Economic Operation of Long Distances Power Networks Using On-line Control of Superconducting Magnetic Energy Storage

This paper investigates a two-purpose application for the superconducting magnetic energy storage (SMES) in order to remove its economic barriers for a wide spread promotion in power systems. A practical realization of the control method using the locally measurable signals is considered. A simulation case study is conducted to verify the performance of the proposed application. The results prove that the proposed method results in an improvement in the system loadability without any degradation in other system indices. The economics of the two-purpose SMES shows a considerable reduction in costs when it is compared with the one-purpose one. Based on the sensitivity analysis, future success in SMES investment reduction will lead to peak energy providing by SMES units with a cost lesser than the gas turbines.