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A hybrid method of incorporating extended priority list into equal incremental principle for energy-saving generation dispatch of thermal power systems

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  • Cheng, Chuntian
  • Li, Shushan
  • Li, Gang

Abstract

The energy-saving generation dispatch (ESGD) policy released by Chinese Government in 2007 is a new code for optimally dispatching electric power generation portfolio in the country with the dual objectives of improving energy efficiency and reducing environmental pollution. The ESGD is substantially different from the competitive market in the developed economies, the traditional economic dispatching or the rational dispatching principle implemented in China prior to the new policy. This paper develops a hybrid method that integrates the extended priority list (EPL), the equal incremental principle (EIP) and a heuristic method to optimize daily generation schedules under ESGD. The EPL is presented to search desirable units set that satisfies the complicated duration period requirements based on thermal unit generation priority list. The EIP is developed to allocate load among the committed units within the combined set. A heuristic method is proposed to deal with inequality constraints, which usually result in difficulty for power allocation, and used to improve these results. The algorithm has been embedded into a newly developed decision support system that is currently being used by operators of the Guizhou Province Power Grid to make day-ahead quarter-hourly generation schedules.

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  • Cheng, Chuntian & Li, Shushan & Li, Gang, 2014. "A hybrid method of incorporating extended priority list into equal incremental principle for energy-saving generation dispatch of thermal power systems," Energy, Elsevier, vol. 64(C), pages 688-696.
    • Handle: RePEc:eee:energy:v:64:y:2014:i:c:p:688-696
    DOI: 10.1016/j.energy.2013.10.044
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