Alstom Technology Limited

General Electric Technology Gmbh

Julia Heintz

Volker Schüle

Ewald Kitzmann

Angie Ewert

Benjamin Bond

Stephan Hellweg

A steam power plant is suggested having, parallel to the high-pressure preheater passage (VWto VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the high-pressure preheater passage (VWto VW) into the condensate line () resp. the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Steam power plant with high-temperature heat reservoir

A steam power plant is suggested having, parallel to the low-pressure passage (VWto VW), a heat reservoir (A) which is loaded with preheated condensate in weak-load times. This preheated condensate is taken from the heat reservoir (A) for generating peak-load and inserted downstream of the low-pressure preheater passage (VWto VW) into the condensate line that contacts the feed water container (). Thus it is possible to quickly control the power generation of the power plant in a wide range without significantly having to change the heating output of the boiler of the steam generator (). A steam power plant equipped according to the invention can thus be operated with bigger load modifications and also provide more control energy.

Steam power plant with heat reservoir and method for operating a steam power plant

A method for operating a steam power plant at low load is suggested comprising the extraction of live steam LS before the last superheater SHand/or resuperheated steam before the last resuperheater RSHand using the thermal energy of this steam in other heat sinks. Thus, nearly constant steam parameters of the live steam LS are achieved and the overall efficiency of the steam power plant remains at a high level.

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Gernsheim, Germany

Julia Heintz