1、220kV 一次降压变电所电气部分设计 - I - 中文摘要 本文主要对 220kV 一次降压变电所电气部分进行设计，根据任务书的要求，设计的主 要内容包括主变选择、电气主接线的拟定、短路计算、电气设备选择、配电装置的规划、 继电保护和自动装置的规划以及防雷保护的规划等主要工作。本文中对主变的选择、电气 主接线的拟定、配电装置的规划、继电保护和自动装置的规划进行了详细的说明，特别是 对主变继电保护的规划、动作原理等内容进行了深入的研究和思考。本文重点的计算部分 包括短路计算、设备的选择校验计算、和避雷针的保护范围计算等部分。其中短路计算包 括对称短路计算和不对称短路计算两部分，分别应用了计算曲
2、线和正序等效原则；防雷计 算中采用了等针高的计算方式。 本次设计既满足了电力系统的安全、经济、可靠、环保的基本要求，又重视了电力系 统的长期规划长远的发展，注重了解和应用电力系统的新技术新设备，变电所进行设计， 是一次较为综合性的实践过程。是对以往所学专业知识的系统总结和提高。本设计属于变 电所电气部分初步设计，能够基本满足任务书和毕业论文的总体要求。 关键词 变电所，电气系统，短路计算，电气设备 - II - Abstract In this paper The professional graduate in system in electric power design is once
3、more synthesize of training, it is we will during the period of school a profession for learning knowledge proceed theories and practice very good combination, make use of the theories knowledge proceeds with a profession for learning technical ability engineering design with science study. This gra
4、duate design thesis is a 220 kV declining to press to change to give or get an electric shock an electricity parts of first steps design. For the sake of dependable that guarantee the power supply with a request that contented long-term burthen, carries according to the forward the programming proce
5、eding design developments, from but guarantee to change to give or get an electric shock can long-term dependable power supply. This design not only meets the power system security, economic, reliable, basic requirements of environmental protection, but also to the long-term power system planning lo
6、ng-term development, focusing on understanding and application of new technologies and new power system equipment, substation design, is a more integrated practice. Is the knowledge learned in the past and upgrade the system. This design is part of the preliminary design of electrical substations and can basically meet the overall mission statement and these requirements. Key Word substation，electric power system， short computing，electricity equipment 220kV 一次降压变电所电气部分设计 - III - 目录 目录 . III 第一部分
