万能式断路器智能控制器测试系统设计

发布时间：2018-06-17 19:12

本文选题：万能式断路器智能控制器 + 数模转换器　；参考：《南京邮电大学》2014年硕士论文

【摘要】：随着社会的发展,人们在生活、工作等方方面面都离不开电力。万能式断路器作为低压配电系统的重要元件,其工作的可靠性直接影响着电网运行的稳定性。作为万能式断路器核心的智能控制器是实现断路器各种保护的关键部件,其质量对万能式断路器的安全、可靠运行起着举足轻重的作用。目前,国内万能式断路器生产企业,在智能控制器生产过程中一般主要依靠人工检测,并且检测设备较国外厂商相对落后,效率低下,致使成品质量稳定性差,故障率高。本文介绍了万能式断路器智能控制器的工作原理、脱扣特性、检验的技术指标和方法。通过采用32位高性能ARM单片机STM32F103、12位高精度数模转换器和嵌入式系统,设计并实现了万能式断路器智能控制器的测试系统。该系统通过单片机执行程序控制高精度数模转换器输出模拟电流互感器输出的正弦电流信号,输入到智能控制器电流采集通道的二次回路,同时实时采集智能控制器的脱扣状态信号。通过在不同大小模拟电流条件下,自动检测智能控制器实际脱扣时间的脱扣特性来判断控制器是否满足产品的性能指标要求。论文详细描述了测试系统的软、硬件设计及自动测试流程等内容。目前该测试系统已在万能式断路器智能控制器生产流水线上试运行,提高了智能控制器检测的可靠性和效率,取得了良好的使用效果。
[Abstract]:With the development of society, people in life, work and other aspects can not do without electricity. As an important component of low voltage distribution system, the reliability of universal circuit breaker directly affects the stability of power system. The intelligent controller, as the core of the circuit breaker, is the key component to realize the protection of the circuit breaker. Its quality plays an important role in the safe and reliable operation of the circuit breaker. At present, the domestic production enterprises of universal circuit breaker mainly rely on manual detection in the production process of intelligent controller, and the detection equipment is relatively backward and inefficient compared with foreign manufacturers, resulting in poor quality stability of finished products and high failure rate. This paper introduces the working principle, tripping characteristic, technical index and method of checking the intelligent controller of universal circuit breaker. The test system of intelligent controller for universal circuit breaker is designed and implemented by using 32-bit high performance arm single-chip computer STM32F103N 12 bits high precision digital-analog converter and embedded system. The system controls the output sinusoidal current signal of analog current transformer with high precision digital-to-analog converter by single chip microcomputer, and inputs it into the secondary loop of current acquisition channel of intelligent controller. At the same time, real-time acquisition of the intelligent controller tripping state signal. By automatically detecting the tripping characteristics of the actual tripping time of the intelligent controller under different simulated currents of different sizes, it is determined whether the controller meets the performance requirements of the product. This paper describes the software, hardware design and automatic test flow of the test system in detail. At present, the test system has been tested on the production line of the intelligent controller of the circuit breaker, which improves the reliability and efficiency of the intelligent controller detection, and achieves a good application effect.
【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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