【摘要】 在众多类型的变电站中，220 kV变电站对于我国电力行业的发展影响较大，因此如何保证220 kV变电站运行稳定性强、电能转化效率高，是220 kV降压变电站设计的关键所在。从220 kV变电站的负荷角度进行设计，并且利用计算后的负荷容量结果作为主变压器的选择依据。选择能够与三个等级电压相互匹配的主接线方式，使用标幺值法对各个电压等级进行短路计算，求出三相短路电流。更多还原

【Abstract】 Among many types of substations, 220 kV substation has a great influence on the development of China’s electric power industry, so how to ensure the stability of 220 kV substation operation and high efficiency of power conversion is the key to the design of 220 kV down converter substation. This design is carried out from the load perspective of the 220 k V substation and the calculated load capacity results are used as the basis for the selection of the main transformer. The main wiring method is selected to match the three voltage levels, and then the short-circuit calculation for each voltage level is used to find the three-phase short-circuit current using the standard minimum value method.更多还原