Abstract
The integration of electricity, gas, and heat (cold) in the integrated energy system (IES) breaks the limitation of every single energy source, which is the development trend of future energy systems. To realize the coordinated planning of “source-network-load-storage,” the IES has to be conducive to improving energy efficiency, bringing economic and environmental benefit, and achieving sustainable development of energy. In this paper, the techniques and methods involved in IES planning are summarized. First, the structure and characteristics of the IES are briefly introduced. Second, the key findings of the IES planning are summarized from four perspectives: source, network, load, and storage. Then, the modeling methods of the IES collaborative planning are summarized, and the optimization methods for solving complex planning problems are analyzed. Compared with previous reviews, this paper focuses on the modeling of multi-energy coupling of each part of source-network-load-storage and modeling of the overall collaborative planning. Finally, the future research direction of IES planning is forecast.
Highlights
With the continuous development of the world economy, the demand for various forms of energy is gradually increasing
In combination with previous articles, this paper summarizes the optimization planning of the integrated energy system (IES), mainly including the following contents: (1) the architecture and characteristics of the IES are briefly described; (2) the key findings of IES planning are analyzed from four perspectives: source, network, load, and storage; (3) the modeling method of IES coordinated planning is introduced and the different methods of solving the planning problem are discussed; (4) Based on the above contents, further research on “source-network-load-storage” coordinated planning of IES is forecast
Joint planning of the demand-side response and the energy storage system can greatly improve the reliability and economy of the whole system, especially when uncertainties such as renewable energy power generation and natural gas price are taken into consideration (Asensio et al, 2017; Xiao et al, 2018; Hamidpour et al, 2019)
Summary
With the continuous development of the world economy, the demand for various forms of energy is gradually increasing. An IES is a complex system with multi-energy coupling that integrates power systems, natural gas systems, and thermal systems It has the links of energy production, transmission, transformation, storage, and consumption. Compared with a single energy system, the most important feature of the IES is that heterogeneous energy can be transformed through the coupling equipment and transmitted to the equipment terminal under the coordinated operation of all links In this way, it can meet the differentiated demands of the whole society for electricity, gas, and heat; effectively solve the contradiction between supply and demand of heterogeneous energy in time and space; and achieve the goal of improving energy utilization rate, strengthening system robustness, and realizing the sustainable development of energy. The planning of the IES must be a multi-objective, multi-constrained, non-linear, mixed-integer optimization problem with uncertain factors, and it is a random and complex dynamic optimization process
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