Improved coal grinding and fuel flow control in thermal power plants

Piotr Niemczyk, Jan Dimon Bendtsen

Research output: Contribution to journalConference article in JournalResearchpeer-review

5 Citations (Scopus)
931 Downloads (Pure)

Abstract

A novel controller for coal circulation and pulverized coal flow in a coal mill is
proposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.
Original languageEnglish
Book seriesProceedings of the 18th IFAC World Congress, 2011
Number of pages6
ISSN1474-6670
Publication statusPublished - 28 Aug 2011
Event18th IFAC World Congress - Milano, Italy
Duration: 28 Aug 20112 Sep 2011

Conference

Conference18th IFAC World Congress
CountryItaly
CityMilano
Period28/08/201102/09/2011

Fingerprint

Flow control
Power plants
Coal
Controllers
Electric power utilization
Boiler circulation
Flow measurement
Control theory
Hot Temperature
Classifiers

Keywords

  • Power system modeling
  • Power system control

Cite this

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title = "Improved coal grinding and fuel flow control in thermal power plants",
abstract = "A novel controller for coal circulation and pulverized coal flow in a coal mill isproposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.",
keywords = "Power system modeling, Power system control",
author = "Piotr Niemczyk and Bendtsen, {Jan Dimon}",
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month = "8",
day = "28",
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journal = "I F A C Workshop Series",
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Improved coal grinding and fuel flow control in thermal power plants. / Niemczyk, Piotr; Bendtsen, Jan Dimon.

In: Proceedings of the 18th IFAC World Congress, 2011, 28.08.2011.

Research output: Contribution to journalConference article in JournalResearchpeer-review

TY - GEN

T1 - Improved coal grinding and fuel flow control in thermal power plants

AU - Niemczyk, Piotr

AU - Bendtsen, Jan Dimon

PY - 2011/8/28

Y1 - 2011/8/28

N2 - A novel controller for coal circulation and pulverized coal flow in a coal mill isproposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.

AB - A novel controller for coal circulation and pulverized coal flow in a coal mill isproposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.

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KW - Power system control

M3 - Conference article in Journal

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JF - I F A C Workshop Series

SN - 1474-6670

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