification module, a signal processing module, an analog-to-digital conversion and data processing module and an alarm module, the software part thereof is divided into five stages comprising self-check, pre-check, checkup, comparison and alarm; after the self-check is passed and time delay of 3 seconds elapses, a value, which is obtained by performing a data acquisition in 10KHz frequency on the electric field intensity of the working location, is regarded as a reference value for the electroscopy, the inventive reference value is an electric field value of the on-site working location, which effectively enhances the use range and accuracy of the electroscope; the invention implements the electroscopy in terms of field intensity curves of space electric fields and gives ...

Ground potential protective mask

The invention provides a ground potential protective mask, materials of the protective mask have electrical conductivity, two ends are connected with two hanging belts, and a ground conducting wire is led out from the junction of the hanging belts and the mask; and one end of the ground conducting wire is connected with the mask, and the other end is used for connecting a protective clothing. Fabric of the protective mask is the fabric formed by blending and interweaving stainless steel fibers and textile fibers, the weight ratio of polyester fibers to cotton fibers is 1.86:1 in textile fibers, the blending of the stainless steel fibers and the textile fibers is realized by adopting the drawing and blending method of the spinning process, and a fabric texture selects 2<1> twill; and the stainless steel fibers account for 10%-30% of the total weight of the cloth by weight percentage, and the resistance of the fabric is 50 omega-200 omega. The ground potential protective mask utilizes the ...

Anti-corrosion grounding device for electric transmission line tower and manufacturing method thereof

An anti-corrosion grounding device for an electric transmission line tower is of a closed loop shape or a polygonal shape composed of a grounding body, a linear connector and a T-shaped connector. A port of the T-shaped connector in the perpendicular direction is connected with a grounding lead connecting board through a downlead of the grounding body. The grounding body, the linear connector and the T-shaped connector are connected in a pressed mode through hydraulic pressure so that the grounding body, the linear connector and the T-shaped connector can be tightly connected. The grounding body of the grounding device is made of carbon steel coated with stainless steel. According to the anti-corrosion grounding device for the electric transmission line tower, the connecting portions are flat, smooth and even, connection is reliable, the contact performance and the sealing performance are good, and corrosion can be slowed down.

Method and system for monitoring unmanned aerial vehicle

The invention discloses a method and system for monitoring an unmanned aerial vehicle based on a 5G communication transmission module. The method comprises the steps that a remote monitoring center establishes connection with a ground control system through a 5G communication transmission module; testing the 5G communication transmission module to obtain a test result; the remote monitoring center obtains video image data collected by the unmanned aerial vehicle through a 5G communication transmission module according to the test result; and the remote monitoring center monitors the video image data. The method is realized by returning the video of the inspection site of the unmanned aerial vehicle in real time, so that the real-time performance of remote monitoring and the interactivity with the inspection site are improved, and a guarantee means is provided for the operation safety of the unmanned aerial vehicle.

Unmanned aerial vehicle inspection signal receiver with protection structure

The invention provides an unmanned aerial vehicle inspection signal receiver with a protection structure. The unmanned aerial vehicle inspection signal receiver comprises an unmanned aerial vehicle inspection signal receiving box; the four corners of the bottom of the unmanned aerial vehicle inspection signal receiving box are each provided with an adjustable buffer supporting assembly. The unmanned aerial vehicle inspection signal receiving box is provided with an antenna interface for connecting an antenna; and an anti-falling component is arranged at the antenna interface on the unmanned aerial vehicle inspection signal receiving box. The unmanned aerial vehicle inspection signal receiving box is buffered and supported through the adjustable buffering and supporting assembly, so that jolt and vibration of the unmanned aerial vehicle inspection signal receiving box are buffered, the buffering effect is improved, namely jolt borne by the unmanned aerial vehicle inspection signal receiving ...

