Power networks´ robustness oriented extension

The safety of power networks is formulated in terms of probability, considering the failure processes as inherent stochastic events of large systems. This approach is important to design reliable power systems based on some optimal values for the system´s availability and the involved costs. The vulnerability expressed visa the disturbances initiated by natural disasters, adverse weather, technical failures, human errors, sabotage, terrorism, and acts of war. Hence, the system´s vulnerability is described as a sensitivity to threats and hazards, and it´s measured by negative societal consequences, affecting large human communities. In this approach, the robustness is the network´s capacity to support random destroying experiences. Today, one general accepted approach in the vulnerability quantification is made in terms of scale-free network, networks having the capability to conserve their robustness. Our paper formulates some proposals on the enlargement of the electrical distribution networks resulting from the old and the new, enlarged network properties. As a first step in our study we´ll try to formulate appropriate methods for optimal adjustments, intending to transform a not-robust networks to the nearest free-scale, robust network.