Morphological Fault Detector for Adaptive Overcurrent Protection in Distribution Networks With Increasing Photovoltaic Penetration

Kavi, Moses; Mishra, Yateendra; Vilathgamuwa, D.M.

doi:10.1109/tste.2017.2759158

Cited by 26 publications

(6 citation statements)

References 14 publications

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“…A robust and versatile algorithm for over-current protection considering changes in power generation and demand is described in [43]. Faults are detected by studying abrupt changes in the current's magnitude using a multi-stage morphological fault detector (MFD).…”

Section: Challenges Of Implementing Dg Unitsmentioning

confidence: 99%

Evolution of microgrids with converter-interfaced generations: Challenges and opportunities

Hossain

Pota

Hossain

et al. 2019

International Journal of Electrical Power & Energy Systems

245

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Although microgrids facilitate the increased penetration of distributed generations (DGs) and improve the security of power supplies, they have some issues that need to be better understood and addressed before realising the full potential of microgrids. This paper presents a comprehensive list of challenges and opportunities supported by a literature review on the evolution of converter-based microgrids. The discussion in this paper presented with a view to establishing microgrids as distinct from the existing distribution systems. This is accomplished by, firstly, describing the challenges and benefits of using DG units in a distribution network and then those of microgrid ones. Also, the definitions, classifications and characteristics of microgrids are summarised to provide a sound basis for novice researchers to undertake ongoing research on microgrids.

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Section: Challenges Of Implementing Dg Unitsmentioning

confidence: 99%

Evolution of microgrids with converter-interfaced generations: Challenges and opportunities

Hossain

Pota

Hossain

et al. 2019

International Journal of Electrical Power & Energy Systems

245

View full text Add to dashboard Cite

show abstract

“…MM is a deep-rooted shape extraction technique initially suggested by Matheron and Serra for image and signal processing [31][32][33][34][35]. It consists of various non-linear signal processing tools that concentrate on shape, size and form of the signal in the time domain.…”

Section: Mathematical Morphology (Mm)mentioning

confidence: 99%

“…As explained in Section 1, the MM-based methods are introduced primarily to pre-process the fault signals and remove the DDC. The test results are compared with the existing MMbased DDC removal techniques [34,35] to verify the efficacy of the proposed DFA for the removal of the DDC. Since the conventional DFT, the adaptive mimic filter plus DFT (AMPE + DFT) [18], and the modified DFT [20] are generally utilised in the existing DPR, the effectiveness of the proposed DFA, considering the phasor estimation, is evaluated with respect to these three methods.…”

Section: Performance Evaluationmentioning

confidence: 99%

Real‐time digital filtering algorithm for elimination of the decaying DC component using mathematical morphology

Godse

Bhat

2019

IET Generation, Transmission & Distribution

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“…On the other hand, the second strategies focus on improving the protection systems to cope with the protection problems related to DG integration in the micro‐grids. In this regard, different measures are proposed consist of applying fault current limiters (FCLs) to improve the DG's fault ride‐through (FRT) capability, 9,10 using the new and programmable protection devices, 11‐13 proposing different protection schemes based on distance, differential or directional relays, 14‐18 and applying the communication systems for improving the performance of the protection systems 19,20 . While the first strategies can solve the protection issues, it may bring adverse impacts on the performance of the power system.…”

Section: Introductionmentioning

confidence: 99%

A novel adaptive protection coordination scheme for radial distribution networks in the presence of distributed generation

Bisheh

Fani

Shahgholian

2021

Int Trans Electr Energ Syst

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Summary Developing micro‐grids and increasing penetration of distributed generation (DG) bring significant techno‐economic benefits to power systems. However, the presence of DG can affect the performance of the protection system. In particular, the coordination of over‐current protection relays in the presence of DGs is a challenging task. In this article, an adaptive algorithm is proposed for protection coordination of over‐current relays. Once the coordination of relays is disturbed due to the presence of DG, the characteristic curve of the backup relay is adaptively modified based on the characteristic curve of the main relay in such a way that the coordination time interval (CTI) be in the acceptable range and therefore the coordination of relays is maintained. The proposed algorithm can maintain the coordination of over‐current relays locally only by controlling current parameter of backup relay and without imposing any restriction on the output power of DGs. Therefore, the proposed protection coordination scheme allows system operators and DG owners to exploit DG benefits without concerning about protection aspects related to the presence of DGs. The efficiency and applicability of the proposed method are validated using simulations on a typical industrial 20 kV radial distribution system. The simulation results show that the proposed algorithm can maintain the CTI of the main and backup relays in an acceptable range for various penetration levels of DGs.

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Morphological Fault Detector for Adaptive Overcurrent Protection in Distribution Networks With Increasing Photovoltaic Penetration

Cited by 26 publications

References 14 publications

Evolution of microgrids with converter-interfaced generations: Challenges and opportunities

Evolution of microgrids with converter-interfaced generations: Challenges and opportunities

Real‐time digital filtering algorithm for elimination of the decaying DC component using mathematical morphology

A novel adaptive protection coordination scheme for radial distribution networks in the presence of distributed generation

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