NDLI: A method of adjusting measurements of external grid based on Predictor-Corrector algorithm

Content Provider	IEEE Xplore Digital Library
Author	Zhang Haibo Li Penghua
Copyright Year	2014
Description	Author affiliation: State Key Lab. of Alternate Electr. Power Syst. With Renewable Energy Sources, North China Electr. Power Univ., Beijing, China (Zhang Haibo; Li Penghua)
Abstract	In practice, SCADA system of each control center samples to complete periodic state estimation calculation. But each control center's data acquisition time is inconsistent. Measurement sections provided by different subsystems have time difference, during the integrated calculation and analysis of whole grid. The time difference of measurements acquisition among control centers brings estimation error of external grid affecting accuracy of state estimation. To address this problem, this paper proposes a Predictor - Corrector algorithm. The algorithm uses the feather that the same measuring point in overlap region owns different values to predict the measurement acquisition time difference between the subsystems which starts the distributed calculation and other subsystems. Then corrects the measurements of external grid based on predicted time difference and the measurements changing curves of external grid to ensure all measurements are in the same time. This paper uses the data of Mengxi Power Grid to validate the algorithm.
Starting Page	90
Ending Page	95
File Size	662747
Page Count	6
File Format	PDF
ISBN	9781479913008
DOI	10.1109/ISGT-Asia.2014.6873770
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-05-20
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Exponential smoothing Linear extrapolation Winters model Gray model method Time measurement Forecasting Accuracy Measurement section Asia Predictor — Corrector algorithm Load derivation method Prediction algorithms State estimation Acquisition time difference Ultra-short-term bus load forecasting Load modeling SCADA
Content Type	Text
Resource Type	Article

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