Optimum transient security constrained dispatch in competitive deregulated power systems

The ongoing deregulation of the energy market needs to consider commercial implications when generators are re-dispatched to eliminate potential transient instability after a contingency to ensure transient security. A further complication is that different candidate contingencies may motivate different re-dispatch strategies because the advanced (critical) generator group is different in each case, or the sensitivity of the stability margin to power exchanges between generators is different. This paper develops a generalized approach that attempts to address all of these important issues in competitive deregulated power systems.