Description

In this proposed system is design a fast response distributed battery energy storage system under post contingency corrective control actions. Immediately after contingency, then injection soft distributed batteries could be adjusted to alleviate over loads and reduce flows below their short –term emergency rating. This ensures that the post –contingency system remains stable until the operator has re dispatched the generation. Implementing this form of corrective control would allow operators to take advantage of the difference between the short- and long-term ratings of the lines and would therefore increase the available transmission capacity. This problem is formulated as a two-stage, enhanced security-constrained OPF problem, in which the first-stage optimizes the pre-contingency generation dispatch, while the second-stage minimizes the corrective actions for each contingency. Case studies based on a six-bus test system and on the RTS 96 demonstrate that the proposed method provides effective corrective actions and can guarantee operational reliability and economy.