  The energy internet is one of the most promising future energy
infrastructures that could both enhance energy efficiency and improve its
operating flexibility. Analogous to the micro-grid, the micro energy internet
emphasizes the distribution level and demand side. This paper proposes concepts
and design principles of a smart micro energy internet for accommodating
micro-grids, distributed poly-generation systems, energy storage facilities,
and associated energy distribution infrastructures. Since the dispatch and
control system of the smart micro energy internet is responsible for external
disturbances, it should be able to approach a satisfactory operating point
while supporting multiple criteria, such as safety, economy, and environmental
protection. To realize the vision of a smart micro energy internet, an
engineering game theory based energy management system with
self-approaching-optimum capability is investigated. Based on the proposed
concepts, design principles, and energy management system, this paper presents
a prototype of China's first conceptual solar-based smart micro energy
internet, established in Qinghai University.
