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Cellular neural network based situational awareness system for power grids

机译:基于细胞神经网络的电网态势感知系统

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Situational awareness (SA) in simple terms is to understand the current state of the system and based on that understanding predict how system states are to evolve over time. Predictive modeling of power systems using conventional methods is time consuming and hence not well suited for real-time operation. In this study, neural network (NN) based non-linear predictor is used to predict states of power system for future time instance. Required control signals are computed based on predicted state variables and control set points. In order to reduce computation the problem is decoupled and solved in a cellular array of NNs. The cellular neural network (CNN) framework allows for accurate prediction with only minimal information exchange between neighboring predictors. The predicted states are then used in computing stability metrics that give proximity to point of instability. The situational awareness platform developed using CNN framework extracts information from data for the next time instance i.e. a step ahead of time and maps this data with geographical coordinates of power system components. The geographic information system (GIS) provides a visual indication of operating status of individual components as well as that of the entire system.
机译:简单来说,态势感知(SA)就是要了解系统的当前状态,并以此为基础来预测系统状态将随着时间变化的方式。使用常规方法对电力系统进行预测建模非常耗时,因此不适用于实时操作。在这项研究中,基于神经网络(NN)的非线性预测器用于预测未来时间实例的电力系统状态。根据预测的状态变量和控制设置点计算所需的控制信号。为了减少计算,在神经元的蜂窝阵列中将问题解耦并解决。蜂窝神经网络(CNN)框架允许在相邻预测变量之间仅进行最少信息交换的情况下进行准确预测。然后,将预测状态用于计算稳定性度量,该度量可提供到不稳定点的接近度。使用CNN框架开发的态势感知平台从下一次实例(即提前一步)的数据中提取信息,并将该数据与电力系统组件的地理坐标进行映射。地理信息系统(GIS)可以直观指示各个组件以及整个系统的运行状态。

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