Abstract
This paper describes a new methodology for grid expansion planning considering the probabilistic reliability of a Bulk Electric Systems (BES) including Wind Turbine Generators (WTG) and Energy Storage System (ESS).The proposed model includes the main parameters used to create an operational history for each individual unit and transmission line unavailability. Bulk electric system reliability analysis associated with wind energy provides an opportunity to investigate the reliability benefits when large-scale wind power is injected in a BES. High wind power penetration can lead to high risk levels in the overall system reliability. The impacts of different wind turbine penetration levels on the reliability benefits from ESS are analyzed when the WTG capacity is utilized to replace the conventional generators with same total rated power capacity. The WTG and ESS capacity are installed to meet the annual growth of load demand and maintain the BES adequacy levels. The proposed method is applied to the IEEE Reliability Test System (IEEE– RTS ).
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