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The Digital Technology Applys to Substation

Author: LiChuiYou
Tutor: WenFuShuan；LiangGuoKun
School: South China University of Technology
Course: Electrical Engineering
Keywords: intelligent devices IEC61850 Substation Digital
CLC: TM769
Type: Master's thesis
Year: 2009
Downloads: 140
Quote: 1
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Abstract


Along with the development of power network and its control technology,computer technology,communication technology and other related technologies,substation automation technology in China’s power industry has been widely applied.The automation degree of substation is increasingly higher,and it continuously develops in the direction of smart grid. Digital technology is an important means to achieve intelligent grid,and digital substation is the developing direction of substation automation system.In this paper,the status of substation automation system and its limitations is analyzed at first,and then the main technical features of digital substations system based on IEC61850 is detailedly analyzed.And it described the electronic transformer,intelligent switches and other intelligent devices and network once a secondary device sub-layer construction,electrical equipment,intelligent information sharing and interoperability between the modernization of substations,the basic characteristics of intelligent devices,communication networks,a unified model and communication protocols and so on.Then from the own characteristics of digital substation,and takes the digital transformation of the three townships 220kV substation for example,combined with the current technical level of domestic digital equipment,the selection of digital equipment and various problems in the transformation of new equipment is studied.From the class solutions to the problems,the scheme accorded with the actual situation of the three rural substations is selected as the optimal scheme.In accordance with IEC 61850 standard,substation equipments are transformationed,and ultimately the first Southern Power Grid 220kV substation hub for the digital transformation of the pilot station is successfully put into operation.The selection of equipments as well as the specific application of various technologies during the transformation process are described in detail, the key technologies of the practical application of digital substation are studied,and the present problems and development direction of digital substation are described at the last.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation > Computer application in power system
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