| 发明名称 |
Islanding detection method and system |
| 摘要 |
The present invention provides an islanding detection method and an islanding detection system. The method includes: acquiring a voltage signal at a grid-connected node of a power generation system, and extracting phase information of the voltage signal; constructing a slip-mode frequency shift islanding detection curve in the form of a quadratic function according to the phase information; and generating a disturbance signal according to the slip-mode frequency shift islanding detection curve, and sending the disturbance signal to an inverter of the power generation system. The method and system can avoid a non-detection zone, and can perform an inverter islanding detection in a fast and accurate manner under simple control. |
| 申请公布号 |
US9170306(B2) |
申请公布日期 |
2015.10.27 |
| 申请号 |
US201213876914 |
申请日期 |
2012.11.06 |
| 申请人 |
BOE Technology Group Co., Ltd.;Beijing BOE Energy Technology Co., Ltd. |
发明人 |
Zheng Ping;Cui Ming;Zhao Peng;Wang Xuyang;Yang Peihuan |
| 分类号 |
G01R31/40;H02J3/38 |
主分类号 |
G01R31/40 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An islanding detection method, comprising:
acquiring a voltage signal at a grid-connected node of a power generation system, and extracting phase information of the voltage signal; constructing a slip-mode frequency shift (SMS) islanding detection curve in the form of a quadratic function based on the phase information; and generating a disturbance signal based on the SMS islanding detection curve, and sending the disturbance signal to an inverter of the power generation system. |
| 地址 |
Beijing CN |
