Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design

Yang, Jin; Fletcher, John; O’Reilly, J.

doi:10.1109/tpwrd.2010.2044813

Cited by 279 publications

(183 citation statements)

References 27 publications

(32 reference statements)

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“…This network has been designed by the authors to be representative of a dc UAV network. The network employs Voltage Source Converters (VSC) to interface generators and ac loads to the network, which utilise capacitive only filters as is often the case within multi-terminal dc networks [7,12,13,[16][17][18]. Table 1 presents the network parameters for Fig.…”

Section: Analysis Of Compact DC Network Fault Responsementioning

confidence: 99%

“…The natural response of the RLC circuit illustrated in Fig. 3 can be defined in two separate phases [17]. These are covered in the following two subsections.…”

Section: Analysis Of Capacitor Dischargementioning

confidence: 99%

“…This is a result of the presence of freewheeling diodes in parallel with the active devices within the VSC [12,16,17].…”

Section: Second Phase Characterisationmentioning

confidence: 99%

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Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Fletcher

Norman

Galloway

et al. 2011

IET Electrical Systems in Transportation

111

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This version is available at https://strathprints.strath.ac.uk/33299/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the AbstractA growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators. The characteristic behaviour of these systems under electrical fault conditions, and in particular their natural response, can produce particularly demanding protection requirements. Whilst a number of protection methods for multi-terminal dc networks have been proposed in literature, these are not universally applicable and will not meet the specific protection challenges associated with the aerospace domain. Through extensive analysis, this paper seeks to determine the operating requirements of protection systems for compact dc networks proposed for future UAV applications, with particular emphasis on dealing with the issues of capacitive discharge in these compact networks. The capability of existing multi-terminal dc network protection methods and technologies are then assessed against these criteria in order to determine their suitability for UAV applications. Recommendations for best protection practice are then proposed and key inhibiting research challenges are discussed.

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Section: Analysis Of Compact DC Network Fault Responsementioning

confidence: 99%

“…The natural response of the RLC circuit illustrated in Fig. 3 can be defined in two separate phases [17]. These are covered in the following two subsections.…”

Section: Analysis Of Capacitor Dischargementioning

confidence: 99%

See 1 more Smart Citation

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Fletcher

Norman

Galloway

et al. 2011

IET Electrical Systems in Transportation

111

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“…Generally, the wind power system ought to be protected from lightning strikes [5] and the power distribution should be kept more flexible for relay setting to accept the network configuration and operational status of a WGS [6,7]. The protection in the case of short-circuit faults of the power grid was discussed [8][9][10]; the protection against the low voltage phenomenon occurring at the instant of a short-circuit or ground fault condition of the power system is described [11,12]; the crow-bar function inside the wind power system in the case of the power grid fault was studied [13][14][15][16]; and the internal direct current (DC) protection of the wind power system was reviewed [17][18][19]. On the other hand, most existing studies presented examples of the operation of protective relays without considering the wind speed.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Solution for Operations of Overcurrent Relay in Wind Power System

Ok¹,

Lee²,

Choi

2016

Energies

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Wind power systems are being integrated increasingly into the power grid because of their large capacity and easy access to the transmission grid. The reliability of wind power plants is very important and the elimination of protective relay's malfunctions is essential to the mitigation of power quality problems due to the frequent starts and stops of high capacity wind generators. In this study, the problem of frequent false operations of the protective relays are analyzed using real data as line voltages, line currents, and wind speed. A new re-coordination of the overcurrent relay (OCR) based on the wind speed is proposed to avoid frequent operations of relays and tested for a grid-connected wind farm. This study verifies that the false actions by the OCRs that are not accompanied by actual electrical faults in the power grid or wind power system can be solved by the appropriate re-coordination of the OCR.

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“…The high voltage direct current transmission based on modular multilevel converter-hybrid current vector controller (MMC-HVDC) is one of the most promising power converter technologies, especially for transmitting offshore wind power and providing passive grids with power [1]- [3]. The control strategies and inner loop current controller critically influence the performance of MMC-HVDC under unbalanced grid voltage conditions.…”

Section: Introductionmentioning

confidence: 99%

Control Strategy of MMC-HVDC under Unbalanced Grid Voltage Conditions

Zhang¹,

Zhao²

2015

Journal of Power Electronics

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High voltage direct current transmission based on modular multilevel converter (MMC-HVDC) is one of the most promising power transmission technologies. In this study, the mathematical characteristics of MMC-HVDC are analyzed in a synchronous rotational reference frame. A hybrid current vector controller based on proportional integer plus resonant is used to uniformly control the DC and double-base frequency AC currents under unbalanced grid voltage conditions. A corresponding voltage dependent current order limiter is then designed to solve the overcurrent problems that may occur. Moreover, the circulating current sequence components are thoroughly examined and controlled using a developed circulating current suppressor. Simulation results verify the correctness and effectiveness of the proposed control schemes.

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Multiterminal DC Wind Farm Collection Grid Internal Fault Analysis and Protection Design

Cited by 279 publications

References 27 publications

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Determination of protection system requirements for DC unmanned aerial vehicle electrical power networks for enhanced capability and survivability

Analysis and Solution for Operations of Overcurrent Relay in Wind Power System

Control Strategy of MMC-HVDC under Unbalanced Grid Voltage Conditions

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