| The large-scale engineering application of intelligent substation,promoted by the development of technology and equipment for intelligent substation,has exposed a series of problems such as low level of equipment intelligence,low integration of secondary system,low efficiency of maintenance and maintenance,dispersion of monitoring system function and so on.In order to solve the problems existing in the development of intelligent substations,research on a new generation intelligent substation with high system integration,more compact structure,integrated information and more advanced applications,as well as the on-site integrated test technology of intelligent substation has important practical significance.The thesis focuses on the application of intelligent substation engineering technology.The research work is as follows:Firstly,the thesis systematically expounds the structure and characteristics of the intelligent substation.Then the principle of the key equipment including IEC61850 protocol,on-line monitoring system for primary equipment,switchgears and transformers in process layer,relays and controllers in baylayer,the SCADA system in station layer equipment is analyzed.Secondly,based on the 220 kV Beihu intelligent substation,this thesis puts forward the project configuration scheme of the substation,including primary equipment configuration,hierarchical relay protection configuration,network networking mode,focusing on the analysis of intelligent primary equipment integrated on-line monitoring system scheme and the secondary equipment integration scheme.Finally,in view of the large difference between Beihu intelligent substation and traditional substation in the secondary systems combined with practical work experience,this thesis expounds and summarizes the integrated testing technology and field testing technology of Beihu Intelligent Substation,which provides a reference for the commissioning and acceptance of new equipment before putting into operation. |
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