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1. 发明授权

US06249719B1 Applications and methods for voltage instability predictor (VIP) 有权
标题翻译：电压不稳定性预测器（VIP）的应用与方法
公开(公告)号：US06249719B1
公开(公告)日：2001-06-19
申请号：US09333185
申请日：1999-06-14
申请人： Khoi Tien Vu , Danny E. Julian , Jan Ove Gjerde , Murari M. Saha
发明人： Khoi Tien Vu , Danny E. Julian , Jan Ove Gjerde , Murari M. Saha
IPC分类号： G05D500
CPC分类号： H02J3/12 , H02J3/00 , H02J3/24 , H02J2003/001
摘要： A Voltage Instability Predictor (VIP) estimates the proximity of a power system to voltage collapse in real time. The VIP can be implemented in a microprocessor-based relay whose settings are changed adaptively to reflect system changes. Only local measurements (voltage and current) at the bus terminal are required. The VIP detects the proximity to collapse by monitoring the relationship between the apparent impedance {overscore (Z)}app and the Thévenin-impedance. In addition, we disclose: (1) that the VIP may be used in connection with non-radial topologies; (2) a new, more robust method to track voltage collapse in terms of impedance using rolling sums; and (3) a new method for representing distance to voltage collapse in terms of power margins.
摘要翻译：电压不稳定性预测器（VIP）估计电力系统与电压崩溃的实时接近。 VIP可以在基于微处理器的继电器中实现，其设置自适应地改变以反映系统变化。只需要总线端子的局部测量（电压和电流）。 VIP通过监测视在阻抗（overscore（Z）} app和Thévenin-impedance之间的关系来检测邻近的崩溃。此外，我们披露：（1）VIP可能与非径向拓扑结合使用; （2）使用滚动和来跟踪阻抗方面的电压崩溃的新的，更鲁棒的方法; 和（3）在功率裕度方面表示距离电压崩溃的新方法。

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