NDLI: Improved digital algorithm for adaptive reclosing for transmission lines with shunt reactors

Content Provider	IET Digital Library
Author	Luo, Xunhua Huang, Chun Jiang, Yaqun
Abstract	This study presents an improved algorithm of adaptive single-phase auto-reclosing (ASPAR) for extra high voltage transmission lines with shunt reactors. It shows that the odd and even harmonic factors of the faulted phase voltage have different characteristic in different stages after breaker open. During second arc period, the odd harmonics are dominant, while the even harmonics distortion factor calculated by discrete Fourier transform is found in relatively high level after arc extinction. Hence, the calculation of ratio of even harmonic factor to odd harmonic factor (REO) is expected to determine the secondary arc extinction. The algorithm is easy to implement with small computation and no more than 20 ms delay. Moreover, the REO threshold is taken constant at unity and need not be skilfully assigned. Analysis is provided by EMTP emulation as well as filed data, and the high reliability of ASPAR has been verified.
Starting Page	2066
Ending Page	2070
Page Count	5
ISSN	17518687
Volume Number	10
e-ISSN	17518695
Issue Number	Issue 9, Jun (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/10/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2015.1078
Journal	IET Generation, Transmission & Distribution
Publisher Date	2016-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Single-phase Auto-reclosing ASPAR Discrete Fourier Transform EHV Transmission Line Even Harmonics Distortion Factor Faulted Phase Voltage Harmonics Improved Digital Algorithm Integral Transforms Odd Harmonic Factors Power Supply Quality Power System Harmonics Power Transmission Cables Power Transmission Fault Power Transmission Line Power Transmission Reliability Ratio-of-even Harmonics-to-odd Harmonics Calculation Reactors (Electric) Reliability REO Calculation Second Arc Period Secondary Arc Extinction Determination Shunt Reactors Transformer And Reactors
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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