中国电机工程学报Issue(15)：2502-2510,9.DOI:10.13334/j.0258-8013.pcsee.2014.15.022
交直流叠加电场下油纸绝缘的油流带电特性
Flow Electrification Characteristics of Oil-Paper Insulation under AC Superimposed DC Electric Field
摘要
Abstract
In order to investigate the flow electrification characteristics of oil-paper insulation under the AC superimposed DC electric field, an oil-paper tube model with concentric cylindrical electrode geometry was built in laboratory. Experiment study on flow electrification under AC superimposed DC electric field was carried out with the closed oil circulating system, and the influence of voltage amplitude, DC component ratio and oil flow velocity on flow electrification was discussed. The experiment results show that the influences of oil flow velocity and the amplitude of applied voltage on streaming currents are related to temperature. At low temperature, the streaming current increases linearly with flow velocity and amplitude of applied voltage, and the increase of the DC component ratio can enhance the streaming current. At high temperature, the streaming current increases exponentially with flow velocity and shows peak effect with amplitude of applied voltage. The peak point voltage decreases with the DC component ratio. The theoretical analysis demonstrates that the streaming current depends on migration and diffusion rate of the negative ion in paper at low temperature. However, at high temperature, it is related to the stripped rate of positive ion by oil flow and the charge leakage rate at the outer electrode. The temperature can influence the flow electrification characteristics by affecting the ions migration speed and the electric field distribution in the insulation.关键词
油纸绝缘/交直流叠加电场/油流带电/换流变压器/离子迁移Key words
oil-paper insulation/AC superimposed DC electric field/flow electrification/converter transformer/ion migration分类
信息技术与安全科学引用本文复制引用
陈庆国,高源,池明赫,林林..交直流叠加电场下油纸绝缘的油流带电特性[J].中国电机工程学报,2014,(15):2502-2510,9.基金项目
国家自然科学基金项目(51277047)；黑龙江省杰出青年基金资助项目(JC2010-09)。Project Supported by the National Natural Science Foundation of China (51277047) （51277047）
Outstanding Youth Foundation of Heilongjiang Province (JC2010-09) （JC2010-09）
