Protection strategy for undersea MTDC grids

Descloux, J.; Raison, Bertrand; Curis, Jean-Baptiste

doi:10.1109/ptc.2013.6652286

Cited by 40 publications

(34 citation statements)

References 1 publication

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“…The main protection algorithm has been proved to be selective in [18]. It makes it possible to detect a fault occurring on a cable and to send a tripping order to DC circuit breakers of each end of the faulted link.…”

Section: Protection Scheme For Identifying the Faulted Line Into mentioning

confidence: 99%

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Fault location in multi-terminal HVDC networks based on Electromagnetic Time Reversal with limited time reversal window

Razzaghi

Paolone

Rachidi

et al. 2014

2014 Power Systems Computation Conference

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Abstract-This paper aims at proving the application of the fault location method based on the Electromagnetic Time Reversal (EMTR) to multi-terminal HVDC (MTDC) networks. In particular, the paper integrates the EMTR fault location technique with the protection scheme recently proposed within the EU project TWENTIES. Further, in view of the peculiarity of the fast protection schemes required by HVDC applications, the paper discusses the performances of the EMTR-based fault location technique by using limited time-windows over which the fault-generated electromagnetic transients are time-reversed. The paper also discusses the advantage of the EMTR fault location related to the use of a single observation point to the case of MTDC grids. Indeed, such a peculiarity may represent a major advantage avoiding necessary time synchronization between the MTDC-fault recording stations and might represents, also, a backup protection system. The performances of the proposed method are validated by numerical simulations obtained using the EMTP-RV simulation environment where electromagnetic fault-transients are reproduced with reference to the MTDC benchmark network of the project TWENTIES.

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Section: Protection Scheme For Identifying the Faulted Line Into mentioning

confidence: 99%

“…First, the faulted DC line is identified using the approach proposed in [18]. Then, this information is used in a second step to select a specific observation point at which, the recorded electromagnetic transients, are time-reversed and back-injected into an emulated network model for different guessed fault locations.…”

Section: Introductionmentioning

confidence: 99%

Fault location in multi-terminal HVDC networks based on Electromagnetic Time Reversal with limited time reversal window

Razzaghi

Paolone

Rachidi

et al. 2014

2014 Power Systems Computation Conference

Self Cite

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“…If the current difference is more than a threshold, it is interpreted as a fault and trip commands are sent to the solid-state switches located at both ends of the faulty section. References [112,113] suggested that a telecommunication link should be used between the protective devices in the both sides of each DC feeder. Then, each differential relay, which is installed on one side of the line, will only send the trip command to its corresponding CB.…”

Section: Differential Protectionmentioning

confidence: 99%

Protection of AC and DC distribution systems Embedding distributed energy resources: A comparative review and analysis

Monadi

Zamani

Candela

et al. 2015

Renewable and Sustainable Energy Reviews

126

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“…The main difficulty is the protection selectivity in large grids and within very short time period of 2-5ms. Some promising DC grid protection approaches have been reported [4]- [6]. The differential protection method in [4] is accurate but requires several milliseconds communication delay between DC CBs and perhaps more in case of long DC cables.…”

Section: Introductionmentioning

confidence: 99%

“…Some promising DC grid protection approaches have been reported [4]- [6]. The differential protection method in [4] is accurate but requires several milliseconds communication delay between DC CBs and perhaps more in case of long DC cables. Any delay in fault clearing implies that fault current continues to increase.…”

Section: Introductionmentioning

confidence: 99%

Offshore DC grids as an interconnection of radial systems: Protection and control aspects

Jovcic

Taherbaneh

Taisne

et al. 2015

2015 IEEE Power &Amp; Energy Society General Meeting

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Abstract-This article presents a topology for DC grids which enables very robust DC fault protection with moderate costs, good operating flexibility and simple controls. It is postulated that radial DC systems are best suited for limited-size local DC grids. Radial topology enables robust and fast protection selectivity using only local signals and exploiting the advantages of hybrid DC circuit breakers. To enable flexible expansion options to national/international systems, it is suggested to interconnect star points of radial systems using DC/DC converters. DC/DC converters enable inherent isolation of DC faults and provide firewall between radial DC grids. Each interconnecting cable is protected by a DC/DC at one end and a hybrid Circuit Breaker at the other end. The control options for DC/DC converter and the radial grids are analysed. A detailed simulation model of 6 terminal DC grid with 2-star points is presented. The PSCAD simulation results confirm DC fault isolation and good control performance of the proposed topology for a range of DC fault contingencies.

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Protection strategy for undersea MTDC grids

Cited by 40 publications

References 1 publication

Fault location in multi-terminal HVDC networks based on Electromagnetic Time Reversal with limited time reversal window

Fault location in multi-terminal HVDC networks based on Electromagnetic Time Reversal with limited time reversal window

Protection of AC and DC distribution systems Embedding distributed energy resources: A comparative review and analysis

Offshore DC grids as an interconnection of radial systems: Protection and control aspects

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