Procedures for fault location and isolation to solve protection selectivity problems in MV distribution networks with dispersed generation

Conti, S.; Nicotra, S.

doi:10.1016/j.epsr.2008.05.003

Cited by 43 publications

(16 citation statements)

References 6 publications

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“…To solve the problem cited at point 1), we propose to use the advanced fault location and isolation procedure (refereed to as FLIP in the following) for MV distribution networks with high penetration of DG presented in [12]. The procedure is based on the use of algorithms appropriately developed to allow the automation system to identify the monitoring and protection devices to be involved in the fault location procedure and to define the actions they have to perform to isolate the fault.…”

Section: An Overview Of the Proposed Integrated Protection Schemementioning

confidence: 99%

Integrated protection scheme to coordinate MV distribution network devices, DG interface protections and micro-grids operation

Conti

Raiti

2009

2009 International Conference on Clean Electrical Power

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The present work deals with the research of novel technical solutions to improve service continuity in MV distribution networks in presence of dispersed generation (DG). In particular, the paper focuses on the development of new criteria to manage both network protections and DG interface protections in a coordinated way, also in view of allowing portions of MV distribution networks to operate as intentional islands, in other words as temporary autonomous micro-grids, in case of faults or anomalies in the main distribution system.

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Section: An Overview Of the Proposed Integrated Protection Schemementioning

confidence: 99%

Integrated protection scheme to coordinate MV distribution network devices, DG interface protections and micro-grids operation

Conti

Raiti

2009

2009 International Conference on Clean Electrical Power

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“…This procedure may not allow the RDG units to have enough time to be disconnected from the network. In this case, RDG units may sustain the voltage and fault arc, preventing successful reclosing in case of temporary faults [12].…”

Section: Operating Protection Issues In the Presence Of Rdgsmentioning

confidence: 99%

“…The presence of RDG reduces the current seen by the protective device and reduces its sensitivity to the fault such that the fault must be closer to the protective device to be detectable. Another way of visualizing this situation is to picture the fault farther away as a result of the RDG [12]. Temporary faults.…”

Section: Operating Protection Issues In the Presence Of Rdgsmentioning

confidence: 99%

Effect of Renewable Distributed Generators on the Fault Current Level of the Power Distribution Systems

Zayandehroodi

Mohamed

Shareef

et al. 2012

AMR

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Abstract. The presence of renewable distributed generator (RDG) in a distribution system will have unfavorable impact on the operating system because the distribution system is no longer radial in nature and is not supplied by a single main power source. With RDGs in a distribution network, it brings about a change in the fault current level of the system and causes many problems in the protection system, such as false tripping of protective devices, protection blinding, an increase and decrease in short-circuit levels. This paper presents the effect of RDGs on the fault current level of the system. The operating protection issues particularly in cases where RDGs are added to a LV distribution feeder are also discussed.

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“…Some of them use compensation factors [8] for the residual voltage whereas others study the shape of charge-voltage curves when a ground fault is present [9]. Other options include the installation of current and voltage sensors along the medium voltage network and install management software to detect the feeder with defect [10,11] after the protection systems have tripped the circuit breaker corresponding to the feeder with ground defect.…”

Section: State Of the Artmentioning

confidence: 99%

A Novel Ground Fault Non-Directional Selective Protection Method for Ungrounded Distribution Networks

et al. 2015

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This paper presents a new selective and non-directional protection method to detect ground faults in neutral isolated power systems. The new proposed method is based on the comparison of the rms value of the residual current of all the lines connected to a bus, and it is able to determine the line with ground defect. Additionally, this method can be used for the protection of secondary substation. This protection method avoids the unwanted trips produced by wrong settings or wiring errors, which sometimes occur in the existing directional ground fault protections. This new method has been validated through computer simulations and experimental laboratory tests.

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Procedures for fault location and isolation to solve protection selectivity problems in MV distribution networks with dispersed generation

Cited by 43 publications

References 6 publications

Integrated protection scheme to coordinate MV distribution network devices, DG interface protections and micro-grids operation

Integrated protection scheme to coordinate MV distribution network devices, DG interface protections and micro-grids operation

Effect of Renewable Distributed Generators on the Fault Current Level of the Power Distribution Systems

A Novel Ground Fault Non-Directional Selective Protection Method for Ungrounded Distribution Networks

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