基于相邻站信息的距离后备段动作时间自适应保护方案
发布时间：2018-09-13 07:38
【摘要】：分析了传统距离后备段保护整定方法的难点和不足,并分析了以弱化选择性为方向的整定简化方法,针对简化整定后可能出现的问题,提出了距离后备段动作时间自适应保护方案。利用相邻变电站中的保护信息,构建了逻辑判据,对本地距离Ⅱ段和Ⅲ段的动作时间进行调整。该方案能够配合简化整定后的距离后备段保护,使得上下级保护形成自适应的时间阶梯,离故障点越近的保护动作时间越短,离故障点越远的保护动作时间越长,从而保证了在整定简化中弱化的选择性,并且具有良好的容错能力。通过算例对该方案进行了验证。
[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，
本文编号：2240498
[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，
本文编号：2240498
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