Optimization of Energy Networks By the Extended P-Graph Framework

An extended P-graph methodology, with new mathematical model for the operating units, is introduced here for optimizing complex energy systems involving alternative energy sources. The energy consumption of the world has been on the rise. If the current trends continue, we can face energy shortag and serious environmental problems. One solution to this pressing issue is to complement the current energy systems with renewables whose environmental impact is significantly less damaging. The goal of this work is to determine the minimal cost for an energy production system while considering the energy demands and emission constraints.

Friedler et al. have elaborated a methodology called the P-graph framework for solving PNS (process network synthesis) problems. The representation is based on bipartite graphs and it is suitable for modeling and designing production systems and energy supply systems. This work details the extension of the mathematical model of operating units in the P-graph framework.