Method for desiging capacity of compressed gas energy storage system

A system for designing capacity of a CGES system, comprising:

• a system capacity determination module, configured for constructing a CGES system, based on local electricity prices, developing a first optimization problem with an objective of maximizing an ROI of the CGES system, and taking rated capacity, rated power, and real-time power of the CGES system as decision variables, wherein the decision variables are determined by solving the optimization problem;
• a component capacity calculation module, configured for determining the capacities of each system component, developing the second optimization problem in a genetic algorithm format with an objective of maximizing an RTE of the CGES system, taking key thermodynamic parameters as decision variables, refining the rated power of the compressor power, and determining a heat transfer rate and a flow rate of the working gas, wherein the decision variables are determined by solving the genetic algorithm.