一种直流线路行波保护方法及装置
By collecting the electrical quantity signals of the station and combining them with voltage, current, pole wave, and ground wave criteria, the reliability problem of traveling wave protection for DC lines was solved, rapid and reliable fault detection was achieved, and the protection performance of DC transmission lines was improved.
CN116054101BActive Publication Date: 2026-07-17XJ GRP CORP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XJ GRP CORP
- Filing Date
- 2023-02-02
- Publication Date
- 2026-07-17
Smart Images
Figure CN116054101B_ABST
Abstract
本发明涉及直流输电保护领域，公开了一种直流线路行波保护方法及装置，本发明的行波保护方法仅采集本站本极电气量信号，通过电压判据、电流判据、极波判据、和地波判据互相配合实现快速可靠检测线路故障。电压判据实现行波保护的启动和出口辅助判断功能；电流判据实现行波保护的直流线路首端区内、外故障识别功能；极波判据作为行波保护的主判据实现直流线路尾端区内、外故障识别功能；地波判据作为行波保护的故障极识别功能，确保双极运行时行波保护仅在故障极可靠动作。本发明仅采集本站本极电气量信号，既能满足保护设计原则又能确保非故障极的防误性，实现直流线路故障快速可靠检测，提高了直流输电线路保护的可靠性。
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