The research of power station running's load distribution

摘要

The paper describes an example, which is the application of optimization technique method to the peak and cyclic units' load distribution about Beijing-Tianjin-Tangshan electric power system in North China. It is the objective function to make the mean value of electric supply-coal consumption minimizing for power units under variable load; and it has been built to a nonlinear mathematical model which is fit for power system to distribute load. After a strict demonstration, thermal stress, life expenditure, starting time, fuel loss in starting up and low load economic have been analyzed and compared to the units in various running conditions (e. g. two-shift and low-load). By calculating optimum of the model, the best load distribution scheme and its curve have been obtained. If adopt this scheme, the electric supply-coal consumption of the peak and cyclic units which participate in the power system can be reduced. Optimum program has been provided by calculating optimizing curves for two-shift and low-load patterns, and the reliability and economy of electric supply can be improved.