Distribution System Reconfiguration Considering DGs’ Small Signal Stability

Abstract

The emerging of the distributed generations in the distribution network changes the structure of the network, which used to operate without generations. However, the locations of these DGs are fixed when performing the distribution reconfiguration, which may contribute to the stability problem. The small signal stability of theses DGs in the distribution reconfiguration hasn’t been well considered in the literature. This paper establishes the small signal model of the distribution system considering the dynamic model of these DGs, and proposes a model which aims to decrease the power loss of the system on the basis of guaranteeing the small signal stability. The IEEE 33 system is used to verify the rationality of this model.