带剩余电流自适应功能的智能型塑壳断路器控制技术
发布时间：2018-11-08 13:22
【摘要】：电的发明作为现代文明的一个重要标志,是现代经济的命脉。电能是一种便于传输、使用方便、最为清洁的能源,已经占据了社会中的方方面面,家庭生活、工业、农业、商业、军事等等各个领域,使之无法替代。随着各行各业对电能需求的日益增加,电气安全显的越来越重要[1]。在日常生活中因电气设备使用不当或线路漏电造成的电气事故时有发生,低压配电系统线路的漏电、用电设备的漏电、过载及短路等都会导致火灾。每年因触电死亡的有数8000人之多,漏电引起的火灾造成的经济损失高达数十亿。所以在许多场合要安装漏电智能断路器,漏电智能保护设备对漏电、触电及过载等用电故障进行保护,对防止漏电火灾和人身触电具有重要作用。本论文结合公司的CM2L的基础并分析国内漏电保护技术的基础上,开展了‘带剩余电流自适应功能的智能型塑壳断路器控制技术’的设计和研究。本设计的硬件包含了六大部分,电源电路部分、外部信号检测电路部分(包括剩余电流的采样、温湿度的采样、四相电流的采样)、键盘整定电路部分、显示电路部分、通信电路部分、MCU主控部分。在软件的设计中,考虑到剩余电流的突变和缓变的概念,根据温湿度的改变和剩余电流缓变的情况,改变漏电动作阈值,同时满足瞬动、过载长延时和过载短延时的三段保护功能,能够与上位机通信并通过液晶模块显示漏电、各相电流值。最后通过整体考虑合理分配MCU的整体资源,通过编写程序,完成课题设计。本课题主要是对新一代的剩余电流智能型塑壳断路器的控制技术做进一步的探索和研究。
[Abstract]:As an important symbol of modern civilization, the invention of electricity is the lifeblood of modern economy. Electric energy is a kind of easy to transmit, easy to use, the cleanest energy, has occupied all aspects of society, family life, industry, agriculture, commerce, military and other fields, make it irreplaceable. With the increasing demand for electric energy in various industries, electrical safety is becoming more and more important. In daily life, electrical accidents caused by improper use of electrical equipment or leakage of line electricity, leakage of low voltage distribution system, leakage of electric equipment, overload and short circuit will all lead to fire. Every year, as many as 8000 people are killed by electric shock and billions of dollars are lost in fires caused by leakage of electricity. So it is necessary to install leakage intelligent circuit breaker on many occasions. Intelligent leakage protection equipment protects leakage electric shock and overload and so on which plays an important role in preventing leakage fire and personal electric shock. In this paper, based on the foundation of CM2L and the analysis of domestic leakage protection technology, the design and research of intelligent plastic case circuit breaker control technology with residual current adaptive function are carried out. The hardware of this design includes six parts: power supply circuit, external signal detection circuit (including sampling of residual current, sampling of temperature and humidity, sampling of four-phase current), keyboard setting circuit, display circuit, etc. Communication circuit part, MCU main control part. In the design of software, considering the concept of sudden change and slow change of residual current, according to the change of temperature and humidity and the condition of slow change of residual current, the threshold of leakage action is changed and the transient motion is satisfied. The three-stage protection function of long overload delay and short overload delay can communicate with the host computer and display the leakage current and the current value of each phase through the liquid crystal module. Finally, through the overall consideration of rational allocation of the overall MCU resources, through the preparation of a program to complete the project design. In this paper, the control technology of the new generation of residual current intelligent plastic case circuit breaker is studied.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM561
本文编号：2318624
[Abstract]:As an important symbol of modern civilization, the invention of electricity is the lifeblood of modern economy. Electric energy is a kind of easy to transmit, easy to use, the cleanest energy, has occupied all aspects of society, family life, industry, agriculture, commerce, military and other fields, make it irreplaceable. With the increasing demand for electric energy in various industries, electrical safety is becoming more and more important. In daily life, electrical accidents caused by improper use of electrical equipment or leakage of line electricity, leakage of low voltage distribution system, leakage of electric equipment, overload and short circuit will all lead to fire. Every year, as many as 8000 people are killed by electric shock and billions of dollars are lost in fires caused by leakage of electricity. So it is necessary to install leakage intelligent circuit breaker on many occasions. Intelligent leakage protection equipment protects leakage electric shock and overload and so on which plays an important role in preventing leakage fire and personal electric shock. In this paper, based on the foundation of CM2L and the analysis of domestic leakage protection technology, the design and research of intelligent plastic case circuit breaker control technology with residual current adaptive function are carried out. The hardware of this design includes six parts: power supply circuit, external signal detection circuit (including sampling of residual current, sampling of temperature and humidity, sampling of four-phase current), keyboard setting circuit, display circuit, etc. Communication circuit part, MCU main control part. In the design of software, considering the concept of sudden change and slow change of residual current, according to the change of temperature and humidity and the condition of slow change of residual current, the threshold of leakage action is changed and the transient motion is satisfied. The three-stage protection function of long overload delay and short overload delay can communicate with the host computer and display the leakage current and the current value of each phase through the liquid crystal module. Finally, through the overall consideration of rational allocation of the overall MCU resources, through the preparation of a program to complete the project design. In this paper, the control technology of the new generation of residual current intelligent plastic case circuit breaker is studied.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM561
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