基于DSP和MCU的电能质量在线监测装置的设计

Design of Power Quality On-line Monitoring Instrument Based on DSP and MCU

近年来,电能质量出现了日益恶化的趋势,因此有必要对其进行在线监测,以便采取措施改善、提高供电质量。鉴于此,本文设计了基于DSP和MCU的电能质量在线监测装置,充分发挥了DSP强大的信号处理和MCU完善的管理能力,实现了电网数据的采集、处理、存储、显示以及与上位机通信等功能。文中主要介绍了装置的基本构成、硬件和软件设计、电能质量分析算法以及所采取的抗干扰措施。实际运行表明,该监测装置具有稳定可靠、精度高、实时性好等优点,很好的满足了电能质量在线监测的实际需求。

In recent years, there is a tendency of power quality increasing dete rioration. Therefore, in order to take measures to improve the quality of power supply, it is necessary to put up on-line monitoring. In view of this, a power quality on-line monitoring instrument based on DSP and MCU is designed. The abi lity of DSP powerful signal processing and MCU perfect management is developed a bundantly, and the functions of the data acquisition, processing and storage, th e data display and communication with the host computer are realized. This paper introduces the basic structure of the instrument and techniques for achieving i nstrument＇s hardware, software, power quality analysis algorithm and anti-inter ference measures. Practical operation indicates that the instrument has the adva ntages of stable and reliable, high measurement accuracy and good real-time per formance. It can satisfy the actual requirements of power quality on-line monit oring.