267 results about "High voltage insulators" patented technology

The contamination level estimation method for high voltage insulators collects samples of naturally contaminated insulators and builds an image data set for the collected insulators. Flashover voltages of several insulators samples are measured. ESDD levels of the collected insulators are estimated. Images are input to image processing algorithms to extract representative features. The images are segmented. Transforming the image from RGB color space into grayscale model excludes the background from the image. Subsequently, the segmented images are transferred back to RGB color space model using matrix manipulation. Since contaminants on the insulator surface affect the color of the insulator, the segmented image is transformed from RGB to HSV color space which is used for extracting statistical and linear algebraic features from the hue image. A trained artificial neural network correlates the extracted features to the contamination levels enabling testing of other contaminated insulators.

A technology for spraying a dirt sparkle-resistant film layer on the surface of high-voltage insulator includes such steps as fixing several rotary supporters on the edge of a rotary disc, fixing an insulator to one rotary supporter, and driving said supporter to rotate by drive mechanism when the high-voltage insulator comes in a spraying room while spraying paint from high-pressure spray gun onto the surface of the insulator. Its apparatus is also disclosed.

The present invention relates to phase separated siloxane-hydrocarbon copolymer surfaces which are hard and hydrophobic and can be superhydrophobic by the addition of nanoparticles. More specifically the siloxane oligomer/polymer precursor is terminated with (a) chemically reactive group(s). The bond between the siloxane moiety and the hydrocarbon functional moiety is a Si atom directly bonded to a carbon atom. It is applied (for example) to the entire surface of a fibre reinforced and void-free polymer concrete core with 60 to 88% polymeric and inorganic fillers for application as a high voltage insulator. The product has high mechanical strength, impact resistance and good electrical insulation properties. The coating provides good UV resistance, hydrophobicity and a hard self-cleaning surface for use as outdoor high voltage electrical insulator in areas of high pollution with low leakage currents when energised and can also be applied to other products.

The invention relates to a high-voltage insulator surface electrified cleaning agent which comprises the following components in percentage by weight: 75-85% of detergent builder, 5-10% of nonionic surfactant, 1-5% of penetrating agent, 0.5-10% of organic solvent and 0.5-1% of protective agent, wherein the detergent builder is trichlorotrifluoroethane, and the protective agent is silicone oil. The cleaning agent has small surface tension, strong foul cleaning capacity on a high-voltage insulator, good permeability, insulation performance, high-voltage resistance, and good stability, is easy to volatilize and not easy to burn and non-toxic.

An inspection apparatus for inspecting high voltage insulators is disclosed. The inspection apparatus includes a first platform having first and second linkages, at least one outer gripping mechanism having first and second arms extending outwardly from the first platform, a second slidable platform adapted to slide along the first and second linkages, and at least one inner gripping mechanism having third and fourth arms extending outwardly from the second slidable platform. The outer and inner gripping mechanisms are adapted to move between an open position where the insulator is received by the outer and inner gripping mechanisms and a closed position where the outer and inner gripping mechanisms engage the insulator.

An extraction electrode manipulator system, comprising an ion source, a suppression electrode and a ground electrode, wherein the two electrode are supported by coaxially arranged two water cooled support tubes. A high voltage insulator ring is located on the other end of the coaxial support tube system to act as a mechanical support of the inner tube and also as a high voltage vacuum feedthrough to prevent sputtering and coating of the insulating surface.

The invention relates to a non-contact measurement method for the surface discharge pulse peak of a high-voltage insulator. The non-contact measurement method comprises the steps of firstly processing an ultraviolet image, which is shot by an ultraviolet imaging instrument, of an insulator string, extracting the maximum horizontal light spot diameter D of the ultraviolet image, then modifying the maximum horizontal light spot diameter D to a light spot diameter Dd0 at a certain unified shooting distance d0 through normalization processing, and finally substituting the light spot diameter Dd0 into a discharge regression equation I=K.Dd0+L so as to acquire the discharge pulse peak I, wherein K and L are constants. According to the invention, the normalized maximum horizontal light spot diameter is taken as a characteristic value so as to carry out quantitative analysis on the surface discharge pulse peak of the high-voltage insulator. The method is not only applicable to a single insulator, but also applicable to an insulator string. The method eliminates influences imposed on a measurement result by the shooting distance, can provide reliable information for security state assessment of the insulator and flashover early warning, and ensures an electric power system to operate safely and stably.

