根据京津唐电网网厂分离速度加快、购电费用大幅度增加的趋势 ,针对经济调度目标函数 ,按两种经济调度方案进行了论证分析 ,得出了按购电费用最低为目标函数的方案的经济效益较好的结论 ,并提出了该方案执行中的有关调度原则。 According to the trend of speeding up the separation of net and plant in Beijing-Tianjin-Tangshan Power Grid, and the trend of increasing the cost of power purchase, according to the objective function of economic dispatch, two kinds of economic dispatching programs are demonstrated and analyzed, and the program with the lowest cost as the objective function is obtained. The conclusion that the economic benefits are better, and put forward the relevant scheduling principles in the implementation of the program.