Planning and design of regional integrated energy station considering load growth mode

The existing integrated energy station (IES) planning does not consider the lifecycle of the energy conversion equipment and the growth modes of various loads at the same time, which will inevitably affect the economics of the IES planning. This paper proposes a planning and design of regional IESs that takes the load growth mode into account, aiming at the lowest total cost of regional IESs in the planning lifecycle. Based on the operation mode about of the IES coupled with the three-networks involving the natural gas network (NGN), power distribution network (PDN) and transportation network (TN), the selection and capacity configuration of the equipment in the IES are optimized. The solution process of staged planning for IESs is proposed based on load calculation, power distribution and economic checking computations. The optimization calculation is carried out by reasonably dividing the time interval and setting the calculation criteria for the power distribution module. Finally, four MW-level IESs coupled with IEEE 33-node PDN, 20-node NGN and 12-node TN are simulated on the basis of MATLAB. The results show that the equipment investment and operation costs of the regional IESs can be decreased by about 7.1%, and the accumulated waste of various equipment capacity is decreased by nearly 16.51 MW, which verifies the effectiveness of the proposed model and strategy. Furthermore, the results show that it is more practical and economical to consider the equipment lifecycle and load growth mode for the medium and long-term planning of IESs.