摘要
新能源与化石能源互补发电模式可有效缓解节能减排压力。建立了由太阳能、生物质能组成的辅助系统作用于加热器汽侧的热经济性分析模型,以300MW和600MW机组为例,对辅助系统分别作用于回热系统高加侧和低加侧时混合发电系统减排CO2及降低燃煤成本等节能减排潜力进行了分析。结果表明:300MW机组节能减排潜力高于600MW机组;辅助系统作用于高加侧的热经济性高于低加侧;作用于1号高加时,混合发电系统的热经济性最好;完全排挤汽轮机抽汽工况下,热经济性指标达最大值,CO2减排节约成本达2 001.56万元/年,并随标准煤价格升高,煤炭节约成本增大,当标准煤价格为1 000元/t时煤炭节约成本达3 294.11万元/年。
Utilizing new energy and fossil energy synthetically provides a meaningful reference for energy -saving and emission-reduction.Taking 300MW and 600MW units for instance,a mathematical model for thermal economic analysis was established when auxiliary system acting on the location of steam extraction in heaters .Energy-saving and emission-reduction of CO2 reductions and coal cost-savings were investigated .Results show that the potential of a 300MW unit is higher than that of a 600MW unit.Thermal economy of HP heaters is better than LP heaters .Optimal thermodynamic performance will be obtained when auxiliary system acts on No .1 heater.Thermal economic indexes reach maximum values under the case of turbine extraction totally supplanted .The cost-saving of CO2 reduction presents the amount of 20.015 6 million yuan per year,and the cost-saving of coal,increasing with the price of standard coal ,achieves 32.941 1 million yuan per year while coal price is 1 000 yuan per ton.The present results provide a reference for energy conservation transformation of power plants in China .
出处
《汽轮机技术》
北大核心
2014年第1期30-34,80,共6页
Turbine Technology
关键词
新能源
混合燃煤发电系统
热经济性分析
节能减排
new energy source
hybrid coal fired power generation system
thermal economic analysis
energy-saving and emission-reduction
