## 110KV变电站的设计

110 kV step-down transformer substation design
Abstract：Substation is an indispensable part of in the power system, safe and economic operation of power grid plays an important role, provides the high quality life for people effective power supply scheme. This graduation design is designed with 110 kv substation as an example, this paper discusses the electric power system transformer substation electrical design a part in the project process. By considering from safety, economy, reliability and other aspects, to determine the 110 kV, 10 kV substation main wiring design, and design calculation of the load, electrical wiring design, short-circuit current calculation, electrical equipment dynamic and thermal stability check, models and parameters determination of the main electrical equipment, and calibration of electrical equipment, including bus, circuit breaker, isolating switch, current transformer, voltage transformer, etc., and determined the distribution equipment. And operation mode analysis, the design of the lightning protection and overvoltage protection, circuit design of primary side and the reactive power compensation scheme design, completed the substation in the power system design in detail. 源`自*六)维[论*文'网www.lwfree.cn
Key Words：transformer substation；short-circuit current；the selection of equipment；transformer

1 绪论    1
1.1 110kV变电站研究的目的意义    1
1.2 110kV变电站发展情况    1
1.2.1 变电站中关于高压配电装置的发展情况    2
1.2.2 110kV变电站的应用现状    2
1.3 课题的主要指导思想和问题    2
1.3.1 变电站的电路连接倾向于简化    2
1.3.2 更多的新型一次电气设备    3
1.3.3 变电站的用地面积减少    3
1.3.4 主要问题及要点、难点    3
2 负荷计算    4
2.1 无功功率    4
2.2 无功补偿    4
3 变压器选择    5
3.1 选择原则    5
3.1.1 相数    5
3.1.2 绕组数及结构    5
3.1.3 绕组接线组别确定    6
3.1.4 调压方式    6
3.1.5 冷却方式    7
3.2 主变选择    7
3.2.1 变压器容量    7
3.2.2 变压器形式    7
3.2.3 调压和冷却方式    7
3.2.4过负荷能力校验    7
3.3 本变电站站用变压器的选择    7
4 主接线选择    9
4.1 电气主接线的要求、原则    9
4.1.1 电气主接线的要求    9
4.1.2 电气主接线的原则    10
4.2 电气主接线的选择    11
4.2.1 内桥接线    11 110KV变电站的设计:http://www.lwfree.cn/zidonghua/20181226/28305.html
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