220kV降压变电所电气部分初步设计

摘要

Substation is a key part of electrical power system.The rational design of substation can ensure the reliability of power supplying and meet the demand of long term load.A regional stepdown substation of 220 kV is designed to supply power to local load.This article presents the original data of the designed substation,the selection of its main transformer and the preliminary design of its main electrical connection so as to provide reference for the design of similar substations.%变电所是电力系统极其重要的组成部分,其合理设计与建设可以保证供电的可靠性和满足远期负荷的要求。设计一个220kV地区性降压变电所,主要向地方负荷供电。介绍该变电所的原始资料,阐述其电气部分主变压器的选择和电气主接线的拟定设计,为此类变电所的设计提供理论参考。