Proceedings ArticleDOI
Islanding detection scheme based on morphological wavelets
TLDR
A new islanding detection scheme in time domain based on Mathematical morphology is proposed that uses the Morphological gradient wavelet (MGW) to operate on voltage and current in any phase.Abstract:
Unintentional islanding is a critical issue in the integration of distributed generation to the power distribution network. Islanding detection or anti islanding protection for a distribution generation is important in this regard. The paper proposes a new islanding detection scheme in time domain based on Mathematical morphology. The detection technique uses the Morphological gradient wavelet(MGW) to operate on voltage and current in any phase. The Norm of the voltage and current after passing through the MGW is calculated. This ratio is used as a criteria for detecting an island. Simulations are carried out for different islanding and non islanding events to study the effectiveness of the algorithm.read more
Citations
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Journal ArticleDOI
Methods to Detect the Occurrence of an Unintentional Island with Passive Approach: A Review
TL;DR: This review provides an insight into passive parameters (which are islanding detection indicators) considered by various researchers and their performance with respect to detection time, non-detection zone, performance in a noisy environment exclusively for passive schemes employing signal processing techniques, difficulty level and process of selecting threshold value(s).
Journal ArticleDOI
A comprehensive literature review of conventional and modern islanding detection methods
Nauman Ali Larik,Muhammad Faizan Tahir,Z. M. Salem Elbarbary,Muhammad Zain Yousaf,Muhammad Ahmad Khan +4 more
TL;DR: A broad assessment about islanding detection methods with their limitations and benefits are explained with respect to accuracy, detection time and non-detection zone in this paper , where comparative assessments of different IDMs are listed in tabulation for conveniently judging the most economical and efficient approach.
References
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Journal ArticleDOI
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H.J.A.M. Heijmans,John Goutsias +1 more
TL;DR: A general theory for constructing linear as well as nonlinear pyramid decomposition schemes for signal analysis and synthesis and provides the foundation of a general approach to constructing nonlinear wavelet decompositions schemes and filter banks.
Journal ArticleDOI
Active Islanding Detection Using High-Frequency Signal Injection
TL;DR: In this paper, the authors proposed an active islanding detection method based on the measurement of the grid high-frequency impedance by means of the injection of a highfrequency voltage, which can be used for the adaptive control of the power converter.
Book
Protective Relaying of Power Systems Using Mathematical Morphology
Qinghua Wu,Z. Lu,T. Y. Ji +2 more
TL;DR: In this article, the authors discuss the development of novel protection relaying algorithms using Mathematical Morphology (MM), which is a nonlinear signal processing technique derived from set theory and geometry, and brings together the applications of MM to develop new protection relays for the protection of a variety of power system components (including transmission lines, bus, and power transformers), as well as for the distorted waveform detection and compensation which are required for the operation of many conventional relays.
Journal ArticleDOI
Enhancement of islanding-detection of distributed generation systems via wavelet transform-based approaches
TL;DR: The approach embedded with this transform technique has grasped the appearance of the islanding event in a highly effective manner and would serve as an efficient aid such that the mains power disconnection can be better distinguished.
Journal ArticleDOI
Performance of ROCOF relays for embedded generation applications
TL;DR: In this article, the performance characteristics of rate of change of frequency (ROCOF) relays for embedded generation islanding detection have been investigated and the concepts of detection-time versus power-imbalance curve and critical power imbalance are proposed.
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