Centralized biogas plant (CBP) provides an attractive solution to the energy supply for district heating, electric loads, and residential cooking in remote areas via a local biogas delivery network. To overcome the challenges of biomass availability for CBPs, an integrated expansion planning model is proposed in this paper. The model makes investment decisions on the sequential planning of integrated electric power distribution and biogas delivery networks and uses the constrained biomass transportation network to optimally determine CBP locations in the integrated network. The proposed approach also considers the biomass availability and the cost of biomass supply in the integrated model. The proposed multistage stochastic planning problem makes investment decisions considering the gradual realization of uncertainties as loads grow and biomass is made available. The polyhedral approximation method is applied to convert the proposed mixed-integer second-order cone programming (MISOCP) problem to a mixed-integer linear programming (MILP) problem for making the problem more tractable for large-scale cases. The effectiveness of the proposed integrated model is validated using an 8-node and a 24-node test system.

中文翻译：

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考虑生物质区域可利用性的沼电一体化系统分期扩建规划


集中式沼气厂 (CBP) 通过当地沼气输送网络，为偏远地区的区域供暖、电力负载和住宅烹饪提供了极具吸引力的能源供应解决方案。为了克服 CBP 生物质可用性的挑战，本文提出了一种综合扩张规划模型。该模型对综合电力分配和沼气输送网络的顺序规划进行投资决策，并利用受限生物质运输网络来优化确定综合网络中的 CBP 位置。所提出的方法还考虑了综合模型中的生物质可用性和生物质供应成本。所提出的多阶段随机规划问题在做出投资决策时考虑到随着负荷的增长和生物质的可用而逐渐实现的不确定性。应用多面体近似方法将所提出的混合整数二阶锥规划（MISOCP）问题转换为混合整数线性规划（MILP）问题，以使问题对于大规模情况更容易处理。使用 8 节点和 24 节点测试系统验证了所提出的集成模型的有效性。