Device for testing insulating property of high-voltage oiled paper

An oil-paper insulation and characteristic test technology, which is applied in the direction of test ship construction and dielectric strength test, can solve the lack of effective assessment methods for the insulation of the converter valve side, the difficulty in finding defects in the oil-paper main insulation system, and the low voltage of the AC partial discharge test and other issues to achieve the effect of saving resources, precise electrode spacing, and protecting the environment

Active Publication Date: 2011-01-26
CHINA ELECTRIC POWER RES INST +1
View PDF4 Cites 79 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, since the actual working condition of AC superimposed DC cannot be simulated during the converter rheology test, the AC partial discharge test voltage is low, and it is difficult to find possible defects in the oil-paper main insulat

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for testing insulating property of high-voltage oiled paper
  • Device for testing insulating property of high-voltage oiled paper
  • Device for testing insulating property of high-voltage oiled paper

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] Example

[0069] The following takes the study of the partial discharge characteristics of oil-paper insulation under the action of AC and DC composite voltage as an example to show the specific application of each typical electrode in the invention.

[0070] 1. Research on the partial discharge of oil-paper under the ball plate electrode

[0071] Image 6 The partial discharge connection diagram of oil-paper insulation between the ball-plate electrodes under AC and DC voltage is given. Among them, 11 is the ball-plate electrode structure, in which the spherical electrode diameter is 20mm using stainless steel, and the ground electrode is a stainless steel plate with a diameter of 280mm and a thickness of 10mm. Type electrode.

[0072] Such as Image 6 As shown, the components of the test device of the present invention are all placed in the oil drum 10. When in use, some peripheral components need to be connected to the outside of the test device of the present invention, incl...

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

No PUM Login to view more

Abstract

The invention relates to the technical field of high voltage and insulation, in particular to a device for researching and testing an insulating property of high-voltage oiled paper. Aiming at the positions of frequent faults during the operation of a converter transformer, the device simulates a ball-board, a needle-board, a board-board, faces and suspension discharge electrode models; and the typical high-voltage oil/oiled paper insulating experiments can be realized under direct current (DC) voltage, alternating current (AC) voltage and AC-DC voltage so as to acquire partial discharge characteristics and breakdown characteristics of the major insulation of the converter transformer.

Description

technical field [0001] The invention relates to the technical field of high voltage and insulation, in particular to a research and test device for high voltage oil-paper insulation characteristics. Background technique [0002] With the increase of DC lines in my country and the construction of ±800kV DC transmission projects, research projects related to DC have attracted more and more attention. Existing engineering experience and statistical results show that in HVDC transmission systems, the insulation problems of many key primary equipment such as converter transformers and bushings are the most important factors restricting design and causing field accidents. The statistical results of the WG B4.04 working group of the CIGRE HVDC subcommittee show that the equipment accident rate of the HVDC transmission system is more than twice that of the AC system. [0003] In the first batch of converter transformer main insulation tests in Geshang Project in my country, insulat...

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
no application Login to view more
IPC IPC(8): G01R31/12G01R31/16
Inventor 李博程涣超李金忠李光范孙倩邓俊宇徐会雨
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap