| In line with the concept of "layout for a green economy,innovation-driven development",China has provided strong support for the construction of ecological parks.The ecological park has the characteristics of clean and green,energy saving and emission reduction,and it also has great potential in the consumption of new energy.It has abundant internal available resources,diverse energy demands,and complex energy flow distribution.Reasonable use of resources in the park and reasonable allocation and planning of equipment in the park are conducive to promoting the development of the park on multiple levels of economy,environmental protection and energy conservation.This paper takes the integrated energy system of the ecological park as the research object,and studies and realizes the related issues of the system’s multi-energy power flow distribution and equipment configuration.The main contents include:(1)The basic architecture of the integrated energy system of the eco-park is studied.The mathematical model of typical energy production,conversion and storage equipment is given by analyzing the landscape resources and output in the ecological park.Based on the characteristics of wind-solar power generation,the ecological park is classified,and the basic structure of the integrated energy system of the ecological park is given.(2)The multi-energy power flow calculation method of the integrated energy system with the energy hub as the coupling unit of different energy networks is studied.The energy hub with different energy conversion types of equipment is used as the coupling unit for energy interaction between the subsystems,and a multi-energy power flow calculation model including the power subsystem,the thermal subsystem,the natural gas subsystem and the coupling unit is established.Analyze the different operating characteristics of the equipment in the coupling unit,and use the Newton-Raphson method to solve the multi-energy power flow based on the above model.A simulation example verifies the rationality and effectiveness of the proposed method.(3)The two-layer multi-objective optimization configuration method of an integrated energy system based on the premise of maximizing the consumption of new energy and considering planning and operation is studied.Analyze the interconnection of multiple energy sources and establish a comprehensive energy system equipment configuration-energy distribution model.From the perspective of economy,environment and energy consumption,a two-layer multi-objective optimization model considering investment cost,operation and maintenance cost and pollution emission is established,and the above model is solved by using immune genetic algorithm and improved non-inferior ranking genetic algorithm.Analysis and comparison are carried out through simulation examples,which verify the effectiveness of the proposed method.(4)The parallel strategy of double-layer multi-objective optimization based on the MapReduce parallel framework is studied.A Hadoop cloud platform is built.Aiming at the two-layer multi-objective optimization model proposed in this paper,in terms of algorithms and the characteristics of the model itself,a parallel method of two-layer multi-objective optimization based on the coarse-grained model is proposed.The analysis and comparison are carried out through simulation examples,and the speed and effectiveness of the proposed parallel strategy are verified. |
