理工学院毕业设计（论文）某 110KV 变电所一次部分设计学 生： 五 名学 号：专 业：电气工程与其自动化 班 级：2024.3指导老师：唐 玲理工学院自动化与电子信息学院二 O 一二年六月摘 要本次设计建设一座 110KV 降压变电站。首先，根据原始资料对变电所的实际情况进行分析，选择适合的变压器。根据主接线的选择要求选择各个电压等级的接线方式，在技术和经济方面进行比较，选取最优接线方式。其次进行短路电流计算。根据各短路点可以计算出各点短路稳态电流和短路冲击电流，根据各电压等级的额定电压和最大持续工作电流来选择断路器、隔离开关、电流互感器、电压互感器、熔断器、母线等电气设备，然后进行校验。最后对变电所的实际情况，根据防雷和配电装置设计的要求进行防雷设计和配电装置设计。关键词：变电所；主接线；断路器；短路电流计算；电气设备选择ABSTRACTThis design is a construction of a 110KV step-down substation.First, according to the raw data we should analyze the actual situation of the substation, and select the appropriate transformer.We need to select the option of the main wiring for each voltage levels.After compered all from technical and economic aspects then select the optimal wiring.Secondly,do the short-circuit current calculation. Short-circuit steady-state current and short-circuit impulse current can be calculated according to the short circuit point.The selection of circuit breakers ,isolating switches, current transformers, voltage transformers, fuses, bus and other electrical equipment based on the voltage level of the rated voltage and maximum continuous operating current . And then we do the calibration.Finally ,according to the actual situation of the substation,and the mine design and electrical installations according to the requirements of the design of lightning protection and power distribution equipmentKeywords: Substation；Lord wiring；Circuit breakers；Short-circuit current calculation；Electrical equipment selection目录摘...
