【摘要】 就合空载变压器引起的铁磁谐振问题,探讨其等值回路、基本方程、谐振条件、谐振能量和分析方法。采用EMTP程序对超高压输电系统中出现的典型谐振现象进行分析,并提供仿真波形供参考。还进一步讨论了合空载变压器可能带来的问题,并针对不同系统条件提出了相应的对策。更多还原

【Abstract】 This paper presents an analysis of high frequency resonance caused by switching on the unload transformers,including its equivalent circuit,basic equation,resonance condition,origin of harmonic energy and its analytical methods.The typical resonance phenomena from EHV transmission system are studied by means of EMTP and the simulation results are shown in the paper.The potential problem caused by energization of transformer and its countermeasure for different system conditions are discussed in this paper.更多还原