论文总字数:15405字
摘 要
改革开放以来,已经经过了四十多年的发展,经济水平和科技水平得到了巨大的发展与进步,人民的生活水平得到了巨大提升,电力系统安全行业已经发展进入了一个新阶段。我国从一个电力行业贫乏的落后国家,发展成了一个引领世界电力行业的先驱者。现代社会人们对电力供应的需求变得更加强烈,他们开始追求更高的可靠性和安全性,现在的电力系统安全的地位比过去的任何时候都要重要。电力系统二次线路设计也保障了电力系统的运行经济、供电可靠和生产安全。现在,电力系统也在朝着数字化和智能化的方向发展中。
这次的毕业设计,我选用的设备都是已经在现实生活在投入了广泛应用的设备。比如许继电力公司的保护柜,其型号为GXH811A-112Q型。还有中德保护公司生产的测控柜,其型号为6MD632型。这款测控柜是由国家电力研究院联合生产的。断路器型号:GL312,隔离与接地刀闸:CS600与CS100.
根据设计需要,本论文内容包括以下几个部分:绪论部分阐述了设计可能遇到的困难和预计的解决措施;其次为对线路的一次侧设备的介绍和使用情况;第三部分是对二次侧设备在线路上的使用情况 和说明介绍;二次回路的设计为第四部分的主要内容;最后对线路进行了整定计算。
关键词 :110kV线路保护;整定计算;接线设计
GXH811 Protection setting and wiring
Abstract
Since the reform and opening up, it has undergone more than 40 years of development, the economic level and the level of science and technology have been greatly developed and progressed, the people"s living standards have been greatly improved, and the power system security industry has entered a new stage. China has developed from a poor and backward country in the power industry to a pioneer in the world"s power industry. In modern society, the demand for electricity supply has become stronger. They have begun to pursue higher reliability and safety. The current status of power system security is more important than ever. The secondary circuit design of the power system also ensures the economical operation of the power system, reliable power supply and production safety. Now, the power system is also developing in the direction of digitalization and intelligence.
This graduation project, the equipment I chose, is a device that has been widely used in real life. For example, the protective cabinet of Xuji Power Company is model GXH811A-112Q. There is also a measurement and control cabinet produced by Sino-German Protection Company, the model number is 6MD632. This measuring and controlling cabinet is jointly produced by the National Electric Power Research Institute. Circuit breaker type: GL312, isolation and grounding knife: CS600 and CS100.
According to the design needs, the content of this thesis includes the following parts: the introduction part explains the difficulties and expected solutions for the design; the second is the introduction and use of the primary side equipment of the line; the third part is the second The use and description of the side equipment on the line; the design of the secondary circuit is the main content of the fourth part; finally, the line is set and calculated.
Keywords:110 kV line protection;Wiring design;Setting calculation
目 录
摘 要 I
Abstract II
第二章 110kV输电线路的一次设备配置 3
2.1 110kV输电线路主接线 3
2.2 断路器: 4
2.2.1 断路器的分类 4
2.2.2 断路器控制回路的要求 4
2.2.3 断路器的电气防跳 5
2.2.4 GL312型断路器合闸回路和分闸回路 5
2.2.5 闭锁自检、报警回路 6
2.3 隔离开关的控制回路 7
2.3.1 隔离开关的主要作用 7
2.3.2 隔离刀闸的端子接线 7
2.4.2 电压互感器: 8
第三章 110kV输电线路的二次设备配置 9
3.1 110kV输电线路保护的配置 9
3.1.1 距离保护 9
3.1.2零序过流保护 9
3.2 110kV线路保护柜(GXH811A-112Q) 10
3.2.1 GXH811A-112Q的性能简介 10
3.2.3 直流电源输入回路: 11
3.2.4 模拟量输入回路: 11
3.2.5 开关量输入回路: 12
3.2.6 操作回路: 12
3.2.7 跳闸回路: 13
3.2.8 合闸回路: 13
3.3测控柜(中德6MD632型测控柜) 14
3.3.1测控柜的简介 14
3.3.2遥测 14
3.3.3遥控 15
3.3.4遥信 15
第四章 二次回路的设计 16
4.1二次回路 16
4.1.1 二次回路基本概念 16
4.1.2二次回路设计 16
4.2交流电压、电流回路 17
4.3一次系统示意图 17
4.4断路器控制回路图 17
4.5刀闸防误回路 18
4.5.1隔离开关、接地刀闸的防误 18
4.5.2隔离刀闸和接地刀闸控制回路示意图 18
4.6信号回路 19
第五章 110kV线路保护整定计算 20
5.1整定项目 20
5.1.1系统接线简图如图1所示。 20
5.1.2参数选择与任务 20
5.2 距离保护整定计算 21
5.2.1 有关元件阻抗的计算 21
5.2.2 距离I段的整定 21
5.2.3 距离Ⅱ段的整定 21
5.2.4 距离Ⅲ段的整定 21
5.3 零序保护整定计算 22
5.3.1 零序电流I段整定 22
5.3.2 零序电流Ⅱ段整定 23
5.3.3 零序电流Ⅲ段整定 23
5.3.4 零序过流保护的保护范围及灵敏度校验 23
第六章 结论与展望 25
致 谢 26
参考文献 27
附录 28
剩余内容已隐藏,请支付后下载全文,论文总字数:15405字
该课题毕业论文、开题报告、外文翻译、程序设计、图纸设计等资料可联系客服协助查找;