The invention discloses a determination method for filthy components of a high-voltage insulator. The determination method comprises the specific steps: A, pre-treating a sample; B, qualitatively and semi-quantitatively analyzing, namely determining varieties and corresponding contents of elements in the sample by using an X-ray photoelectron spectroscopy, and determining chemical group varieties in the sample by using a fourier transform infrared spectrometer; and C, quantitatively analyzing, namely carrying out an ICP (Inductively Coupled Plasma) test to determine the content of cations in the sample and carrying out an IC (Integrated Circuit) test to determine the content of anions in the sample. According to the determination method for the filthy components of the high-voltage insulator, the filthy components of the high-voltage insulator can be qualitatively and quantitatively analyzed by organically combining an X-ray photoelectron spectroscopy (XPS) test, a fourier transform infrared spectrometer (FTIR) test, the ICP test and an IC test result; the filthy components of the high-voltage insulator can be accurately determined so as to be good for preventing a pollution flashover accident.

The invention provides a method for measuring equivalent salt deposit density of a high-voltage insulator. The method comprises the following steps of uniformly dividing the surface of a high-voltage insulator needing to be detected into multiple regions, selecting any measurement point in each one of the multiple regions, eliminating hydrophobicity of the measurement points, spraying a water film on the measurement points without hydrophobicity, measuring local surface conductivity of the measurement points, calculating average local surface conductivity by the local surface conductivity of the measurement points, and calculating equivalent salt deposit density of the high-voltage insulator by the average local surface conductivity. The method realizes measurement of equivalent salt deposit density of a high-voltage insulator having a strong-hydrophobicity surface without destroy on an insulator dirt layer structure. Through the method, a researcher can carry out long-term measurement of the same measurement points. The method is convenient for summarization of a dirt accumulation law, avoids errors caused by other methods in transport and improves measurement accuracy.

The invention discloses a high-voltage insulator online monitoring system, and belongs to the technical filed of high-voltage protection electric appliances. The system comprises a data acquisition module, a lightening protection module, a microprocessor, a data transmitting module and a GPS module. The monitoring system wirelessly transmits signals to a monitoring center via the data transmitting module. The data acquisition module is used for acquiring insulator current, onsite temperature, atmosphere humidity and atmosphere flow velocity data and is connected with the lightening protection module. The data acquisition module is connected with the microprocessor to transmit the data to the microprocessor. The GPS module is connected with the microprocessor and used for positioning the location of each insulator to transmit the location to the microprocessor. The microprocessor transmits the acquired insulator data to the monitoring center via the data transmitting module. Problems that insulator online faults are various, the working system is instable and prediction results are difficult to notify timely can be solved so that the high-voltage insulator online monitoring system has advantages that the data signals are collected and analyzed timely, the early warning phenomenon is discovered and alarm is performed timely and fault early warning is realized.

The high-voltage insulator for securing a high-voltage conductor in an electrical plant or in an electric power line comprises an insulating core, the first end of which is used for mechanically connecting to a high voltage conductor and/or to its coupling means, the second end being provided with a metal fastening element for fixing the insulator to a support, such as a tower. In order to impart lightning protection properties to the insulator, it is additionally provided with a multi-electrode system consisting of m electrodes which are mechanically attached to the insulating core and are arranged between the ends thereof. The electrodes are disposed in such a way as to support a formation of an electric discharge between the adjacent electrodes, between the electrode adjacent to the first end of the insulating core and to the high voltage conductor or to said coupling means, and between the electrode adjacent to the second end of the insulating core and the metal fastening element attached to the tower. The insulator is provided with means for compensating the reduction of the insulator creepage distance caused by the multi-electrode system. The electric power line using the insulator of this type does not require any lightning arresters.

The invention relates to a titaniferous composition, a method for forming a nano particle film on a ceramic or glass surface from the titaniferous composition and application of the titaniferous composition. The method comprises the following steps of: firstly adding 108 parts of distilled water into a reaction kettle, then adding 0.01-30 parts of template agent, adding a mixed liquid comprising a metal oxide precursor prepared by mixing 0.01-10 parts of metal inorganic salt or organic alkoxide with 0.1-40 parts of one or more than two fatty alcohols and 0.01-20 parts of nano metal, and uniformly stirring the mixture to obtain the titaniferous composition. The titaniferous composition can form a titanium dioxide nano particle film on the ceramic or glass surface through spray coating, brush coating and the like. The nano particle film has excellent antibacterial self-cleaning property and also has the function of resisting pollution flashover when being applied to high voltage ceramic or glass insulators. The titaniferous composition can be used for protecting the health of human and improving life quality in daily life, the pollution flashover problem of high voltage insulators can be effectively solved, and the titaniferous composition has wide economic benefit and social benefit.

