Verfahren zum Betrieb eines Kraftwerks

Details

Veröffentlichungs-Nr.

EP2642089

Aktenzeichen

EP12160093

Anmeldetag

19. März 2012

Veröffentlichung

24. August 2016

Erteilung

24. August 2016

Rechtsraum

EP

IPC

F01K9/02F01K9/00F01K13/02

Abstract

The invention relates to a method for operating a steam power plant, particularly a combined cycle power plant (10), which comprises a steam/water cycle (20) with a heat recovery steam generator (16), a water-cooled condenser (21), a feedwater pump (26) and a steam turbine (17,18,19), whereby a cooling water pump (22) is provided for pumping cooling water through said water-cooled condenser (21), and evacuating means (25) are connected to said water-cooled condenser (21) for evacuating at least said water-cooled condenser (21) The inventive operating method is related to a shut down and start-up of said power plant (10) after said shut down and comprises the steps of: a) shut down of the steam turbine (17,18,19); b) restoration of a good vacuum within the condenser (21) by using said evacuating means (25); c) stopping said cooling water pump (22) of said water-cooled condenser (21) and said evacuating means (25), and filling up at least said condenser (21) with steam up to slightly above atmospheric pressure; d) controlling the pressure with a flow of said cooling water; e) after a certain shut-down period starting the cooling water pump (22) just before start-up of the plant (10); f) starting the plant (10).

Anmelder

Firmen

General Electric Technology GmbH
Alstom Technology Ltd

Land

🇨🇭 Schweiz

Fachgebiete