Black-start-up simulation of a repowered thermoelectric unit

During the last ten years, some of the Italian thermoelectric plants have b een repowered by topping the existing steam sections with gas turbines. To investigate the early restoration capabilities of these repowered plants af ter a blackout and to assess the requirements of the power plant control sy stem, a simulator has been built and has been validated by means of availab le measurements at power stations. The paper describes the simulator, the c ontrol system modifications and some simulation results outlining the effic iency of the repowered unit to reenergise part of the high-voltage transmis sion network. (C) 2001 Elsevier Science Ltd. All rights reserved.