本科毕业设计--低压电容器补偿柜设计.doc

本科毕业设计 （自然科学） 题 目： 低压电容器补偿柜设计 院（系、部）： 机电工程学院 学 生 姓 名： 指 导 教 师： 职 称 年 月 日 河北科技师范学院教务处制 摘 要： 电网中的电力负荷如电动机、变压器等，大部分属于感性负荷，在运行过程中需向这些设备提供相应的无功功率。在电网中安装并联电容器等无功补偿设备以后，可以提供感性负载所消耗的无功功率，减少了电网电源向感性负荷提供、由线路输送的无功功率，由于减少了无功功率在电网中的流动，因此可以降低线路和变压器因输送无功功率造成的电能损耗，这就是无功补偿。无功补偿是保持店里系统无功功率平衡、降低损耗、提高供电质量的一种重要手段。无功功率补偿装置是电力供电系统中不可缺少的、非常重要的组成部分。合理的选择补偿装置，可以做到最大限度的减少电网的损耗，提高电网的供电质量。本设计选用了NWK1-G型无功功率自动补偿进行无功功率的补偿，可使功率因数提高减小主变压器的容量及补偿点以前供电系统中各原件上的功率损耗。 关键词Abstract In the grid power load such as electric motors, transformers, most belong to the perceptual load, during operation of the need to provide the corresponding to the equipment of reactive power. In the power of installation parallel capacitor and reactive compensation equipment after, can provide the perceptual load consumption in the reactive power, reduce the power grid to perceptual load by lines of conveying provide, reactive power, because the reduction in the grid power in reactive power flow, so can reduce the lines and transformer for conveying reactive power caused by electric power, this is the reactive power compensation. The reactive power compensation is to keep the store system reactive power balance, reduce loss to the quality of power supply, one important method. Reactive power compensation device is electric power supply system of indispensable, very important part. The choice of reasonable compensation device, can do minimize losses in the power grid, and improve the quality of power supply of power grid. This design choose the NWK1-G type of reactive power compensation for automatic reactive power compensation, can make