|Table of Contents|

Method of active power measurement under condition of distortion signal(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2016年06
Page:
87-93
Research Field:
Publishing date:

Info

Title:
Method of active power measurement under condition of distortion signal
Author(s):
ZHANG Xiao-bing LI Yun-hui CAO Wei
 ( College of Measurement and Communication,Harbin University of Science and Technology, Harbin 150080,China)
Keywords:
electrical energy measurement power flow functional series model of power load wavelet transform
PACS:
TM 933. 3
DOI:
-
Abstract:
For the problem of electrical energy measurement under the condition of non-stationary distor-tion signal,the power flow of the non-linear power load was analyzed based on the functional series mod-els and a novel method of electrical energy measurement under the condition of distortion signal was pres-ented. The Volterra kernel was calculated with Wiener kernel of non-linear power load on the conversion theorem of Wiener kernel and Volterra kernel. Then the output signal of sine input signal was expressed with Volterra functional series. The fundamental component and distortion component of current and volt-age for power flow analysis was acquired with the decomposition and reconstruction of current and voltage signal using wavelet theory. The power flow analysis of non-linear power load was completed with the exam-ples of semiconductor rectifiers,electric locomotives and their composition,following the IEEE-Std1459-2010 standard. A new method of power measurement under the condition of distortion signals is raised ac-cording to the physical meaning and flow direction of the electrical energy flow. The simulation results show consistency with theoretical result. This proves the new method based on the power flow analysis can imple-ment the reasonable measurement of the electrical energy under the condition of distortion signal.

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Last Update: 2016-08-20