The Protection And Control Management System Of The Microgrid

The safe and reliable operation of power system, is important basis for the daily production of social life and social development, but the problems caused by the large scale power system become seriously. Under the influence of energy problem, coal, oil and natural gas for energy generation have seriously restricted the way the sustain- able development of society, in order to promote social progress, seek the road of sustainable development of electric field is imperative. As a new way for the use of new and renewable energy, the concept of Distributed Generation and Microgrid is proposed. Microgrid is small grid composed by Distributed Generations, and get together with the large grid as the whole, to power to local loads economically and efficiently, and also to reduce the adverse effects of power grid caused by the DG.In the process of development and research of the Microgrid, conclude that an management system that can master the whole condition of the Mirogrid, control the operation of the Microgrid, and link the Microgrid with the utility grid is indispensble. So far in this field, just put the Energy Management System of the utility grid onto the Microgrid, but the EMS designed for the utility grid with high voltage is not appropriate for the Microgrid which should be simple.Therefore propose the Protection and Control Management System of the Microgrid, which is simple and applied. This system connects the protection and control devices to an information system, to monitor and control the operation of the Microgrid. In the study of network communication and fieldbus technology, propose the network structure and communication protocols of the management system, and in the study of the characteristics of the Microgrid, proposed the functions of this system as the data acquisition and transmission, island detection and data storage and so on. Finish the communication program at the industrial PC and protection device system, use C# to program the prototype of the software on PCC, and research on the method of come true the island detection.