LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (3): 56-62.doi: 10.16628/j.cnki.2095-8188.2022.03.009

• Electrical Design & Discussion • Previous Articles     Next Articles

Design of Three-Phase Electric Quantity Sampling Device Based on dsPIC30F Series Chip and Quasi-Synchronous Sampling Algorithm

ZHAO Yu, YANG Xi, CHEN Hao, WANG Ran, WANG Qiuyin, YANG Tingna, YAN Shuncai   

  1. Yunnan Energy Research Institute Co.,Ltd., Kunming 650500, China
  • Received:2021-11-28 Online:2022-03-30 Published:2022-04-28

Abstract:

A new three-phase electric quantity acquisition device is designed,which can realize the high-precision sampling of electric quantity parameters such as voltage,current and harmonic.The CPU of device adopts dsPIC30F6014A series single chip microcomputer with high-performance DSP operation core.The AC electrical parameters sampling and measurement method based on quasi-synchronous sampling principle is used.In the process of data sampling,it is not necessary to keep strict synchronized with the power grid frequency.Through the verification of the electric quantity acquisition device,the purpose and the effect of simple structure and reliable operation are realized on the premise of ensuring the sampling accuracy of the device.

Key words: electric quantity sampling device, quasi-synchronous sampling, dsPIC30F6014A, electric parameter

CLC Number: