摘要本课题要求设计变电所弱电选线控制电路。弱电化就是在控制、信号和测量设备中以低电压、弱电流来代替原来一般的强电式电压和电流。选线控制，就是通过切换一个控制开关有选择地操作若干个被控对象或对若干个被控对象进行分组操作。在二次回路部分分别设计了断路器弱电选线控制电路、弱电中央信号系统和断路器位置信号回路。在断路器弱电选线控制电路部分，详细介绍了自动复归、误选复归、对象选择和对象闭锁等功能。弱电中央信号系统包括事故信号回路、预告信号回路和闪光信号回路，并且具备亮屏和暗屏的操作功能。在弱电中央信号系统中对各回路的工作原理以及作用进行了详细的介绍。10860
关键词 弱电选线 中央信号系统 事故信号 预告信号 闪光信号 亮暗屏
毕业设计说明书（论文）外文摘要
Title The circuit Design For Select Control Of Weak Currents In Substations
Abstract
This subject is required to design the circuit design for select control of weak currents in substation .In control, signaling and measuring equipment, to weaken the current is to replace the generally-adopted high voltage and strong current by low voltage and weak current. By controlling a switch, select control manages to either selectively operate a number of objects or group and operate the objects. In the secondary circuit section , it includes weak line selection control circuit of the breaker , weak line central signal system , breaker position signal circuit . In the section of weak line selection control circuit of the breaker , it introduced the functions of automatic reset , mistakenly selected reversion , object selection and object locking in detail . In the weak line central signal system , it contains incident signal circuit , warning signal circuit and flash signal circuit , and it has the operating functions of bright screen and dark screen . In the section of weak line selection control circuit of the breaker , it introduced the functions of automatic reset , mistakenly selected reversion , object selection and object locking in detail . It describes working principle and effect of every circuit .
Keywords weak line selection central signal system incident signal warning signal flash signal bright or dark screen
目 录
1.前言 1
1.1 课题背景及意义 1
1.2 课题任务内容及要求 2
2.变电所弱电选线控制电路的构成 4
2.1 弱电选线控制电路 4
2.2 中央信号系统 4
3.断路器弱电选线控制电路设计 6
3.1 断路器控制回路 6
3.2 断路器弱电选线电路要求 9
3.3 断路器弱电选线原理及电路图 10
4.断路器位置信号回路 12
4.1 弱电一对一控制带模拟灯位置信号回路 12
4.2 弱电选线控制位置信号回路 12
5.弱电中央信号系统设计 14
5.1 概述 14
5.2 基本弱电信号电路 17
5.3 事故信号回路原理及电路图 18
5.4 预告信号回路原理及电路图 20
5.5 闪光信号回路原理及电路图 21
5.6 中央信号系统亮屏和暗屏操作功能 21
6.泓格可编程模块简介 23
6.1 7017模块 23
6.2 7065D模块 24
6.3 7520模块 25
6.4 I-7000系列模块命令集介绍 27
7.用模块实现断路器弱电选线控制和中央信号系统 30 变电所弱电选线控制电路设计+文献综述:http://www.751com.cn/zidonghua/lunwen_10040.html