Islanding operation of distributed generators in active distribution networks

Chowdhury, S.P.; Ten, Chui Fen; Crossley, P.A.

doi:10.1109/upec.2008.4651556

Cited by 12 publications

(5 citation statements)

References 7 publications

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“…Furthermore, as the penetration of DG increases, the islanded operation of certain sections of the distribution network may become beneficial and increase the reliability of power supply to the customers [3]. However, changing between islanded and grid connected modes of operation creates two scenarios with very different fault levels [4].…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [1,[5][6][7][8] showed that DG affects the sensitivity and the operating time of the OCRs while the authors of [9] proved that changes in network topology compromise the correct coordination between OCRs. The impact of islanding was analyzed in [4,10], where the authors assessed the amount of fault level reduction during islanded operation and proved that it causes slow operating times and possible blinding of OCRs.…”

Section: Introductionmentioning

confidence: 99%

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An Adaptive Overcurrent Protection Scheme for Distribution Networks

Coffele

Booth

Dyśko

2015

IEEE Trans. Power Delivery

292

107

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Distribution networks are evolving towards the vision of smart grids, with increasing penetration of Distributed Generation (DG), introduction of Active Network Management (ANM) and potentially islanded modes of operation. These changes affect both fault levels and fault current paths and have been demonstrated to compromise the correct operation of the overcurrent protection system. This paper presents an adaptive overcurrent protection system which automatically amends the protection settings of all overcurrent relays in response to the impact of DG, ANM and islanding operation. The scheme has been developed using commercially available protection devices, employs IEC61850 based communications and has been demonstrated and tested using a Hardware-In-the-Loop (HIL) laboratory facility. A systematic comparison of the performance of the proposed adaptive scheme alongside that of a conventional overcurrent scheme is presented. This comparison quantifies the decrease in false operations and the reduction of mean operating time that the adaptive system offers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Adaptive Overcurrent Protection Scheme for Distribution Networks

Coffele

Booth

Dyśko

2015

IEEE Trans. Power Delivery

292

107

View full text Add to dashboard Cite

show abstract

“…At present, islanded operation is normally not permitted, but it may become desirable as DG penetration increases in the future, making sustained islanded operation viable. The impact of islanded operation was analysed in [8,9], where the authors assessed the amount of fault level reduction during islanded operation and proved that it increases operating times and can cause non-operation of OCRs.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Adaptive Overcurrent Protection using IEC 61850 Communications

Coffele¹,

Blair²,

Booth³

et al. 2013

22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)

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This paper contains a description of an adaptive protection scheme that has been implemented and demonstrated in a hardware in the loop simulation environment using commercially available protection hardware and IEC 61850 communications. The implementation is based on an actual 11kV system which includes distributed generation and network automation.IEC 61850 communications offers several benefits for the implementation of adaptive protection, but also presents some limitations which are discussed in the paper. An alternative approach to overcome a number of the limitations is also presented.

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“…Nevertheless, harness of RESs, even when there are good potential resources, may be problematic due to their variable and intermittent natures, thus RESs cannot necessarily be operated in a conventional manner. Instead, RESs behaviors can be predicted via expert estimators and the forecast information is exactly the kind of information that an ADN must uses to improve system efficiency (Chowdhury et al, 2008c(Chowdhury et al, , 2008d.…”

Section: Introductionmentioning

confidence: 99%

Global Warming Mitigation Using Smart Micro-Grids

Anvari‐Moghaddam¹

2012

Global Warming - Impacts and Future Perspectives

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Islanding operation of distributed generators in active distribution networks

Cited by 12 publications

References 7 publications

An Adaptive Overcurrent Protection Scheme for Distribution Networks

An Adaptive Overcurrent Protection Scheme for Distribution Networks

Demonstration of Adaptive Overcurrent Protection using IEC 61850 Communications

Global Warming Mitigation Using Smart Micro-Grids

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