Abstract

The load model and its parameters have great effect on the accuracy of power system simulation. This paper proposed a method of real-timely collecting load data based on intelligent measuring equipment, charring out the bottom-up accurate modeling of power load under cyber physical system (CPS) environment. Using intelligent measuring equipment as online measurement and identification device, identified load model on different voltage levels based on online load data, and established the aggregated load model using the weighting-mean method based on the capacity. Finally, considering the distribution system parameter, established the integrated load model of 220/110kV bus by gradually converting. Proposed method can realize real-time dynamical update of power load model, and improve the accuracy of power system simulation. Simulation indicated that the load model obtained by proposed method can better reflect the load dynamic characteristics compared to the traditional overall identification method.

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