月刊
ISSN 1000-7229
CN 11-2583/TM
电力建设 ›› 2022, Vol. 43 ›› Issue (6): 56-65.doi: 10.12204/j.issn.1000-7229.2022.06.006
• 直流电网关键装备·栏目主持 宋强副教授、余占清副教授、赵彪副教授 • 上一篇 下一篇
张朝峰1(), 张伟晨2, 饶宇飞1, 夏秋2, 李程昊1, 鲍超斌2
收稿日期:
2022-02-07
出版日期:
2022-06-01
发布日期:
2022-05-31
作者简介:
张伟晨(1993),男,硕士,主要研究方向为特高压交直流混联电网的稳定运行分析与控制基金资助:
ZHANG Chaofeng1(), ZHANG Weichen2, RAO Yufei1, XIA Qiu2, LI Chenghao1, BAO Chaobin2
Received:
2022-02-07
Online:
2022-06-01
Published:
2022-05-31
Supported by:
摘要:
换相失败是特高压直流输电系统的常见故障之一,常在送、受端交流电网引起剧烈的无功波动。投入旁通对是对直流系统进行保护的重要控制措施之一。当直流输电系统发生故障时,逆变侧保护装置动作后投入旁通对有助于达到快速停运直流输电系统,隔离故障的目的。而现在有关旁通对的研究多集中于其在直流故障中的应用,关于其在换相失败问题中的应用研究较少。通过分析旁通对控制对特高压直流输电系统送、受端电压特性的影响,论证了旁通对控制策略对换相失败后整流侧过电压、逆变侧低电压的改善作用。进而提出了一种换相失败后投旁通对的控制方法,以逆变阀组换相失败及交流电压跌落程度为旁通对控制的启动判据,根据直流运行状态对直流电流进行动态调节,然后根据受端交流系统恢复程度退出旁通对。PSCAD/EMTDC仿真表明,所提旁通对控制器在交流故障导致特高压直流换相失败后,能够起到快速隔离交直流系统、减轻无功电压波动的控制效果。
中图分类号:
张朝峰, 张伟晨, 饶宇飞, 夏秋, 李程昊, 鲍超斌. 一种抑制多馈入特高压直流换相失败的投旁通控制策略[J]. 电力建设, 2022, 43(6): 56-65.
ZHANG Chaofeng, ZHANG Weichen, RAO Yufei, XIA Qiu, LI Chenghao, BAO Chaobin. A Bypass Pair Control Strategy for Commutation Failure Mitigation in Multi-infeed DC System[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(6): 56-65.
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