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公开(公告)号：EP2779351A2
公开(公告)日：2014-09-17
申请号：EP14159835.9
申请日：2014-03-14
发明人： Yuan, Zhenhuan , Zhang, Shaofeng , Lu, Haihui , Wei, Lixiang , Kerkman, Russel J. , Lukaszewski, Richard , Ahmed, Ahmed Mohamed Sayed , Breitzmann, Robert J.
IPC分类号： H02J3/38
CPC分类号： H02J3/382 , H02J3/386 , H02J2003/388 , Y02E10/763 , Y10T307/642
摘要： Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between generation and the grid load is formed upon the occurrence of unintentional islanding, where the applied phase disturbance is determined according to two pre-defined curves to form an equivalent positive feedback at different frequencies to prevent the converter from forming an island at a new stable frequency after the grid is disconnected.
摘要翻译： 的方法和装置提出了非故意孤岛检测电网连接转换器，其中，相位角扰动是由电网侧转换器的变形例中引入的开关控制信号，并且产生与电网负载之间无功功率的失配时无意的孤岛的发生被形成 ，其中施加的相位加扰是确定性的开采gemäß到两个预先定义的曲线而形成在不同的频率相当于正反馈，以防止转换器从电网断开后在冰岛在一个新的稳定的频率形成。
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公开(公告)号：EP2779351A3
公开(公告)日：2016-03-09
申请号：EP14159835.9
申请日：2014-03-14
发明人： Yuan, Zhenhuan , Zhang, Shaofeng , Lu, Haihui , Wei, Lixiang , Kerkman, Russel J. , Lukaszewski, Richard , Ahmed, Ahmed Mohamed Sayed , Breitzmann, Robert J.
IPC分类号： H02J3/38
CPC分类号： H02J3/382 , H02J3/386 , H02J2003/388 , Y02E10/763 , Y10T307/642
摘要： Methods and apparatus are presented for unintentional islanding detection for grid tie converters in which the phase angle disturbance is introduced by modification of grid side converter switching control signals and a mismatch of reactive power between generation and the grid load is formed upon the occurrence of unintentional islanding, where the applied phase disturbance is determined according to two pre-defined curves to form an equivalent positive feedback at different frequencies to prevent the converter from forming an island at a new stable frequency after the grid is disconnected.
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