在直流牽引供電系統(tǒng)中，饋線斷路器在合閘前及故障跳閘后重合閘前，需經(jīng)過線路檢
測回路對線路進行非短路確認后才能合閘。本文闡述了線路檢測及其與自動重合閘配合的原理，并介紹了直流牽引饋線的保護配置。根據(jù)運營實例，說明了線路檢測在饋線保護中的作用，對其在運行中暴露出的整定及與自動重合閘配合問題進行了分析，并提出了解決方案。
關鍵詞：直流牽引供電系統(tǒng)；線路檢測；自動重合閘；Profibus—DP；繼電保護
Abstract: In DC traction power supply system, after line detection can not found short circuit, feeder circuit breaker can be closed. The principle of line detection with automatic re-closing was discussed and DC traction feeder relay protection is introduced. According to representative example, the application of line detection with automatic re-closing and problems, which was found in work, was analyzed, and a solutions was put forward.
Key words ： DC traction power supply system; line detection; automatic re-closing;
Profibus—DP；relay protection；