1、 摘摘 要要 变电站是电力输配变的重要环节，它是将发电厂和用电负荷连接起来的纽 带，对电能的分配和变换起着决定性的作用。因此，变电站设计的好坏将直接影 响供电的稳定性和安全性。 在中国经济快速发展的现状下， 为了满足区域经济的发展也为了顺应时代发 展的潮流，大容量变电站因为其对土地资源的利用率高、对周边环境影响小等优 点成为变电站发展所趋。 关于 220KV变电站的设计本着经济、节能、可靠的原则，主要从两个方面展 开：第一是变电站主要设备即变压器型号的确定，根据电站的电压等级和负荷大 小对变压器的容量进行比较计算，变压器型号关系着系统供电的可靠性和稳定 性。第二是变电站一次供电线路的短路计算，
2、短路计算的目的是为了确定电站一 次设备，例如断路器，隔离开关，互感器等的型号选择。此外，电站的防雷保护 在文中也进行了相关的计算和介绍。最后，根据设计结果，给出该电站的一次接 线图。 关键字： 220KV 变电站；变压器；主接线；一次设备 ABSTRACT Substation is an important of the power transmission and distribution and transmission, it is the glue link which conncts power plant with power load. And it plays a decis
3、ive role in power distribution and transformaton. Therefore,the design of the substain will directly impact the stability and safety of power supply. under the current situation of chinas rapid economill development.It is also in order to meet the development of regional economy and keep up with the
4、 trend of the times. Large capacity substaion have becom the trend of the trend of substation deveplment.Because of its high utilization of land resources,and the advantages of small impact on the surrounding envicnment. The design of 220KV substation is based on the principles of economic energy saving and reliable. This paper will start form two aspect. The first one is the determination of the transformers model.The transform is the capacity of transformer acoording to the size of voltage gr
