Regional comprehensive energy system layout planning method considering topological characteristic of energy network

Abstract

The invention discloses a regional comprehensive energy system layout planning method considering topological characteristics of an energy network, and belongs to the field of integrated energy systemplanning. The method comprises: providing topological characteristics of the energy network; establishing a topology description model of the regional comprehensive energy system based on the energyflow balance constraint; establishing a regional comprehensive energy system layout planning model by taking minimization of the sum of initial investment construction cost and later operation cost ofenergy stations and energy supply pipelines of the regional comprehensive energy system as a target; using an orthogonal polynomial approximation and piecewise function linearization method to reasonably simplify the planning model, and converting an original problem into a mixed integer quadratic programming problem which is easy to solve; and finally, solving the simplified target function based on a branch and bound method and an interior point method to obtain a comprehensive energy system layout planning scheme. According to the planning method, problems are considered more comprehensively and reasonably, the problem that the physical meaning of a planning target is not clear in an existing planning method is solved, and the solving efficiency is higher.

Description

technical field [0001] The invention relates to the field of integrated energy system planning, in particular to a regional integrated energy system layout planning method considering the topological characteristics of an energy network. Background technique [0002] The regional integrated energy system is the basis for building the Energy Internet, which can give full play to the complementary advantages and synergistic benefits among various forms of energy, and can promote the consumption of renewable energy. The regional comprehensive energy system consists of energy stations, energy supply pipelines and load centers. The layout planning of energy stations and energy supply pipelines needs to be coordinated with urban planning, and its rationality will not only affect the smooth implementation of comprehensive energy projects, but also affect the reliability and economy of the construction and operation of regional comprehensive energy systems in the later stage. [00...

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Problems solved by technology

[0004] Chen Juan et al. (Chen Juan, Huang Yuansheng, Lu Bin. Research on "Station-Network" Layout Optimization of Regional Energy Internet [J]. Chinese Journal of Electrical Engineering, 2018, 38(3): 675-684.) Based on graph theory The p-median model establishes a regional integrated energy system energy station and pipeline layout planning model, but the direct application of the p-median model makes the physical meaning of its planning goals unclear

Yi Wenfei et al. (Yi Wenfei, Yu Yongzeng, Zhang Yiwei, et al. Optimal Planning of Energy Stations in Regional Comprehensive Energy Systems Based on p-Median Model[J]. Automation of Electric Power Systems, 2019,43(4):107-112. ) proposed a planning method to make the path weighted distance between the load center and the energy station the shortest, but the layout of the energy station and the pipeline is not equivalent to the shortest path problem, and the model is easy to fall into a local optimum when using a heuristic algorithm. Enumeration method to solve, the efficiency is low

[0005] To sum up, there is currently no mature planning method for regional integrated energy system layout

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