Method and apparatus for improving steam temperature control

Details Method and apparatus for improving steam temperature control Method and apparatus for improving steam temperature control

2006-09-19

2006-09-19

Paschall, Mark (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S494000, C122S379000, C431S003000

Reexamination Certificate

active

07109446

ABSTRACT:
A system for analyzing the impact of operating soot blowers in a heat transfer section of a power plant determines a steam temperature influencing sequence and calculates a feed-forward signal to be applied to a steam temperature control system of the heat transfer section. The system operates a group of soot blowers for a number of times and collects quantitative data related to the steam temperature during and after each soot blowing operation. A computer program used by the system analyzes the quantitative data, generates a number of statistical parameters for evaluating the impact of operating the soot blowers according to a given sequence on the steam temperature, and determines whether the given sequence is a steam temperature influencing sequence. Consequently, the system determines a feed-forward signal based on the steam temperature influencing sequence and applies the feed-forward signal to a steam temperature control system used by the heat transfer section to compensate for any adverse impact of soot blowing.

REFERENCES:
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patent: 4615302 (1986-10-01), Wynnyckyj et al.
patent: 4996951 (1991-03-01), Archer et al.
patent: 5615953 (1997-04-01), Moskal
patent: 6758168 (2004-07-01), Koskinen et al.

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