摘 要
摘 要:本課題主要研究基于數字采樣法的工頻電參量系統的設計,主要功能包括電流、電壓、頻率、相位、功率因數、有功功率、電能、無功功率等的測量。
隨著國民經濟的快速發展,對電力需求越來越大,電作為一種重要的商品,也越來越受到人們的重視。本系統可作為電力部門收費和用戶付費的依據,應用范圍非常廣泛。
本課題文主要研究了用Σ—△A/D轉換器和 DSP處理器對工頻三相電壓、電流進行數字采樣,再用數字低通濾波器實現對三相電參數進行測量的測量系統。系統采用并行數據通信總線實現與計算機系統通信的功能,并對通信的輸出數據類型進行了定義。
關鍵詞:Σ—△A/D;低通濾波器;工頻電參數Study of AC Electric Parameter Measuring System Based on Digital Sampling Principle
Abstract
Abstract:This thesis studies a measuring system of three case electricity parameter based digital sampling method. Its function includes the measurement of current,voltage, frequency, phrase, power, factor, active power and energy, reactive power and energy.
With the rapid development of economy, the requirement of electric power
is getting more and more, and electricity plays a more important pole as a comodity. This system will be extended to use for paying standard.
This measuring system of three phrase electrical parameter is made of Signa-Delta A/D converter of six channels and DSP.It is provided with function of others computer system's communication through parallel bus,and the types of output dataclass are defined.
Keywords:Signa-Delta A/D; Digital Lowpass Filter; AC Electric Parameter