In order to solve the problem of the connection between the initial planning scheme and the later system operation in the long-term planning
based on the energy consumption characteristics of agglomeration-promotion-type rural areas
a multi-stage planning model for integrated energy systems in such areas was established using a village in the Guanzhong Plain as a case study
considering optimal construction sequencing
and the results show that: 1) Compared to the single-phase planning approach
the multi-phase planning approach
which takes into account the optimal construction timing
resulted in a 38.9% increase in the residual value of the energy system equipment
a 5% reduction in operating costs
a 4.5% reduction in life cycle costs
and an increase in the environmental benefits of the system.2) The increase of the energy load highlights the superiority of the multi-stage planning method
and the rural areas with a fast development speed are especially suitable for adopting the multi-stage method for the planning of the integrated energy system.3) After adopting the multi-stage planning method
the life cycle cost of the energy systems in the typical representative regions of severe cold
cold
hot-summer and cold-winter
and hot-summer and warm-winter decreased by 5.01%
4.51%
4.30%
and 0.21% respectively compared with the single-stage planning situation. If the multi-stage planning method is adopted for the energy system planning in severe cold
cold
and hot-summer and cold-winter regions
the economic benefits of the system can be significantly improved
while the improvement in economic benefits in hot-summer and warm-winter regions is limited.
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