泰安南开发区110kV变电所设计计算书.doc

1、目 录摘要5Abstract6前言71 毕业设计任务71.1 设计题目71.2 设计的原始资料71.3 设计任务82 负荷分析及计算和主变的选择82.1 负荷计算的目的82.2 负荷分析92.3 主变压器的确定93 变电所主接线的选择113.1 对电气主接线的基本要求113.2 110kV侧接线的选择113.3 35kV侧接线选择123.4 10kV侧主接线选择134 无功补偿145 短路电流的计算145.1 计算各回路电抗145.2 计算各点短路点的最大短路电流156 配电装置及电气设备的配置与选择166.1 高压配电装置的配置166.2 高压断路器的选择166.3 隔离开关的选择206.4

2、 导线的选择216.5 互感器的选择236.6 避雷器的选择246.7 接地刀闸的配置257 测量仪表和继电保护的配置257.1 测量仪表的配置257.2 继电保护的配置258 所用电的分析288.1 所用变压器的选择288.2 所用电主接线选择289 防雷与接地289.1 防雷保护289.2 接地装置的设计2910 配电装置2910.1 配电装置概述2910.2 配电装置类型3010.3 对配电装置的基本要求和设计步骤3010.4 屋内配电装置3010.5 屋外配电装置3111 结束语32参考文献33致谢34ContentsAbstract5Introduction71 Graduation

3、 design task71.1 Design topics71.2 Design of the original data71.3 Design task82 Load analysis and calculation and selection of main transformer82.1 The purpose of load calculation82.2 Load analysis92.3 The determination of the main transformer93 The choice of the substation main wiring113.1 Basic r

4、equirements of the main electrical wiring113.2 110 kv lateral connection options113.3 35 kv lateral connection options123.4 10 kv side main wiring options134 Reactive power compensation145 The calculation of short-circuit current145.1 Calculating reactance of each circuit145.2 The biggest short-circ

5、uit current calculation of short-circuit point point156 Distribution equipment and electrical equipment configuration and selection166.1 High voltage power distribution equipment configuration166.2 The choice of the high voltage circuit breaker166.3 The choice of isolating switch206.4 The selection

6、of the conductor216.5 The selection of the transformer236.6 The selection of surge arrester246.7 Grounding and the configuration of the breaker257 Measuring instrument and the configuration of relay protection257.1 Measuring instrument configuration257.2 The relay protection configuration258 By the

7、analysis of the electricity288.1 The choice of transformer is used288.2 The main electrical wiring289 Lightning protection and grounding289.1 Lightning protection289.2 The design of the grounding device2910 Distribution equipment2910.1 Distribution equipment overview2910.2 Distribution equipment typ

8、e3010.3 On the basic requirements of power distribution equipment and design steps3010.4 The room power distribution unit3010.5 Distribution equipment outside3111 Conclusion32References 33Acknowledgement 34泰安南开发区110kV变电所设计摘要：本文主要进行110KV变电站设计。首先根据任务书上所给系统及线路和所有负荷的参数，通过对所建变电站及出线的考虑和对负荷资料分析，满足安全性、经济性及可

9、靠性的要求确定了110KV、35KV、10KV侧主接线的形式，然后又通过负荷计算及供电范围确定了主变压器台数、容量、及型号，从而得出各元件的参数，进行等值网络化简，然后选择短路点进行短路计算，根据短路电流计算结果及最大持续工作电流，选择并校验电气设备，包括母线、断路器、隔离开关、电压互感器、电流互感器等，并确定配电装置。本文同时对防雷接地及补偿装置进行了简单的分析，最后进行了电气主接线图及电气总平面布置图等的绘制。关键词：变电站设计，变压器，电气主接线，设备选择Design of 110kV substation in southern Taian Development ZoneAbstra

10、ct This paperdesign a 110KV substation.Firstly,according to the gaved system, electricity line and the parameters of load ,which provided by the assignment book,through considering the substation which will be built and feeders,analysising load materials,confirming the Main electrical wiring form of

11、 110KV、35KV、10KV side based on security,economy and reliability,then conform the numbers,volume and type of the main transformer through load calulation and supply district,thus getting the parameters of all the component,simplify electric circuit,select short point carry on short circuit calculatio

12、ns operation circuit, select and check out electrical equipment, including bus,breaker, disconnect switch, voltage transformer, current transformer and so on,so that conform the distribution apparatus.Configurating relay protection and setting-calculation for the electricity line,transformer and bus

13、 according to the load and short calculations.At the same time,this paper analyse simply lightning protection and grounding system.Finally,two pictures be drawed which include Main electrical wiring diagram and 110KV Power distribution equipment sectional drawing interval.KeyWords: Substation design

14、,Transformer,Main electrical wiring,Equipment election5前言设计是教学过程中的一个重要环节，通过设计可以巩固各课程理论知识，了解变电所设计的基本方法，了解变电所电能分配等各种实际问题，培养独立分析和解决实际工程技术问题的能力，同时对电力工业的有关政策、方针、技术规程有一定的了解，在计算绘图、编号、设计说明书等方面得到训练，为今后从事供电技术工作奠定基础。1 毕业设计任务1.1 设计题目泰安南开发区110kV变电所电气设计1.2 设计的原始资料1.2.1 建设性质及规模 待建变电所为终端降压变电所，拟定2台变压器。本变电所的电压等级分别为110kV、35kV和10kV。本变电所有2回110kV架空线路；5(4)回35kV出线及10(8)回10kV出线（其中有2回备用）。变电所配有10kV无功补偿装置。1.2.2 系统情况系统容量：S=1000MVA, X=0.36; (电抗为以电源容量为基值的标么值 )两条110KV进线均为LGJ-150，线路长度一条为16km , 另一条为14km1.2.3 待建变电所各电压等级负荷数据 （1）110kV电压等级：2回线路与系统相连。（2）10kV电压等级（表11所示）表11 10kV电压等级负荷用电单位最大负荷(MW)（）功率因数COS回路数供电方式