智能型塑壳断路器智能脱扣器的设计

发布时间：2018-03-10 13:49

本文选题：智能型塑壳断路器智能脱扣器　切入点：微控制器　出处：《南京邮电大学》2014年硕士论文　论文类型：学位论文

【摘要】：塑壳断路器应用在低压配电系统中,是用来处理由于电网波动导致线路出现严重的过载、短路、过电压、欠电压、过电流、漏电等故障的一种电气设备,可切断电路,隔离故障,起到保护配电网络、电气设备的作用。智能脱扣器是智能塑壳断路器的核心,不仅具有普通脱扣器的各种保护功能,还具有实时参数显示、故障记忆和查询、自诊断、通信等功能。本课题是以NXP公司的全球首款采用ARM#174;Cortex?-M4和Cortex-M0双核架构的非对称数字信号控制器LPC4300作为微控制器;以开放源代码的嵌入实时操作系统μC/OS-III作为脱扣器操作系统。通过硬件电路采集相关的电网信息;微控制器、A/D转换器进行模数转换;应用基于2FFT快速傅里叶变换处理采样数据;液晶实时显示电网电压数值的设计可实时了解电网情况,在电网产生故障时脱扣器快速脱扣,保护整个电网和电气设备。本设计采用采用双电流互感器,测量级电流互感器和能量、保护互感器分开,按键操作、液晶显示方式,除了实时测量电流,实现过载保护等保护功能外,还可测量电压、功率,进行谐波分析,实现电能管理。智能脱扣器由电源模块、测量模块、A/D转换模块、MCU模块、人机接口模块、通信模块、I/O模块等组成。本智能脱扣器对测量和保护功能从硬件到软件尽量独立,从互感器的两路信号输入,信号调理电路也各自独立,MCU两个内核分别处理测量和保护功能。
[Abstract]:The plastic case circuit breaker is used in low voltage distribution system to deal with serious overload, short circuit, overvoltage, undervoltage, overcurrent, leakage and other faults caused by the fluctuation of the power network, which can cut off the circuit. The intelligent release is the core of the intelligent plastic case circuit breaker. It not only has the various protection functions of the ordinary release, but also has the real-time parameter display, the fault memory and the inquiry. Self-Diagnostic, Communication and other functions. This project is based on the first ARM #174Cortex-based NXP company in the world. The asymmetric digital signal controller (LPC4300) based on M4 and Cortex-M0 is used as microcontroller, the embedded real-time operating system 渭 C / OS-III of open source is used as the operating system of release, and the relevant power grid information is collected by hardware circuit. Microcontroller A / D converter for A / D conversion; based on 2FFT FFT fast Fourier transform is used to process sampling data; LCD real-time display of power grid voltage value design can real-time understand the power network situation, in the event of power grid failure, the release fast release, Protection of the whole power network and electrical equipment. This design adopts dual current transformer, measuring current transformer and energy, protection transformer separate, keystroke operation, LCD display mode, in addition to real-time measurement of current, Besides the protection functions such as overload protection, voltage, power and harmonic analysis can be measured, and power management can be realized. The intelligent release consists of power supply module, measurement module, A / D conversion module, MCU module, man-machine interface module, etc. The intelligent release is as independent as possible for the measurement and protection functions from hardware to software, from the two signals input of the transformer and the signal conditioning circuit to the measurement and protection functions of the MCU core.
【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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