CAJ | 학술논문

目前大多数和应涌流机理分析采用运行变压器空载模型，对运行变压器非空载情况下的复杂和应涌流研究较为有限。文中推导了当一台变压器空投、另一台变压器非空载运行时，变压器磁链、电源电流以及运行变压器负载电流的解析表达式，分析了复杂和应涌流的影响因素、关键特征以及对相邻发电机电流差动保护的影响。数字仿真、动模试验以及现场录波数据验证了分析结论的正确性。
목전대다수화응용류궤리분석채용운행변압기공재모형，대운행변압기비공재정황하적복잡화응용류연구교위유한。문중추도료당일태변압기공투、령일태변압기비공재운행시，변압기자련、전원전류이급운행변압기부재전류적해석표체식，분석료복잡화응용류적영향인소、관건특정이급대상린발전궤전류차동보호적영향。수자방진、동모시험이급현장록파수거험증료분석결론적정학성。
Currently the analysis of sympathetic inrush mechanism is usually based on no-load operating transformers.The complex sympathetic inrush when a transformer operates with load is studied less often.The analytical expressions for the transformers flux linkages,the source and load current,when one no-load transformer is energized and the other is operating with load,are derived to obtain the influencing factors and key characteristics of the complex sympathetic inrush.Besides,the impact of sympathetic inrush on the current differential protection for generators is analyzed.Digital simulation,dynamic simulation test,and the on-site recorded data have proved the validity. <br> This work is supported by China Southern Power Grid Co.,Ltd.(No.K-GD2012-324).