Abstract
Micro-grid is the next generation of distribution system, which could make full use of clean energy (Jacobs and Bean, Power Syst Prot Control 38(14):5–11, 2010). This chapter analyzes the characteristics of Micro-grid and describes the typical form of Micro-grid. Considering the requirements of protection and fault diagnosis in Micro-grid, combined with object-oriented thinking and database theory, the chapter puts forward fault diagnosis model of Micro-grid based on high-level Petri net. The model also adds time stamps to the elements to achieve the priority of diagnostic logic. Taking into account that the protection may fail to operate and the loss may happen in information transmission, fuzzy theory is introduced in fault diagnosis model to enhance the robustness of the fault diagnosis model. At last, according to the example and verification, it can be proved that fault diagnosis of Micro-grid based on advanced Petri net is valid.
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