Method for testing wind loading rating of unmanned helicopter inspection system for inspecting overhead transmission lines

The invention provides a method for testing the wind loading rating of an unmanned helicopter inspection system for inspecting overhead transmission lines. The method includes the following steps: setting wind field environment of a test zone; adjusting the wind speed and testing the unmanned helicopter; adjusting the wind speed acceleration and testing the unmanned helicopter; testing and evaluating the wind loading rating of the unmanned helicopter inspection system. The method for testing the wind loading rating of the unmanned helicopter inspection system for inspecting overhead transmission lines can be used for testing the wind loading rating of the unmanned helicopter on site and ensure the safety of the unmanned helicopter inspection system and the body equipment of the transmission lines.

Electricity checking system and method based on unmanned aerial vehicle

The invention provides an electricity checking system and method based on an unmanned aerial vehicle. The electricity checking system based on the unmanned aerial vehicle comprises an analogue signal processing module, a digital signal processing module, a storage module, a communication module and a power supply module, wherein the analogue signal processing module and the communication module are in one-way connection with the digital signal processing module through I2C buses respectively, the digital signal processing module is in two-way connection with the communication module through an SPI bus, and the power supply module supplies power to the analogue signal processing module, the digital signal processing module, the storage module and the communication module. According to the electricity checking system and method based on the unmanned aerial vehicle, the electricity checking system is carried by the unmanned aerial vehicle, line information is acquired at a short range, and ...

Extra-high voltage direct current non-contact multi-channel electricity checking method

The invention provides an extra-high voltage direct current non-contact multi-channel electricity checking method comprising five steps of self-checking, prechecking, multi-channel detection, comparison and alarming; data acquisition of a horizontal channel and a vertical channel is carried out according to a certain frequency through time delay after the self-checking passes; the electric field intensity values of the work positions acquired in the two channels are compared, and the larger value serves as a reference value of electricity checking; the electricity checking is performed according to the field intensity curve and variation trend of the space electric field; the size of the electric field is reflected by acoustic signals and optical signals of alarming, thus effectively eliminating the interference of adjacent electrified equipment, solving the difficulties that the electricity checking has poor repetitiveness and low accuracy due to the interference of the electrified body ...

Composite insulator contamination degree non-contact detection method

The invention provides a composite insulator contamination degree non-contact detection method. The composite insulator contamination degree non-contact detection method comprises the following steps: I. acquiring information of a composite insulator and extracting a target area; II. determining the contamination levels of target objects in a target area correspondingly; and III. determining the contamination types of the target objects according to the contamination level, wherein each contamination type corresponds to one reference factor, and determining the contamination level of the composite insulator through the criterion requiring the reference factors. According to the method, the information can be acquired conveniently, the contamination level calculating mode is reasonable, and the composite insulator contamination degree non-contact detection method is wide in application range, low in external disturbance and low in cost; the composite insulator is not required to be contacted ...

High-temperature low-pressure and low-temperature high-pressure combined hot wind deicing method for transformer substation

The invention discloses a high-temperature low-pressure and low-temperature high-pressure combined hot wind deicing method for a transformer substation, which belongs to the field of transformer substation maintenance. Based on the principle of deicing by heat power, high-temperature low-pressure hot wind blows ice coating on the surfaces of equipment or an insulator, so that the surface of the ice coating is heated uniformly and the ice coating can be melted quickly; meanwhile, since the expansion parameters on heating of the ice coating and the insulator are different, adhesive force between the ice coating and the insulator is weakened; and low-temperature high-pressure gas blows the ice coating to remove the ice coating entirely; and high-temperature low-pressure hot wind can evaporate captured overcooling water drops completely; the quick deicing effect is achieved by combining the high-temperature low-pressure hot wind and the low-temperature high-pressure hot wind. The high-temperature ...

