Title:
DEFECT DETECTION METHOD AND APPARATUS FOR CABLE BUFFER LAYER, DEVICE, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/173662
Kind Code:
A1
Abstract:
A defect detection method and apparatus for a cable buffer layer, a device, and a storage medium. The method comprises: obtaining specification parameters of a corrugated sheath (40) of a cable to be detected; calculating to obtain a first volume when a buffer layer (30) is not deformed and a second volume of a deformed part when the cable buffer layer (30) is stressed to deform; calculating to obtain a compression deformation ratio of the buffer layer (30) according to the first volume and the second volume; obtaining a voltage, a current, an electrode area, an electrode distance and an initial electrode distance when the buffer layer (30) reaches the compression deformation ratio; calculating to obtain a volume resistivity of the buffer layer (30); and comparing the volume resistivity with a preset evaluation parameter to obtain a defect detection result of the buffer layer (30). In consideration of lapping, damping and compression conditions of a wrapping tape of the cable buffer layer, the method can accurately calculate the volume resistivity of the cable buffer layer, and then can accurately determine, according to the volume resistivity, whether the cable buffer layer has a quality defect.
Inventors:
FANG SHENGCHEN (CN)
YU YANG (CN)
LI WEIBO (CN)
SONG PENGXIAN (CN)
HE CHUN (CN)
ZHANG CHI (CN)
TANG QINGHUA (CN)
LI LONGJI (CN)
ZHANG CHUNHUI (CN)
LI SONGYUAN (CN)
LU FEI (CN)
LI LIN (CN)
YANG LEI (CN)
WANG XIAOGUANG (CN)
ZHU XULIANG (CN)
DUAN MINGHUI (CN)
WANG HAOMING (CN)
FAN WEI (CN)
YU YANG (CN)
LI WEIBO (CN)
SONG PENGXIAN (CN)
HE CHUN (CN)
ZHANG CHI (CN)
TANG QINGHUA (CN)
LI LONGJI (CN)
ZHANG CHUNHUI (CN)
LI SONGYUAN (CN)
LU FEI (CN)
LI LIN (CN)
YANG LEI (CN)
WANG XIAOGUANG (CN)
ZHU XULIANG (CN)
DUAN MINGHUI (CN)
WANG HAOMING (CN)
FAN WEI (CN)
Application Number:
PCT/CN2022/111004
Publication Date:
September 21, 2023
Filing Date:
August 09, 2022
Export Citation:
Assignee:
ELECTRIC POWER SCIENCE & RES INSTITUTE OF STATE GRID TIANJIN ELECTRIC POWER COMPANY (CN)
STATE GRID TIANJIN ELECTRIC POWER CO (CN)
STATE GRID TIANJIN ELECTRIC POWER CO (CN)
International Classes:
G01N27/04
Domestic Patent References:
| WO2015145068A1 | 2015-10-01 |
Foreign References:
| CN114324486A | 2022-04-12 | |||
| CN113588724A | 2021-11-02 | |||
| CN113932762A | 2022-01-14 | |||
| CN113588488A | 2021-11-02 | |||
| US4387336A | 1983-06-07 |
Other References:
HUANG YU, WU CHANGSHUN; SUN LI: "Study on the Measurement Method of Volume Resistivity of Buffer Material for High Voltage Cable", ELECTRICAL ENGINEERING, vol. 21, no. 10, 15 October 2020 (2020-10-15), XP093092828, ISSN: 1673-3800
WU KE, DENG XUDONG; BIE HUA; LI KUNSHENG; FU QIANGLIN; SONG WEI: "Ablation Mechanism Analysis and Countermeasures of Insulation Shielding of High Voltage Power Cable", INSULATING MATERIALS, vol. 53, no. 2, 20 February 2020 (2020-02-20), pages 97 - 101, XP093092831, ISSN: 1009-9239, DOI: 10.16790/j.cnki.1009-9239.im.2020.02.015
WU KE, DENG XUDONG; BIE HUA; LI KUNSHENG; FU QIANGLIN; SONG WEI: "Ablation Mechanism Analysis and Countermeasures of Insulation Shielding of High Voltage Power Cable", INSULATING MATERIALS, vol. 53, no. 2, 20 February 2020 (2020-02-20), pages 97 - 101, XP093092831, ISSN: 1009-9239, DOI: 10.16790/j.cnki.1009-9239.im.2020.02.015
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF: