摘要:随着国民经济的迅速发展，10/0.4kV变配电系统也进入高速发展时期。变配电系统作为供配电的核心，直接影响到居民用电的质量。

本论文《捷荣房地产10/0.4kV配电工程》，首先通过对原始资料的分析及总负荷选择主变压器，同时根据主接线的经济可靠、运行灵活、和当地设计原则要求，选择了三种待选主接线方案进行了技术比较，最后确定了变电所电气主接线方案。

其次进行短路电流计算，从三相短路计算中得到短路发生在母线时，其短路稳态电流和冲击电流的值。再根据计算结果及母线的额定电压和最大持续工作电流进行主要电气设备选择及校验（包括断路器、隔离开关、电流互感器、电压互感器等）。

最后绘制了电气主接线图、电气总平面布置图等相关设计图纸。一次部分设计由说明书，计算书与电气工程图组成，说明书和计算书包括配电房总体分析、负荷分析与主变选择、电气主接线设计、短路电流计算、电气设备选择。

关键词：电气主接线设计；短路电流计算；电气设备选择

Abstract:With the rapid development of the national economy, 10/0.4kV variable power distribution system is also in rapid development period. As the core of power distribution,it directly affects the quality of residential electricity. Firstly, through the analysis of raw data and the total load to select the main transformer, three kinds of programs will be selected in the main wiring technical comparison according to the flexible operation and design principles and requirements of local. Finally, the main electrical substation wiring program will be selected. Secondly, the simulation of short circuit current calculation. Calculated the steady-state current and the impact of short-circuit current from the three-phase short circuit occurred in the bus. Then according the results and the bus voltage and maximum continuous rated operating current to validate the main electrical equipment(including circuit breaker, disconnecting switch,current transformer,voltage transformer,etc).

Finally, make the main draw of the electrical wiring diagram, electrical general layout plan and other related drawings. The first part consist of specifications, computation book and electrical engineering drawings.

Keywords: Main Electrical wiring design；Short-circuit current calculation；Electric equipment selection