[工学]工厂供电设计.doc

摘 要 本次毕业设计题目为某矿区供配电系统结构设计及保护系统设计，简化说是对一个矿区进行用电问题的设计。工厂供电设计是一门实用的学科，需要较高的理论基础。工厂供电就是指工厂所需电能的供应和分配，亦称工厂配电。变电所担负着从电力系统受电,经过变压,然后配电的任务.显然,变电所是工业供电系统的枢纽,在工农生产中占有特殊的重要的地位。 设计内容主要涵盖了矿区供配电系统的结构设计与矿区供配电系统的保护设计。完成了各车间及全矿的负荷计算、配电系统设计方案、供电系统的设计方案及主变压器容量和台数的选择、改善功率因数的措施、矿区配电系统接线方式、总降压变电所主接线选择、短路电流计算、继电保护设计及整定计算和总降压变电所平面布置方案等内容。重点设计的供配电系统结构和供配电系统保护部分，包括了矿区变配电所的布置、矿区变配电所的结构设计和配电装置安装距离等问题。保护设计包括对每条出线的继电保护、母线的继电保护、变压器的继电保护和整个系统的防雷、接地保护设计。 关键 Abstract The title of college graduation design is one mining area for the power supply and distribution structural design and protection design. It is a practical discipline that the factory supplies power and designs, need higher theoretical foundation. Plant power supply refers to the supply and the assignment of needing the electrical energy, also calls the factory power distribution. A transformer substation takes of receiving power from the power system, changing voltage, and then distribution power. Clearly, the factory transformer substation is industrial power supply system hub, and has a special importance in agriculture. The text contains the structural design and protection design. The workshop and completed a full load of ore, the power distribution system design, the power supply system design and Taiwans main transformer capacity and the number of options, measures to improve the power factor, the mining area cable distribution system, transforming the buck The main connection options, short-circuit current basis, the relay design and setting calculation and the buck substation layout of the programme and so on. Focus on the design for the structure and distribution system for the protection of the distribution system, including the distribution of the mining area changed by the layout of the mining area by the variable distribution of the structural design and distribution equipment from the installation, and other issues. Each design includes the protection of the出线relay, the relay bus, transformers and the whole system of prote