大型发电机组供热的相对经济效益评估方法及应用

Application of The Relative Economic Benefit Evaluation Method for District Heating of Large Generation Units

对大型火力发电机组供热成本计算中涉及的理论问题进行了阐述,提出了供热的相对经济效益评估方法。理论分析表明,这种评估方法可以客观地提供电厂供热工况下运行经济效益,并且与不同的热电热量分配方法无关。以某600MW实际机组为例进行了详细的供热经济效益评估计算。分析结果表明,对于某一确定的供热机组,存在某一对外供热量的盈亏平衡点,在低于此供热量的状态下运行时机组的供热效益为负值。

The theoretical calculation involved in the district heating cost of the existing large fossil fired generation units was described, and the relative economic benefit evaluation method for district heating was put forward. It is shown that this method can provide objective economic＇ benefit of district heating operation conditions, and the benefit has no relationship with the concrete distribution method used for heating and electricity. A economic benefit evaluation analysis example for a existing 600MW unit was put forward in detail. It is shown that, there is a balance heating supply operation condition for the existing unit, and heating benefit is negative for operation conditions with lower heatin~ suoolv than the balance ooint.