CAJ | 학술논문

基于矩量法针对500 kV变电站在正常运行及短路故障时，站内工频磁场的分布情况进行研究。首先，对工频磁场矩量法进行推导，然后对变电站内500 kV开关场、220 kV开关场、35 kV区II及站内干式空心电抗器组建立模型，并计算分析了站内区II的工频磁场。对计算结果与实测数据进行对比，验证了算法及模型的可行性与正确性。最后，分析变电站220 kV 区II进线处单相短路故障时工频磁场的分布。所做工作可为预测变电站内不同工况下的工频磁场分布提供一种有效的方法。
기우구량법침대500 kV변전참재정상운행급단로고장시，참내공빈자장적분포정황진행연구。수선，대공빈자장구량법진행추도，연후대변전참내500 kV개관장、220 kV개관장、35 kV구II급참내간식공심전항기조건립모형，병계산분석료참내구II적공빈자장。대계산결과여실측수거진행대비，험증료산법급모형적가행성여정학성。최후，분석변전참220 kV 구II진선처단상단로고장시공빈자장적분포。소주공작가위예측변전참내불동공황하적공빈자장분포제공일충유효적방법。
In this paper, based on the method of moment, the distribution of the power frequency magnetic field at normal operation and short circuit faults in 500 kV substation is studied. Firstly, the power frequency magnetic field moment method is proposed, then based on the models of the substation 500 kV switch yard, 220 kV switchyard, 35 kV area and the dry hollow reactor, and the power frequency magnetic field inside the 500 kV substation is analysis. The calculated results and the measured data are in good comparing, showing the feasibility and correctness of the model and algorithm; finally, the distribution of power frequency magnetic field below the incoming lines in substation 220 kV regional at the single phase short circuit fault is analysis. The work of this paper, which can provide the distribution of power frequency magnetic field in different conditions in the substation, and also is an effective method to forecast the distribution of power frequency magnetic field in substation.