Influence of Local Reactive Power Control on the Quality of Grid Topology Identification

Due to the increasing integration of decentralised generation plants and new types of consumers, distribution grid operators must switch to active grid operation based on digital grid models, which in many cases are not known in sufficient quality. Therefore, different methods for measurement-based topology identification are currently being developed. In order to develop and test these methods, realistic synthetic measurement data is required that represents the characteristics of different grid users. This paper presents a method for the creation of realistic, synthetic measurement data, which in particular represents the reactive power control of PV systems accordingly, and quantifies the influence of Local Reactive Power Control on a method for topology identification based on voltage correlation analysis. The results demonstrate that the algorithm is sensitive to the consideration of different local reactive power control strategies, explicitly indicating the relevance of representing the active and reactive power behaviour of grid users accordingly when creating synthetic data sets.