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A reliable and practical reference objective
for the deviation diagnosis of energy system parameters |
| Liping LI,Zheng LI, |
| State Key Laboratory
of Power System, Department of Thermal Engineering, Tsinghua University,
Tsinghua-BP Clean Energy Center, Beijing 100084, China; |
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Abstract The core objective to optimize a complex energy system is to set the reference target to guide the parameter adjustment of system operation. In this paper, a new case-based approach is proposed based on an online performance assessment program and its long-term operation data for a large power unit. The online model of a coal-fired power unit’s performance assessment is demonstrated, and the distribution pattern of the performance index is revealed by statistical analysis of the abundant data. The fundamental issues (representation of the similarity of two thermal processes, similarity measure, etc.) are tackled. The key sections and key parameters for the completion of similarity determination are proposed, which are essential to realize a case-based strategy. A full-scope simulator of power unit is used to test the availability of the method. The advantage of the case-based approach is the integrality of information over other methods.
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| Keywords
energy system
case-based
optimization
power unit operation
performance
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Issue Date: 05 December 2009
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