The Rockport plant-system planning considerations

Planning studies are reported which were carried out to determine the required EHV transmission facilities associated with the 2600 MW coal-fired Rockport plant on the American Electric Power (AEP) system. This plant is located on the Ohio River in southern Indiana, about 100 miles from the nearest AEP transmission facilities and about 150-250 miles from the nearest AEP load centers. Due to the remote location of this plant site and the need to minimize construction of new facilities because of financial and environmental considerations, only two lines have been constructed to integrate this plant into the existing transmission network. The steady-state and dynamic performance of the plant and its associated transmission system are discussed, including the improvements in performance which have been achieved by installing single-phase switching on both plant transmission outlets and temporary fast turbine valving on both 1300 MW generating units