南方电网技术2024，Vol.18Issue(12)：35-41,7.DOI:10.13648/j.cnki.issn1674-0629.2024.12.005
酯类绝缘油的油流带电度影响因素研究
Study on the Factors Influencing the Oil Flow Chargeability of Ester Insulating Oil
摘要
Abstract
In order to study the electrification tendency of environment-friendly ester insulating oil,an oil flow chargeability test platform is built.By selecting two kinds of commercial ester insulating oil and mineral insulating oil,including FR3 natural ester,Midel 7131 synthetic ester and Karamay insulating oil,the influence of key factors such as oil paper aging degree,flow rate and temperature on the oil flow electrification of ester insulating oil is analyzed.The results show that the viscosity of ester insulating oil is high.Under the action of oil flow,the friction contact between oil and paper is further increased,and the charge separation at oil-paper interface is accelerated,resulting in a significantly higher electrical charge than mineral insulating oil,of which natural ester is the highest,followed by synthetic ester.With the increase of oil flow rate,the charge separation at the oil-paper interface is intensi-fied,and the electrification tendency of ester insulating oil is enhanced.The increase of the test temperature will accelerate the ioniza-tion process of polar molecules in the insulating oil,resulting in an increase in the electrification tendency of the insulating oil.With the increase of the temperature,the viscosity of the insulating oil will decrease,resulting in the weakening of the contact friction of the oil-paper,and its electrification tendency will decrease instead.The increase of the aging degree of oil paper accelerates the formation of aging polar products in the oil,and then accelerates the dissociation of impurity molecules,resulting in the increase of the number of intrinsic ions and impurity ions in the oil,thus increasing the degree of oil flow electrification.关键词
酯类绝缘油/油流带电/带电度/天然酯/合成酯Key words
ester insulating oil/oil flow chargeability/chargeability/natural ester/synthetic ester分类
信息技术与安全科学引用本文复制引用
钱艺华,卓然,王青,高萌,赵耀洪,傅明利..酯类绝缘油的油流带电度影响因素研究[J].南方电网技术,2024,18(12):35-41,7.基金项目
国家自然科学基金面上项目(52177129) （52177129）
中国南方电网有限责任公司科技项目(GDKJXM20210086).Supported by the General Project of National Natural Science Foundation of China(52177129) （GDKJXM20210086）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(GDKJXM20210086). （GDKJXM20210086）
