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供热机组热电负荷最佳分配方法分析

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Keywords: 热电负荷,供热机组,变工况计算,负荷调度

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Abstract:

以变工况热力计算为基础,分段采用改进的弗留盖尔公式,分析供热机组的热力特性。通过具体机组进行验证,表明这种热力计算方法具有足够的精度。以实际机组为例,改进热电分离、以热定电的热电负荷分配方案。方案中考虑了热化作功系数的变化,直接以总热耗最小作为电负荷分配指标。同时,依据机组的热力特性,生成热电关系曲线,从而可以将热电负荷调度范围作为限制条件,使分配结果更加合理。通过对比可以发现,这种分配方法可以有效降低机组的总热耗,因而使分配结果明显优于其他方案。该方法可以为电厂与调度部门的负荷调度提供合理的解决方案。

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