Electromagnetic force generation method in electrical insulation film pulse voltage accelerated aging experiment
A technology of electromagnetic force and pulse voltage, applied in the direction of measuring electricity, measuring electrical variables, testing dielectric strength, etc., can solve the problems of not considering the influence of insulation aging speed, insulation life model not considering electromagnetic force, etc.
Active Publication Date: 2017-04-19
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The currently used pulse electrical stress insulating film accelerated aging test device only includes three stress factors of pulse voltage amplitude, frequency, and temperature, and is mainly used to study the influence of pulse voltage amplitude, pulse frequency, and temperature stress factors on insulation life. The influence of mechanical stress generated by electromagnetic mechanical force on the aging speed of insulation has not been considered, and the insulation life model based on these studies has not considered the influence of electromagnetic force
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0015] 1. Establish an experimental device, including high-voltage pulse power source 1, flexible high-voltage line 2, upper electrode 3, lower electrode 5 and excitation power source 7.
[0016] 2. The upper electrode 3 is a cylinder made of soft magnetic conductor material, with an outer diameter of 25mm and a height of 25mm. An M4 threaded hole is set at the position marked A on the upper electrode 3 to connect to the P of the high-voltage pulse power supply 1. U The output end, the lower plane of the upper electrode 3 is chamfered and ground as the conductive contact surface of the insulating film sample 4.
[0017] 3. The lower electrode 5 is composed of a soft magnetic conductor material divided into NS poles and an embedded excitation coil 6. The upper plane of the divided into NS poles has a magnetic pole width of 3-6mm, and the NS poles are separated by brass with a width of about 2.5mm. As attached image 3 Shown. The upper plane of the lower electrode 5 is a smooth, smoo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an electromagnetic force generation method in an electrical insulation film pulse voltage accelerated aging experiment. An experiment device is established, which comprises a high-voltage pulsed power supply, a flexible high-tension line, an upper electrode, a lower electrode, and an excitation source. An electrical insulation film sample is placed between the conductive planes of the upper and lower electrodes. The excitation source applies a pulsed excitation current to the excitation coil of the lower electrode to produce an electromagnetic mechanical force on the electrical insulation film sample in the middle of the electrodes, and the magnitude and cycle of the electromagnetic force are controlled by controlling the amplitude and cycle of the pulsed excitation current. An electrical stress is applied between the upper electrode and the lower electrode, and the upper electrode, the lower electrode and the electrical insulation film sample are placed in a temperature-controlled homogeneous temperature field to produce a thermal stress needed. A stress factor, namely, electromagnetic force, is added on the basis of electrical stress and temperature stress. Thus, the stress environment withstood by insulation during operation of electrical equipment can be reflected more completely, and the law of insulation aging in a pulsed electrical stress environment can be studied more accurately.
Description
Technical field [0001] The invention relates to a method for generating electromagnetic force in a pulse electric stress insulation accelerated aging life test of an electrical insulating film. Background technique [0002] Electrical insulating film is an important electrical basic material. Its performance and electrical life directly affect the life and operational safety of electrical equipment. The life of electrical insulating films is mainly affected by electrical stress, thermal stress, and electromagnetic mechanical forces. In order to quickly obtain the electrical life information of the electrical insulation film, it is necessary to simulate the stress environment of the electrical insulation film during the operation of electrical equipment. Without changing the insulation failure mechanism, the electrical insulation film is accelerated by appropriately increasing the stress value of the electrical insulation film. In the aging process, confirm the life performance a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 蒋存波孔祥丽金红杨家志陈小琴
Owner GUILIN UNIVERSITY OF TECHNOLOGY