The invention relates to a gas-liquid mixed sandblasting insulation method for cleaning a high-voltage electrified insulator, which can effectively solve the problem of cleaning the high-voltage electrified insulator. In the method, gases and a cleaning agent are combined to clean the high-voltage insulator, and the method comprises the following steps of: preparing a high-voltage insulating cleaning agent; preparing a cleaning solution by mixing the high-voltage insulating cleaning agent and solid epoxy resin sand in a weight ratio of 40:1, fully uniformly mixing the cleaning solution in a mixer, and conveying the cleaning solution to a spray gun through an infusion pump via an infusion pipe; and delivering air to the spray gun through an air compressor via an air filter, spraying the cleaning solution to the high-voltage insulator at a speed of over 100m/s under dual action of the air compressor and the infusion pump so as to clean the high-voltage insulator. The method has the advantages of advancement, simple equipment, good cleaning effect, high speed, safe operation and low labor intensity, and is an innovation for cleaning the electrified insulator.

A corona ignition assembly comprising a plurality of different insulators disposed between an ignition coil assembly and firing end assembly is provided. A high voltage center electrode extends longitudinally between an igniter central electrode and the ignition coil assembly. A high voltage insulator formed of a fluoropolymer surrounds the high voltage center electrode, and a firing end insulator firing of alumina surrounds the igniter central electrode. A sleeve formed of a semi-conductive and complaint material, such as silicone rubber with conductive filler, is disposed radially between the electrodes and adjacent insulators. The sleeve fills air gaps and minimizes the peak electric field within the corona igniter assembly. The sleeve is able to prevent unwanted corona discharge, and thus extends the life of the materials and directs energy to the firing end.

The invention provides an electronic gun device for high-voltage gas discharge. The electronic gun device comprises a cathode insulator, a high-voltage insulator, a sealing top cover, a first section of gun shell, an insulating trap, an anode, a second section of gun shell, a first focusing coil, a second focusing coil and a deflection scanning coil, wherein the cathode insulator, the high-voltage insulator, the sealing top cover, the insulating trap and the anode are positioned in the first section of gun shell; the first focusing coil, the second focusing coil and the deflection scanning coil are positioned in the second section of gun shell; the cathode insulator, the high-voltage insulator, the insulating trap, the anode, the first focusing coil, the second focusing coil and the deflection scanning coil are coaxial and are sequentially distributed along the axis from top to bottom. According to the electronic gun device for the high-voltage discharge, the cathode life can be greatly prolonged, which is conductive to expanding the application field of a cold cathode electron beam machining technology.

The invention discloses an online monitoring system and an online monitoring method of a high-voltage insulator filthy state. A leakage current collecting unit transmits collected leakage current data to a data sending module. An induction coil transmits an induced current from a high-voltage power transmission line to a power supply module, and the power supply module supplies power sources to the data sending module and the leakage current collecting unit. The data sending module sends data collected by a current sensor to a wireless data concentrator, and the wireless data concentrator transmits collected data to a background server through a global system for mobile communications (GSM) data public network or a general packet radio service (GPRS) data public network. The online monitoring system and the online monitoring method of the high-voltage insulator filthy state have the advantages of supplying stable and reliable electric energy to a signal collection terminal of the online monitoring system of the high-voltage insulator filthy state through a self-induced power supply device, and bringing possibilities for the system to achieve functions of real-time detection, fault diagnosis, early warning and the like of monitoring the high-voltage insulator filthy state.

A cable for high-voltage electronic devices including an inner semiconductive layer, a high-voltage insulator, an outer semiconductive layer, a shielding layer, and a sheath which are provided on an outer periphery of a cable core part in the order mentioned, wherein the high-voltage insulator is made of an insulating composition whose temperature dependence parameter D_R found by the following expression is 1.0 or less: D_R=log R_{23° C.}−log R_{90° C.} (where R_{23° C.} is volume resistivity (Ω·cm) at 23° C. and R_{90° C.} is volume resistivity (Ω·cm) at 90° C.). The cable for high-voltage electronic devices is small in diameter and has an excellent withstand voltage characteristic.

