3. Two-Stage Optimal Scheduling Model of Hydrothermal Electricity Based on Generation Performance

Electric power industry is energy-intensive industry. The energy efficiency improvement, change of energy utilization mode, and reduction of carbon-based energy use of electric power industry play important roles in alleviating the contradiction between supply and demand of energy and improving the ecological environment. Theory and practice indicated that the priority use of clean and renewable energy and making cleaning power and thermal power combined operation are effective ways to make the power system economic operation, improve energy utilization efficiency, and save nonrenewable energy. At present, hydroelectric energy is in dominant among clean and renewable energies in China. Hydrothermal power system combined operation is an effective way to enhance the energy utilization efficiency of power systems and promote the adjustment of energy utilization mode. The rational coordination of hydrothermal power system operation mode which can make the best use of the complementary advantages of power systems can promote power system energy-saving operation. Tightly focusing on combined optimization dispatch problems for hydrothermal power system, this chapter has made deep research on power supply and demand as well as power output and replacements of hydrothermal units for the purpose of water resources reasonable utilization and coal and non-renewable energy conservation.