System and method for measuring high-voltage time/frequency domain dielectric response characteristics of power equipment
A dielectric response and power equipment technology, applied in the field of power, can solve problems such as difficult to grasp the nonlinear characteristics of the insulation medium of power equipment, effective detection and diagnosis of unfavorable defects, deviation of measurement results, etc., to achieve sensitivity to insulation defects, high measurement voltage, The effect of collecting high signal strength
Inactive Publication Date: 2020-05-29
CHONGQING UNIV +1
View PDF13 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] At present, most researchers use the 200V AC and DC voltages that come with dielectric equipment to conduct time / frequency domain dielectric measurements on the insulation status of power transformers, bushings, transformers, power cables, generators and other power equipment. The main shortcomings are: the time / frequency domain dielectric measurement under low voltage is easily disturbed by external factors such as electromagnetic noise, which will cause deviations in measurement results; the time / frequency domain dielectric measurement under low voltage is not easy to find some defects in the insulation medium of power equipment, It is difficult to grasp the nonlinear characteristics of the insulation medium of power equipment as the test voltage changes, which is not conducive to the effective detection and diagnosis of defects
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 Construction
[0046] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.
[0047] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...
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 relates to a system and a method for measuring high-voltage time / frequency domain dielectric response characteristics of power equipment, and belongs to the technical field of power. Thesystem comprises a power supply unit, a measuring unit, a high-voltage power amplifier, a standard capacitor (inductor), a tested object, a voltage divider and an oscilloscope. The invention providesa high-voltage (greater than or equal to 1000V) time / frequency domain dielectric response measurement method of the power equipment and a high-voltage time / frequency domain dielectric response measurement operation process. Compared with the traditional low-voltage (less than or equal to 200V) time / frequency domain dielectric response measurement, the high-voltage time / frequency domain dielectricresponse is higher in anti-interference capability due to high measurement voltage and high acquired signal strength, is more practical for dielectric performance test of large-scale power equipmenton site, and the system and the method have the advantage of more sensitive insulation defect discovery.
Description
technical field [0001] The invention belongs to the field of electric power technology, and relates to a high-voltage (≥1000V) time / frequency domain dielectric response characteristic measurement system and method for electric equipment. Background technique [0002] Domestic and foreign researchers have carried out a lot of research on the diagnosis and evaluation of the insulation status of power transformers, bushings, transformers, power cables, generators and other power equipment, and have achieved certain results. The time / frequency domain dielectric response test technology based on the dielectric response is widely used in the diagnosis and evaluation of the insulation performance of power transformers, bushings, transformers, power cables, generators and other power equipment, and is a current research hotspot. The dielectric response testing technology takes the dielectric material as the core, and can be divided into time-domain and frequency-domain dielectric re...
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 Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R27/26
CPCG01R31/12G01R27/2635G01R27/2694G01R31/1272
Inventor 郝建程佳路戴锡泽简政高晨煜廖瑞金
Owner CHONGQING UNIV