摘要
为确定火电机组凝结水泵最佳运行调节方案,提出一种基于热经济学的成本分析模型,并同常规的分析方法进行比较。凝结水泵的不同运行及调节方案中,常规解决办法是依据性能曲线的不同情形可分别计算出轴功率、耗电量和年费用等,按年费用的大小可确定方案的优劣。而建立的热经济学成本分析模型是把整个能量系统划分成 21 个组元,依据各组元的燃料/产品特性及它们之间构成的生产关系,建立单位火用成本、火用定价及单位产品非能费用构成的单位热经济学成本关系模型,进行凝结水泵组元在不同运行及调节方式下的单位热经济学成本分析,完成方案优选的决策。结果表明,热经济学的成本分析模型同常规的分析方法结果一致,进一步验证了其分析的准确性和有效性。该模型具有很强的通用性,可用于任意复杂能量系统设备经济性的分析和诊断,为能量系统的诊断、评价、规划、设计和改进提供科学指导。
A cost diagnosis analysis model based on thermoeconomic theory is presented in order to optimize the driving mode of condensation pump in 300MW power- generating unit. The comparative analysis is carried out between this cost analysis method and routine one. This routine method can calculate shaft power, electricity consumption and annual cost by pump performance curve. The optimizing plan is obtained by annual cost of 6 driving modes. When the thermoeconomic analysis model is created, the whole energy system can divide into 21 components by these fuels and products as well as their productive relationship. Then, the model is set up by these independent variables, such as unit exergy cost, exergy costing and unit product capital cost. Unit thermoeconomic cost analysis of condensation pump component can proceed in different operations and different driving modes, and finally carry out the decision of the optimizing plan. The results show that this thermoeconomic cost diagnosis analysis model is closely consistent to routine analysis method, and its reliability is high. This analysis model has doughty current character in any complex energy system, and provides scientific decision basis in diagnosis, assessment, plan, design and improvement of energy system.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第10期196-200,共5页
Proceedings of the CSEE
基金
国家重点基础研究发展规划973项目(2000026307)~~
关键词
成本分析模型
年费
费用构成
热经济学
定价
生产关系
单位产品
凝结水泵
组元
能量系统
Thermal power engineering
Thermoeco- nomics
Cost analysis model
Frequency conversion-based speed governing technology
Economic analysis
Condensa- tion pump