Electric power inspection unmanned aerial vehicle obstacle avoidance method based on millimeter wave radar and binocular vision

The invention discloses an electric power inspection unmanned aerial vehicle obstacle avoidance method and device based on millimeter wave radar and binocular vision. The method comprises the following steps: detecting an obstacle in front of a flight route of an unmanned aerial vehicle through a millimeter wave radar, analyzing radar data, taking the unmanned aerial vehicle as an original point, completing preliminary on-site three-dimensional scene modeling, determining a target initial value of the obstacle in combination with pitch attitude parameters of the unmanned aerial vehicle, and importing the target initial value of the obstacle into a binocular camera; target attributes of the obstacle are recognized through binocular vision stereo matching, the position and distance of the obstacle are calculated, and the relative speed of the unmanned aerial vehicle and the obstacle is calculated; and reducing the dimension of the obstacle from a three-dimensional scene to a two-dimensional ...

Direct current poor insulator detection method and its detection electrode and apparatus

The invention relates to a direct current faulty insulator detection method, detection electrodes and a device thereof. The device comprises a measuring device part and a data receiving device, wherein one direct current electrode of the measuring device part is provided with an internal measuring circuit; an infrared signal transmission channel is provided between the data receiving device and the internal measuring circuit of the direct current electrode; the measuring device part adopts connectors, respectively fixes two direct current electrodes on the connectors and keeps a space between the two direct current electrodes; the connectors are respectively mounted at two ends of an insulation support and are mounted with probes; the direct current electrode with an internal measuring circuit adopts a hollow cylinder aluminum box as shell whose bottom center near the direct current electrodes is provided with a round hole mounted with a movable metal blade and a fixed metal blade. The ...

1000kV extra-high voltage AC non-contact type electricity checking method and apparatus

The invention provides a 1000kV ultrahigh voltage alternating current non-contact-type electroscopy and an electroscope thereof, the hardware part of the electroscope consists of a signal acquisition module, a signal amplification module, a signal processing module, an analog-to-digital conversion and data processing module and an alarm module, the software part thereof is divided into five stages comprising self-check, pre-check, checkup, comparison and alarm; after the self-check is passed and time delay of 3 seconds elapses, a value, which is obtained by performing a data acquisition in 10KHz frequency on the electric field intensity of the working location, is regarded as a reference value for the electroscopy, the inventive reference value is an electric field value of the on-site working location, which effectively enhances the use range and accuracy of the electroscope; the invention implements the electroscopy in terms of field intensity curves of space electric fields and gives ...

1000kV extra-high voltage alternating-current non-contact multichannel distance measurement type electroscope

The invention provides a 1000kV extra-high voltage alternating-current non-contact multichannel distance measurement type electroscope comprising a signal amplification module, a signal processing module, an alarming module, an analog-to-digital conversion and data processing module and an LCD (liquid crystal display) display module, wherein the signal processing module comprises a rectification module, a filtering module, a signal acquisition module, a comparing control module and a distance measurement module, and the signal acquisition module comprises a parallel plate capacitor and a resistor R. The electroscope tests electricity by taking a distance value of a working position and a lead to be detected and a field intensity value correspondingly obtained according to the field intensity curve and the variation trend of a space electric field as alarming threshold values, and whether the lead to be detected is charged or not is reflected according to acoustic and light signals of alarming ...

Device for detecting defects of insulating tool for hot-line work

The invention discloses a device for detecting defects of an insulating tool for hot-line work. The device comprises a sensor, a control module, a defect detection module for interlayer detection and detection along layers, and a stepping motor. An output end of the defect detection module is connected to an input end of the control module. An output end of the sensor is connected to an input end of the control module. The output end of the defect detection module is connected to the stepping motor. The device can realize high-efficiency insulating tool safety detection.

