多燃机电厂的负荷分配优化  

Load Assignation Optimization for Multi-Unit Gas Turbine-Based Power Systems

作　　者：李宇红[1] 武小兵[1] 刘祥源[1] 

机构地区：[1]热能动力工程与热科学国家重点实验室清华大学热能工程系,北京100084

出　　处：《热力透平》2004年第3期142-146,206,共6页Thermal Turbine

摘　　要：　燃机电厂基本都要承担电力调峰任务。对于多台燃机并存的电厂,电力负荷在机组间的分配合理与否直接关系到电厂运行的经济性。本文采用简单解析分析和实际案例测算相结合的方法,研究了多燃机电厂的负荷分配优化问题,重点讨论了两套PG9171E型或PG9351FA型燃气轮机单循环,或两套S109E或S109FA联合循环发电系统。结果表明,当各单机负荷可大于一定值时,机组间平均分配负荷,则电厂的热经济性最佳;否则,非均匀分配负荷,总热效率较优。这一定值与燃机部分负荷特性密切相关。本文的结果对指导多燃机电厂的实际运行具有参考价值。Most of gas turbine based power systems take on the task of peaking in electricity grids. The optimization of assigning power load among multi-unit gas turbine-based power systems is very important for the economic benefit of a power plant. The load assignation optimization strategy has been discussed in the paper by means of analysis and case studies. The demo cases here are power systems with two units of PG9171E or PG9351FA single cycle gas turdine, or those of S109E or S109FA combined cycle turbines. The results indicate that the strategy of averaged load for each unit is of the highest efficiency when the load is larger than a certain value. Otherwise, uneven assignation is better. The certain value of load depends on the type of gas turbine. The analysis method and results may be useful for the operation of gas turbine based power plants.

关 键 词：燃机电厂 燃气轮机 联合循环 负荷分配优化 热效率 

分 类 号：TM621.4[电气工程—电力系统及自动化]