搜索
毕业论文(设计)课题名称：工程机械制造厂供电系统设计学生姓名学号：王帅兵113220171所在院系：电气信息工程学院专业年级：电气工程及自动化专升本2011级指导教师及职称：王雪晴助教毕业日期:2013年6月25日2013年03月16日摘要该设计是关于工程机械制造厂供电系统及变电所的设计。设计的思路是依据国家规范要求以及该厂二类负荷对供电可靠性的要求，制定设计方案及供电措施。该企业的供电系统由一条35KV高压进线和一条10KV高压进线电源提供，为确保负荷供电的可靠性，在高压侧又设有“单母线分段制”的电源供电方式，该设计中采用并联电容器的方法来补偿无功功率，以减少供电系统的电能损耗和电压损失，同时提高了供电电压的质量。设计中体现了安全、可靠、灵活、经济的原则。确定高压变配电所的位置、形式、数量及主变台数与容量等；确定二次继电保护方案，选用先进的自动保护装置；确定变电所防雷过压保护与接地保护方案；根据设计要求，绘制全厂供配电系统图，二次继电保护电路图及高压变配电所平、剖图等。关键字：供电系统，安全可靠，主接线SummaryThedesignisthedesignofthepowersupplysystemsandsubstationconstructionmachinerymanufacturer.Thedesignideaisbasedontherequirementsofthenationalregulatoryrequirementsaswellastheplanttwotypesofloadonthepowersupplyreliabilitytodevelopthedesignandsupplymeasures.Thepowersupplysystemoftheenterprise,toensurethereliabilityoftheloadpoweredbya35KVhighvoltageintothelineandaof10KVhighpressureintothelinesupplyinthehigh-pressuresideandasinglebusbarsystempowersupplymode,Thedesignembodiestheprincipleofasafe,reliable,flexibleandeconomic.Determinethepositionofthehigh-voltagesubstation,form,quantityandmaintransformerstationnumberandcapacity;determinethesecondaryrelayprogram,selectionofstate-of-the-artautomaticprotectiondevices;determinesubstationlightningovervoltageprotectionandgroundingprotectionprogram;accordingtodesignrequirements,todrawthewholeplanttothepowersupplyanddistributionsystemdiagram,thesecondaryprotectioncircuitdiagramandhigh-voltagesubstationlevel,cross-sectionaldiagram。Keywords:powersupplysystem,safeandreliable,themainconnection目录（文章结构基本可以，但其具体内容，参考别人的有多少自己最清楚，如果参考较多，请自己更改。）1概述改为绪论.................................................................................11.1工厂供电意义和要求.................................错误!未定义书签。1.2设计原则................................................................................71.3内容及步骤............................................................................72负荷计算........................................................................................92.1定义......................................................................................92.2负荷计算的方法....................................................................92.3负荷计算结果.........................................................................93供电系统及方式............................................................................163.1主接线方案.........................................................................164电容补偿.......................................................................................174.1车变一电容补偿..................................................................174.2车变二电容补偿..................................................................184.3主变电容补偿......................................................................194.4补偿装置选择......................................................................215变电所位置选择及变电所布置.....................................................215.1变电所位置选择..................................................................216短路电流计算...............................................................................216.1短路电流计算.......................................................................216.1.1公式...........................................................................226.1.2该供电系统的等效电路图如下....................................236.1.3短路计算：................................................................236.1.4短路电流计算............................................................277电缆、母线的选择........................................................................277.1概述....................................................................................277.235KV电缆选择....................................................................287.310kv电缆及母线的选择.......................................................287.3.110kv电缆的选择.........................................................297.3.210kv母线的选择.........................................................297.3.310/0.4变压器二次侧出线柜母线的选择.....................317.3.410/0.4变压器二次侧电缆的选择................................318高低压开关设备选择及校验..........................................................348.1选择条件..............................................................................348.2高压设备的选择..................................................................348.3低压侧设备选择及校验........................................................409继电装置整定及二次保护.............................................................479.1概述....................................................................................479.2继电保护装置的接线方式...................................................479.3继电保护装置的操作方式...................................................489.4电流速断保护......................................................................499.5电力变压器的继电保护.......................................................509.635KV电力变压器的保护......................................................52结论致谢参考文献1概述1.1工厂供电的意义和要求工厂供电，就是指工厂所需电能的供应和分配，亦称工厂配电。众所周知，电能是现代工业生产的主要能源和动力。电能既易于由其它形式的能量转换而来，又易于转换为其它形式的能量以供应用；电能的输送的分配既简单经济，又便于控制、调节和测量，有利于实现生产过程自动化。因此，电能在现代工业生产及整个国民经济生活中应用极为广泛。在工厂里，电能虽然是工