Open AccessResearch of PD transfer ratio analysis of converter transformer IPVD test based on distributed parameters
Author(s) -
Xinru Yu,
Peng Jia,
Chao Wu,
Junyu Deng,
Shuqi Zhang,
HuiMing Cheng
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2005/1/012032
Subject(s) - partial discharge , transformer , electrical engineering , linear variable differential transformer , voltage , electromagnetic coil , delta wye transformer , rotary variable differential transformer , forward converter , engineering , distribution transformer , electronic engineering , boost converter
In the process of factory test of converter transformer, the withstand voltage test with partial discharge is usually used to judge whether the internal insulation structure is in good condition or not. If there is no partial discharge, the insulation is in good condition. There are tens of thousands of insulation materials in UHV converter transformer, and the winding structure is complex. If partial discharge is detected during the withstand voltage test, it is impossible to locate the discharge position quickly and accurately. In this study, by analysing the partial discharge signal transmission relationship in the withstand voltage test of converter transformer, combined with the partial discharge signal transmission model of converter transformer winding based on distributed parameters, the partial discharge area in the converter transformer winding is calculated and judged. This method can be applied to the IVPD test of converter transformer to assist in locating the partial discharge area in the winding, greatly shorten the time of fault diagnosis and location of converter transformer, and enhance the scientificity and effectiveness of the test.