智能低压配电测控系统研究

发布时间：2018-03-19 00:21

本文选题：断路器　切入点：低压配电　出处：《沈阳工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着电网的快速发展,人们对低压配电设备也提出了更高的要求。由于智能电网的大面积兴起,传统低压配电设备已不能完全满足客户需要,智能低压配电系统的发展已成为必然趋势。远距离监控、及时的信息传递、快速的故障查找、高效安全已成为智能低压配电系统的发展方向。而断路器是电网中重要的保护电器和操作电器,其性能关系到用电者的人身和财产安全。随着社会生产力的提高,电网智能化的概念正在得到普及,对低压断路器智能控制器的研究得到越来越多的关注。首先,根据文献列举了传统的低压配电设备情况,通过分析指出了传统低压配电设备不足之处,阐述了智能断路器在配电保护系统中应用的优势,并在此基础上研究了智能控制器的计量原理和配电保护等基础技术。其次,设计出了基于CAN总线智能断路器控制系统的总体方案。设计实现了系统单片机主控模块、电源模块、漏电保护模块、拨码开关设定模块、CAN总线通信模块等硬件电路。详细阐述系统各模块电路的组成原理和实现方法,给出了整个电路系统的原理图,并对硬件系统抗干扰措施进行具体介绍。然后,阐述了软件的总体设计思想,结合硬件电路,设计实现系统的底层程序,详细叙述了系统自生电源模块、漏电处理模块、电流三段保护程序(过载长延时保护、短路短延时保护和短路瞬动保护)和CAN通信程序(接收数据和发送数据)的具体实现方法,给出了系统软件设计流程图,之后对软件抗干扰措施进行了介绍。最后,使用Microchip公司的MPLABXC8集成开发环境,对系统程序进行反复调试,基于Proteus对自生电源模块进行调试,之后给出了过载长延时、短路短延时、瞬时保护仿真试验结果,以及对后续通信功能进行了详细描述和实验结果的误差进行分析,验证了系统的功能。
[Abstract]:With the rapid development of power grid, people also put forward higher requirements for low-voltage distribution equipment. Because of the rise of smart grid, the traditional low-voltage distribution equipment can not fully meet the needs of customers. The development of intelligent low-voltage distribution system has become an inevitable trend. Remote monitoring, timely information transmission, rapid fault finding, High efficiency and safety have become the development direction of intelligent low voltage distribution system, and circuit breaker is an important protective and operating appliance in power grid. Its performance is related to the safety of person and property of power user. With the improvement of social productivity, The concept of intelligent power grid is getting more and more popular, and the research on intelligent controller of low-voltage circuit breaker has been paid more and more attention. Firstly, according to the literature, the traditional low-voltage distribution equipment is listed. This paper points out the shortcomings of traditional low-voltage distribution equipment, expounds the advantages of intelligent circuit breaker in distribution protection system, and studies the measuring principle of intelligent controller and the basic technology of distribution protection. The overall scheme of intelligent circuit breaker control system based on CAN bus is designed, and the main control module, power supply module and leakage protection module of the system are designed and realized. The hardware circuits such as can bus communication module and so on are described in detail. The principle and realization method of each module circuit of the system are described in detail, and the schematic diagram of the whole circuit system is given. The anti-interference measures of the hardware system are introduced in detail. Then, the overall design idea of the software is expounded, the bottom program of the system is designed and realized by combining the hardware circuit, and the self-generated power supply module and the leakage processing module are described in detail. The realization methods of three-stage current protection program (overload long delay protection, short circuit short delay protection and short circuit transient protection) and CAN communication program (receiving and transmitting data) are given, and the system software design flow chart is given. Finally, the software anti-interference measures are introduced. Finally, the system program is debugged repeatedly using the MPLABXC8 integrated development environment of Microchip Company, and the self-generated power module is debugged based on Proteus. After that, the long overload delay, short circuit and short delay are given. The simulation results of instantaneous protection and the error analysis of the subsequent communication function are described in detail, and the function of the system is verified.
【学位授予单位】：沈阳工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM561;TM64

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