Double-layer optimization planning and designing method for combined cooling, heating and power micro-grid system

Abstract

The invention belongs to the field of micro-grid optimization planning and design and relates to a double-layer optimization planning and designing method for a combined cooling, heating and power micro-grid system. The smallest whole life circle economic present value and the minimum CO2 emission are taken as the optimization target of the method, a multi-target genetic algorithm based on NSGA-II is adopted for an outer layer optimization module, and the optimal equipment combination and the equipment capacity of the system are sought according to input equipment physical parameters of the system, input economic parameters and the optimization scheduling result output by an inner layer optimization module; the hybrid integer linear programming algorithm is adopted for the inner layer optimization module, with the lowest system operation cost as the optimization target, the optimal operation strategy on a typical day of the system is obtained according to the optimization configuration scheme given by the outer layer optimization module, the optimization scheduling result of the system is output by the inner layer optimization module, and the system operation cost is transmitted to the outer layer optimization module. The method can achieve combined optimization of the configuration and the operation strategy of the combined cooling, heating and power micro-grid system.

Description

technical field [0001] The invention belongs to the field of micro-grid optimization planning and design, and proposes the minimum economic present value and the CO value of the whole life cycle of the micro-grid system 2 A two-tier optimal planning and design method for a combined cooling, heating and power microgrid system with the minimum emission as the optimization goal. Background technique [0002] The combined cooling, heating and power micro-grid system is a micro-grid form that takes the combined cooling, heating and power equipment as the core, includes multiple distributed units (power generation, energy storage, etc.), and has multiple energy balances. With the gradual depletion of traditional coal, oil and other fossil energy sources, environmental problems have become increasingly prominent. As an effective organizational form of distributed energy supply units, the combined cooling, heating and power supply microgrid system has high primary energy utilization...

AI Technical Summary

Problems solved by technology

However, the optimal planning and design method at the present stage fails to consider the impact of each equipment type, capacity and optimal operation strategy on the various operating performances of the system. In terms of optimization objectives, weighted values ​​are used to convert multiple objectives into a single optimization objective, or Pure single-objective optimization method

In addition, cold storage devices, such as ice storage equipment, are rarely considered in the microgrid system of combined cooling, heating and power.

Images