电力参数监控仪测控电路研发.doc

电力参数监控仪测控电路研发 摘要：本系统的硬件设计，采用模块化的设计思想，并尽可能的采用高性能集成电路，简化了电路设计并提高了可靠性。在软件设计中采用了自顶向下的设计思想，所有程序采用分层次模块化设计，提高了软件的可移植性。本系统运行稳定可靠，相信能很好的运用到实际生产中。关键词：电力参数监控数字信号处理快速傅立叶变换 Abstract：Science and technology are advancing rapidly today, and the development of productive forces, wireless, long-range, precision, small, Intelligent technology guides the direction of development. In distribution of power, and other production practice, The demand for real-time monitoring and high accurate of power parameters is getting higher and higher. Wireless Remote to development. There is a need to do research on this matter. The results of the study can solve the problems of production, improve production efficiency and reduce labor costs. production automation. This thesis mairly introduces the parameters of power measured part of the strument based on DSP2407, including data collection, Fast Fourier Transform, liquid crystal display and data transmission. The hardware of system adopts the idea of modular design, it adopts the high-parformance integrated circuits as much as possible ,and jredigests circuits design and improves reliability .The software design ,using in the top-down design ideas, all the procedures used hierarchical modular design, improving the portability of the software. The system is stable and reliable, I believe,it can be good used in the production. Key word: Power Parameters Monitoring；digital signal processing；Fast Fourier Transform （FFT） 1 绪论 电力参数实时、准确的测量对于保证电网安全，经济地运行和实现电网调度的自动化具有非常重要的意义。电网中非线性设备的日益增多，导致多种电力运行指标的恶化。其中最主要的问题就是谐波污染和无功损耗的增加。谐波污染会导致电网损耗的增加，降低用电设备的效率和性能，引起设备的过载，威胁用电安全。要想治理谐波污染，就必须对相关的电力参数进行实时测量。 基于上述原因，设计一种运行稳定可靠，精度高，远程控制的电力参数监控仪就成为业内有待解决的问题。目前市场上同类产品也逐步增多，但都存在着某些不足的地方，比如精度不高，运算速率慢，达不到远程无线遥控的目的等。设计一款功能强大，智能化水平高的电力参数监控仪就更是值得研究讨论。 电网系统电能质量监控的实时性要求较高，不仅含有频率、电压、电流、有功、无功、谐波分量等，而且有些采集的特征量频率变化快而且复杂，如暂态突变量、高频的故障行波等，普通的采集处理方法对多路进行采样计算显得困难甚至难以实现，为了克服以上不足，满足现代电力系统的要求，将先进的数字信号处理技术应用到电力系统中充分发挥其快速强大的运算及并行运行处理能力，满足电力系统监控实时性和处理算法的复杂性等要求，并为不断发展的新理论和新算法应用于电力系统的实践奠定技术基