Good Unit commitment is the basic condition of ensuring the security, economy and environmental protection of generation dispatching in the patter of energy-saving generation dispatching, so the research on unit commitment problem has important theoretical significance and practical value. 在节能发电调度模式下,良好的机组组合是保证发电调度安全、经济和环保的前提条件,机组组合问题的研究具有重要的理论意义和实用价值。