关键词: 500 kV直变110 kV, 制造能力, 单相自耦变压器, 技术水平

Abstract: This paper inquires into technical advantages,development needs and research status of 500 kV directly changing to 110 kV, and analyses the key technology and equipment capacity. Focusing on researching restricting factors of transformer capacity and manufacturing capacity, the paper calculates the single-phase autotransformer’s maximum capacity in different voltage regulating methods, and analyses the technical level and needs of switch and CT at the maximum capacity.

Key words: 500 kV directly changing to 110 kV, manufacturing capacity, single-phase autotransformer, technical level