220kV变电站主接线设计

220kV变电站主接线设计(论文20000字)
摘要：本文是关于220kV变电站一次系统接线设计，主要内容是对主接线，主变压器的讨论分析，基于MATLAB仿真的短路电流计算以及主要电气设备的选择。在电气主接线的选择中，讨论了单母线分段接线，双母线接线以及双母线带旁路接线三种不同类型的主接线，通过分析对比选择最合理的接线类型；在配电站的主变压器部分，重点是根据系统设计的要求，对变压器的型式，相数和容量计算选择；针对短路电流的计算，通过MATLAB进行仿真，分析对比仿真与理论计算，验证仿真的正确性；在电气设备方面，主要考虑了断路器、互感器、母线选择等问题，并作了简要的校验；最终形成了完整的220kV变电站主接线设计图。
关键词：变电站；主接线；MATLAB仿真；短路电流；电气设备
 
Main Wiring Design of 220kVSubstation
Abstract: This article is mainly about the 220kV substation of a wiring design, the main content is the main wiring choice, the choice of the main transformer, short circuit current MATLAB simulation and the selection of major electrical equipment. In the selection of electrical main wiring, the main wiring of three types of busbar connection, double busbar connection and double busbar bypass wiring are discussed. The most reasonable wiring type is selected by analyzing and comparing. The main transformer selection is mainly According to the requirements of the system design, the phase number, type and capacity of the transformer are selected. For the calculation of the short-circuit current, the simulation is carried out by MATLAB, which simplifies the calculation and makes the short-circuit current more accurate. In the electrical equipment, Considering the circuit breaker, isolating switch, current carrying conductor, transformer and reactive power compensation, and made a brief check; the final formation of a complete 220kV substation main wiring design.
Key words:substation; main wiring; MATLAB simulation; short circuit current; electrical equipment
 

目录
1 绪论    3
1.1研究背景    3
1.2国内外研究现状    3
1.3本次设计主要内容    3
2.主接线设计    4
2.1接线设计要求    4
2.2主接线的类型    5
2.3本章小结    7
3.主变压器设计    7
3.1主变型式的选择    7
3.2主变压器台数的选择    7
3.3主变压器的容量选择    8
3.4变压器的接地方式    8
3.5本章小结    8
4.短路电流计算    9
4.1仿真模型的建立    9
4.2仿真参数的计算    10
4.3仿真结果的分析    13
4.3.1 220kV高压侧母线三相短路    13
4.3.2 110kV中压侧母线三相故障    14
4.3.3 10.5kV低压侧三相短路（分列运行）    16
4.3.4 10.5kV低压侧三相短路（两台变压器并列运行）    17
4.3.5 10.5kV低压侧短路故障（三台变压器并列运行）    18
4.4本章分析    19
5.电气设备    19
5.1断路器    19
5.2隔离开关    22
5.3母线    23
5.4互感器    23
5.4.1电流互感器    23
5.4.2电压互感器    24
6.避雷保护    25
6.1雷电危害    25
6.2雷电防护    26
6.3架空线路与变电站防雷措施    26
6.4本章小结    26
7.系统设计图    27
8.总结    27
参考书目:    27
附录：    29
致谢    30