高压电器2017，Vol.53Issue(11)：115-121,7.DOI:10.13296/j.1001-1609.hva.2017.11.019
基于PDC的变压器油浸纸老化程度与水分含量评估方法研究
Assessment Method for Aging Degree and Moisture Content of Transformer Oil-paper Based on PDC
摘要
Abstract
To apply the polarization and depolarization current(PDC)method to state evaluation of transformer's oil-paper insulation,a PDC test platform of oil-paper insulation was set up to obtain the PDC characteristic curves of the oil-paper samples with different aging degree and moisture content.Analysis on these curves shows that:1) the aging degree exerts effects on the front and middle segments of the of the polarization current curve and the whole depolarization current curve;2)the moisture content exerts effects on the whole polarization current curve and the middle and last segments of the depolarization current curve.It is suggested that the initial depolarization current idp1 and steady polarization current id(conduction current)be taken as the mapping characteristic quantities of oil paper's degree of polymerization and moisture content,respectively to fit their functional relationship for the assessment purpose of the moisture content of oil-paper with different aging degree.关键词
油浸纸/老化程度/水分含量/PDC/初始去极化电流/稳态极化电流Key words
oil paper/aging degree/moisture content/PDC/initial depolarization current/steady polarization current引用本文复制引用
黎成林,曹保江,尹小兵,郝长金,吴广宁,高波..基于PDC的变压器油浸纸老化程度与水分含量评估方法研究[J].高压电器,2017,53(11):115-121,7.基金项目
中国电力科学研究院科技项目(GYB51201400860).Project Supported by Science and Technology Project of China Electric Power Research Institute(GYB51201400860). （GYB51201400860）
