CAJ | 학술논문

由高压直流输电产生的直流电流会给电力变压器造成一系列危害.基于爱泼斯坦方圈设计了实验方案并对电力变压器进行了直流偏磁实验.通过对励磁电流测量值分析,研究了直流偏磁对励磁电流各次谐波的影响;通过对铁心损耗的测量分析了直流偏磁条件下硅钢片的损耗特性.基于爱泼斯坦方圈的直流偏磁实验研究有利于揭示直流偏磁机理,同时对电力变压器的工程设计有着重要的指导意义.
유고압직류수전산생적직류전류회급전력변압기조성일계렬위해.기우애발사탄방권설계료실험방안병대전력변압기진행료직류편자실험.통과대려자전류측량치분석,연구료직류편자대려자전류각차해파적영향;통과대철심손모적측량분석료직류편자조건하규강편적손모특성.기우애발사탄방권적직류편자실험연구유리우게시직류편자궤리,동시대전력변압기적공정설계유착중요적지도의의.
The DC bias current arising from the HVDC system may lead to a series of damages to power transformer. The DC-biasing experiment based on Epstein frame are designed and carried out. The measured magnetizing current are analyzed to study the influence of DC bias on harmonic components of magnetizing current. The iron loss is measured and analyzed under DC-biased magnetization. The DC-biasing experiment based on Epstein frame contributes to exploring the mechanism of DC bias phenomenon and designing the power transformer in engineering.