Electrical Design Of 110kV Substation

With the development of science and technology,the construction of power grid is becoming more and more important.The substation is the most important part in the construction of the power grid,which plays the role of the energy transfer and the voltage conversion.With the development of the times,more and more rapid improvement of the substation,from the traditional substation and voltage level of the first high voltage substation,now,to the GIS station and intelligent substation,substation is becoming more and more advanced,the requirements of substation technology is more and more high.The main task of this graduation project is to complete the preliminary design of Daqing35 kV substation.The main purpose of the design is to understand the development process and the general design method of substation design.In the design of the professional courses have been mastered,and learn the preliminary design of substation electrical process and regulations,so as to achieve the combination of theory and practice.The work contents of the design include,first according to the design requirements of the main wiring scheme of outgoing circuit number of substation is determined,and then review the related literature and materials to determine the main transformer model,according to the selected parameters of the transformer short-circuit current calculation and transformer substation of different voltage levels,electrical equipment and bus and then choose 110 kV and 10 kV substation the need,then according to the reasonable layout of the substation equipment,and finally to the main transformer protection design.The main results of this design is a 110 kV outlet 2 back,10 k V line back to the 110 kV substation electrical design and the main transformer of the initial configuration of the protection of 16.The form of the main wiring of the substation,power distribution equipment outside the house are used in bridge connection and single bus;110kV distribution equipment of the indoor GIS,10 kV arranged in house dual switch cabinet;main transformer substation protection using longitudinal differential protection and gas protection etc..