P-Median Model Based Optimization of Energy Supply Station Sites and Pipelines Layout for Integrated Energy System

In the integrated energy system (IES), the sites of energy supply stations and layout of pipelines have a significant impact on the economy and efficiency of the system. This paper proposes a collaborative optimization method of station sites and pipelines layout considering the electricity and heating supply. Firstly, basing on P-median theory, this paper proposes a co-optimization planning model. The objective of the model is minimizing the sum of the product of the energy demand at the load node and the shortest weight distance between the load node and the corresponding energy supply station. Then, basing on enumeration method, this paper proposes an improved solving method which overcomes the drawbacks of the traditional solving method. Finally, a case study is presented to validate the proposed model and solving method. The results show that the proposed planning method based on the P-median model decreases the system operating cost effectively and realizes the collaborative optimization of the station sites and pipelines layout.