Fast Low Frequency Fault Location and Section Identification Scheme for VSC-Based Multi-Terminal HVDC Systems

Panahi, Habib; Sanaye‐Pasand, M.; Niaki, Seyed Hassan Ashrafi; Zamani, Reza

doi:10.1109/tpwrd.2021.3107513

Cited by 13 publications

(8 citation statements)

References 38 publications

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“…Also [63] uses low frequency components of voltages and currents of the terminals to calculate the fault location. As low frequency components are used, it is not required to use complex and costly instruments to catch the information of high frequency components.…”

Section: Wide-area Fault Locationmentioning

confidence: 99%

“…As low frequency components are used, it is not required to use complex and costly instruments to catch the information of high frequency components. A current limiter has been considered in [62], [63] for fault mitigation. It was found that the fault location is estimated accurately even in presence of current limiting function.…”

Section: Wide-area Fault Locationmentioning

confidence: 99%

“…It should be noted that the magnitudes of other harmonics of the fault signal are usually significant and they can be measured to be considered in fault location process. Hence, new fault location methods can be proposed considering this suggestion and based on the harmonic analysis of the fault signal [63].…”

Section:  Considering the Last Sampling Data In Calculatingmentioning

confidence: 99%

See 2 more Smart Citations

Advances in Transmission Network Fault Location in Modern Power Systems: Review, Outlook and Future Works

Panahi

Zamani²,

Sanaye‐Pasand

et al. 2021

IEEE Access

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Section: Wide-area Fault Locationmentioning

confidence: 99%

Section: Wide-area Fault Locationmentioning

confidence: 99%

Section:  Considering the Last Sampling Data In Calculatingmentioning

confidence: 99%

See 1 more Smart Citation

Advances in Transmission Network Fault Location in Modern Power Systems: Review, Outlook and Future Works

Panahi

Zamani²,

Sanaye‐Pasand

et al. 2021

IEEE Access

Self Cite

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“…Scholars have carried out extensive research on AC/DC fault characteristics of flexible DC systems with transformers. Based on the two-level voltage source converter (VSC), reference [9] analyzes the response characteristics of unipolar DC grounding faults and bipolar DC short circuit faults, and reference [10] proposes the fault location strategy and system protection strategy. Reference [11] proposes three topology structures of SNOP, and comprehensively compares their advantages and disadvantages combined with the analysis of AC/DC fault characteristics.…”

Section: Introductionmentioning

confidence: 99%

AC Fault Ride-Through Strategy of a Transformerless Soft Normally Open Point

Xu¹,

Huang²,

Lu³

et al. 2022

Applied Sciences

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This paper focuses on the soft normally open point (SNOP) which has no transformers and connects to the 10 kV distribution network through the arc suppression coil grounding mode. A mathematical model containing positive-, negative-, and zero-sequence components under AC fault is established by the circuit analysis and the sequence component decomposition. Then the voltage fluctuation mechanism at the DC side and the non-fault AC side caused by the zero-sequence voltage on the fault side is analyzed under the case without transformers. Taking the single-phase grounding fault as an example, the fluctuation formula of the DC voltage and AC voltage is deduced in detail. Based on the theoretical analysis, the zero-sequence control strategy and the sub-module improvement strategy of the modular multilevel converter (MMC) are proposed. A back-to-back SNOP simulation model is established in PSCAD/EMTDC. The simulation results verify the accuracy of the theoretical analysis, as well as the validity of zero-sequence control and MMC topology improvement strategies.

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“…However, fault develops very fast in flexible DC power grid, which will endanger the whole power grid within a few milliseconds, and seriously affect the operational safety and stability of DC power grid [4][5][6]. Therefore, fast and selective line protection scheme has become a key technology in ensuring the safe and reliable operation of DC power grid [7,8].…”

Section: Introductionmentioning

confidence: 99%

A new pilot protection scheme for modular multi‐level converter‐based HVDC system based on voltage matching factor

Xiao

et al. 2022

IET Generation Trans & Dist

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Concerning the incorrect operation of line protection in modular multi-level converterbased multi-terminal DC system, a pilot protection method based on voltage matching factor is proposed. First, the dynamic switching process of flexible DC converter submodule is analyzed, and the expression of DC voltage of converter station considering the influence of alternating current (AC) system is derived. On this basis, the model of DC line voltage considering the influence of AC injection current is built, and the equivalent DC line voltage is calculated according to the voltage model. Then, by constructing the distortion factor which reflects the difference between the equivalent DC line voltage and actual DC line voltage, the protection criterion for the identification of internal and external faults is established. Finally, simulation tests on real time laboratory (RT-LAB) platform verify that the proposed scheme can correctly distinguish between internal and external faults in different fault cases, with fast operation speed and strong immunity to the fault resistance.

show abstract

Fast Low Frequency Fault Location and Section Identification Scheme for VSC-Based Multi-Terminal HVDC Systems

Cited by 13 publications

References 38 publications

Advances in Transmission Network Fault Location in Modern Power Systems: Review, Outlook and Future Works

Advances in Transmission Network Fault Location in Modern Power Systems: Review, Outlook and Future Works

AC Fault Ride-Through Strategy of a Transformerless Soft Normally Open Point

A new pilot protection scheme for modular multi‐level converter‐based HVDC system based on voltage matching factor

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