Application Research On Digital Substation

As a result of global resources and increasing environmental pressures, the electricity market in the deepening of the process, the user of the power requirements of reliability and quality than ever, the concept of smart grid and interactive grid step by step into the public view. With the rapid development of the power industry,electronics and communications technology, the substation automation technology has improved continuously. The Digital Substation as the physical basis of the smart grid, have sprung up his head. IEC61850 standard that issued by the International Electrotechnical Commission have laid a theoretical basis for substation digital technology. Intelligent equipment and a digital communications technology development and practical use to enable the construction of the standard IEC61850-based substation digital possible.In this paper, the application of digital substation will be studied. Digital Substation detail the concept and composition details of the concept of digital substation and consists of combination of non-transformer, smart terminal technology, network communication technology and IEC61850 standards implementation at home and abroad, to clarify at this stage to carry out the construction of digital substation the feasibility of that future intelligent power grid as the basic unit of digital power substation is an important direction of technology development. Depth analysis of digital substation at home and abroad applied research development and the status quo, combined with Jinhua Electric Power 500-kilovolt power transmission project construction Chi weir, into the digital substation design, electrical equipment selection, project implementation and operation and maintenance of technical problems, etc. to discuss the protection of GOOSE and procedures of operation of the network technology in the engineering, optimizing the digital substation building program to further improve the level of substation automation applications. Finally, a comprehensive summary of the successful experience of the construction of the next stage of digital smart grid substation and the construction of proposed substation digital technology to promote in-depth applications, to speed up the process of building a smart grid.