2021年高档别墅小区供配电系统标准设计概述.doc

高等级墅区供配电系统设计
摘 要
此次设计题目为小区供配电系统设计，该系统经过降压变压器和10kv公共电源干线相连，然后向学校
供给电能。该小区包含了别墅区，用电负荷较大，对供电可靠性要求也较高。所以，必需采取可靠性较高接线形式。
此次设计关键内容包含：负荷计算、短路电流计算、电气主接线设计、电气设备选择和校验（包含主变压器选择、断路器及隔离开关选择和校验、导体选择和校验、电流互感器选择和校验、电压互感器选择和避雷器选择等）和变配电所部署和结构设计。其中，主接线代表了变配电所主体结构，它对多种电气设备选择、配电装置部署、继电保护、自动装置和控制方法确实定全部有决定性关系，并将长久影响电力系统运行可靠性、安全性、灵活性和经济性。
在设计过程中，本人参阅了大量供配电系统设计、变配电所设计、建筑电气设计规范等相关规范和设计手册，最终对该校供配电系统进行了初步设计。本设计为毕业设计，其目标是经过设计实践，综合利用所学知识，理论联络实际，锻炼独立分析和处理电气设计问题能力，为未来工作奠定坚实基础。
关键词：变压器、电气主接线、电气设备、继电保护
Abstract
This design topic is the power supply and distribution system for a residence community, this system is connected with the public line of 10kV through step-down transformers, and distribute electrical power to the residence community. The residence community include Villa area section. The electrical charge is big , and the residence community’ demand of reliability of power supply is high, using the high reliable wiring form.
This design main content includes: the charge computation, short-circuit current computation, electrical main wiring design, electrical equipment choice and verification (including main voltage transformer choice, circuit breaker and disconnecting switch with check-up, conductor choice with check-up, current transformer choice with check-up, voltage transformer choice with check-up and lightning protector choice and so on),the disposal and configuration of the transformer substation design. Between them, the electrical main wiring has represented the main bodies structure of the substation, it has the decisive relations about the electrical equipment choice, the power distribution equipment arrangement, the relay protection, the decision of automatic device and the control mode ,and it has long-term influence about the reliability，security， flexibility and efficiency of the electrical power system movement.
In order to finish the design, I referring to the power supply and distribution design standard, the transformer su