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  • Volume 16, Issue 3

Leakage discharge separation from the total water supply flow in water distribution system by constrained independent component analysis (CICA)

Chengzhi Zheng, Jinliang Gao, Wenjie He
Published June 2016, 16 (3) 611-619; DOI: 10.2166/ws.2015.169
Chengzhi Zheng
School of Municipal and Environmental Engineering, Harbin Institute of Technology; Box 2624, Harbin Institute of Technology, Yellow River Road No.73, Harbin, Heilongjiang Province 150090, China E-mail: buye3000@163.com
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Jinliang Gao
School of Municipal and Environmental Engineering, Harbin Institute of Technology; Box 2624, Harbin Institute of Technology, Yellow River Road No.73, Harbin, Heilongjiang Province 150090, China E-mail: buye3000@163.com
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Wenjie He
School of Municipal and Environmental Engineering, Harbin Institute of Technology; Box 2624, Harbin Institute of Technology, Yellow River Road No.73, Harbin, Heilongjiang Province 150090, China E-mail: buye3000@163.com
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Abstract

The blind source separation theory was introduced and the trend and amplitude (TAA) model was established in order to overcome the shortcomings of some traditional global leakage discharge analysis models in water distribution systems (WDS). The TAA model considers the leakage discharge as one part of the total water supply flow, consisting of constrained independent component analysis (CICA) model and amplitude solving model. In the CICA model, the CICA algorithm was chosen and two reference vectors were constructed, and then the trend of leakage discharge was obtained. In the amplitude solving model, the two-element coupled linear overdetermined equations were derived and the amplitude was calculated. The TAA model was optimized and verified based on the data from three kinds of WDS (the laboratory WDS, the emulational WDS and the actual WDS). The simulation accuracy of the TAA model was high enough when the total water supply flow was a non-Gaussian signal in the WDS with one entrance only; the TAA model can effectively avoid the complexity (and reflect the uncertainty) of the relationship between leakage discharge and pressure head. More importantly, the model has good transplant performance.

  • blind source separation (BSS)
  • constrained independent component analysis (CICA)
  • leakage
  • water distribution system (WDS)
  • water loss
  • First received 8 June 2015.
  • Accepted in revised form 9 November 2015.
  • © IWA Publishing 2016
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Water Science and Technology: Water Supply: 18 (2)
  Volume 16, Issue 3

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Leakage discharge separation from the total water supply flow in water distribution system by constrained independent component analysis (CICA)
Chengzhi Zheng, Jinliang Gao, Wenjie He
Water Science and Technology: Water Supply Jun 2016, 16 (3) 611-619; DOI: 10.2166/ws.2015.169
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Leakage discharge separation from the total water supply flow in water distribution system by constrained independent component analysis (CICA)
Chengzhi Zheng, Jinliang Gao, Wenjie He
Water Science and Technology: Water Supply Jun 2016, 16 (3) 611-619; DOI: 10.2166/ws.2015.169

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    • Abstract
    • INTRODUCTION
    • METHODOLOGY
    • MODELING
    • OPTIMIZATION AND VALIDATION OF TAA MODEL
    • DISCUSSION OF TAA MODEL
    • CONCLUSIONS
    • ACKNOWLEDGEMENTS
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Keywords

blind source separation (BSS)
constrained independent component analysis (CICA)
leakage
water distribution system (WDS)
water loss
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