PROJECT TITLE :
Dynamic Modeling and Interaction of Hybrid Natural Gas and Electricity Supply System in Microgrid
Natural gas (NG) network and electric network are turning into tightly integrated by microturbines within the microgrid. Interactions between these 2 networks are not well captured by the ancient microturbine (MT) models. To handle this issue, two improved models for single-shaft MT and split-shaft MT are proposed during this paper. Additionally, dynamic models of the hybrid natural gas and electricity system (HGES) are developed for the analysis of their interactions. Dynamic behaviors of natural gas in pipes are described by partial differential equations (PDEs), while the electric network is described by differential algebraic equations (DAEs). Thus the overall network may be a typical two-time scale dynamic system. Numerical studies indicate that the 2-time scale algorithm is quicker and can capture the interactions between the two networks. The results conjointly show the HGES with a single-shaft MT could be a weakly coupled system in that disturbances within the two networks mainly influence the dc link voltage of the MT, whereas the split-shaft MT may be a strongly coupled system where the impact of a happening can have an effect on each networks.
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