Feasibility Study Of 300MW Heat Units Participate In Peak Shaving In Summer

In recent years, power generation of renewable energy, such as, wind power and solar energy, etc. is booming rapidly. However, due to an uncertainty of electric output load for such the renewable energy, it is difficult to obtain the safe operation of electricity grid. Therefore, a suitable peak-load regulation power source for coal-fired power plants to reduce the burden on electricity grid has attracted great attention recently. Generally,’the law how many generated electricity energy based on thermal load’is employed by thermal power units in winter due to the higher economic benefits, while the economic performance is poorer in other season as the result of less power load rate of electricity grid. Therefore, the temperature field and thermal stress distribution in the condition of "two-shift" operation, such as, startup and shutdown, for 300MW steam turbine HP rotor are simulated by means of finite element method. Furthermore, the low cycle life expenditure of the HP rotor is calculated and analyzed. The feasibility of coordinating with wind power and solar energy for 300M W heat units to conduct peak regulation is investigated, which is important for increasing economic and reducing the peak and off-peak difference of power network.