Sandia Frequency-Shift Parameter Selection to Eliminate Nondetection Zones

Zeineldin, H. H.; Kennedy, Scott

doi:10.1109/tpwrd.2008.2005362

Cited by 119 publications

(65 citation statements)

References 2 publications

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“…energy storage converters) are equipped [22] [23], and this is the situation that will be discussed in this paper. References [24] and [25] have indicated that if (1) is satisfied in an island condition, the frequency at the point of common coupling (PCC) will continuously change. ), so that it is different from the actual angle in an island condition, and θ L represents the load admittance angle.…”

Section: A Usable Formula For Frequency Shift Methodsmentioning

confidence: 99%

“…Although (5) cannot completely ensure (1), it points out the sign of dθ c /df, which is important for the analyses below. As regards the size of dθ c /df, [24] and [25] have presented the design criteria which aim at completely satisfying (1). Then, a usable formula can be derived: θ c must have the same shifting direction as θ L during the frequency variation.…”

Section: A Usable Formula For Frequency Shift Methodsmentioning

confidence: 99%

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Problems in the Classic Frequency Shift Islanding Detection Methods Applied to Energy Storage Converters and a Coping Strategy

Liu

Zhao

Huang

et al. 2018

IEEE Trans. Energy Convers.

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(2018) 'Problems in the classic frequency shift islanding detection methods applied to energy storage converters and a coping strategy.', IEEE transactions on energy conversion., 33 (2). pp. 496-505. Further information on publisher's website: Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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Section: A Usable Formula For Frequency Shift Methodsmentioning

confidence: 99%

Section: A Usable Formula For Frequency Shift Methodsmentioning

confidence: 99%

Problems in the Classic Frequency Shift Islanding Detection Methods Applied to Energy Storage Converters and a Coping Strategy

Liu

Zhao

Huang

et al. 2018

IEEE Trans. Energy Convers.

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“…Islanding detection methods can be divided into three main categories: communication based [5,6], active based [7][8][9][10][11][12][13][14][15], and passive based [16][17][18][19][20][21][22]. Communication based methods are very accurate but are the most expensive among islanding detection techniques.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Sandia Frequency Shift (SFS) is an improved version of AFD in which a positive feedback is used in determining the chopping factor (tv), as shown in the equation (5), where CF o is the chopping factor in grid-connected mode where there is no frequency deviation, K is the positive feedback gain, f is the measured frequency, and f o is the nominal frequency (60 Hz) [13,14,15].…”

Section: Sandia Frequency Shiftmentioning

confidence: 99%

A Universal Islanding Detection Technique for Distributed Generation Using Pattern Recognition

Faqhruldin¹,

El-Saadany²,

Zeineldin

2014

IEEE Trans. Smart Grid

153

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“…The corresponding system operating conditions are called nondetection zones (NDZ) and the islanding detection failure is named unintentional islanding [10], [13], [14]. In the case of synchronous distributed generators, the capacity of a single unit is commonly larger than 1 MVA [1], which can be comparable to the islanded load depending on recloser locations.…”

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confidence: 99%

Nondetection index of anti-islanding passive protection of synchronous distributed generators

Salles

Freitas

Vieira

et al. 2013

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)

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Abstract-Synchronous distributed generators are prone to operate islanded after contingencies, which is usually not allowed due to safety and power-quality issues. Thus, there are several anti-islanding techniques; however, most of them present technical limitations so that they are likely to fail in certain situations. Therefore, it is important to quantify and determine whether the scheme under study is adequate or not. In this context, this paper proposes an index to evaluate the effectiveness of anti-islanding frequency-based relays commonly used to protect synchronous distributed generators. The method is based on the calculation of a numerical index that indicates the time period that the system is unprotected against islanding considering the global period of analysis. Although this index can precisely be calculated based on several electromagnetic transient simulations, a practical method is also proposed to calculate it directly from simple analytical formulas or lookup tables. The results have shown that the proposed approach can assist distribution engineers to assess and set anti-islanding protection schemes.

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Sandia Frequency-Shift Parameter Selection to Eliminate Nondetection Zones

Cited by 119 publications

References 2 publications

Problems in the Classic Frequency Shift Islanding Detection Methods Applied to Energy Storage Converters and a Coping Strategy

Problems in the Classic Frequency Shift Islanding Detection Methods Applied to Energy Storage Converters and a Coping Strategy

A Universal Islanding Detection Technique for Distributed Generation Using Pattern Recognition

Nondetection index of anti-islanding passive protection of synchronous distributed generators

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