基于扩展边界的柔性直流输电网区域纵联保护方法及装置
By employing the extended boundary longitudinal protection method in flexible DC transmission networks, using smoothing reactors to form the extended boundary, constructing directional elements and coordinating with adjacent protection, the problem of insufficient protection sensitivity and reliability in high-resistance faults and strong noise environments is solved, and accurate fault direction identification and effective coordination of regional protection are achieved.
CN117410945BActive Publication Date: 2026-07-17TIANJIN UNIV +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN UNIV
- Filing Date
- 2023-10-17
- Publication Date
- 2026-07-17
Smart Images
Figure CN117410945B_ABST
Abstract
本发明涉及一种基于扩展边界的柔性直流系统区域纵联保护方法及装置，包括以下步骤：确定保护动作时间tDW；确定tDW内保护测量点，计算电压故障分量；根据保护测量点的电压故障分量，在tDW内获取起动判据、方向识别判据、选极判据、雷击闭锁判据的判定结果；根据所述判定结果获取相邻测点信息，形成区域保护的配合。本发明对采样率要求低，无需大量的数据传输，在高阻故障和强噪声下，以及边界特性削弱时仍具有较高的灵敏性和可靠性。
Need to check novelty before this filing date? Find Prior Art