摘要
为全面研究电力变压器绝缘状态的影响因素,以极化和去极化电流(PDC)法为基础,采用仿真和实验相结合的手段,对多个影响因素展开研究。通过搭建变压器油纸绝缘系统等效模型,仿真得出极化电压、极化时间和去极化时间对极化去极化电流的影响规律;开展水分和油纸老化试验,研究含水量、绝缘油老化和绝缘纸老化与极化去极化电流和油纸绝缘状态之间的关系,为今后变压器绝缘状况的研究和PDC法的推广应用打下基础。
To comprehensively study the factors affecting the insulated state of power transformer, on the basis of the polarization anddepolarization current （ P D C ） method, the measure by combining simulation and experiment is taken. Through building the equivalent model oftransformer oil-paper insulation system , the influence regular patterns between polarization voltage, polarization tim e, and depolarization tim e,upon polarization and depolarization current are obtained with simulation; the aging tests of moisture and oil paper aging are conducted forresearching the relationships between moisture, insulating oil aging, oil paper aging and polarization and depolarization current and oil paperagain, thus the foundation is laid for future research on insulation state of power tm nsfomation and promotion of the application of PDC method.
出处
《自动化仪表》
CAS
2015年第10期9-12,共4页
Process Automation Instrumentation
关键词
电力变压器
油纸绝缘
极化电流
去极化电流
老化
水分
Power transformer Oil paper insulation Polarization current Depolarization current Insulation Aging Moisture
