毕业设计--煤矿供电系统设计

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1、 论文题目：煤矿供电系统设计 专 业：电气工程及其自动化 本 科 生： （签名） 指导教师： （签名） 摘 要 本文根据黄家沟煤矿供电系统负荷统计的原始资料，依据地面和井下供电系统实际 的生产需求，经过地面和井下负荷计算、变压器选型设计等过程，对黄家沟煤矿供电系 统进行了全面的设计。 本设计对黄家沟煤矿从电源进线 110kV 侧开始，整个过程主要包括矿井全部负荷的 统计和计算，总降压变压器和低压变压器的选型设计，系统主接线方式选择，各种高低 压电器设备和电缆的选型设计，采用标幺值进行短路电流计算，并对电气设备和线路的 热稳定性、动稳定性及电压损失进行校验，供电系统的继电保护设计，变电所防雷设计

2、， 井下接地网的布局与设计等。 根据煤矿供电的特殊性要求，110kV 侧主接线为全桥接线，10kV 侧主接线为单母线 分段方式，两台变压器采用分列运行。 根据国家标准和煤炭行业标准，对煤矿供电系统高低压设备、线路等在技术参数、 性价比、企业检验标准等方面进行分析后完成选型设计，最终使整个供电系统满足全矿 井生产供电的需要。 关键词：供电系统，负荷计算，短路计算，设备选型，继电保护 Subject: Mine power supply system design Specialty: Electrical Engineering and Automation Name: (Signature)

3、Instructor: (Signature) ABSTRACT This article fully designs the power supply system of Huangjiagou Mine by the courses of surface and underground load calculation, the design of type selection of transformer and so on, according to the original datas of load ststistics of Huangjiagou Mine and the ac

4、tual production needs of surface and underground power supply system. The design of Huangjiagou Mine beginning at 110kV power line side, which is including load statistics and calculation, the design of type selection of low voltage transformer and main transformer, the run way of power supply syste

5、m, the power supply equipments and cables selection ,the short circuit current calculation, and the system uses short circuit to check the dynamic and thermal stability of equipments, the design of power system relay protection device, the design of substation lightning protection, underground groun

6、ding grid layput and design etc. Depending on the characteristics of coal power supply system, the 110kV side of the main terminal for the Full- bridge connection and the 10kV side of the main wiring for sectionalized single-bus configuration, the two main transformers operating mode use disaggregated way. The article finishes the designs of type selection on analysising the fields of the high and low voltage equi