Impact of Overexcitation Limiters on the Power System Stability Margin Under Stressed Conditions
Impact of Overexcitation Limiters on the Power System Stability Margin Under Stressed Conditions
复制标题
DOI：
10.1109/tpwrs.2015.2440559
复制
发表时间：
2016-05
影响因子：
6.6
通讯作者：
G. Anagnostou;B. Pal
中科院分区：
文献类型：
--
作者：
G. Anagnostou;B. Pal
本文研究了过励磁限制器（OELs）对电力系统在应力条件下运行的稳定裕度的影响。提出了几种OEL建模方法，并在电力系统模型中检验了它们的作用效果。人们意识到，行业中常用的现有动态安全评估工具往往无法检测到OEL的运行状态。研究发现，电场的识别和准确表征导致了瞬态稳定裕度的显著差异。无气味卡尔曼滤波用于检测OEL激活事件。在系统运行压力较大的情况下，这种定量评估对系统控制是非常有用的。通过对两个模型电力系统的详细研究，进一步加强了这种理解。
This paper investigates the impact of the overexcitation limiters (OELs) on the stability margin of a power system which is operating under stressed conditions. Several OEL modeling approaches are presented and the effect of their action has been examined in model power systems. It is realized that, more often than not, OEL operating status goes undetected by existing dynamic security assessment tools commonly used in the industry. It is found that the identification and accurate representation of OELs lead to significantly different transient stability margins. Unscented Kalman filtering is used to detect the OEL activation events. In the context of stressed system operation, such quantitative assessment is very useful for system control. This understanding is further reinforced through detailed studies in two model power systems.