The present invention provides a cable aging experimental device. The device comprises: a temperature control box, a liquid tank and a pressurizing assembly. The temperature control box has through holes on both sides, an observation window is arranged on the back side, and a test bench is arranged in the temperature control box; the liquid tank is arranged on the test bench; the test sample passes through the through holes on both sides of the temperature control box and the liquid tank and at least partially disposed in the liquid tank; and the pressurizing assembly is introduced from the top of the temperature control box, and is connected with the experimental sample to apply a voltage on the experimental sample. According to the technical scheme of the present invention, the accelerated aging experiment under the influence of electricity, heat, water chemicals or other comprehensive factors on the cable sample section, the cable insulation slice and other insulation samples, and is closer to the actual working environment of the cable; and the problem that the cable aging experimental device in the prior art cannot reflect the aging condition of the cable insulation under theinfluence of various factors is solved.

Cable aging experimental device

The invention discloses an insulation material aging test device based on an electrothermal coupling field, which is mainly composed of an experimental device, an electric tree observation device, a pulse voltage device, and a terminal.Theinsulation material aging test device based on the electrothermal coupling field is characterized in that the terminal is provided with a ScreenRuler length measuring platform, the electric tree observation device observes and records sample change data in the experimental device and transmits the data to the terminal, the ScreenRuler length measuring platform in the terminal performs electrical tree length measurement so as to evaluate the aging degree of an insulating material.

Insulation material aging test device based on electrothermal coupling field

The invention discloses a low-temperature electric branch aging experiment device based on direct current superposition harmonic waves. The low-temperature electric branch aging experiment device mainly comprises an experiment device, an electric branch observation device, a direct current superposition harmonic voltage device and a terminal, the device is characterized in that a Screen Ruler length measuring platform is arranged in the terminal, the electric branch observation device is used for observing and recording sample change data in the experiment device, and transmitting the data tothe terminal, the Screen Ruler length measuring platform in the terminal is used for carrying out electric branch length measurement, the electric branch observation device and the direct current superposition harmonic voltage experiment device in a low-temperature environment are provided, so that the aging degree of the insulating material for a high-temperature superconducting direct-current voltage cable can be effectively evaluated by using the method for measuring the length of the electric branches.

Low-temperature electric branch aging experiment device based on direct current superposition harmonic waves

The invention discloses a heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member, which comprises the following raw materials by weight: 50-80 parts of modified ethylene propylene diene monomer, 80-120 parts of a fluorosilicone rubber, 30-60 parts of a polyvinylidene fluoride resin, 5-10 parts of a vulcanizing agent, 0.2-0.5 part of an accelerant, 0.5-2.5 parts of an active agent, 3-5 parts of an inorganic filler, and 1-3 parts of an additive. According to the invention, the heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member has advantages of good heat resistance, good ozone resistance, small permanent compression deformation and good machinability, and can satisfy the use occasions under severe conditions. The invention furtherdiscloses a preparation method of the heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member, wherein the vulcanization speed is high in the preparation process, the scorching time is long, and the production process is safe.

Heat-resistant, ozone-resistant and pressure-change-resistant rubber sealing member and preparation method thereof

The invention discloses a low-temperature electric tree aging assessment method based on direct-current harmonic wave superposition. The insulating state of an insulating material for a high-temperature super-conduction direct-current voltage cable is effectively assessed by an electric tree length method. The method comprises the following steps: 1) preparation of an epoxy resin testing sample based on a needle-plate electrode: connecting a needle electrode to a high voltage, grounding a plate electrode, placing the sample on a plate electrode, and fixing the sample between two transparent glass sheets by adopting a needle-plate electrode system; 2) carrying out an experiment by using an electric tree experiment system device in a low temperature environment; 3) observing the internal electric tree aging condition of the sample through an electric tree observing device; and 4) performing calculation by adopting a ScreenRuler virtual ruler. Through adoption of the low-temperature electric tree aging assessment method, the aging degree of the insulating material for the high-temperature super-conduction direct-current voltage cable can be effectively assessed by an electric tree length measuring method.

