【作者】 唐亮；

【导师】 赵春宇；

【作者基本信息】 上海交通大学 ， 精密仪器及机械， 2008， 硕士

【摘要】 当今社会,存在大量非线性负荷(如电弧炉等),虽然他们对生产力的提高给与了很大的帮助,但它们也在电力系统中导致了严重的电能质量恶化。另外,得益于微电子技术的发展,各种自动装置广泛应用,而这些装置对于电能质量下降极为敏感,因此在生产实践中出现了许多严重的事故,造成了巨大的损失。当今,如何提高电能质量、确保用电设备安全稳定的运行,已成了国内外广泛关注的焦点之一。本文设计了一种基于数字信号处理器的电能质量分析装置,利用DSP芯片强大的计算功能进行电能质量在线监测,实时显示测量数据,保存超标数据,为电网电能质量的测评和电能质量的改善提供了准确的依据。本装置作为电能质量在线监测系统的现场监测终端,主要安装在中、低压配电端、大型电力用户输入端等现场。论文首先介绍了电能质量的概念,电能质量问题的提出,电能质量的测量方法,电能质量在线监测的要求和实现方法,以及DSP处理器在电能质量测量中的应用和发展;然后详细介绍了本监测系统的数据采样和模数转换设计、DSP电路设计和一些特殊功能模块,比如瞬变监测模块,锁相环模块。本装置利用TI公司的TMS320C6713作为系统的中央处理器,实现了对多项电能质量的实时测量。为满足实时性的要求,在硬件上采用CPLD来完成系统的逻辑控制。实践表明,本电能质量综合测试装置具有很高的测量速度和测量精度,功能齐全,具有可扩展性,在性能和功能上优于同类产品,已经可以在配电网、工业园区等地方进行应用。更多还原

【Abstract】 Nowadays, lots of electric inverters have got widely application. On the one hand, they have greatly enhanced the productivity undoubtedly. On the other hand, they have done great harm to power quality of the applied electric system. How to improve power quality and insure this sensitive electronic equipment’s reliable operation becomes a stringent and important task, which has attracted great attentions of specialist from home and abroad.In this article, we introduce a set of online power quality monitor who is based on DSP (Digital Signal Processor). The monitor makes full use of DSP chip’s strong operation capability. It can monitor power quality online, display real-time measure data and save superscalar data, which can provide accurate data to power quality evaluation and improvement. This device can be applied to medium and low voltage distribution output side or the input side of large consumer.Structure of paper: concept of power quality; bringing forward questions of power quality; measurements of power quality; requirements and realization of power quality’s measurement; the appliance and development of DSP processor in power quality measurement. Then comes the detailed description of this monitor; A/D converting; design of DSP circuit; system commissioning and debugging.The monitor introduces chip TMS320C6713 of TI Company as central processor. It can monitor different parameters of power quality. In order to satisfy the need of real-time requirement, CPLD is entitled for system logical control.This monitor has powerful functions,its good performance such as accurate measurement, high measuring speed and good stability has got testified in many field application cases. The application field includes distribution grid and different industrial parks. Furthermore, its extensibility, function and performance is more competent than any other product of same category.更多还原