智能剩余电流动作断路器的开发

发布时间：2018-04-20 21:44

本文选题：断路器 + 微处理器　；参考：《江西农业大学》2014年硕士论文

【摘要】：剩余电流动作断路器是一种用来保障电网安全运行，保护用电人员的安全的保护设备。主要应用在电网末端，检测供电线路的接地故障或者人身触电或者电器设备漏电等原因引起的漏电流的增加来断开电路，从而保障用电线路和人身及财产的安全。但随着社会的高速发展，科技的不断进步，人们对于电力保障的质量和稳定性提出了更高的要求，能实现不间断的供电，以及对故障进行精准的检测，避免不必要的断电。这就需要剩余电流动作断路器具有一定的智能化水平，能有效的检测出电网中发生的故障，准确的做出故障分析，并能根据故障的分析结果能有效的切断电路，防止故障进一步扩大，待故障解除后能实现自动重合闸，，这大大的提高了电力系统的运行效率。因此，开发一款高分断能力的智能剩余电流动作断路器是很有意义的。本项目是一项产品开发类项目，主要涉及产品的功能和参数的设定，以及软硬件设计。本项目在原有的产品基础上，采用微处理器为核心，设计具有显示，查询，数据存储，故障识别等一系列功能模块。并将此功能模块应用到实际的产品中，完成剩余电流动作断路器的开发。本项目具体实施包括以下四个方面的内容：研究国内外剩余电流断路器的功能指标，调查分析用户的实际需求，确定本项目产品的应具备的功能和技术指标。制定本项目的实施方案，并完成各个功能模块硬件电路的搭建和调试。软件程序设计。完成软件部分的开发，优化程序结构，实现程序的正常运行。功能调试。将分步实现各个功能模块组合一起进行调试，解决实际调试中出现的问题，为实现产品批量生产打下基础。文章简要介绍了智能剩余剩余电流动作断路器的相关标准及理论知识，重点分析了微处理器的选取、功能硬件电路的设计、保护算法的分析和实际设计中遇到的几个问题的解决，同时也介绍了最终产品所实现的功能及使用说明。通过实验表明本次设计基本符合预期目标，对今后的批量生产具有深远的意义。
[Abstract]:Residual current circuit breaker is a kind of protective equipment used to ensure the safe operation of power grid and to protect the safety of electric personnel. It is mainly used in the end of the power network to detect the grounding fault of power supply line or the increase of leakage current caused by personal shock or leakage of electrical equipment to disconnect the circuit so as to ensure the safety of power line and personal and property. But with the rapid development of society and the continuous progress of science and technology, people put forward higher requirements for the quality and stability of power supply, which can achieve uninterrupted power supply, accurate detection of faults and avoid unnecessary power outages. This requires that the residual current circuit breaker has a certain level of intelligence, can effectively detect the fault in the power network, accurately make fault analysis, and can effectively cut off the circuit according to the results of the fault analysis. To prevent the further expansion of the fault, the automatic reclosing can be realized after the fault is removed, which greatly improves the operation efficiency of the power system. Therefore, it is meaningful to develop an intelligent residual current circuit breaker with high breaking capacity. This project is a product development project, mainly involves the product function and the parameter setting, as well as the hardware and software design. This project is based on the original product and adopts microprocessor as the core. It has a series of function modules, such as display, query, data storage, fault identification and so on. The function module is applied to the actual product to complete the development of the residual current circuit breaker. The implementation of the project includes the following four aspects: The functional indexes of residual current circuit breakers at home and abroad are studied, and the actual requirements of users are investigated and analyzed, and the functions and technical indexes of the products of this project are determined. The implementation of this project, and the completion of each functional module hardware circuit construction and debugging. Software programming. Complete the development of the software, optimize the structure of the program, and realize the normal operation of the program. Function debugging. In order to solve the problems in actual debugging and lay the foundation for batch production, the function modules can be combined to debug the system step by step. This paper briefly introduces the relevant standards and theoretical knowledge of intelligent residual current circuit breaker, and analyzes the selection of microprocessor and the design of functional hardware circuit. The analysis of the protection algorithm and the solution of several problems encountered in the practical design are also given. At the same time, the functions and usage instructions of the final product are also introduced. The experiment shows that the design basically accords with the expected goal and has far-reaching significance for the future batch production.
【学位授予单位】：江西农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM561

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