公开(公告)号：US09494635B2

公开(公告)日：2016-11-15

申请号：US14501912

申请日：2014-09-30

Applicant: ABB TECHNOLOGY AG

Inventor： Hannu Laaksonen

IPC: G01R31/02 ,  G01R31/40 ,  H02J3/38

CPC classification number: G01R31/02 ,  G01R31/40 ,  H02J3/38 ,  H02S50/00

Abstract: A device is disclosed for detecting an islanding condition in an electricity distribution network, by receiving a signal of the electricity distribution network, and determining an islanding condition based on the received signal. The device determines a voltage total harmonic distortion change parameter for each phase component in the received signal, determines a voltage unbalance change parameter in the received signal, compares each of the voltage total harmonic distortion change parameters and the voltage unbalance change parameter to respective triggering conditions, and concludes an islanding condition to have been detected when the voltage total harmonic distortion change parameter for each phase component of the signal and the voltage unbalance change parameter fulfill their respective triggering conditions.

Abstract translation: 公开了一种用于通过接收配电网络的信号并且基于接收到的信号来确定孤岛状态来检测配电网络中的孤岛状态的装置。 该装置确定接收信号中每个相位分量的电压总谐波失真变化参数，确定接收信号中的电压不平衡变化参数，将每个电压总谐波失真变化参数和电压不平衡变化参数相比较到各个触发条件 并且得出当信号的每个相位分量的电压总谐波失真变化参数和电压不平衡变化参数满足其各自的触发条件时已经检测到的孤岛状态。

公开(公告)号：US20150015302A1

公开(公告)日：2015-01-15

申请号：US14501984

申请日：2014-09-30

Applicant: ABB TECHNOLOGY AG

Inventor： Hannu Laaksonen

IPC: G01R31/02 ,  G01R31/40

CPC classification number: G01R31/02 ,  G01R31/40 ,  H02J3/38 ,  H02J2003/388 ,  H02S50/00

Abstract: A device for detecting an islanding condition in an electricity distribution network. The device comprises means for concurrently monitoring an islanding condition and a network event condition in the electricity distribution network, means for detecting an islanding condition in the power system network, and means for determining on the validity of detection of the islanding condition based on whether there is an associated network event with the detected islanding condition.

Abstract translation: 一种用于检测配电网络中的孤岛状态的装置。 该装置包括用于同时监视配电网络中的孤岛状况和网络事件状况的装置，用于检测电力系统网络中的孤岛状态的装置，以及用于基于是否存在孤岛状态来检测孤岛状态的有效性的装置 是具有检测到的孤岛状态的相关网络事件。