To reveal the relationship between coal type change and power plant comprehensive cost

this paper obtains the coal procurement cost

coal consumption cost

wear maintenance cost

auxiliary power cost and long-term other costs through statistical analysis and theoretical calculation

combining with the coal characteristics analysis

equipment maintenance data and unit operation parameters with long term statistics.The results show that

for two coals with calorific value deviation of 100kcal/kg

when their standard coal price difference is lower than 2.65yuan/t

the comprehensive cost of the coal with higher calorific value is lower;when their standard coal price difference is higher than 3.06yuan/t

the comprehensive cost of the coal with lower calorific value is lower.The conclusion can provide guidance for coal purchase in power plants.