An Aggregate Network Model Acquired by Elimination of Frequency Dependent Load Nodes

This paper presents a new methodology for creation of an aggregate electrical network model by means of elimination voltage and frequency dependent load nodes. Thereby, this methodology allows eliminating all load nodes of distribution network, for example on the middle voltage, taking into account its load characteristics dependent on voltage and frequency. Authors proposed methodology is based on Jordan’s elimination that allows automatically to join electrical losses in the eliminated branches to the aggregate loads. The technique described above can be applied for the reduction of large power networks. The obtained aggregate load characteristics fully keep the system behavior in steady state and transient process of the all eliminated loads. Results of case studies are presented using Eurostag software