Analysis of interconnected power systems by hybrid calculation

Abstract

Distributed Energy Resources (DERs) are being added to the existing power supply systems to compensate for the growing electricity demand. This results in new power supply systems such as mini-grids and micro-grids being implemented into existing grids. In order to manage and optimize the operation of these new systems, power system analysis is utilized. However, the analysis model structure has to be recreated, once a new system joins the existing system. This results in an increased complexity of power system analysis, which calls for its simplification. The objective of this paper is to present a power system analysis method, which does not require restructuring of the analysis model in order to simplify the analysis of interconnected power systems. Hybrid calculation is applied in order to analyze the grid connecting points. This results the proposed analysis method can be performed by exchanging several parameters between the grid connecting points. The simulation results of the proposed method are compared with the general analysis in order to provide proof that the proposed method can be utilized as the general analysis method.