Overcurrent relay with unconventional curves and its application in industrial power systems

Soria, Oscar Arreola; Enrı́quez, Arturo Conde; Guajardo, Luis Alonso Trujillo

doi:10.1016/j.epsr.2013.12.012

Cited by 18 publications

(2 citation statements)

References 8 publications

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“…In addition, a number of researchers proposed non-standard protection approaches in order to provide a reliable protection system even under heavy penetration of DG units. A current dependent characteristic was proposed in [11] for the protection of an industrial power system. Improvement of protection coordination quality was provided using a non-standard characteristic in this study; however, the effect of DG connection was not considered.…”

Section: Relevant Literaturementioning

confidence: 99%

A Non-Standard Characteristic Based Protection Scheme for Distribution Networks

et al. 2018

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Abstract:The increasing number of distributed generation (DG) units in the distribution systems poses a challenge on protection systems in terms of coordination. In addition, the single characteristic based conventional protection causes an increase in the primary operation time of the relays due to the coordination between relay pairs. As a consequence, earlier studies investigated the utilization of non-standard characteristics and protection schemes in order to ease the insufficiencies of the standard approach. However, a commonly accepted protection approach that mitigates the effect of DG while providing lower primary operating time by levering the benefits of the non-standard protection strategy has not been developed so far. In order to overcome the aforementioned drawbacks of traditional protection, this paper firstly introduces a non-standard characteristic and then proffers an unconventional protection strategy, which utilizes a double characteristic.The suggested protection approach is tested on the IEEE 14 Bus distribution system including synchronous generator based DG connection. The results show that the proposed characteristic and protection scheme are able to provide a substantial decrease in the operation time of the relays while meeting the coordination requirements.

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Section: Relevant Literaturementioning

confidence: 99%

A Non-Standard Characteristic Based Protection Scheme for Distribution Networks

et al. 2018

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“…It also simplifies the calculations as the curvature of relay characteristics is piece‐wise linearized. In References 42‐44 non standard OcR characteristics with unconventional settings, have been developed with the objective of obtained best OcR settings with minimum operating times. For microgrid operations, conventional OcRs with standard characteristics may not provide minimum tripping times due to islanded microgrid operation, where the expected fault currents are less and OcRs fail to pick up the fault.…”

Section: Introductionmentioning

confidence: 99%