A Study on Maintenance Scheduling of Thermal Units

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  • 火力発電機群の定期補修計画に関する一解法
  • カリョク ハツデンキグン ノ テイキ ホシュウ ケイカク ニ カンスル イチカ

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Abstract

The maintenance schedule of thermal units is indispensable to prevent a power outage and also has a severe effect on not only reliability, but also stability and economy of power system operations. Under the current deregulation of power industry, the latter aspect of economy is becoming more important recently.<br> This paper proposes a new objective function by which an economic maintenance schedule is expected to be realized while satisfying reserve margin constraints. Furthermore, to evaluate the economic aspect of an obtained maintenance schedule more precisely, thermal unit commitment scheduling is carried out over two year scheduling period, where the load pattern is represented by the daily load characteristics.<br> The effectiveness of the proposed objective function is ascertained by comparison with the previously reported objective functions in terms of reliability, economy and the adaptability of application of solution methods, and the superiority of the proposed objective function is shown through various numerical examples.

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