| In this design,through the income and understanding of the power grid structure of Zhenfeng County in Xingyi,Zhenfeng County has only one 110 kV substation,that is,Zhenfeng Substation.According to the development of the city,in order to improve the structure of the county-level power grid and improve the reliability of power supply,the second 110 kV substation needs to be designed and built.For this reason,through investigation and research,there are 110 kV Zhenfeng substation in the northwest of the county town,but the southeast direction is empty and there is no power point,which has a great potential for load development.It is more convenient to access the power supply in this location,the corridor is open,and the line access is relatively short.Therefore,it was decided to locate and design the substation in the eastern suburbs near Zhenfeng County.The substation was named "Zhenfeng 110 kV East Suburb Substation".Because the substation design involves multi-specialty cooperation,including system specialty,surveying specialty,civil engineering specialty,hydraulic engineering specialty,structure specialty,relay protection and automation specialty,communication specialty,etc.,this design will focus on load analysis,short circuit current,equipment and distribution equipment selection and other aspects of workIn the design,through understanding and collecting data from the local power supply department,analyzing and calculating the short-term and long-term load of the area,selecting the capacity and type of the main transformer of the substation,determining the main connection mode of the substation,calculating the short-circuit current,selecting the equipment and distribution device according to the calculation results,and briefly introducing the lightning protection measures of the substation and the distribution of relay protection.Place.By searching for information and analyzing the data needed,consulting relevant technical personnel,which combines the relevant standards and requirements of typical design of the Southern Power Grid,the design has been completed. |
