Operation optimization method for sewage recycling type comprehensive energy system

Abstract

The invention discloses an operation optimization method for a sewage recycling type comprehensive energy system. The method comprises the following steps: S1, constructing a sewage recycling type comprehensive energy system architecture; S2, constructing a sewage recycling type comprehensive energy system operation model; S21, establishing an objective function, and establishing a cost minimization function; S3, constraining the model; S31, the equipment operation constraint comprising S311, a biogas combustion engine constraint; s312, sewage source heat pump constraint; S313, energy storageoperation constraint; s32, the energy supply and demand transmission constraint comprising S321, an electric load supply and demand balance constraint, S322 an energy unit output / transmission capacityconstraint; S323, a line unidirectional transmission constraint; and S4, applying an intelligent particle swarm optimization algorithm to an optimization algorithm of the model, and applying a paretooptimization algorithm to optimize the multi-objective planning problem so as to realize better solution of the model.

Description

technical field [0001] The invention relates to the technical field of environmental treatment, in particular to an operation optimization method for a sewage reuse type comprehensive energy system. Background technique [0002] In recent years, in China, the problem of sewage pollution caused by domestic and industrial sewage discharge has become increasingly serious. How to improve the recycling efficiency of sewage and promote the improvement of water resource utilization has become one of the key issues of urban environmental protection. In order to improve the effect of sewage treatment, since the 1990s, domestic and foreign sewage treatment plants in Germany, Japan, Qingdao, etc. have successively started to use sustainable sewage treatment technologies such as biogas power generation and sewage cogeneration to meet the electricity demand for sewage treatment. At the same time, further remove the pollutants in the sewage, reduce the pollution to the environment, and re...

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Problems solved by technology

In the existing comprehensive energy system, there is a document "Optimization Research on Combined Cooling, Heating, and Power System and Its Coupling System with Ground Source Heat Pump", aiming at comprehensive benefits such as energy saving, environmental protection and economy, and the comprehensive benefits of cooling, heating and power generation. system and the coupled system of combined cooling, heating and power generation system and the ground source heat pump have been optimized, but the energy efficiency ratio of the ground source heat pump is a direct value, which cannot guarantee the reliability of the operation results; "Research on Multi-objective Optimization Method for Operation" analyzes the key issues of micro-grid operation optimization, aiming at economy and load satisfaction, using the NSGA-II optimization algorithm to obtain the Pareto optimal boundary, but does not consider the energy saving and emission reduction benefits of system operation; literature "Optimized Scheduling of Island Microgrid Containing Seawater Pumped Storage Power Station" models wind farms, seawater pumped storage power stations, and diesel units separately, and proposes an optimal dispatching scheme for island microgrids, considering their respective operating constraints and island load requirements. However, the main consideration is the electric load, and the use of island resources to optimize the supply and demand of electricity and heat in the microgrid is not comprehensively considered. The multi-objective operation optimization model of the electric vehicle swap station for the storage and power generation unit, but the operation scenario is relatively single and lacks comparison; the literature "multi-objective operation optimization of the wind-solar storage electric vehicle swap station", "operating characteristics of micro gas turbines fueled by biomass gas "Analysis" studied the operating characteristics of biomass gas turbines and water source heat pumps respectively, but neither considered the scenario where the equipment is integrated into the energy system for overall coordinated operation

[0004] In general, the existing research on sewage reuse technology mostly focuses on the characteristics of sewage treatment single equipment, while the research on integrated energy systems does not take into account the coupling between sewage treatment systems and integrated energy systems, and does not study the characteristics of the system. Overall efficiency of water and energy use

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