Feasibility study of noise pattern analysis based ground fault locating method for ungrounded DC shipboard power distribution systems

Pan, Yan; Steurer, M.; Baldwin, T.L.

doi:10.1109/ests.2009.4906488

Cited by 7 publications

(4 citation statements)

References 2 publications

(7 reference statements)

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“…The mid-point voltage of AC/DC converters is used in this method due to the significant change in this point during faults, and WT is accordingly utilized to locate the high impedance fault distances accurately. In [84], the current characteristic of the DC/DC converter is used, and by applying filtering at the input terminal, the fault location is estimated. The current characteristic of the AC/DC converter and WT is used in [85] to locate the fault.…”

Section: Converter-based Schemesmentioning

confidence: 99%

Protection Systems for DC Shipboard Microgrids

Bayati

Savaghebi

2021

Energies

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In recent years, shipboard microgrids (MGs) have become more flexible, efficient, and reliable. The next generations of future shipboards are required to be equipped with more focuses on energy storage systems to provide all-electric shipboards. Therefore, the shipboards must be very reliable to ensure the operation of all parts of the system. A reliable shipboard MG should be protected from system faults through protection selectivity to minimize the impact of faults and facilitate detection and location of faulty zones with the highest accuracy and speed. It is necessary to have an across-the-board overview of the protection systems in DC shipboards. This paper provides a comprehensive review of the issues and challenges faced in the protection of shipboard MGs. Furthermore, given the different types of components utilized in shipboard MGs, the fault behavior analysis of these components is provided to highlight the requirements for their protection. The protection system of DC shipboards is divided into three sub-systems, namely, fault detection, location, and isolation. Therefore, a comprehensive comparison of different existing fault detection, location, and isolation schemes, from traditional to modern techniques, on shipboard MGs is presented to highlight the advantages and disadvantages of each scheme.

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Section: Converter-based Schemesmentioning

confidence: 99%

Protection Systems for DC Shipboard Microgrids

Bayati

Savaghebi

2021

Energies

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“…A new algorithm based on a combination of traveling waves and a cross-correlation method has been proposed for the calculation of the fault location in the DC cable of both VSC and CSC HVDC systems [14]. Reference [15] utilizes noise pattern analysis caused by the switching of power electronic devices to locate ground faults in ungrounded DC shipboard power distribution systems. Active impedance estimation has been suggested for fault location in a zonal DC marine power system [16].…”

Section: Introductionmentioning

confidence: 99%

An Intelligent Method for Fault Location Estimation in HVDC Cable Systems Connected to Offshore Wind Farms

Ashrafi Niaki,

Sahebkar Farkhani,

Chen

et al. 2023

Wind

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Large and remote offshore wind farms (OWFs) usually use voltage source converter (VSC) systems to transmit electrical power to the main network. Submarine high-voltage direct current (HVDC) cables are commonly used as transmission links. As they are liable to insulation breakdown, fault location in the HVDC cables is a major issue in these systems. Exact fault location can significantly reduce the high cost of submarine HVDC cable repair in multi-terminal networks. In this paper, a novel method is presented to find the exact location of the DC faults. The fault location is calculated using extraction of new features from voltage signals of cables’ sheaths and a trained artificial neural network (ANN). The results obtained from a simulation of a three-terminal HVDC system in power systems computer-aided design (PSCAD) environment show that the maximum percentage error of the proposed method is less than 1%.

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“…New algorithms for locating faults need to be applied since ungrounded power systems do not provide considerable fault currents for tracing fault location. A method based on noise pattern analysis exhibited promising potential [6]− [8].…”

Section: Introductionmentioning

confidence: 99%

Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems

Graber

Steurer

Kvitkovič

et al. 2013

2013 IEEE Electric Ship Technologies Symposium (ESTS)

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Several key performance parameters of shipboard power systems are affected by the grounding scheme applied. The grounding scheme impacts the nature of voltage transients during switching events and faults, identifiability and locatability of ground faults, fault current levels, and power quality. Power system simulations play an important role in choosing an appropriate grounding scheme and optimizing its components. The tools typically used for power system analysis need to be carefully tested to determine if they are appropriate for modeling effects of different grounding schemes and in particular the high frequency transients. This paper sheds light on modeling and validation techniques specific to grounding models. Furthermore, insight is provided to present research into new types of power system modeling techniques based on scattering parameters for improved accuracy at higher frequencies of interest. A testbed designed to study the impact of different types of grounding schemes is also introduced and first characterization measurements in the frequency domain provided. The paper concludes with an outlook to future work, which will focus on rigorous validation of the models developed.

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Feasibility study of noise pattern analysis based ground fault locating method for ungrounded DC shipboard power distribution systems

Cited by 7 publications

References 2 publications

Protection Systems for DC Shipboard Microgrids

Protection Systems for DC Shipboard Microgrids

An Intelligent Method for Fault Location Estimation in HVDC Cable Systems Connected to Offshore Wind Farms

Time and frequency domain methods to evaluate grounding strategies for medium voltage DC shipboard power systems

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