马军峪煤供电设备选择毕业论文.doc

马军峪煤供电设备选择毕业论文 目 录 山西马军峪煤焦有限公司概况··························5 第一章 概述········································8 1.1矿井简介········································8 1.2采区变电所及配电点位置的确定·······················8 第二章 负荷计算与无功补偿··························10 2.1用电设备功率的确定·······························10 2.2需用系数法计算负荷·······························10 2.3单相用电设备的计算负荷····························12 2.4变电所总负荷的计算·······························13 2.5功率因数的提高···································13 2.6主变压器的选择与无功功率补偿·······················16 第三章 采区供电系统的拟定··························18 3.1井下电压等级的确定·································18 3.2采区供电系统的拟定·································18 第四章 短路电流的计算······························20 4.1短路电流的计算···································20 4.2计算短路电流的目的································20 4.3三相短路电流的计算方法·····························21 4.4短路电流计算·····································23 4.5矿用电气设备整定值································30 第五章 继电保护····································33 5.1变电所继电保护的配置情况···························33 5.2主变压器的继电保护·······························33 第六章 电气设备的选择······························39 6.1按使用场所选择电气设备的类型························39 6.2高压配电箱的选择································39 6.3低压电气设备的选择······························40 6.4低压电气设备电气参数的选择·······················41 第七章 接地保护···································42 7.1地面变电所保护接地网····························42 7.2井下保护接地网·································42 第八章 总结·······································45 附录1【我的师傅】 附录2【岗位认识】 参考文献 山西马军峪煤焦有限公司概况 山西马军峪煤焦有限公司是常平集团控股的煤炭主体企业之一。山西常平集团有限公司是一家以钢铁为龙头，煤矿、铁矿、焦化、煤气发电为配套，房地产、旅游为补充的综合性大型民营企业。2010年实现产值52亿元，上缴国家税金2.47亿元，企业连续十年入围全国民营企业500强，全国成长企业100强，全省工业企业30强。常平集团有限公司位于壶关县常平经济开发区境内。董事长兼总经理陈忠孝是全国政协委员、全国工商联执委，并先后荣获“全国劳动模范”、“全国优秀乡镇企业家”、“优秀中国特色社会主义建设者”、“中国光彩事业奖章”、“中国乡镇企业十大新闻人物”、“中国农村新闻人物”、“全国首届百名慈善人物”等荣誉称号。 山西马军峪煤焦有限公司位于沁源县聪子峪乡三义村，注册资本5260.5万元，资产总额28亿元，拥有井田面积36.8km2，保有储量2.14亿吨。公司现有两对生产井（山西马军峪煤焦有限公司、山西马军峪曙光煤业有限公司）、一对基建井（山西马军峪常信煤业有限公司），共有员工1200余人。2010年生产原煤98.05万吨，实现销售收入47281万元，上交利税10