Low-temperature electric tree aging assessment method based on direct-current harmonic wave superposition

The invention discloses a method for evaluating high temperature aging degree of a DC cable insulation material based on a compound field. A cumulative damage method is adopted to effectively evaluatethe insulation state of an insulation material for a DC cable. The method comprises the following main steps: first, preparing a polypropylene sample based on a pin-plate electrode; then, carrying out the experiment by using an electric branch experiment system device under a high temperature environment; secondly, observing the aging situation of the electric branch of the sample; finally, calculating by using the Matlab language. The pin-plate electrode system simulates the inevitable defects inside the DC cable and effectively simulates the working conditions of the DC cable in the actualoperation.

Method for evaluating high temperature aging degree of DC cable insulation material based on compound field

The invention discloses a trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber. The trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber comprises following steps: OVPOSS nanometer material is dried to remove water; a double-roller mixing mill roller is heated, roller distance and blocking plate distance are adjusted, terpolymer ethylene propylene rubber is introduced into the double-roller mixing mill roller for mix milling, an obtained product is taken out from the double-roller mixing mill roller, and the double rollers are washed; terpolymer ethylene propylene raw rubber is introduced for mix milling and roll banding; OVPOSS nanometer is added into terpolymer ethylene propylene rubber matrix for mix milling; 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane is weighed, and is introduced into the double-roller mixing mill for mix milling so as to obtain an unvulcanized rubber material; the unvulcanized rubber material is taken out from the double-roller mixing mill, is placed between two layers of PET film, is introduced into a high temperature hot processing forming machine die for hot pressing, and obtained rubber sheets are taken out from the high temerpature hot processing forming machine die after cooling; the rubber sheets are suspended in an air blast baking oven, sulfuration is carried outso as to obtain modified terpolymer ethylene propylene rubber sample sheets; the functional group composition and section morphology of the modified terpolymer ethylene propylene rubber sample sheetsare analyzed; rubber sample sheet surface potential attenuation characteristics are measured; SPD method is adopted to obtain trap distribution character diagram and charge mobility characteristics ofthe rubber.

Trap regulation and control method based on POSS modified terpolymer ethylene propylene rubber

The invention discloses a high-temperature aging estimation device for a DC cable insulating material based on a composite field, and the device mainly consists of an experiment apparatus, an electrical tree observation apparatus, a DC superposition pulsed power supply apparatus and a terminal. The interior of the terminal is provided with a Matlab language data analysis platform, and the electrical tree observation apparatus records the test sample change data in the experiment apparatus, and transmits the data to the terminal. The device effectively simulates the working conditions of a DC cable in actual operation.

High-temperature aging estimation device for DC cable insulating material based on composite field

The invention discloses a composite-electric-field-based superconducting insulation material aging evaluation device, which is mainly composed of an experimental device, an electric branch observationdevice, a DC superimposed pulse voltage device and a terminal. A Matlab language data analysis platform is arranged in the terminal. The electric branch observation device observes and records samplechange data in the experimental device and transmits the data to the terminal; and then the Matlab language data analysis platform arranged in the terminal performs analysis and evaluation. Therefore, the aging evaluation of the superconducting insulation material under the composite electric field is realized; a problem of the electric tree branch aging of the insulating material due to continuous increasing of the transmission capacity of the power grid, continuous improvement of the voltage level and the complication of the external environment is solved; and the safe and stable operationof the power system is guaranteed effectively.

Composite-electric-field-based superconducting insulation material aging evaluation device

The invention discloses an aging evaluation method for the superconducting insulating materials based on a composite electric field. On the basis of a cumulative damage method, the insulation state ofan insulating material for a high-temperature superconducting direct-current cable is evaluated effectively. The method comprises: preparing an epoxy resin test sample based on pin-plate electrode; carrying out experiment by using an electric branch experiment system device in a low temperature environment; observing the aging condition of the sample electric branch under an electric branch observation device; and then carrying out calculation by using the Matlab language. Therefore, the aging evaluation of the superconducting insulation material under the composite electric field is realized; a problem of the electric tree branch aging of the insulating material due to continuous increasing of the transmission capacity of the power grid, continuous improvement of the voltage level and the complication of the external environment is solved; and the safe and stable operation of the power system is guaranteed effectively.

Aging evaluation method for superconducting insulating materials based on composite electric field

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