本科生毕业设计( 论文 )手册

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1、中国石油大学胜利学院本科生毕业设计(论文)手册学生姓名：马静学号：200808011419专业班级：2008级电气工程及其自动化指导教师：朱玉华2012年6月20日目录一、任务书··················································································································1二、开题报告················································································

2、······························4三、指导记录··············································································································7四、中期检查表··········································································································9五、指导教师评语····················

3、················································································10六、答辩记录表········································································································11七、答辩小组评语·······················································································

4、·············13八、成绩汇总表·········································································································13本科生毕业设计（论文）任务书论文题目低压动态无功功率补偿装置的设计与实现一．研究的主要内容随着电力系统负荷的增加，对无功功率的需求也日益增加。无功功率在电网中传输会造成网络损耗以及受电端电压下降，使电能利用率大大降低且严重影响供电质量。因此，在电网中的适当位置装设无功补偿装置是满足电网无功需求的必要手段。　为提高供电设备

5、效率，减少供电线路电能损失，国内外自上世纪50年代初就开始进行无功功率补偿装置的研究工作，其方法主要有两种：一种是在电网上并联电容器，通过提高电网的功率因数达到减少线路电压损耗，提高供电设备利用率的目的；另外一种是在电网上并入同步电动机，通过改变同步电动机励磁电流的方法来改变电路负载特性。其中前一种方法适用于居民、商业及小型工厂的低压供电系统，而后一种方法适用于大型工厂中的无功功率补偿。近年来，随着国民经济的跨跃式发展，电力负荷的快速增长对无功的需求也大幅度上升，无功补偿为改善电压质量起着重要作用。同时，随着粗放型经济向高科技、高技术转变，对电能质量的要求也显著提高，而配电

6、网中整流器、变频调速装置、电孤炉、各种电力电子设备以及电气化铁路大量应用。这些负荷具有非线性、冲击性和不平衡的用电特性，对供电质量造成严重污染，对电力系统的安全运行形成了严重危害，特别严重的是谐波造成系统发生某次特征谐波的谐振，造成系统过电压，危及系统和设备安全运行。而无功补偿的主要装置并联电容器组对谐波起着放大作用。因此，有源滤波已受到各方的关的重视。一般情况下，电力系统中发电机所发的无功功率和输电线的充电功率不足以满足负荷的无功需求和系统中无功的损耗，并且为了减少有功损失和电压降落，不希望大量的无功功率在网络中流动。所以在负荷中心需要加装无功功率电源，以实现无功功率的就

7、地供应、分区平衡的原则。也就是在需要消耗无功功率的地方产生无功功率，这就是要讨论的无功补偿。9二．有关要求1.中外文献查阅要求查阅中外文相关文献不少于20篇。2.外文翻译要求阅读和翻译与课题有关的外文资料，完成译文不少于5000汉字。3.论文撰写要求论文的撰写要求见中国石油大学胜利学院本科毕业设计（论文）撰写规范主要参考资料[1]戴晓亮.无功补偿技术在配电网中的应用[J].电网技术,1999,23(6). [2]曹光祖.应系统地重视分散和终端无功补偿[J].低压电器,1999,(5). [3]张勇军,任震,廖美英.