500KV变电所电气一次设计(详细,规范模板)

关键词：变电站；主接线；短路电流；变压器
500kv 变电站电气一次部分初步设计
THE DESIGN OF THE FIRST PART ABOUT THE 500KV TRANSFORMER SUBSTATION
ABSTRACT
China's economy in recent years with the continued development of increasingly highlighted the importance of energy. Power system in the industry increases the proportion of the modern power system is a large and the overall position of leadership. Various types of power plants, substations complete the power system division of power generation, substation and distribution tasks. Power system is an important national energy sector, and substation design is essential for the construction of the power industry as a project. The design of the book introduces the regional 500kV electrical substation design a part of the content and design. The design of the contents of the electrical substation 500kV main regional cable choice, the main transformer, the transformer used in the choice of bus, circuit breakers and isolation switch option, the configuration of transformer, 500kV, 220kV, 35kV line choice and short-circuit current calculations. The design of the main high pressure also had a choice of electrical equipment and computing, such as circuit breakers, isolating switches, voltage transformers, current transformers and so on. In addition, a lightning protection design and computing, increased the safety of the entire substation. The design of the book including the designing specification, calculating and selecting book and the drawings.
500kv 变电站电气一次部分初步设计
500kV 变电站电气一次初步设计
摘要
随着近些年来我国经济的持续发展，能源的重要性日趋凸显。电力系统在整个行业 中所占的比例逐渐增大， 现代电力系统是一个庞大且有领导性地位的整体。 各类发电厂、 变电站分工完成整个电力系统的发电，变电和配电任务。电力系统是国民经济的重要能 源部门，而变电站的设计是电力工业建设中必不可少的一个项目。 设计的内容有 500kV 枢纽变电站的电气主接线的选择，主变压器的选择，母线、断 路器和隔离开关的选择，电流互感器及电压互感器的配置，500kV、220kV、35kV 线路 的选择和短路电流的计算。 设计中还对主要高压电器设备进行了选择与计算， 如断路器、 隔离开关、电压互感器、电流互感器等。此外还进行了防雷保护的设计和计算，提高了 整个变电站的安全性。 本设计书包括原始资料分析、设计说明书、计算书。
Key words: 500kV substation; main connection; short-circuit current; transformer
500kv 变电站电气一次部分初步设计
目
录
1 变电站原始资料......................................................................................................... 1 2 设计说明书............................................................................................................... 2 2.1 电气主接线选择 .......................................................................................................... 2 2.1.1 主接线基本要求 ................................................................................................ 2 2.1.2 主接线设计原则及步骤 .................................................................................... 2 2.1.3 主接线基本接线形式及特点 ............................................................................ 4 2.1.4 主接线方案确定 ................................................................................................ 7 2.2 站用电选择 ................................................................................................................ 10 2.2.1 站用变压器选择 .............................................................................................. 10 2.2.2 站用电接线 ...................................................................................................... 10 2.3 无功补偿装置选择 .................................................................................................... 11 2.3.1 无功补偿装置选择要求 .................................................................................. 11 2.3.2 无功补偿装置选择结果 .................................................................................. 12 2.4 主变压器选择 ............................................................................................................ 12 2.4.1 主变压器台数和容量确定 .............................................................................. 12 2.4.2 主变压器形式和结构选择原则 ...................................................................... 12 2.4.3 主变压器选择结果 .......................................................................................... 13 2.5 短路电流计算 .......................................................................................................... 13 2.5.1 短路电流计算原则 .......................................................................................... 13 2.5.2 短路电流计算结果 .......................................................................................... 14 2.6 主要电气设备选择 .................................................................................................... 14 2.6.1 断路器选择 ...................................................................................................... 15 2.6.2 隔离开关选择 .................................................................................................. 16 2.6.3 电流互感器选择 .............................................................................................. 17 2.6.4 电压互感器选择 .............................................................................................. 19 2.6.5 导体选择 .......................................................................................................... 21
Hale Waihona Puke Baidu
500kv 变电站电气一次部分初步设计
2.7 限流电抗器选择 ........................................................................................................ 23 2.8 绝缘子和绝缘套管选择 ............................................................................................ 23 2.9 防雷设计 ................................................................................................................... 24 2.9.1 避雷针设计 ...................................................................................................... 24 2.9.2 避雷器设计 ...................................................................................................... 25 2.10 配电装置及电气平面布置 ...................................................................................... 26 2.10.1 配电装置 ........................................................................................................ 26 2.10.2 电气平面布置 ................................................................................................ 27 3 设计计算书 ............................................................................................................. 28 3.1 短路电流计算 ............................................................................................................ 28 3.1.1 等值网络图化简 .............................................................................................. 28 3.1.2 变压器各绕组电抗标幺值计算 ...................................................................... 29 3.1.3 各电压等级短路电流计算 .............................................................................. 29 3.2 无功补偿装置选择计算 ............................................................................................. 32 3.3 电气设备选择计算 .................................................................................................... 33 3.3.1 500KV 侧电气设备选择 .................................................................................. 33 3.3.2 220KV 侧电气设备选择 .................................................................................. 37 3.3.3 35KV 侧电气设备选择 .................................................................................... 40 3.4 导体选择 .................................................................................................................... 44 3.4.1 500KV 侧母线选择 .......................................................................................... 44 3.4.2 220KV 侧母线选择 .......................................................................................... 45 3.4.3 35KV 侧母线选择 ........................................................................................... 46 3.5 避雷针保护范围 ........................................................................................................ 44 总结 ........................................................................................................................... 48 参考文献 .................................................................................................................... 49 致谢 ........................................................................................................................... 50