DocumentCode
2106935
Title
Notice of Retraction
Boiler Tube Leakage Acoustic Localization Error Analysis
Author
Peng Wang ; Liansuo An ; Genshan Jiang ; Guoqing Shen ; Yongxing Lu
Author_Institution
Key Lab. of Condition Monitoring & Control for Power Plant Equip. Minist. of Educ., North China Electr. Power Univ., Beijing, China
fYear
2010
fDate
28-31 March 2010
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Efficient and reliable operation is the main requirement of the modern power plant, hence it´s significant that the boiler tube leakage source is localized precisely. The four-element acoustic array was exploited in the furnace, a set of hyperbolic equations were established and the sensors distributed for capture the leakage signal were given. The stable and sharp peak can be obtained by an approximation of the maximum likelihood (ML) estimator, which was verified via the experiment on localization of leakage. The time differences of arrival (TDOA) error level was 0.1us, the array failed to fix position as the remarkable coordinate error, while the error level was 0.01us, the coordinates error was linearized and reduced to the permitted range (less than 1m).
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Efficient and reliable operation is the main requirement of the modern power plant, hence it´s significant that the boiler tube leakage source is localized precisely. The four-element acoustic array was exploited in the furnace, a set of hyperbolic equations were established and the sensors distributed for capture the leakage signal were given. The stable and sharp peak can be obtained by an approximation of the maximum likelihood (ML) estimator, which was verified via the experiment on localization of leakage. The time differences of arrival (TDOA) error level was 0.1us, the array failed to fix position as the remarkable coordinate error, while the error level was 0.01us, the coordinates error was linearized and reduced to the permitted range (less than 1m).
Keywords
acoustic signal processing; boilers; error analysis; leak detection; maximum likelihood estimation; time-of-arrival estimation; acoustic localization error analysis; boiler tube leakage source; coordinates error; four-element acoustic array; hyperbolic equations; maximum likelihood estimator; time differences of arrival error level; Acoustic arrays; Acoustic sensors; Boilers; Condition monitoring; Equations; Error analysis; Furnaces; Maximum likelihood estimation; Power generation; Sensor arrays;
fLanguage
English
Publisher
ieee
Conference_Titel
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location
Chengdu
Print_ISBN
978-1-4244-4812-8
Type
conf
DOI
10.1109/APPEEC.2010.5448980
Filename
5448980
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