Advantages of Using of the Topological Indices for the Distribution Networks Representation

Taking into account the particularities of the normal operation diagrams of the power distribution networks and using their topological representation by a set of topological (connectivity) indices, the paper describes the benefits of this kind of representation both for operation state calculus and for network restructuring after a load transfer from a feeder to another. In this context, based on author´s experience, an efficient procedure for attachment of the topological indices to the new configuration is discussed, and also is defined a function with its evaluation algorithm, useful for real time calculus and restructuring. This function allows identification of all the elements (electrical lines) of a feeder placed below of a given element, considering the direction of the active power flow. It is also useful for computation of some superposable electrical characteristics, such as power and current components, on any line of a given feeder, or of the current through tie-switch opening in a load transfer operation.