Capacity planning method of pumped storage power station based on life cycle cost theory

Abstract

The invention is a capacity planning method of a pumped storage power station based on a life cycle cost theory. The method is characterized by comprising the following steps: firstly, analyzing the cost of the pumped storage power station at each stage in a life cycle, and building a life cycle cost model of the pumped storage power station; secondly, analyzing benefits brought by the pumped storage power station to a thermal power system and a wind power system as well as benefits generated by the pumped storage power station according to the coordination relationship between thermal power output and power output of the pumped storage power station under the scenario of given system load curve and wind power output, and building a comprehensive benefit model of the pumped storage power station in conjunction with the life cycle cost and operation relevant constraints; and finally, solving the comprehensive benefit model of the pumped storage power station by using particle swarm optimization to obtain the planning capacity of the pumped storage power station when the comprehensive benefit is maximum.

Description

technical field [0001] The invention relates to the field of capacity planning of a pumped storage power station in an electric power system, and relates to a method for capacity planning of a pumped storage power station based on the whole life cycle cost theory. Background technique [0002] As wind power and other new energy generation are connected to the grid on a large scale, the flexibility and stability of the system operation are reduced; as a means of transferring electric energy in time, energy storage power supply can make up for the fluctuation of wind power output and the characteristics of anti-peak regulation, which is helpful To reduce wind curtailment, improve wind energy utilization, and ensure stable operation of the power system. Compared with other energy storage power sources, pumped storage power stations have the advantages of relatively mature technology, low unit capacity cost, and large-scale storage. Backup and other functions have a significant...

AI Technical Summary

Problems solved by technology

[0003] There have been studies on the capacity planning of pumped storage power plants, either from a single economic aspect to study the capacity planning of pumped storage power plants, or from a single reliability aspect to study the capacity planning of pumped storage power plants, and also consider economic It is a method that combines reliability and reliability, but the consideration is not comprehensive; it is of practical significance to consider the cost and income of the pumped storage power station in the whole life cycle from a long-term perspective when planning the pumped storage power station. The benefits brought by the power station access system to wind power and thermal power cannot be ignored

Images