Characteristics of the dynamics of distribution electrical networks

This paper quantifies the characteristics of the distribution network dynamics by use of eigenvalue analysis. The study reveals that: (1) the parameters of the lines and cables, rather than the network topology, are the predominant factors to determine the distribution of the network eigenvalues; (2) the range of them is bounded by the relevant values of the lines and cables; (3) in a real distribution system in Europe, the real parts of the eigenvalues should be within −69.3 to −33,055, namely, the dynamic procedure of the network itself dies down to 5% of its initial value within less than 0.043 s and (4) thus after the integration of DG, adopting a steady state model to represent the distribution network is acceptable.