Optimization of electrical distribution networks fed by conventional and renewable energy sources

This paper provides a methodology for the optimization of an existing elect rical distribution network when upgraded by renewable energies. The contrib ution of renewable energy in electricity generation is decided upon through both network design optimization and proper load management whereby applic ations that can be satisfied by non-electrical means are separated from the main load. The remaining load will then be satisfied by an optimal mix of renewable energy which will be injected to the existing grid. The proposed problem will be formulated using multiobjective linear programming in conju nction with fuzzy logic. It will be shown that optimization using fuzzy log ic can provide decision makers with more flexibility that would assist them in the allocation of various energy resources to optimally meet the variou s end uses and solve the problem of renewable energy connection to existing distribution networks. Copyright (C) 1999 John Wiley & Sons, Ltd.