Effect of voltage stability constraints and corrective control on pricing components

Electricity markets that have adopted nodal locational marginal pricing schemes decompose prices into three components. These components relate to generation, congestion and losses. The usual scheme of pricing follows the mandate that when the market clears, every node is assigned the same value for the generation component. And so it follows that the difference in price across any pair of nodes is because of the congestion and loss component. In this paper we examine the congestion component in the light of new constraints that will arise because of the transfer limits imposed by voltage stability across critical interfaces.