Grounding and fault location in power electronic based MVDC shipboard power and energy systems

_ford, b; Leonard, Isaac; Bosworth, Matthew; Steurer, M.

doi:10.1109/ests.2017.8069307

Cited by 5 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

Section: Converter-based Schemesmentioning

confidence: 99%

Protection Systems for DC Shipboard Microgrids

Bayati

Savaghebi

2021

Energies

View full text Add to dashboard Cite

show abstract

“…Another drawback of this method is the requirement of measurements in a relatively high frequency range (over 100 kHz). The influence of the converter's coupling capacitance on the accuracy of the background noise pattern is assessed in [7,8]. The study showed that the coupling capacitance has a potential influence on the scheme that requires the used pattern to be changed for different coupling capacitance values.…”

Section: Introductionmentioning

confidence: 99%

A Compensated Impedance Based Ground Fault Locator for an Unearthed Power System

Jahanger¹,

Raqib²,

Thomas³

et al. 2021

The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)

View full text Add to dashboard Cite

Continuous operation of a power system during a ground fault can be achieved by employing either a High Resistance Grounded (HRG) power source or a floating power source. However, if a second ground fault occurs in the system it can cause significant problems and therefore the presence of the First Ground Fault (FGF) must be detected, located, and repaired quickly. In this study, an active impedance based fault location method is proposed to locate the FGF in a HRG power system. The study presented shows that the magnitude of the fault resistance has only a small influence on the proposed technique. However, for unbalanced faults, the impedance of the healthy phases can distort the impedance measured and impair the accuracy of the fault location method. Therefore, a new compensated method is proposed to compensate for this distortion. The results show that a high accuracy can be achieved with the compensation, with a location error lower than 5%.

show abstract