CROSS-LINKING PERFORMANCE CONSISTENCY CHARACTERIZATION METHOD FOR CROSS-LINKED POLYETHYLENE 500 KV CABLE INSULATION MATERIAL

WIPO Patent Application WO/2023/019721

A1

The present invention relates to the technical field of high voltage and insulation. Disclosed is a cross-linking performance consistency characterization method for a cross-linked polyethylene 500 kV cable insulation material. The characterization method comprises the following steps: (1) preparing a standard sample: fully stirring and mixing low-density polyethylene and dicumyl peroxide at 63-67°C, and standing to fully diffuse the dicumyl peroxide into the low-density polyethylene; (2) testing, by using a torque rheometer, a cross-linking reaction kinetic curve of the standard sample and a sample to be tested; and (3) eliminating, by using a standard sample transformation method, a difference introduced by different test points into the sample cross-linking reaction kinetic curve. By using the method, cross-linking reaction characteristics of the cross-linked polyethylene 500 kV cable insulation material are effectively characterized, thereby solving the problem of accurate comparison of results of different test points.

CHEN XIAO (CN)
XU SHU (CN)
ZHANG BIN (CN)
WU GUOXING (CN)
FU MINGLI (CN)
HOU SHUAI (CN)
LI XIAOLIN (CN)
ZHU WENBO (CN)
HUI BAOJUN (CN)
FENG BIN (CN)
ZHANG YIFAN (CN)
ZHAN YUNPENG (CN)

PCT/CN2021/125356

February 23, 2023

October 21, 2021

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SHENZHEN POWER SUPPLY CO LTD (CN)
ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID (CN)

G01N11/14

CN103808754A	2014-05-21
CN107314942A	2017-11-03
CN102183539A	2011-09-14
CN110579692A	2019-12-17
JP2015224996A	2015-12-14

ADVANCE CHINA IP LAW OFFICE (CN)

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