月刊
ISSN 1000-7229
CN 11-2583/TM
电力建设 ›› 2023, Vol. 44 ›› Issue (5): 94-107.doi: 10.12204/j.issn.1000-7229.2023.05.010
李浩1, 解超1(), 周伟绩2(), 李凤婷1(), 尹纯亚1()
收稿日期:
2022-07-11
出版日期:
2023-05-01
发布日期:
2023-04-27
通讯作者:
解超(1987),男,博士,副教授,主要研究方向为电力系统继电保护及可再生能源并网技术,E-mail:cheesemonster@sina.com。
作者简介:
李浩(1998),男,硕士研究生,主要研究方向为电力系统继电保护及可再生能源并网技术;基金资助:
LI Hao1, XIE Chao1(), ZHOU Weiji2(), LI Fengting1(), YIN Chunya1()
Received:
2022-07-11
Online:
2023-05-01
Published:
2023-04-27
Supported by:
摘要:
风电机组对负序电流耐受能力不强,当风电场(群)能量馈出通道不止一条时,风电送出线路多采用三相一次重合闸。若风电送出线路未配置并联电抗器,线路三相跳闸后,缺乏耦合回路,为自适应重合闸故障性质判定带来了困难。针对上述问题,提出一种能够适用于风电送出线路的新型自适应重合闸策略。该策略采用单侧分相重合的方式,以应对多种风电送出线路故障,并构造了相间电容耦合回路;该策略基于电容耦合特性,采用电压幅值判据,实现对故障性质及故障熄弧时间的快速、准确判定。理论推导和基于PSCAD/EMTDC平台仿真实验证明,所提自适应重合闸策略能够避免对风电机组注入负序电流,同时显著提升风电送出线路重合闸成功率,保证风电场(群)电能外送的连续性。
中图分类号:
李浩, 解超, 周伟绩, 李凤婷, 尹纯亚. 采用分相重合方式的风电送出线路自适应重合闸策略[J]. 电力建设, 2023, 44(5): 94-107.
LI Hao, XIE Chao, ZHOU Weiji, LI Fengting, YIN Chunya. Adaptive Reclosing Scheme for Wind Power Outgoing Line Using Partial-phase Reclosing[J]. ELECTRIC POWER CONSTRUCTION, 2023, 44(5): 94-107.
图10 瞬时性两相短路时故障相与重合相基波电压差有效值
Fig.10 Root mean square of voltage fundamental component’s difference between fault phase and reclosing phase in transient phase-to-phase fault
图11 永久性两相短路时故障相与重合相基波电压差有效值
Fig.11 Root mean square of voltage fundamental component’s difference between fault phase and reclosing phase in permanent phase-to-phase fault
图A3 瞬时性三相短路故障相与重合相基波电压差有效值
Fig.A3 Root mean square of voltage fundamental component’s difference between fault phase and reclosing phase in transient three-phase short circuit fault
图A4 永久性三相短路故障相与重合相基波电压有效值
Fig.A4 Root mean square of voltage fundamental component’s difference between fault phase and reclosing phase in permanent three-phase short circuit fault
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