Abstract
Integrated energy system (IES) planning is a long-term and rolling decision-making process. According to System Development Theory, the development-needs at different stages are different. Therefore, an IES dynamic multi-stage planning method considering different development stages is proposed. The first step of the method is putting forward a model based on the degree of system coupling, the reserve ratio, and the penetration rate of clean energy to divide dynamic development stages. Secondly, establishing a dynamic multi-stage planning model of the IES by combining the needs of different development stages through dynamic goals and constraints. Finally, the results given by the optimal configuration of critical IES equipment will be analysed in different scenarios. Following these steps, the result shows that the dynamic multi-stage planning method proposed is able to reduce the total planning cost of the system by 14% and reducing the clean energy penetration rate by 3%. Therefore, the proposed dynamic multi-stage planning scheme is effective and economical.
Highlights
The issue of reducing the usage of fossil fuel is widely considered by the world
This paper proposes an innovative method of Integrated energy system (IES) dynamic multi-stage planning focusing on the development stage
The equipment used in the IES includes gas turbines (GT), heat pumps (HPs), P2G units, gas boilers (GB), combined heat and power (CHP), thermal power units, PV, and wind turbines (WT)
Summary
The issue of reducing the usage of fossil fuel is widely considered by the world. With the continuous progress of energy system development in low-carbon technology and sustainability (Liu et al, 2009), integrated energy systems (IES) can provide an organic energy supply and integrated system that coordinates energy production, transmission, distribution, conversion, storage, and consumption. A suitable planning method is required to promote the efficient and stable development of IES and approach suitable resource allocation. This arrangement involves utilizing the complementary energy characteristics of IES, promoting cascaded energy usage, and reducing fossil fuel energy consumption. The linear development stage corresponds to the medium stage of multi-stage planning, the development speed is fast and the structure changes less. The mature stage of the corresponding system in the nonlinear stage of development produces qualitative changes from the accumulation of linear development, and the IES adjusts the internal structure appropriately and coexists harmoniously with the equipment.
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