Journal ArticleDOI
Evaluation of anti-islanding schemes based on nondetection zone concept
TLDR
In this paper, the authors proposed a non-detection zone (NDZ) as a performance index to evaluate different anti-islanding schemes and derived the NDZ for three basic passive anti-ISL schemes: under/over voltage, underover frequency, and phase jump.Abstract:
This paper proposes a nondetection zone (NDZ) as a performance index to evaluate different anti-islanding schemes. The NDZ for three basic passive anti-islanding schemes: under/over voltage, under/over frequency, and phase jump are derived analytically and validated by simulation. Based on the NDZ, not only can the dominant factors that influence anti-islanding protection be identified, it may also support definition of optimal combined schemes that lead to a reduced NDZ. The methodology presented in the paper can be extended to the evaluation of other anti-islanding schemes.read more
Citations
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Journal ArticleDOI
Control of Power Converters in AC Microgrids
TL;DR: In this paper, a detailed analysis of the main operation modes and control structures for power converters belonging to micro-grids is carried out, focusing mainly on grid-forming, grid-feeding, and grid-supporting configurations.
Journal ArticleDOI
Performance assessment of active frequency drifting islanding detection methods
Luiz A. C. Lopes,Huili Sun +1 more
TL;DR: In this article, a load parameter space based on the values of the quality factor and resonant frequency of the local load (Q/sub f/ versus f/sub 0/) was used to represent the NDZ of frequency drifting IDMs for any RLC loads.
Proceedings ArticleDOI
Overview of Anti-Islanding Algorithms for PV Systems. Part I: Passive Methods
TL;DR: In this paper, an overview of the active methods used for islanding detection is presented, and the reported algorithms are carefully analyzed in their advantage and drawbacks and the considerations are validated by tests results obtained in accordance with the IEEE Std. 929-2000 procedure.
Journal ArticleDOI
Impact of DG interface control on islanding detection and nondetection zones
TL;DR: In this paper, the impact of the interface control strategy of inverter-based DGs on islanding detection is examined and the Nondetective Zone (NDZ) is derived analytically for each interface control and validated by simulation.
Journal ArticleDOI
Improved Active Frequency Drift Anti-islanding Detection Method for Grid Connected Photovoltaic Systems
Ahmad Yafaoui,Bin Wu,Samir Kouro +2 more
TL;DR: In this article, an improved active frequency drift (AFD) anti-islanding method is presented based on a different current distortion injection waveform, which generates 30% less harmonic distortion compared to classic AFD, resulting in faster island detection and improved non-detection zone.
References
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Journal ArticleDOI
Determining the relative effectiveness of islanding detection methods using phase criteria and nondetection zones
TL;DR: In this article, a simplified method of determining which islanding detection methods (IDMs) are most effective is presented. But, the NDZs of several common IDMs, such as Sandia Frequency Shift (SFS) and SFS-based IDMs are not determined.
Proceedings ArticleDOI
Loss of mains detection for embedded generation by system impedance monitoring
P. O'Kane,B. Fox +1 more
TL;DR: In this article, the authors present a new technique for detecting loss of mains based on the measurement of power system impedance and overcomes the deficiencies of more popular relays. But this technique is not suitable for the case where the relays are disconnected from the mains supply.
Proceedings ArticleDOI
COROCOF: comparison of rate of change of frequency protection. A solution to the detection of loss of mains
TL;DR: This paper describes COROCOF (comparison of rate-of-change of frequency) protection, for which a patent has been applied for by Powergen (UK), and is compatible with other forms of protection.
Journal ArticleDOI
Loss-of-mains detection for small generators
TL;DR: In this article, a loss-of-mains detection method for use with very small generators is proposed, where a known load is repeatedly switched on to the supply, and the resulting voltage changes used to estimate the source impedance, and hence to detect loss of mains.
Journal ArticleDOI
A new approach to islanding detection of dispersed generators with self-commutated static power converters
Shyh-Jier Huang,Fu-Sheng Pai +1 more
TL;DR: In this paper, an islanding detection approach for dispersed generators with a self-commutated static power converter is proposed based on the monitoring of the magnitude and sign change in /spl part/f/sub B//|/spl part part/P/sub L/.
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