Method for increasing the power output of a gas and steam combined cycle power plant during selected periods of operation.

摘要

A method for increasing the power output of a combined cycle power plant (2) with additional Kanalfeuerung of a heat recovery steam generator (HRSG) (12) during selected periods includes a performing a reheat steam flow to at least one reheat steam condenser (67, 68) which is connected in terms of flow to the HRSG while the selected time period. The method further includes a Zoom the reheat steam cooling water flow through the at least one reheat steam condenser (67, 68), reducing a set point temperature of at least one reheat steam radiator (67, 68) for the selected period on a lower setpoint temperature and increase the power output of the combined cycle power plant (2) during the selected period.