摘要
近年来随着电网结构的不断变化,注入信号法测量电容电流得到了广泛的应用和重视,而在实际应用该方法的过程中有2个瓶颈问题还没有得到很好的解决,即信号源和50 Hz陷波的问题。文章针对这2个问题,提出了一种采用数字信号处理器TMS320F2812和数字频率直接合成技术相结合实现电容电流测量的新方法,详细介绍了信号源的硬件和软件设计,以及50 Hz陷波器的设计,并给出了该方法的整体实现。实验证明,该方法在电容电流的测量中具有准确、方便、安全等特点。
Recently, with the changes of structure of power grid, the method of injection signal has been used widely in the measurement of capacitance current. There are two bottleneck problems were not resolved in process of practical application of the method, namely the problems of signal source and 50 Hz trapped wave. Aiming at the two problems, the paper proposed a new method of using digital signal processor TMS320F2812 and DDS technology to realize measurement of capacitance current. It introduced design of hardware and software of signal source and design of 50 Hz wavetrap in details, and gave whole implementation of the method. The experiment proved that the method has characteristics of accuracy, conveniency and safety in measurement of capacitance current.
出处
《工矿自动化》
北大核心
2008年第6期40-43,共4页
Journal Of Mine Automation
作者简介
贺洪江（1964-），男，硕士，教授，河北工程大学信息与电气工程学院院长，1995年毕业于上海交通大学，现主要从事电力系统保护方面的研究工作。Tel：13730088892，E-mail：hehj@hebeu．edu．cn
