毕业设计（论文）-工厂降压变电所及配电统电气设计.docxVIP

第 PAGE 1 页 共 NUMPAGES 30 页PAGE 学位论文某工厂降压变电所及配电系统电气设计某工厂降压变电所及配电系统电气设计摘 要为满足工厂供电安全可靠的技术要求，本设计按照工厂原始资料和设计要求，结合专业知识及相关书籍进行电气设计。设计的主要内容包括：负荷计算、主变压器的选择、配电方案的设计、短路电流计算、一次设备选择校验、防雷保护和接地装置设计等。本次设计根据工厂原始资料，采用需要系数法进行负荷计算和无功功率的补偿，根据负荷计算结果选择主变压器的型号、台数和容量并确定变压器的接线方式、冷却方式和调压方式。同时设计配电方案，画出系统配电方案示意图。然后进行高低压母线点的短路计算，根据短路计算结果对工厂的一次设备进行选择和校验。最后完成变电所线缆的选择与校验、防雷保护方案和接地保护装置的设计。本次设计基本达到了工厂供电的技术要求。关键词：降压变电所；电气设计；配电系统；短路电流Electrical Design of Factory Step-down Substation and Distribution SystemAbstractIn order to satisfy the factory power supply safe and reliable technical requirements, according to the factory raw material and the design requirements, combined with professional knowledge and related books to electrical design. The main content of the design include: load calculation, the choice of the main transformer, power distribution scheme design, short-circuit current calculation, select and calibrate primary equipment, lightning protection and grounding device design. In this design, based on the original data，use demand coefficient method to load calculation and reactive power compensation, according to the calculation results to choose the type, quantity and capacity of main transformer, and determine the connection mode, cooling mode and regulating methods of the transformer. As the same time distribution scheme design, and draw the distribution schematic diagram. Then calculate the high-low pressure bus short circuit current, according to the calculation results, select and calibrate primary equipment. Finally complete the substation cable selection and calibration, design the lightning protection and grounding scheme. This design basic reached the factory power supply design technical requirements.Key words: step-down substation; electrical design; distribution system; short circuit current目 录论文总页数：25页 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc485203291 1引言 PAGEREF _Toc485203291 \h 1 HYPERLINK \l _Toc485203292 1.1课题背景 PAGEREF _Toc485203292 \h 1 HYPERLINK \l _Toc485203293 1.2