An allocation of wheeling costs in power systems with FACTS devices

This paper presents an index for evaluating the contribution of flexible AC transmission system (FACTS) devices to relief of network congestion under an open access network environment. Since the proposed index can be obtained for each wheeling which causes the congestion, the cost for controlling FACTS devices can be allocated adequately considering the responsibility for the congestion. The characteristics of the proposed index are investigated using a revised IEEE 14-bus test system in details.