1、论文题目:110kV变电站的设计 专 业:电气工程及其自动化 指导老师: 签名: 姓 名: 签名: 摘 要 电力生产发、送、变、用的同时性,决定了电力生产的每一个过程都很重要。变电 站作为电力生产的关键环节,起着电压变换和电能分配的枢纽作用。电能在变电站汇集 与分散,能够有利于潮流的合理分布及电能质量的改善,能够提高供电的可靠性。 本毕业设计拟在某区域设计一所 110kV 变电站。其主要设计内容包括:据现有负荷 状况进行主变压器的选择、主接线方式的选择、短路电流计算、设备的选择与校验、继 电保护的配置与整定、变电站综合自动化的简要设计等。在设备选型中,着重应用新技 术和新产品,充分保证电力系统
2、安全稳定运行,实现变电站的供电可靠性。 关键词:变电站,主接线,设备选型,短路计算,继电保护 Subject: 110kV substation design Specialty: Electrical engineering and automation Instructor: Signature: Name: Signature: ABSTRACT The simultaneity of electricity production development, delivery, transformation and use decided each process of the elect
3、ricity production is important. As a key link in the production of electricity, substation plays a pivotal role in voltage conversion and power distribution. Pooled and distributed electricity in the substation will be conducive to the rational distribution of trend power and power quality improveme
4、nt, to improve the reliability of power supply. This graduation design is proposed to design a 110kv substation in this area which mainly includes the choice of the main transformer on the basis of the existing load conditions, the choice of the main connection mode, short circuit current calculatio
5、n, selection and calibration of the equipment, the relay protection configuration and setting, a brief design of substation integrated automation and etc. In equipment selection, focusing on the application of new technologies and new products, and fully guarantee the safe and stable operation of th
6、e power system to achieve substation reliability. KEY WORDS: substation., lord wiring, equipment selection, short circuit calculation, relay protection 目 录 第 1 章 绪论 1 1.1 110KV 变电站设计的现状与发展趋势 1 1.2 110KV 变电站设计的目的及意义 .1 1.3 本论文的主要内容1 1.4 本章小结1 第 2 章 负荷计算及主变压器选型 2 2.1 负荷计算2 2.2 主变压器的选择3 2.2.1 台数的选择 3 2.2.2 容量的选择 3 2.2.3 校验变压器的负荷 3 2.2.4 校验事故情况下过载能力 4 2.2.5 接地方式 4 2.2.6 容量比的选择 4 2.2.7 型号的确定 4 2.3 本章小结5 第 3 章 主接线的设计 6 3.1 主接线的选择