电力系统自动化Issue(10)：168-173,6.DOI:10.7500/AEPS20140524005
1000 kV 特高压变压器保护方案
Protection Scheme for 1 000 kV UHV Transformer
邓茂军 1孙振文 2马和科 1姚东晓 1倪传坤1
作者信息
- 1. 许继电气股份有限公司，河南省许昌市 461000
- 2. 国网吉林白山供电公司，吉林省白山市 134300
- 折叠
摘要
Abstract
With a high voltage level and large capacity,the main wiring and voltage regulation mode of the 1 000 kV transformer are markedly different from those of a 500 kV transformer.Thus the protection configured for an ultra high voltage (UHV) transformer differs from traditional transformer protection.Based on an analysis of the UHV transformer primary structure,this paper presents a protection scheme suitable for the UHV transformer.In order to solve the problem of differential protection malfunction presumably due to the low secondary harmonic content in the regulating transformer”s differential current during the main transformer no-load closing process,the inrush current identification scheme is optimized for the compensation transformer and the regulating transformer.The correctness and validity of the UHV transformer protection configuration and the improved solution for inrush current are proved by dynamic simulation and field operation.关键词
特高压变压器/有载调压变压器/补偿变压器/综合制动/差动保护/励磁涌流Key words
ultra high voltage (UHV) transformer/on-load regulating transformer/compensating transformer/integrated restraint/differential protection/inrush current引用本文复制引用
邓茂军,孙振文,马和科,姚东晓,倪传坤..1000 kV 特高压变压器保护方案[J].电力系统自动化,2015,(10):168-173,6.
