基于DSP的馈线终端装置FTU的设计与实现

配电自动化是提高供电可靠性和供电质量的有效手段,馈线自动化是配电自动化系统的重要内容之一,而馈线终端装置（FTU）又是馈线自动化的关键智能设备,是其基础控制单元。随着近年来检测及嵌入式技术的飞速发展,对FTU的系统可靠性和运算精度提出了更高要求。在借鉴当前国内各厂商的FTU设计方案的基础上,研制了以DSP为硬件核心的刚,使用交流采样原理实现对电网电压、电流的测量,根据交流采样值计算得出电流、电压有效值、有功功率和功率因数等电参数,并具有多种录波功能。软件基于μC／OS—II实时操作系统,提高了系统模块化和可扩展性。

Design and Realization of Feeder Terminal Unit Based on DSP

Distribution Automation is an effective means to improve the reliability and energy quality of power supply. Feeder Automation is one of the important contents in the distribution automation, and Feeder Temfinal Unit（FTU） is key intelligent equipment and basic control unit of the feeder automation. In recent years, with the rapid development of detection and embedded technology, higher reqirement of reliability and accuracy of FTU is needed. In this paper, based on the design of many manufacturers, the FTU using DSP as the hardware core is designed. It uses AC sampling theory to measure voltage and current of electrical network, uses AC sampling value to calculate virtual value of voltage and current, power, power factor and other electrical parameters, and has several wave record functions. Based on μC/OS - II, the software enhances modularization and expansibility of the system.