High-temperature low-pressure hot wind deicing method for transformer substation

The invention discloses a high-temperature low-pressure hot wind deicing method for a transformer substation. Based on the principle of deicing by heat power, high-temperature and low-pressure hot wind is adopted to deice. A high-power hot wind fan is used for generating high-temperature low-pressure hot wind to heat the ice coating on surfaces of equipment or devices by a wind guide tube, so that the ice coating can fall off, and supercooling water drops captured by equipment can be evaporated completely to prevent the water drops from icing. The hot wind temperature of the outlet of the wind guide tube is adjustable from 120 DEG C to 150 DEG C, the wind speed is adjustable from 1m/s to 30 m/s, and the diameter of the outlet of the wind guide tube is adjustable from 200 mm to 230 mm. The invention can be widely applied to 110-500kV transformer substations, and can conduct high-efficiency electrical deicing on ice coating of lots of equipment of transformer substations, such as insulators ...

1000KV alternating-current ultrahigh voltage transmission lines earth fault positioning technology and apparatus

The invention relates to ground fault positioning technology and a device of 1000-kV AC ultrahigh-voltage power transmission line. The ground fault positioning technology comprises following steps of: determining the direction and the magnitude of currents flowing through lightning wires on both ends of an iron tower by a measurement device, collecting the magnitude signals of the currents flowing though the lightning wires on both ends of the iron tower by two sensors, and comparing the current directions; positioning the fault points by short-circuit current superposition, and determining the defective iron tower by comparing the magnitudes and the phase difference of the currents flowing through the lightning wires on both ends of the iron tower when a short-circuit fault occurs in the AC ultrahigh-voltage power transmission line; and comparing the signals collected by the sensor by the measurement device, determining the iron tower is the defective one, and driving an electromagnetic ...

Multi-parameter integrated electricity testing system based on unmanned aerial vehicle and corresponding method thereof

The invention discloses a multi-parameter integrated electricity testing system based on an unmanned aerial vehicle and a corresponding method thereof, and belongs to the technical field of power grid operation maintenance and overhaul. A multi-parameter and multi-principle integrated electricity testing system is realized through detection of a space electric field near to-be-tested power equipment and equipotential measurement of an electrified state of the space electric field. According to the characteristics and operation requirements of each stage of space electric field detection and charged state equipotential measurement, an electricity testing process and method suitable for a full scene are provided, the charged state of to-be-tested power equipment is accurately judged through data intercommunication and combinational logic judgment of different stages, full-scene application expansion of an electricity testing system is achieved, and the working efficiency is improved. The ...

Protective interval for live operation on 1000kV AC ultra high voltage line

The invention provides a protective clearance device which is used for the operation on a powered 1,000kV super-high voltage AC transmission line. The protective clearance device can well eliminate the limit that the current protective clearance device can not be used for 1,000kV AC transmission line and is characterized by safety, reliability and simple operation, thus being suitable for the super-high voltage AC transmission line. The protective clearance device used for the operation on the powered 1,000kV super-high voltage AC transmission line essentially consists of an adjustable ball clearance and a ground line retractor. The device adopts the clearance control way of remotely and automatically connecting metal ground lines and ensures that personnel can work on the ground under a power tower to remotely control a connecting device of the ground line retractor to retract the metal ground line even when the protective clearance is comparatively small with high risk; part of an insulating ...

Climbing-free ground wire hanging and dismounting device, system and method

The invention provides a climbing-free ground wire hanging and dismounting device, system and method. The device comprises a hanging and taking mechanism, a clamping and taking mechanism, a locking mechanism, a ground wire clamping hook and a traction rope. The hanging mechanism is arranged on the clamping mechanism; the clamping mechanism is connected with the locking mechanism so as to be hung on a to-be-hung wire; the traction rope is arranged on the locking mechanism in a sliding mode and connected with the ground wire clamping hook, the traction rope drives the ground wire clamping hook to be inserted into the locking mechanism, the locking mechanism locks the ground wire clamping hook, and the clamping mechanism further clamps a wire to be hooked after the ground wire clamping hook is locked; the ground wire clamping hook is connected with the ground wire so that the ground wire can be connected with the wire to be hooked. According to the invention, a worker does not need to climb ...