Performance of three islanding detection methods for grid-tied multi-inverters

El-Moubarak, Mageda; Hassan, Mahmoud A.; Faza, Ayman

doi:10.1109/eeeic.2015.7165481

Cited by 18 publications

(26 citation statements)

References 12 publications

(10 reference statements)

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“…This method can easily be implemented with the help of a microprocessor-based controller. However, this method degrades the power quality because of the disturbance signals, which causes a variation in the frequency or magnitude of the output current [26][27][28][29][30][31][32][33][34][35][36][37][38][39]. …”

Section: Active Islanding Detection Methodsmentioning

confidence: 99%

Comparative Study of Passive and Active Islanding Detection Methods for PV Grid-Connected Systems

2018

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Photovoltaic (PV) power grid-connected systems have the advantages of being prompt and reliable supplies of electrical power. Nevertheless, the installation and operation requirements from the grid side have to be fulfilled in order to guarantee the security of the PV system technicians and the efficiency of the power system. Particularly, the potential for "islanding" is one of the dreads that are brought about by PV grid-connected systems. To be able to tackle these concerns, this paper investigates recent islanding detection techniques and topologies for PV systems. Active islanding detection techniques apply regular disturbances to the inverter system and then analyze the output voltage or frequency to investigate the islanding and stability of the grid. If the injected disturbances influence the load voltage or frequency, the controller forces the intermediate inverter to stop sending power to the connected load. In addition, several islanding detection techniques that inject a periodical signal to the reference current that causes a change in the magnitude of inverter output voltage when islanding happens in a three-phase photovoltaic grid-connected system are discussed. The validity of the proposed technique is tested and verified through PSIM software.

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Section: Active Islanding Detection Methodsmentioning

confidence: 99%

Comparative Study of Passive and Active Islanding Detection Methods for PV Grid-Connected Systems

2018

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“…Moreover, the performance of a system having two parallel‐connected inverters is discussed in [37, 38] by analysing the NDZs of a combination of frequency drifting methods like active frequency drift (AFD), SFS, and SMS [38]. In [39], the performance of three grid‐tied inverters with its own active IDM [Sandia voltage shift (SVS), SFS, and SMS] and connected in parallel to the same load has been explored. The classical linear instability method of islanding prevention implemented in the Teslaco multi‐inverters is studied in [40], in which the relation between run‐on times and the number of inverters is presented [39].…”

Section: Introductionmentioning

confidence: 99%

“…In [39], the performance of three grid‐tied inverters with its own active IDM [Sandia voltage shift (SVS), SFS, and SMS] and connected in parallel to the same load has been explored. The classical linear instability method of islanding prevention implemented in the Teslaco multi‐inverters is studied in [40], in which the relation between run‐on times and the number of inverters is presented [39]. In [32], a small‐signal stability analysis of dynamic NDZs of the positive feedback anti‐islanding scheme for single‐ and multi‐inverters systems is proposed.…”

Section: Introductionmentioning

confidence: 99%

Hybrid islanding detection technique for single‐phase grid‐connected photovoltaic multi‐inverter systems

Barkat

Cheknane

Guerrero

et al. 2020

IET Renewable Power Generation

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This study presents the performance of a novel hybrid islanding detection method for multi‐single‐phase photovoltaic (PV) inverters based on the combination of four active methods and three passive methods. Although islanding detection in PV multi‐inverter systems has been widely researched, most islanding studies are focused on three‐phase inverters, rather than single‐phase ones. In this study, different active and passive methods are used to detect the islanding of four paralleled single‐phase PV inverters. By combining those methods synergistically, it reduces their weakness of each method, while combining their advantages. The novelty of the proposed system methodology consists of four paralleled single‐phase inverters equipped with four different active methods, namely active frequency drift, Sandia frequency shift (SFS), sliding mode frequency shift, and Sandia voltage shift triggered by a block composed of three passive methods: voltage frequency protection, rate of change of frequency, and DC‐link. This novel hybrid system is studied under different detailed scenarios, where it shows its performance and characteristics.

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“…When in grid connected connection, the amplitude of voltage is not affected noticeably but in island condition, power output can expedite the voltage drift to detect islanding. SVS affects the maximum power tracking mechanism of the inverter due to alteration of power output [43,44]. [47].…”

Section: Sandia Voltage Shift (Svs)mentioning

confidence: 99%

Shifting of research trends in islanding detection method - a comprehensive survey

Dutta

Sadhu

Reddy

et al. 2018

Prot Control Mod Power Syst

116

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The augmentation in electricity demand, power system privatization as well as efficacy of renewable resources has paved the way for power system companies and researchers to exploit the field of grid connected distributed generation (DG) and its issues, islanding being a dominant one. Several research works have been conducted to mitigate the issues of islanding detection (ID). In context of this, the paper gives a comprehensive review of islanding issues, standard test systems, criteria and shifting of research trends in islanding detection methods (IDMs). The significant contributions pertain to categorization of IDMs, evaluation of non-detection zone (NDZ) for each test system, disquisition on evolution and advancement of IDMs and its comparisons based on criteria such as NDZ, run on time, nuisance tripping percentage, applicability in multi DG system and implementation cost to draw out the strength and shortcomings of individual methods that will come to aid to the companies or researchers for establishing the applicability and appropriateness of such method for their concerned domain.

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Performance of three islanding detection methods for grid-tied multi-inverters

Cited by 18 publications

References 12 publications

Comparative Study of Passive and Active Islanding Detection Methods for PV Grid-Connected Systems

Comparative Study of Passive and Active Islanding Detection Methods for PV Grid-Connected Systems

Hybrid islanding detection technique for single‐phase grid‐connected photovoltaic multi‐inverter systems

Shifting of research trends in islanding detection method - a comprehensive survey

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