某柴油机厂全厂总配变电所及配电系统设计.pdf

某柴油机厂全厂总配变电所及配电系统设计 摘 要 工厂供电就是指工厂所需电能的供应与分配。众所周知，电能是现代工业生产 的主要能源和动力。电能的输送，既简单经济又易于调节，控制和测量。有利于实 现生产过程自动化。本设计共有七章，较全面地介绍了变配电所的设计方法，包括 电力负荷及其计算，短路电流及其计算，变配电所的一次系统，工厂的电力线路， 工厂的过电流保护以及电气装置的接地和防雷等知识。 在设计中，第一章厂区的负荷情况为例，介绍了负荷的计算包括有功功率、无 功功率和视在功率的计算方法以及无功功率的补偿。第二章根据计算负荷选择变压 器的数量和容量。第三章是短路电流的计算，选取几个主要短路计算点， 利用标 幺制法对其进行短路电流计算。第四章和第五章都是在计算短路电流的前提下选取 电力线路和高、低压一次设备。在变配电所高、低压设备的选择上，先简单介绍了 几种常见的设备，再根据设计实例进行设备的选择与校验。在第六章对电力线路及 主变压器进行过电流继电保护。在设计中有主次、先后地介绍工厂供电的设计步骤， 通过实例可以对类似的变电所的设计举一反三 关键词：计算负荷，三相短路电流，电力变压器，过电流保护 I 某柴油机厂全厂总配变电所及配电系统设计 Abstract In factory ,electric power supply is provide and assign manufactory ‘s electricity. Well-know, electricity is modern industrial production’s mostly energy sources and power transportation electricity is propitious to implement auto matization The design includes seven parts, introducing the method of design roundly. It includes electric power load, short －circuit current and theirs counting, choosing primary equipment and electric power line and so on. In my design, the part one introduces the calculated load, active power, reactive ower and reactive power compensation, taking the electric power load for example. Part two is choosing of power transformer according to calculated load. The third part, the counting of short －circuit current uses method. Next two parts premise short －electric current, selecting high and low primary equipment. The electric power line and power transformer are furnished by over －current protector in the sixth part. The design introduce the process of power supply primarily and secondarily and also in order, and able to draw inferences about other cases from one instance. Key words: calculated load, short－circuit current, power transformer, over －current protect