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文章摘要
αβ轴下的双环电流负反馈控制孤岛检测
Islanding Detection based on double-loop current negative feedback Control under αβ Axis
Received:September 24, 2019
Revised:September 24, 2019
DOI：
10.19753/j.issn1001-1390.2020.04.026
中文关键词
:
被动孤岛检测法
电流负反馈控制；αβ坐标系；瞬时功率理论；
英文关键词
:
基金项目
:
Author Name
Affiliation
E-mail
Zhao Qian
Jiaozuo Power supply Bureau of Henan Electric Power Company of State Power Network
2114132154@qq.com
hudandan
Henan Jiaozuo Power supply Bureau of National Power Network
198165144@qq.com
Xu Hao
Henan Jiaozuo Power supply Bureau of National Power Network
2981919678@qq.com
Li Zhongliang
Henan Jiaozuo Power supply Bureau of National Power Network
393298947@qq.com
zhouyuchen
*
Chongqing University
zyc19960803@outlook.com
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中文摘要
:
针对被动孤岛检测法的检测盲区较大，而主动孤岛检测法会对电能质量造成污染等问题，从控制策略入手，提出了电流双环负反馈控制的孤岛检测。由于孤岛前后的电流环传递函数发生改变，传统的控制策略难以检测出此变化；双环电流负反馈控制下的电流环反馈函数由于引入了谐振环节，改变了系统的闭环零极点，使得电流的动态调节时间变长，因此延长了系统从并网状态切换到孤岛状态的过渡时间。在过渡时间内，该方法的孤岛检测因数(Islanding Detection Factor, IDF)发生较大变化，通过比较IDF与阈值大小来判断是否孤岛发生。由于一些非孤岛行为也会造成IDF的变化，因此通过Matlab仿真环境模拟了三类非孤岛行为和五类孤岛行为，以验证该方案的有效性。仿真结果表明该方案可以快速地检测出孤岛现象，并且有效地识别出非孤岛行为，避免发生误检测。
英文摘要
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