A nitrogen gas cooled, hybrid, high temperature superconducting fault current limiter

Steurer, M.; Brechna, H.; Fröhlich, K.

doi:10.1109/77.828362

Cited by 29 publications

(8 citation statements)

References 6 publications

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“…There is a global secret pool G={K i :0≤ i ≤W -1}, and every node A i randomly selects a different key to store. In addition, we pre-assign each node a random data µ i and a one-way function £ which has the features of one-way and irreversible, i.e., for a given input parameter a, it is easy to calculate £(a)=b, but it is impossible to introduce a from b [15].…”

Section: B Deployment and Bootstrappingmentioning

confidence: 99%

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A Mac And One-Way Function Based Filtering Scheme

Jing-Guo

Luo

Liu

2015

International Journal on Smart Sensing and Intelligent Systems

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In optical sensor networks, the adversary can inject false reports and old packets, both of which can cause false alarms and drain out the limited energy of the network. Existing security mechanisms can detect and filter out only false reports but not the old packets during forwarding. Furthermore, they cannot resist cooperative attacks. A MAC and one-way function based Filtering Scheme (MOFS) was presented. Each node distributes its key and initial hash value to some other nodes after deployment. A data report must carry the MACs and fresh hash values from t detecting nodes. The forwarding nodes check the logicality of the relative position of the detecting nodes carried in the report, the correctness of the MACs and hash values, and the freshness of these hash values. Analysis and simulation results show that MOFS can not only filter false reports and old packets simultaneously, but also performs well on compromise toleration.

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Section: B Deployment and Bootstrappingmentioning

confidence: 99%

“…In recent years, some researches focused on preventing such false data and replayed data injections [4][5][6][7][8][9][10][11][12][13][14][15]. The feature of them is to attach t MACs (Message Authentication Codes) or time stamp to each report, and rely on intermediate nodes to verify the correctness.…”

Section: Introductionmentioning

confidence: 99%

A Mac And One-Way Function Based Filtering Scheme

Jing-Guo

Luo

Liu

2015

International Journal on Smart Sensing and Intelligent Systems

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“…Hybrid fault current limiters were developed in the year of 2000 which combines superconducting fault current limiters and solid state fault current limiters. This hybrid type consists of superconductors that are used as a delayed reacting resistive limiting element which is done in parallel with the fast acting load switch [25]. In this case, superconductors carry the fault current only under switching and therefore the total loss of the system is comparatively less than other conventional SFCL.…”

Section: Hybrid Fault Current Limitersmentioning

confidence: 99%

A Review on Development and Operational Strategy of Fault Current Limiters

Priyadharshna

Venkatesan

2015

TIJEE

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<p>Distributed Generation (DG) plays a major role in existing power system. When such distributed generation system is interconnected with micro-grid improves voltage profile, power quality but at the same time results in fault conditions. Among various faults occurring in the power system, short circuit faults are the most predominant case. This results in the increase in flow of the fault current in the line. Also the equipments installed in such a line get damaged internally due to flow of excess fault current. Therefore in order to improve the transient conditions and limit the fault current to a manageable level, a device called Fault Current Limiters (FCLs) are being used in recent trend. This paper reviews about various fault current limiters, their development, characteristics and operating performance in the system. It gives a detailed knowledge about various operations performed by fault current limiters that is compared with other conventional techniques.</p>

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“…Issues surrounding this approach include the cost of superconductor material, requiring cooling equipment such as liquid nitrogen. HTS temperature should be greatly decreased to the extent that no resistance appears in the line under normal conditions [13].…”

Section: Introductionmentioning

confidence: 99%

Design of DC‐side fault current limiter for MMC‐HVDC systems: Safety of the MMC along with frequency stability

Pirhadi

Bina

2020

IET Generation Trans & Dist

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A high voltage direct current system based on the modular multi‐level converter (MMC‐HVDC) is introduced as a suitable device for transmission of bulk powers over long distances. A pole‐to‐pole DC‐side fault is a significant challenge for the MMC‐HVDC system. Three main problems are the appearance of voltage spikes following a fast DC fault current break up, frequency instability due to insufficient inertia (networks such as renewable energy‐based systems) and destruction of anti‐parallel diodes within the MMC due to the high fault current. This study proposes a novel method for limiting DC fault current, improving isolation of the three‐phase AC system from the DC‐side. The suggested design employs high power resistors as virtual load such that continuity in active power flow will be kept on. Further, this prevents frequency deviation from exceeding the allowable limits. Also, transient over‐voltages will be limited which are coming from stray inductances linked with electromagnetic effects of fault current level. Simulations and design practical issues have verified the validity of the proposal by using MATLAB/Simulink.

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A nitrogen gas cooled, hybrid, high temperature superconducting fault current limiter

Cited by 29 publications

References 6 publications

A Mac And One-Way Function Based Filtering Scheme

A Mac And One-Way Function Based Filtering Scheme

A Review on Development and Operational Strategy of Fault Current Limiters

Design of DC‐side fault current limiter for MMC‐HVDC systems: Safety of the MMC along with frequency stability

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