Multi-Energy Flow Calculation Method for We-Energy Based Energy Internet

In order to alleviate environmental pollution and improve utilization efficiency of end-used energy, Energy Internet (EI) becomes an important direction of energy structure adjustment in China. Multi-energy flow coupling is one of the key features of EI. We-Energy (WE) is a novel energy production-storage-consumption mode, in which the normative or non-normative energy, generated by personal energy suppliers, can be provided to the specific majority or a single user in the energy internet. The access of WE makes the type of nodes in the network increase. The computational difficulty of multi energy flow is improved. An energy Internet model of integrated electric, gas and heat network based on WE is proposed. The mathematical models of different WE are established, and the corresponding processing methods are proposed according to different types of nodes. An extended Newton-Raphson method is used to calculate the multi-energy flow. Validity of the proposed method in multi-energy flow calculation and analysis of interacting characteristics is verified with a case.