Fast and systematic approach for adjusting ROCOF relay used in islanding detection of SDG

Ahmadzadeh‐Shooshtari, Babak; Golshan, Mohamad Esmail Hamedani; Rezaei-Zare, Afshin

doi:10.1049/iet-gtd.2019.0352

Cited by 6 publications

(3 citation statements)

References 30 publications

(66 reference statements)

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“…Besides, a DG set having a rating of 20 MVA is also connected at bus 5 with a 33/0.69 kV transformer. DG parameters, transformer, distribution line, and load have been adopted in [19] and are given in the Appendix. The single line diagram of the system has been depicted in Fig.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…On the other side, passive IDTs can be classified into time and frequency domain IDTs [13–18]. In passive IDTs, under/over‐voltage and frequency relays and rate of change of frequency relay are the most used schemes for islanding protection [19]. The performance of passive IDTs is remarkable when a noticeable power mismatch between the load and generation exists; however, it does not provide proper islanding protection when power mismatch is small.…”

Section: Introductionmentioning

confidence: 99%

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Passive method for islanding detection using variational mode decomposition

Thakur¹,

Singh²,

Shukla³

et al. 2020

IET Renewable Power Generation

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As the distributed energy resources penetration level increases, the distribution system operator faces a challenging task of unintentional islanding detection. Besides islanding detection schemes are affected due to the presence of different types of distributed generation systems and smart inverters. The presence of these devices hinders the capability of islanding detection schemes. To mitigate these issues, this study proposes a practical methodology of variational mode decomposition‐based energy index for islanding detection. It decomposes the sampled voltage signal at the point of common coupling into four modes/intrinsic mode functions (IMFs). Among these modes/IMFs, the energy index of mode two has been utilised to detect the islanding. It is an entirely intrinsic, adaptive, and variational method. The five bus and practical distribution systems have been modelled using PSCAD/EMTDC software while considering various components' practical aspects. The technique has been tested for the mixed type of distributed generation and various transient events. The test results reveal that the proposed method is capable of discriminating the islanding event from other disturbances.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Passive method for islanding detection using variational mode decomposition

Thakur¹,

Singh²,

Shukla³

et al. 2020

IET Renewable Power Generation

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“…𝑉 𝐷𝐶 is dc voltage across the DC link capacitor. 𝑖 𝑑𝑟𝑒𝑓 and 𝑖 𝑞𝑟𝑒𝑓 are the active and reactive power reference and can be computed using ( 1)- (2).…”

Section: A Dq-frame Current Controllermentioning

confidence: 99%

Anti-Islanding Method for Houses Equipped with Electric Vehicles and Photovoltaic System

Irshad

Rafique

Hossain

et al. 2020

2020 2nd International Conference on Smart Power &Amp; Internet Energy Systems (SPIES)

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Integration of electric vehicles (EVs) are exponentially increasing in the global market and by enabling vehicle-to-grid (V2G) EVs can inject power back into the grid. However, in an event of unintentional islanding, injecting power into the grid may causes potential safety threats to people, equipment, and power system. This paper proposes an adaptive reactive power mismatch method to detect islanding events. When islanding occurs, the proposed method drifts the system frequency away from the nominal value. Then the islanding event is detected based on frequency variations. Results show that the proposed method effectively detects islanding event in all conditions and negligible non detection zone. Moreover, it can detect islanding within 0.801 milliseconds

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