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1、220kV 变电站一次系统设计I摘要发电厂及电力系统专业的毕业设计是培养学生综合运用大学三年所学理论知识，独立分析和解决工程实际问题的初步能力的一个重要环节。本设计是根据“发电厂及电力系 统”毕业任务书的要求，综合大学三年所学的专业知识及电力工程电气设计手册 ， 电 力工程电气设备手册等书籍的有关内容，在指导教师的帮助下，通过本人的精心设计 论证完成的。整个设计过程中，全面细致的考虑工程设计的经济性，系统运行的可靠性， 灵活性等诸多因素，最终完成本设计方案。 本设计说明书是根据毕业设计的要求，针对 220/110kV 变电所毕业设计。本次设计主要是一次变电所电气部分的设计，并做出阐述和说明。
2、设计包括选择待设计变电所所含有的各种电气设备，及其各项参数，并且通过计算， 详细的校验了各种不同设备的热稳定和动稳定，并对其选择进行了详尽的说明。 经过变压器的选择和变电所所带负荷情况，最后确定本变电所电气主接线方案和高 压配电装置及其布置方式。 论文包括设计的说明和设备选择的计算，并附有设计图纸（电气主接线图一张、变 电所断面图两张、平面布置图一张） ，可为以后的设计做些参考。 由于时间紧张和能力有限，此论文中难免会出现遗漏和错误，希望老师给予指点和 更正。 最后，感谢各位老师给予我的帮助和大力支持，正因为你们精心的指导本次论文才 得以更好的完成，再次表示深深的感谢！关键词关键词 电力系统，
3、变电所，电气设备沈阳工程学院毕业设计IIAbstractThe power plant and the electrical power system specialized graduation project is trains the student to synthesize the utilization university three years institute to study the theory knowledge, independent analysis and a solution project actual problem preliminary abilit
4、y important link.This design is according to “the power plant and the electrical power system” the graduation project description request, the comprehensive university three years institute studies the specialized knowledge and “Electric power project Electricity Design Handbook“, “Electric power pr
5、oject Electrical equipment Handbook“ and so on the books related contents, in instruct under teachers help, completes through myself careful design verification.In entire design process, comprehensive careful consideration engineering design efficiency, system movement reliability, flexible and so o
6、n many factors, is final the cost design proposal. This design instruction booklet is according to the graduation project request, in view of 220/110kv voltage dropping resistor transformer substation graduation project paper.This design mainly is a transformer substation electricity part design, an
7、d makes the elaboration and the explanation. The paper including chooses the transformer substation the main transformer capacity, the Taiwan number and the form, the choice treats designs each kind of electrical equipment and each parameter which the transformer substation includes.through the comp
8、utation. the detailed verification each kind of different equipment thermally stable and moved stably, and has carried on the exhaustive explanation to its choice.Simultaneously passes through the thermally stable and moved stably, and has carried on the exhaustive explanation to its choice.Simultan
9、eously passes through the transformer choice and the transformer substation has the load situation, Finally, thanks for each teacher to cive my help with support strongly, positive because you with meticulous care of leading this thesis just can better complete, mean the profound with gratitude agai
10、n!Key word electric power system ，substation，electricity equipment220kV 变电站一次系统设计III目录摘要.IABSTRACT.II1.绪论.- 1 -1.1 国内外变电站发展趋势.- 1 - 1.2 无人值班变电站.- 2 - 1.3 变电站自动化.- 2 -2.电气主接线设计.- 3 -2.1 主接线的设计原则和要求.- 3 - 2.1.1 电气主接线的设计原则.- 3 - 2.1.2 设计主接线的基本要求.- 4 - 2.2 本变电站电气主接线设计.- 5 - 2.2.1 110kV 电压侧接线.- 5 - 2.2.2 220kV 电压侧接线.- 7 -3. 短路电流计算.- 10 -3.1 短路电流计算的目的.- 10 - 3.2 短路电流计算的一般规定.- 10 - 3.3 电路元件参数的计算.- 11 - 3.4 等值电源的计算.
