摘要：变电所是用来变化电压和再分配电能的电力站。本选课题所设计的是220kV变电所规划设计，主要是担任那220kV与110kV两电压的品级的功率地互换，尽可能选经济、简单适用的电气主接线以及一次设备和二次设备把接受的功率被发送到线路的110kV侧。尽可能选经济、简单适用的电气主接线设备电气设备及无功装置去进行了选择和分析，短路电流等重要参数大量计算，在此基础上设计了相关的保护系统，尽可能选经济、简单适用电气主接线以及一次设备和二次设备最终给总平面布置方案。

本篇给出了对某水电的设计计划，包含了主接线方案的设计挑选的计算。尽可能选经济、简单适用的电气主接线设备通过对于水电站的主接线设计，主接线的方案可能选经济、简单适用的电气主接线以及设备短路，电气检测，重要的电气设备型号敲定，完成了水电站重要的规划。

实现了对水电站电气主接线论证，尽可能选适用的电气主接线以及一次设备和二次设备短路电流的计算，设备的选择计算，的校验、电气设备的型号及确定做了仔细的理论的探讨，而对其他方面分析简便，这有待不断去探讨。

关键词： 水电厂；变压器；短路电流 ；电气主接线；变电所；短路电流；电气一次设备。

ABSTRACT：The transformer is a power station that changes voltage and redistributes electricity. Designed by this selected topic is a 220 kv substation planning and design, mainly for the two 220 kv and 110 kv voltage grade of power to swap, as far as possible choose simple economic, applicable to the main electrical wiring and primary equipment and secondary equipment to accept power is sent to the lines of 110 kv side. As far as possible choose economic, simple, applicable to the main electrical wiring equipment electrical equipment and reactive power device to select and analyzed, the important parameters, such as a large number of short-circuit current calculation, the related protection system on the basis of the design, as far as possible choose simple economic, applicable to the main electrical wiring and primary equipment and secondary equipment to provide general layout plan.

 This paper presents a design plan for a hydropower project, including the design selection of the main wiring scheme. As far as possible choose economic and simple to apply the main electrical wiring equipment through for the main wiring design of hydropower station, the main wiring scheme may choose simple economic, applicable to the main electrical wiring short circuit, and equipment, electrical testing, important electrical equipment model is finalized, completed the important planning of hydropower stations.

 For hydropower station, the main electrical wiring, as far as possible choose for the main electrical wiring and primary equipment and secondary equipment of short-circuit current calculation, equipment selection calculation, check, the electrical equipment model and determine the careful theory discussion, and other aspects of analysis is simple, it needs to be continuously to explore.

keywords: water power plant; Transformer; Short circuit current, electrical main connection; Substation; Short circuit current; Electrical equipment.

目  录

第一章  前言 1

1.1莲花变电所设计任务 1

1.1.1变电所的规模 1

1.1.2回路 1

1.1.3系统计算资料 1

1.2水电站电气部分研究的背景 2

1.3本课题的研究意义 2

1.3.1电站电气主接线的论证意义 2

1.3.2  电气一次设备和二次设备选择及计算的意义 3

1.3.3  短路电流计算的意义 3

1.3.4  本课题研究的现实意义 3

第二章  凌江水电厂电气设计具体内容 4

2.1主接线方案确定 4

2.1.1电气主接线释名 4

2.1.2主接线方案 4