2、和变电所主要电气设备的选择（包括断路器，隔离开关，互感器等），并在选择时对电气设备进行了必要的计算和校验。同时，针对本次设计，完成相应图纸的绘制。关键词：变电站；500KV；电力系统ABSTRACTSubstation is the important part of power system, it directly influences the whole power system safe and economic operation of the power plant and the user, is the intermediate link, plays a role
3、 in transformation and distribution of electricity. The graduationdesign for 500kV the characteristics of substation, electrical design as the core, through the analysis of the substation and the orientation of a line and load data from the original, reliability, safety,economic and other aspe
4、cts to consider, determine the main electrical wiring mode. Mainly from the main transformer capacity,quantity determination, load analysis and calculation, and the short circuit current calculation and substation main electrical equipment selection ( including circuit breaker,isolating switch
5、, transformer and so n), and the choice of electrical equipment is necessary to calculate and check. At the same time, according to the design, complete the drawing. Keywords:: Substation；500KV；Power system 目录前言...................................................................................
