某机械厂变电所气部分设计 副本.doc

PAGE 1论文题目：某机械厂变电所电气部分设计专 业：电气工程及其自动化学 生：张 颖 （签名）____________指导老师：赵永秀 （签名）____________摘 要变电站是电力系统的重要组成部分，是联系电厂和负荷用户的中间环节，是电网中线路的枢纽。如果工厂电能供应突然中断，就会对工业生产造成严重的不良后果。甚至可能发生重大的设备损坏或人员伤亡事故。因此，变电所保证工厂正常有序地供电，具有十分重要的意义。本文以电力系统相关理论知识为基础，以工厂供电为指导，根据所给某冶金机械制造厂的原始资料对其变电站的电气部分进行设计。本文共分为九章，第一章为绪论，主要讲述了论文的背景、意义、研究方法和变电站设计的主要内容；第二章主要根据所给原始资料对本厂负荷进行了详细的计算，从而总降压变电所的位置；第三章，根据负荷的重要性和负荷的大小对变压器进行选择，在高压侧对全厂进行无功补偿；第四章为主接线的选择；第五章为短路电流的计算；第六章对电气设备进行选择和校验。第七章对继电保护的配置、整定及校验。第八章根据本厂的自然条件与后期的安装设计，对全厂的负荷进行防雷及接地保护。在第九章中，得出了整篇论文的结论。在论文的最后附上设计的图纸。关键词：变电站，负荷计算，短路计算，继电保护Subject: The Design on the Substation’s Electrical Part of a Machinery Factory Specialty: Electrical engineering and automationName: Zhang Ying (Signature) ＿＿＿Instructor: Zhao Yongxiu (Signature) ＿＿＿ABSTRACTSubstation is an important part of power system, which is also the middle part of the power plant and the hub of transmission lines. If the power suddenly interrupted, it will cause serious adverse consequences for industrial production and may even undergo major equipment damage or personnel casualties. Therefore, the substation to ensure supply electric for power plant normal and orderly has very important significance.This paper is divided into eight chapters. The first chapter is an introduction, which focuses on a papers background, significance, research methods and design of the main contents of the substation. The second chapter describes the method of load calculation .when we get the detail results, we can determine the loud center. The third chapter is about the choice of transformers and the compensation of reactive power. Chapter four is about the option of the main wiring. The fifth chapter is short-circuit current calculation; Chapter Six is the selection and check of electrical equipment. Chapter Seven is about the configuration and calculation of the relay protection. Chapter eight is about substation lightning protect