發(fā)布時(shí)間：2018-09-13 07:38

【摘要】：分析了傳統(tǒng)距離后備段保護(hù)整定方法的難點(diǎn)和不足,并分析了以弱化選擇性為方向的整定簡化方法,針對簡化整定后可能出現(xiàn)的問題,提出了距離后備段動作時(shí)間自適應(yīng)保護(hù)方案。利用相鄰變電站中的保護(hù)信息,構(gòu)建了邏輯判據(jù),對本地距離Ⅱ段和Ⅲ段的動作時(shí)間進(jìn)行調(diào)整。該方案能夠配合簡化整定后的距離后備段保護(hù),使得上下級保護(hù)形成自適應(yīng)的時(shí)間階梯,離故障點(diǎn)越近的保護(hù)動作時(shí)間越短,離故障點(diǎn)越遠(yuǎn)的保護(hù)動作時(shí)間越長,從而保證了在整定簡化中弱化的選擇性,并且具有良好的容錯能力。通過算例對該方案進(jìn)行了驗(yàn)證。
[Abstract]:This paper analyzes the difficulties and shortcomings of the traditional setting method of distance backup section protection, and analyzes the simplified setting method in the direction of weakening selectivity, aiming at the possible problems after simplified setting. An adaptive protection scheme for the action time of the distance backup section is proposed. Based on the protection information in adjacent substations, a logical criterion is constructed to adjust the operation time of local distance sections 鈪，

本文編號：2240498