Abstract: On the premise to ensure the stability of energy supply and the normal production safety， using mathematical programming method， the dynamic mathematical optimization model was set up based on the optimal allocation of the surplus gas between the buffer users and production scheduling of the steam between the production equipments. The accuracy of power network production output is effectively improved by this optimization model， which can make full use of secondary energy and residual heat and energy， and achieve the rationalization of the outsourcing and the optimization of electricity production structure， hence effectively reduce the diffuse gas and steam， save energy， and also reduce the production cost of enterprises.

Key words: electric power, optimization model, secondary energy, residual heat and energy, save energy