阳光花园住宅小区电气设计计算书.doc

1、目 录摘要IAbstractII前言11 工程概况11.1 住宅小区概况11.2 电气设计要求11.3 电气设计内容11.4 电气设计成果12 住宅小区负荷计算22.1 小区负荷分析22.2 负荷计算22.3 无功计算及补偿42.3.1 补偿电容的接线方式42.3.2 无功补偿的方式52.3.3 电容器补偿容量52.3.4 电容器选型63 短路电流计算63.1 短路电流计算的目的和内容63.2 短路电流计算原则73.3 短路电流计算的步骤74 变电所方案114.1 变电所设置简述114.2 变电所选址与设置114.3 变电所位置选择124.4变电所型式方案选择125 主变压器的选择125.1

2、变压器数量的选择135.2 变压器容量的确定136 变电所主接线方案136.1 变电所主接线型式136.2 变电所主接线布置147 电气设备的选择147.1 简述147.2 高压设备的选择147.3 低压设备的选择167.3.1低压断路器的选择与校验167.3.2配电柜低压断路器的选择与校验187.3.3低压电流互感器的选择与校验207.3.4刀开关的选择与校验207.3.5低压配电柜型号的选择208 变电所导线的选择218.1 高压侧线路的选择与校验218.1.1高压电缆的选择与校验218.1.2高压母线的选择与校验228.2低压侧线路的选择与校验238.2.1低压电缆的选择与校验238.2

3、.2低压母线的选择与校验259 变电所继电保护设计原理269.1 变电所继电保护种类269.2 变压器的继电保护269.3 高压出线保护289.4 高压母线保护3010 防雷与接地3110.1 简述3110.2 变电所防雷措施3110.3变电所接地措施3110.4接地开关的选择32参考文献33致谢34附录35CONTENTSIntroductionIAbstractIIPreface11 Engineering Survey11.1 Residential area survey11.2 Electrical design11.3 Electrical design content11.4 E

4、lectrical design results12 Residential district load calculation22.1 Residential load analysis22.2 Carry the residenttial load reckoning22.3 Residential load analysis42.3.1 Reactive power calculation and compensation42.3.2 Reactive power compensation way52.3.3 Reactive power compensation capacity52.

5、3.4 Capacitor selection63 Calculation of short-circuit current63.1 The significance and content of the short-circuit current calculation63.2 Calculation method of short-circuit current73.3 Selection of short-circuit calculation points74 Substation scheme114.1 Sets of power substation114.2 Substation

6、 layout and structure scheme114.3 Substation location choice124.4 Substation type scheme selection125 Determine the number and capacity of main transformer125.1 Choice of transformer number135.2 Transformer capacity and number136 Substation main wiring scheme136.1 Substation main wiring scheme136.2

7、Substation main connection type147 Choice of transformer primary equipment147.1 Sum147.2 The choice of high-voltage equipment147.3 Selection of low pressure primary equipment167.3.1 Selection and verification of low voltage circuit breaker167.3.2 Selection and verification of low voltage switchgear1

8、87.3.3 Selection and verification of current transformer207.3.4 Selection and verification of knife switch207.3.5 Selection and verification of low voltage primary equipment208 The choice of substation high and low voltage line218.1 High voltage side line selection and verification218.1.1 High volta

9、ge side line selection and verification218.1.2 Selection and verification of high-voltage cable228.2 High voltage bus selection and verification238.2.1 Selection and verification of low voltage side line238.2.2 Selection and verification of low-voltage cable259 Substation relay protection design pri

10、nciple269.1 Relay protection type269.2 Substation relay protection type269.3 Substation 10kV feeder protection289.4 Substation 10kV bus protection30 10 Lightning protection and grounding3110.1 Sum3110.2 Protection of lightning over-voltage3110.3 Substation grounding measures3110.4 Selection of earth

11、ing switch32Reference33Acknowledgement34Appendix35阳光花园住宅小区电气设计摘要： 本次所设计的课题是阳光花园住宅小区供配电系统及18号住宅楼供配电的初步设计。该供电系统是由独立的变配电所组成的住宅小区专用的降压变电系统，具有10kV和380V两个电压等级，10kV一侧接与供电局提供的10kV电源，380V主要用于小区用户的用电。本设计是以我国现行的各有关规范规程等技术标准为依据，再根据任务书提供的原始资料，参照有关资料及书籍，对各种方案进行比较而得出最为合适的方案，同时考虑到供电系统的安全性、可靠性及经济性。本计算书通过对主接线的设计，短路电流

12、的计算，主要电气设备型号和参数的确定，电气设备的动热稳定校验，无功补偿的设计，防雷和过电压保护装置的设计等较为详细地完成了本变电所的设计。18号住宅楼电气设计主要包括照明配电，弱电设计，防雷与接地等内容。关键词：负荷计算 继电保护 短路计算 防雷接地 Electrical Design Of Residential District In South Campus Of Abstract The subject of this design is the preliminary design of the 10kV power supply system and 18# residential

13、 building distribution system for the South Campus of Shandong Agricultural University. The power supply system is composed of independent variable distribution of residential special step-down variable electric system, with 10kV and 380V two voltage levels, 10kV side connected with power supply bur

14、eau provides the 10kV power supply, 380V is mainly used for residential users of electricity. Design based on Chinas current relevant standards technical standards as the basis, according to the task book provide original data, with reference to the relevant information and books, comparison that th

15、e most suitable solution to various kinds of schemes, and taking into account the power system security, reliability and economy. The specification through to the transformer substation main wiring design, short-circuit current calculation, determination of main electrical equipment models and parameters, the electrical equipment of t