The invention provides an anti-pollution-flashover fluorocarbon coating. The anti-pollution-flashover fluorocarbon coating is a primer-free coating and mainly comprises the following components in percentage by weight: 30-70% of fluorocarbon resin, 35-45% of a self-prepared mixed solvent, 10-30% of pigment, 1-5% of a coupling agent, 0.03-2% of auxiliaries, 1-10% of a curing agent, and 0.03-0.2% of a catalyst. According to the anti-pollution-flashover fluorocarbon coating, by researching a coupling agent addition process, a modified nanofiller addition process and a defoaming process, the hydrophobic property of the coating is increased; the external examination electric insulation performance of the modified coating can satisfy anti-pollution-flashover requirements; and the anti-pollution-flashover fluorocarbon coating has good anti-pollution-flashover property and can be applied to pollution-flashover prevention of high-voltage insulators of an electric transmission and distribution circuit.

A high voltage insulator and radiation shield made of barium sulfate composite having a polymer matrix and barium sulfate therein. The device may be made by casting. By means of use of various combinations of barium sulfate, other radiologically resistant materials, polymers, and third components, the physical, radiological and electrical properties of the finished products may be tailored to achieve desired properties. In addition, the invention teaches that radiation shielding, insulators, and combined radiation shield/insulators may be fashioned from the composite. A wide range of production methods may be employed, including but not limited to liquid resin casting.

The invention belongs to the technical field of high-voltage insulator experiments and particularly relates to a temperature and humidity combined control system for an artificial pollution test room. The system comprises a humidifier, a heater and a ventilation fan and further comprises a temperature and humidity sensor, an industrial personal computer and a data acquisition card. The humidifier, the heater, the ventilation fan and the temperature and humidity sensor are connected with the data acquisition card respectively, and the data acquisition card is connected with the industrial personal computer. Temperature and humidity control target values of a spray room are set through program software of the industrial personal computer, the data acquisition card acquires temperature and humidity value information in an existing state in the spray room through the temperature and humidity sensor, the temperature and humidity value information is input in the industrial personal computer to be compared with the set temperature and humidity control target values and judged, a corresponding working condition mode is determined, the heater, the humidifier and the ventilation fan are controlled respectively, and the temperature and humidity combined accurate control is achieved. An accurate test environment is provided for study on characteristics of leakage currents of the surfaces of insulators, such as leakage current maximum values, pulse peak values, the pulse discharge capacity and leakage current high-frequency components.

The invention relates to a live-line detection robot for an extra-high voltage DC power transmission line, and the robot comprises a case, a controller, a left detection device, and a right detection device. The interior of the case is provided with the controller, and two ends of the case are respectively provided with a left shaft hole and a right shaft hole. The interior of the left shaft hole and the interior of the right shaft hole are respectively provided with the left detection device and the right detection device, wherein the left and right detection devices can rotate freely. The left and right detection devices respectively comprise a rotating motor, a detection arm, and a movable clamp mechanism, wherein the output shaft of each rotating motor is fixedly connected with the lower end of the corresponding detection arm, and the upper part of each detection arm is provided with the corresponding movable clamp mechanism. The robot achieves the convenient, safe, practical and reliable online detection and intelligent detection of a high-voltage insulator.

A time division multiplexed optical voltage measuring system includes an optical voltage sensing system module including, (i) a plurality of optical sensors where each sensor is responsive to an input interrogation light wave, and (ii) one or more optical outputs affected by sensed electric field thereat. The optical voltage sensing system module includes an optical circuit arrangement having (i) an input for receiving a module specific pulsed light wave derived from a primary pulsed light wave from a remote light source, and (ii) arranged such that each of the plurality of optical sensors receives an interrogation pulsed light wave. The optical circuit arrangement of the optical voltage sensing system module further includes at least one optical wave combiner for combining like-kind of outputs from all of the plurality of optical sensors. The optical circuit is arranged such that the pulsed light waves from the outputs of different optical sensors arrive at the optical wave combiner at differing times. In turn, the output of the combiner is passed to a detector and signal processor at a remote location for signal processing, and providing a measurement of the voltage intended to be measured. In a specific embodiment, each voltage sensing modules is arranged integral with a high voltage insulator column of a multi-phase power line system.