基于DSP的同步交流采样技术  

Synchronous AC sampling technologies based on DSP

作　　者：周志宇[1] 李裕能[1] 郭松梅[2] 张霖[1] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]湖北工业大学机电系,湖北武汉430079

出　　处：《电力自动化设备》2006年第5期57-60,共4页Electric Power Automation Equipment

摘　　要：简要介绍了电网信号交流采样的分类,重点分析了采用软件实现同步交流采样的工作原理和误差来源,并结合DSP技术给出一种基于TMS320F24X芯片的软件同步采样处理系统的实现方案,给出了软件设计流程。同时讨论了减少误差及在电网有畸变情况下保持同步的方法。在测量电网信号的有效值、功率、高次谐波以及故障录波等方面使用该技术,可保证检测精度时同时减少硬件的复杂度。The classification of synchronous AC sampling technologies for power network signals is briefly introduced,and the emphasis is put on the analysis of the principle and error sources of SW synchronous sampling. The implementation of a SW synchronous sampling and data processing system based on DSP TMS320F 24X is presented,and the corresponding software design is put forward. The way to reduce error and to keep synchronous during power wave distortion is also discussed. Applying this technology in measuring the power network signals of virtual value,power and harmonics and logging fault waves can lower the complexity of hardware while the measuring accuracy ensured.

关 键 词：同步采样 电网信号 DSP 

分 类 号：TM76[电气工程—电力系统及自动化] TP274[自动化与计算机技术—检测技术与自动化装置]