Fault detection and location in medium‐voltage DC microgrids using travelling‐wave reflections

Saleh, Khaled A.; Hooshyar, Ali; El-Saadany, Ehab F.

doi:10.1049/iet-rpg.2019.0370

Cited by 38 publications

(9 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Likewise, Figure 27 depicts a comparison between the operation speed and reliability of the proposed approach with other respective recent approaches in this chief sphere [49][50][51][52][53][54][55][56][57][58][59].…”

Section: Resultsmentioning

confidence: 99%

Bi‐level multi‐agent system (MAS) to protect DC microgrids (DCMGs) in free renewable sources and uncertainties penetration

Bamshad,

Ghaffarzadeh

2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

DC microgrids (DCMGs) have significant advantages, but their protection can be a challenge for DCMGs expansion expressly in distributed generation sources’ (DGS) tendance. This paper proposes a quick, and precise strategy to perceive and trip any fault in DCMGs in the free tendance of DGS. A bi‐level multi‐agent system (MAS) is proposed to protect the DCMG and DGs. The MAS first level perceives the fault in DCMG via a discrete wavelet transform (DWT). The multiply of two harvest levels’ summation of DWT is exerted to detect and distinguish DC lines faults. The MAS second level detects the fault in DGS and their switchers to the point of common connection (PCC) via a differential pole (DP) controller. A four bus DCMG containing solar PV and wind sources is implemented, and the results demonstrate that the proposed plan can recognize and trip the fault by 100% of reliability.

show abstract

Section: Resultsmentioning

confidence: 99%

Bi‐level multi‐agent system (MAS) to protect DC microgrids (DCMGs) in free renewable sources and uncertainties penetration

Bamshad,

Ghaffarzadeh

2023

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

“…where e -γx is the propagation coefficient of the TW, which is the main cause of TW distortion and dispersion [55]. Its expression in s-domain is [56]:…”

Section: B Characteristics Of the Initial Traveling Wavementioning

confidence: 99%

DC Fault Protection Algorithms of MMC-HVDC Grids: Fault Analysis, Methodologies, Experimental Validations, and Future Trends

Xiang

Yang

Adam

et al. 2021

IEEE Trans. Power Electron.

105

View full text Add to dashboard Cite

To protect the converters and minimize the power transmission interruption during DC line faults, it is necessary to detect the faults at ultra-high-speed for the MMC based HVDC grids. This paper reviews the state-of-the-art of DC fault protection methods of MMC HVDC grids, and summarizes the underlying principles of each method. On this basis, the DC fault characteristics analysis in terms of modal-domain, time-domain and frequency-domain are analyzed, which direct the protection design. Typical boundary protection and non-boundary protection schemes are reviewed. The advantages and disadvantages of existing fault protection methods are compared. A two-terminal MMC-HVDC prototype is developed to test the effectiveness of three fault protection methods. Comprehensive quantitative assessments of the protection methods discussed above are carried out in a four-terminal MMC HVDC grid. Finally, the future trends of the protection schemes are discussed and the findings are concluded.

show abstract

“…The existing fault detection methods can be roughly divided into two categories: one is based on steady-state characteristic quantity of electrical [3], another one is based on transient characteristic quantity of signal [4][5]. This principle is that there will be a transient process lasting several cycles at the fault occurrence line.…”

Section: Introductionmentioning

confidence: 99%

Microgrid Fault Identification Based on VMD-MPE

Wang

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Due to complex operation of microgrid and the difficulty of extracting thin fault signal features, traditional relay protection will take misoperation to protect. This article proposes a fault detection method based on VMD-MPE to take accurate fault detection. This scheme processes the current signal through the VMD algorithm that decomposes it to different modes. Considering that MPE has the advantage of exploring the dynamic mutation within the faint signal, the MPE of the most significant mode is being computed, which can be selected to extract construct the fault signal feature and observe the difference of different phase, so as to characterize different fault types. Finally, a microgrid model system is built on the PSCAD simulation experiment platform for simulation analysis and algorithm experiments. The experimental results show that the method can achieve accurate fault detection in different operating states of microgrid, regardless of fault resistance and fault points, even maintain well accuracy in complex situations such as multiple disturbances and high impedance faults.

show abstract

Fault detection and location in medium‐voltage DC microgrids using travelling‐wave reflections

Cited by 38 publications

References 31 publications

Bi‐level multi‐agent system (MAS) to protect DC microgrids (DCMGs) in free renewable sources and uncertainties penetration

Bi‐level multi‐agent system (MAS) to protect DC microgrids (DCMGs) in free renewable sources and uncertainties penetration

DC Fault Protection Algorithms of MMC-HVDC Grids: Fault Analysis, Methodologies, Experimental Validations, and Future Trends

Microgrid Fault Identification Based on VMD-MPE

Contact Info

Product

Resources

About