Applications of Superconducting Fault Current Limiters in Electric Power Transmission Systems

Kovalsky, L.; Yuan, Xiong; Tekletsadik, K.; Keri, A.J.F.; Böck, J.; Breuer, F.

doi:10.1109/tasc.2005.849471

Cited by 129 publications

(49 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generator tripping has been widely employed on the transmission level and is recognized as the most effective way of resolving transient stability issues and sometimes to prevent overloadings [24]. Sequential breaker tripping schemes are used in transmission networks in order to limit fault currents and ensure reliable breaker operation [25]. The trip function already exists as anti-islanding/overvoltage protection in most PV inverters installed to date.…”

Section: Module-level Tripping As a Curtailment Methodsmentioning

confidence: 99%

Microinverter Curtailment Strategy for Increasing Photovoltaic Penetration in Low-Voltage Networks

Gagrica

Nguyen

Kling

et al. 2015

IEEE Trans. Sustain. Energy

View full text Add to dashboard Cite

Abstract--Transition towards smart distribution networks with high penetration of photovoltaics (PV) will involve incidental generation curtailment as an alternative to grid reinforcements. Micro-inverters are taking over popularity of string inverters in residential and some commercial areas mainly due to increased energy harvest. This paper demonstrates how micro-inverters with a modified overvoltage protection scheme could provide a reliable curtailment solution and accommodate additional PV capacity. Two wide-area curtailment schemes were proposed for a typical Dutch residential feeder with densely clustered PV. Firstly, a single worst-case scenario was used to demonstrate the capabilities of the proposed curtailment schemes: the distribution network operators can optimize between various priorities such as total feeder output, economic equality between connected parties, voltage levels, voltage unbalance and curtailment execution time. Secondly, a yearly comparison was made against conventional overvoltage protection and the results show 62-100% reduction in overvoltage losses.

show abstract

Section: Module-level Tripping As a Curtailment Methodsmentioning

confidence: 99%

Microinverter Curtailment Strategy for Increasing Photovoltaic Penetration in Low-Voltage Networks

Gagrica

Nguyen

Kling

et al. 2015

IEEE Trans. Sustain. Energy

View full text Add to dashboard Cite

show abstract

“…A.3.5.3.22 Applications of superconducting fault current limiters in electric power transmission systems [169] Abstract: The introduction of new generating facilities by independent power producers and increasing load demand can result in fault-current over-duty on existing transmission system protective equipment. Conventional solutions to fault current over-duty such as major substation upgrades, splitting existing substation busses or multiple circuit breaker upgrades could be very expensive and require undesirable extended outages and result in lower power system reliability.…”

Section: Commercial Devicesmentioning

confidence: 99%

Fault Locating, Prediction and Protection (FLPPS)

Yinger¹,

Venkata²,

Centeno³

2010

View full text Add to dashboard Cite

“…Series reactors and solid state fault current limiters are also common strategies for reducing the fault levels in existing power grids, although these devices cause a noticeable voltage drop and therefore considerable power losses during the normal operation of the network [4,5]. However, under normal operational conditions of the power network, novel technologies such as superconducting fault current limiters (SFCLs), with their unique property of nearly zero electrical resistance, offer the possibility to improve voltage stability, power supply, quality, and overall efficiency of the electric grid without the need for constructing additional substations or adding new infrastructure [6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Optimal location and minimum number of superconducting fault current limiters for the protection of power grids

Zhang

Geng

Coombs

2017

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

This paper presents a novel method to determine the optimal strategy for the allocation of multiple resistive superconducting fault current limiters (SFCLs) aiming to improve the overall protection of standard power grids. The presented approach allows for the straightforward determination of the optimal resistance of the SFCL, accounting for short circuit events occurring at different locations, by modelling the electro-thermal properties of the SFCL via a temperature dependent E-J power law. This material law, based on previous experimental evidence, allows for the introduction of flux pinning, flux creep, and flux flow properties of the superconducting material within a minimum level of complexity. Thereby, we have observed a distinctive kink pattern in the current limiting profiles of the SFCLs, from which no further reduction of the first peak of the fault current is achieved when a greater resistance is considered, allowing a univocal determination of the optimum SFCL resistance. This peculiarity is not observed when the model for the quench properties of the SFCL is simplified towards an exponential resistance, although the last can be used as an auxiliary process for addressing the first guess on the resistance value required for a specific strategy, as it demands less computing time. We have also determined that for many of the cases studied, i.e, for the combinations between one or more SFCLs installed at different locations, and those subjected to fault events located at different points in the network, the recovery time of the superconducting properties of at least one of the SFCLs can last for more than five minutes, constraining the feasibility of a large-scale deployment of this technology. However, by assuming that the practical operation of the SFCL is assisted by the automatic operation of a bypass switch when the SC material is fully quenched, we have determined that the optimal strategy for the overall protection of power grids of standard topology requires a maximum of three SFCLs, with recovery times of less than a few seconds. This information is of remarkable value for power system operators, as it can establish a maximum investment threshold which ultimately can facilitate making decisions regarding the deployment of SFCL technologies.

show abstract

Applications of Superconducting Fault Current Limiters in Electric Power Transmission Systems

Cited by 129 publications

References 5 publications

Microinverter Curtailment Strategy for Increasing Photovoltaic Penetration in Low-Voltage Networks

Microinverter Curtailment Strategy for Increasing Photovoltaic Penetration in Low-Voltage Networks

Fault Locating, Prediction and Protection (FLPPS)

Optimal location and minimum number of superconducting fault current limiters for the protection of power grids

Contact Info

Product

Resources

About