摘要:本文主要從同桿并架雙回線路繼電保護中存在的問題著手，分析了影響雙回線路保護的因素，主要分析了過渡電阻和零序互感對雙回線路繼電保護的影響，繪制電力系統(tǒng)線路接線圖，對系統(tǒng)圖進行綜合分析，同時對所給系統(tǒng)的500KV線路部分進行距離三段保護和縱聯(lián)保護整定計算，以縱聯(lián)保護作為主保護，距離保護作為后備保護，按照系統(tǒng)保護的要求進行保護配置，保證繼電器保護有選擇、速動、靈敏、可靠性的對線路進行保護，另外，在系統(tǒng)發(fā)生故障時，保護跳閘后，為保證供電可靠性、穩(wěn)定性，本文主要討論的雙回線路故障自動重合閘合閘，根據(jù)系統(tǒng)發(fā)生的故障類型進行重合閘動作時限整定，最后對雙回線路的保護配置進行綜合重合閘設(shè)計。

關(guān)鍵詞：雙回線路 ； 繼電保護 ； 自動重合閘

ABSTRACT:This article  mainly starts from the same tower double-circuit transmission line relay protection of existing problems, and analyzes the influence factors of double circuit transmission line protection, mainly analyzes the influences of the transition resistance and the zero-sequence mutual inductance on double-circuit transmission line relay protection of power system wiring diagram, draw the line, to make a comprehensive analysis of the system, at the same time on 500KV line the given system is part of the three section of distance protection and pilot protection setting calculation, the pilot protection as the main protection, distance protection as a back-up protection, protection configuration according to the system requirements for protection, guarantee the relay protection options, quick, sensitive, reliable protection, on line in addition, occurred in the system fault, tripping, in order to ensure the power supply reliability, stability, closing the automatic reclosing double-circuit transmission line fault mainly discussed in this paper, by reclosing time setting according to the type of fault system, the protection configuration of double circuit

synthesis reclosing design.

Key words: Double circuit transmission line ；relaying protection ；Automatic reclosing