Research on the impact of the electricity spot market on the energy economic benefits of thermal power units
YANG Jian
ZHANG Wei
GAO Xinyong
FENG Yiwu
Abstract：A variable operating condition model of a 330 MW pure condensing and cogeneration unit is established.The energy consumption characteristics,operational flexibility and marginal coal consumption of the unit are calculated and analyzed.Combined with the local power market rules,the profitability of the two types of units is explored.The results show that when the heat load is 400 GJ/h and the power generation load rate is 80%,the marginal coal consumption rate of the cogeneration unit is 3.06 g/kWh lower than that of the pure condensing unit,but its peak shaving load range is smaller than that of the pure condensing unit.Taking into account the marginal coal consumption rate and the peak shaving load range comprehensively,on the typical peak shaving day,the pure condensing unit can make an additional profit of 68 800 yuan compared with the cogeneration unit.
Keywords：electricity spot marketpure coagulation unitcombined heat and power unitthermal power uniteconomic benefit
Publication Date：2025-06-25
Online Publishing Date：2025-09-01(First online date of this platform, not the publication date of the document)
Pages：5( 18-22 )