Abstract

Development of power electronic devices and their implementation in power distribution networks significantly improve not only the easier integration of distributed generation into distribution networks but also the further refinement of control algorithms specialized in the application of power management procedures in distribution systems. Implementation of DC Soft Open Points (DCSOP) for closing loops in distribution networks could serve as one of the most representative examples of the use of power electronics devices as a management resources in modern distribution networks. The paper describes the possibilities of application of DCSOP used for loops closure and power flow control in medium voltage distribution networks with integrated distributed generators. Considering all benefits of loops closure and the controllability of the DCSOP, DCSOP has been considered as a management resource capable of achieving the desired/optimal state in the distribution network. The management strategy proposed in this paper covers two cases: the first case where adequate communication infrastructure is available when all DCSOP operation is based on Optimal Power Flow (OPF) calculations, and the second case when OPF results are unavailable for some reason (most often due to communication interruptions) and DCSOP operation is based on processing available data using neural network based algorithm. The proposed management strategy has been implemented and tested on the IEEE 33 distribution test network with integrated distributed generators. The simulation results, described in this paper, can serve not only as a basis for further scientific research but also as a basis for the practical implementation of real controllers based on the proposed algorithm and its application in practice, in real distribution networks.

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