On-line security assessment and control-probabilistic versus deterministic operational criteria

摘要

This paper presents a novel approach to electric power transmission system operation and on-line security control. The approach is based on a probabilistic criterion aiming at on-line minimization of th e toal grid operating cost defined as the sum of expected interruption costs and constraint (bottleneck) costs in a specified period of operation. The probabilistic criterion is described and illustrated by an example based on a case study from the Norwegian transmission grid. Preliminary conclusions show that this approach is technically feasible, and that significant savings in grid operation costs can be achieved.