Adaptive enumeration method for the optimal interconnection planning of isolated power systems

Abstract

The target of this work is the determination of the optimal solution in transmission expansion planning in the particular case of isolated systems involving dc interconnections. Therefore special attention is given to dc-links modelling aspects for steady state analysis, as well as security constraints relevant to small sized systems operation. Therein lies the first contribution of this work, namely in the incorporation of operating reserve related considerations and simplified dc-links models in isolated systems planning. The proposed method combines a Monte-Carlo simulation, which enables the probabilistic assessment of power system operation, with an adaptive enumeration technique which recurrently determines and evaluates investment scenarios of interest, based on suitable probabilistic indices. This constitutes the second contribution of this work, as a map of all meaningful solutions to the planning problem may be generated, which in turn allows not only the determination of the optimal solution, but also the evaluation of the effects of over-or under-investment in certain parts of the grid.

Pareto Optimal Allocation of Flexible Fault Current Limiter Based on Multi-Objective Improved Bat Algorithm

“…At present, the solution techniques for their location and capacity optimal problems are attained via traditional mathematical programming methods or intelligent methods. However, with the increase of computational complexity and research scope, the conventional enumeration method cannot find the optimal solution [7]. In [8], an iterative mixed integer nonlinear programming approach is introduced to solve the optimal location and sizing of FCLs in mesh networks, which minimizes the total installed cost.…”

Impact of Thera and Crete interconnection on their economic operation

“…During the past years, quite a lot of plans for interconnecting Aegean Sea islands among them and with the mainland Greece have been presented [1,2] while proposed methodology for transmission system reinforcement including such an interconnection has been provided in [3]. Their main scope is to exploit the rich renewable energy sources (RES) potential of the islands and improve reliability of supply with reduced operational costs.…”