Abstract—

The wide-area situational awareness attempts to detect the imminent system instability quickly and alerts the operator to initiate appropriate control action. Faults on the transmission line may result in interruption of power and substantial economic losses. Thus, their situational awareness assessment is very much critical, especially when the power sector is targeting reliability of 99.9999%. Phasor measurement units were introduced to increase the operator's situational awareness of the power network. A schematic representation of situational awareness (SA) of transmission line having three hierarchical levels has been developed. Based on the schematic representation which reveals the relationship between the hierarchical levels and the modules, a fault tree has been developed. The situational awareness index (SAI) of individual modules has been allocated based on their relative significance to the preferences of various user classes. With the help of minimal cut set and fault tree approach, the SAI of transmission line has been developed. The proposed work provides a quantitative approach for assessing transmission line SA and, therefore, plays a vital role in the power sector.

摘要-

广域态势感知试图快速检测即将发生的系统不稳定并提醒操作员启动适当的控制行动。输电线路故障可能导致电力中断和重大经济损失。因此，他们的态势感知评估非常关键，特别是当电力部门的目标是 99.9999% 的可靠性时。引入了相量测量单元，以提高运营商对电网的态势感知能力。已经开发了具有三个层次级别的传输线的态势感知 (SA) 的示意图。基于揭示层次级别和模块之间关系的示意图，开发了故障树。各个模块的态势感知指数 (SAI) 已根据它们对各种用户类别的偏好的相对重要性进行分配。借助最小割集和故障树方法，​​开发了输电线路的SAI。拟议的工作为评估输电线路 SA 提供了一种定量方法，因此在电力部门发挥着至关重要的作用。