An Improved Traveling-Wave Protection Scheme for LCC-HVDC Transmission Lines

Wu, Jiyang; Li, Haifeng; Wang, Gang; Liang, Yuansheng

doi:10.1109/tpwrd.2016.2549565

Cited by 128 publications

(63 citation statements)

References 19 publications

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“…A traveling wave-based approach to detect and locate a fault is feasible for high or medium voltage DC transmission networks [17][18][19], but may not be feasible for low voltage DC distribution networks due to their relatively short distribution lines [20]; the end user load switching could also generate noise in the signal or wave. Moreover, fault current limiters using superconductors have been considered in [21][22][23], but their optimal position still needs to be further studied for VSC-based DC distribution networks.…”

Section: Related Workmentioning

confidence: 99%

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

et al. 2018

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A low voltage direct current (LVDC) distribution network is a promising technology to meet the standards of future energy demands for smart loads. An LVDC distribution network can not only supply efficient, smooth and clean energy, but also makes the integration of renewable energy resources in the distribution system easy. A major obstacle in the implementation of the LVDC distribution network is the protection of the network during abnormal grid conditions, such as transients and faults. This paper analyzes DC fault characteristics considering an LVDC distribution network, highlights the worst case scenario during a fault and protection related issues and proposes the protection schemes for the LVDC network. In the proposed protection scheme, a fault is detected and located through superimposed components. To minimize the effect of the DC fault on the distribution network, distributed fault current limiters are introduced and the final decision to disconnect or reconnect the affected line is made on the basis of the type of fault. In addition, a reclosing scheme for a temporary fault is proposed to avoid high inrush currents and false tripping, which eventually increases the reliability. A fast communication-based backup protection is also suggested, and to reduce dependency, a secondary backup is used in the case of communication delay or failure. The proposed scheme is verified using the modified IEEE 13 node test system, which is implemented in ATPDraw. The results show that the proposed scheme can successfully detect, locate and limit a DC fault in an LVDC distribution network with different fault resistances or locations. Moreover, the network is restored successfully in the case of temporary faults.

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Section: Related Workmentioning

confidence: 99%

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

et al. 2018

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“…HVDC transmission based on LCC technology has been extensively used throughout the world for power transmission, either as long-distance interconnections or back-to-back asynchronous links [1,2,3]. Even though the Voltage-Source Converter (VSC) based HVDC system is a much more modern technology which can be the most suitable option for Multi-Terminal Direct Current (MTDC) grids, the conventional thyristor-based LCC technology is still superior to self-commutating VSC transmission in terms of power losses, capital cost, stability and reliability for large-scale HVDC networks [4].…”

Section: Introductionmentioning

confidence: 99%

A Predictive Control Strategy for Mitigation of Commutation Failure in LCC-Based HVDC Systems

Mirsaeidi

Xiang

Tzelepis

et al. 2019

IEEE Trans. Power Electron.

134

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High-Voltage Direct Current (HVDC) systems are being widely employed in various applications because of their numerous advantages such as bulk power transmission, efficient long-distance transmission, and flexible power-flow control. However, Line-Commutated Converter (LCC) based HVDC systems suffer from commutation failure which is a major drawback, leading to increased device stress and interruptions in transmitted power. This paper proposes a predictive control strategy, deploying a Commutation Failure Prevention Module (CFPM) to mitigate the commutation failures during AC system faults. The salient feature of the proposed strategy is that it has the ability to temporarily decrease the firing angle of thyristor valves depending on the fault intensity to ensure a sufficient commutation margin.In order to validate the performance of the proposed strategy several simulations have been conducted on CIGRE Benchmark HVDC model using PSCAD/EMTDC software. Additionally, practical performance and feasibility of the proposed strategy is evaluated through laboratory testing, using the real time Opal-RT hardware prototyping platform.Simulation and experimental results demonstrate that the proposed strategy can effectively inhibit the commutation failure or repetitive commutation failures under different fault types, fault impedances and fault initiation times.

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“…However, the criterion requires a large number of coefficients; in addition, the selection of the coefficients which varies in different actual projects influences the performance of this protection. In [15] another protection scheme is developed based on traveling wave protection.…”

Section: Introductionmentioning

confidence: 99%

A novel traveling-wave-based protection scheme for LCC-HVDC systems using Teager Energy Operator

Wang

Mirsaeidi

Kang

et al. 2018

International Journal of Electrical Power & Energy Systems

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Line Commutated Converter (LCC) based High-Voltage Direct Current (HVDC) technology has been in operation with a high level reliability and little maintenance requirements for more than thirty years. The current-source based or classical LCC-HVDC systems are being considered for buried cable transmission as well as overhead transmission. The fault analysis and protection of LCC-HVDC system is a very important aspect in terms of power system stability. This paper proposes a novel protection scheme for LCC-HVDC systems, in which

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An Improved Traveling-Wave Protection Scheme for LCC-HVDC Transmission Lines

Cited by 128 publications

References 19 publications

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

Protection Scheme of a Last Mile Active LVDC Distribution Network with Reclosing Option

A Predictive Control Strategy for Mitigation of Commutation Failure in LCC-Based HVDC Systems

A novel traveling-wave-based protection scheme for LCC-HVDC systems using Teager Energy Operator

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