基于改进TOPSIS法的火电厂混煤掺烧方案选择

The Choice of Mixed Coal Combustion Scheme for Thermal Power Plant Based on Improved TOPSIS Method

为了使发电成本降低,当今火电厂大多都采用混煤掺烧的技术,如何确定合理的掺烧比例是发电行业亟待解决的问题之一。提出一种改进TOPSIS法的混煤掺烧方案选择方法,分析灰分、挥发分、着火温度、灰熔点、发热量和成本6个性能指标,采用粒子群优化算法来确定各个指标的权重,综合考量了8种预选方案的经济收益和社会效益,从中选择出最合适的配比方案。

In order to reduce the cost of power generation,most thermal power plants use mixed coal combustion technology.How to determine a reasonable blending ratio is one of the urgent problems to be solved in the power generation industry.In order to solve this problem,a method of mixed coal blending scheme selection based on TOPSIS method is proposed in this paper.Six performance indexes,ash content,volatile matter,ignition temperature,ash melting point,calorific value and cost,are investigated.Particle swarm optimization(PSO) algorithm is used to determine the weight of each index.The economic and social benefits of the eight pre-selection schemes are comprehensively considered,and the most suitable matching scheme is selected.