文章将结合110kV变电站工程在陕西省榆林市农村电网建设中的实际应用探究其一次电气部分设计的详细情况，在110kV变电站一次电气部分准备工作的基础上，探讨110kV变电站一次电气部分设计中配电装置、变压器、接线方式、电气设备选型、短路电流计算等方面的内容。-This paper will combine the 110kV substation in rural power grid construction in Yulin city in Shaanxi province to explore the practical application of a electrical part of the design in detail, based on a 110kV substation electrical part of the preparation, with a discussion on electrical design of 110kV substation electrical part device, transformer, wiring, electrical equipment selection, short circuit current calculation etc..