基于电流波形相似性的风电场集电线路纵联保护
Current-waveform-similarity-based Pilot Protection of Wind Farm Transmission Lines
刘立群 1杨威 2梅雪傲 2孙彬 2左丹妮1
作者信息
- 1. 大唐滑县风力发电有限责任公司,河南 安阳 456400
- 2. 中国大唐集团科学技术研究院有限公司中南电力试验研究院,河南 郑州 450000
- 折叠
摘要
双馈风力发电机(DFIG)与传统电源的电磁暂态特性不同,导致现有的保护难以适应含 DFIG 风电场送出线路.为了提高故障识别的速度和可靠性,提出了一种基于电流波形失配度的新型纵联保护方案.弗雷歇距离算法用于比较受保护线路两侧当前故障电流的差异.仿真证明所提保护方法能够在不同的故障类型、故障位置和其他条件下可靠、快速地识别故障.
Abstract
The difference in electromagnetic transient characteristics between doubly fed induction generator(DFIG)and traditional power sources makes the existing protection inadequate in adapting to distribution lines of high permeability DFIG wind power integration system.In order to improve speed and reliability of fault identification,a new pilot protection scheme based on waveform mismatching degree of current is proposed in this paper.The Frechet algorithm is used to compare the difference in current discrete data between the two sides of the protected line.A large number of simulations show that the proposed algorithm can reliably and promptly identify faults with different types,positions and other conditions.
关键词
风电/集电线路/纵联保护Key words
wind generation/transmission line/pilot protection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据