电力系统保护与控制Issue(15)：142-148,7.
特高压1000 kV降压220 kV变压器的应用前景分析
Application prospect analysis for 1 000 kV/220 kV UHV transformer
摘要
Abstract
UHV is a promising technology for the development of grid. 1 000 kV/220 kV transformer will shorten electric distance between power supplies and load, which will lead to lower cost and smaller occupation for transmission project. But it can also raise short circuit current level. Thus it is essential to analyze the prospect of 1 000 kV step-down 220 kV transformer comprehensively. This paper compares the cost of direct step-down scheme by using 1 000 kV/220 kV transformer and the conventional step down scheme by using 1 000 kV/500 kV in series with 500 kV/220 kV transformer for the same transmission capacity. The short circuit current level of the two aforementioned schemes are also analyzed by PSASP for different gird develop stages. The requirements for using 1 000 kV/220 kV transformer are finally summarized as a practice reference.关键词
特高压/变压器/经济性/短路电流/应用前景Key words
UHV/transformer/cost/short-circuit current/application prospect分类
信息技术与安全科学引用本文复制引用
程军照,陈江波,张曦,郭慧浩,蔡胜伟,邵苠峰..特高压1000 kV降压220 kV变压器的应用前景分析[J].电力系统保护与控制,2014,(15):142-148,7.基金项目
国家电网公司科技项目 （）
