Method and device for controlling the temperature of steam...

Details Method and device for controlling the temperature of steam... Method and device for controlling the temperature of steam...

Category

F - Mech Eng,Light,Heat,Weapons

Subcategory

22

Subsubcategory

G

IPC codes

F22G 5/12 (2006.01)

Type

Patent

Patent number

CA 2756259

Description

The invention relates to a method for controlling the temperature of steam (8) for a steam power plant (2), wherein a state controller (46), in order to output a desired steam temperature (~NKS) as a controlled variable, feeds back several steam states in a superheater (6) for superheating steam (8) using a monitor (42), which calculates said states, and the desired steam temperature (~NKS) is forwarded to a further controller (32) for controlling the temperature. In order to achieve a stable and accurate control of the steam temperature, it is proposed that the state controller (46) be a linear quadratic controller.

L'invention concerne un procédé de régulation de la température de la vapeur (8) pour une machine à vapeur (2). Un régulateur d'état (46), à l'aide d'un observateur (42) qui calcule ces états, renvoie plusieurs états de vapeur dans un surchauffeur (6) destiné à surchauffer la vapeur (8) afin de produire une température de consigne de la valeur (?NKS) servant de grandeur réglante, et la température de consigne de la valeur (?NKS) est transmise à un autre régulateur (32) afin de réguler la température. Afin d'obtenir une régulation stable et précise de la température de la vapeur, il est proposé que le régulateur d'état (46) soit un régulateur linéaire-quadratique.

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