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为了系统研究特高压交流变电站电磁环境建模方法和预测计算,针对特高压交流变电站设备附近电场的复杂性,提出了基于边界无原理的线模型和面模型相结合的3维工频电场计算方法,建立了基于边界元法的导线仿真模型,并推导了线模型的计算公式.将线模型引入边界元法与面模型结合共同模拟结构复杂的电气设备,通过计算设备的表面电荷和导线的等效电荷得出设备周围的空间电场分布;分析计算了国内晋东南1000 kV特高压交流变电站高压并联电抗器附近离地1.5 m平面上的工频电场分布.计算结果表明,线模型大大提高了计算的效率.通过与现场测量数据的比较,证实了该算法的有效性.“,”It is essential to research the method of UHV AC stations electromagnetic environment modeling and prediction computation while it is difficult and inaccurate to calculate 3D electric field distribution around equipment in UHV AC substations by means of using some softwares.In order to improve the calculation efficiency,a new method based on BEM is proposed to deal with complex electrical equipment.In this method,a new computational model called line-modle is introduced to simulate wire.The space electric field near equipments can be obtained through calculating the surface charge and the equivalent change,as a result,the computational accuracy and speed enhance dramatically.The electric field profiles around reactors in Jindongnan substation are calculated and the availability of the method is demonstrated by comparing the simulated and the measured results.