Safe operation improvement of an electrical power system by superconducting fault current limiters

Chai, Yi; Jiang, Congmei; Zhang, Ke; Xu, Shuiqing

doi:10.1109/ccdc.2016.7531187

Cited by 2 publications

(4 citation statements)

References 10 publications

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“…where E G -system EMF (electromotive force); G Z -internal resistance of the system; ( ) Z N -resistance from the short circuit point to the nearest ground wire; ( ) Z l -resistance of the line section from its beginning to the short circuit location; (3) sc ( ) I l , (2) sc ( ) I l , (1) sc ( ) I l -initial effective values of shortcircuit currents at three-phase, two-phase and one-phase short circuits, respectively.…”

Section: B the Second Methods For The Determination Of The Coordinatementioning

confidence: 99%

“…TO LOCATE A SHORT CIRCUIT POINT Thus, for each of the enumerated cases, knowing line parameters we can theoretically establish a relationship between the short-circuit currents and length (3) sc ( ) I l , (2) sc ( ) I l , (1) sc ( ) I l , and store the results in the memory in a tabular form.…”

Section: The Architecture Of the Network Fragment Usedmentioning

confidence: 99%

“…At present, some measures are taken to meet the requirements on the reliability and quality of power supply. A serious problem facing electric power systems is the failure of overhead and cable transmission lines [1], [2], [3], [4]. Short circuits represent a particular danger.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

Suslov

Solonina

2017

PEE

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-One of the challenges facing electric power systems is the failure of overhead and cable transmission lines. Short circuits pose a particular danger. This fact requires increasingly faster information acquisition and processing for estimating a system state and making preventive measures to ensure sustainable power supply with minimum loss of time. This paper is devoted to the problem of on-line determination of the coordinates of a short circuit point in the transmission line. The suggested methods are based on the assumption that the short circuit current at the transmission line beginning depends on the distance to the short circuit point.

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Section: B the Second Methods For The Determination Of The Coordinatementioning

confidence: 99%

Section: The Architecture Of the Network Fragment Usedmentioning

confidence: 99%

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On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

Suslov

Solonina

2017

PEE

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“…With the rapid development of power system, fault current levels continuously increase, and when a circuit breaker cannot interrupt a fault current, it will directly affect the safe and stable operation of the system [1]- [3]. To reduce the influence of fault currents on power system, a parallel-type circuit breaker based on a high-coupling split reactor was proposed in [4] and [5], which increased the breaking capacity.…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of a High-Coupling Split Reactor in a Parallel-Type Circuit Breaker

et al. 2019

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In this paper, in accordance with the breaker requirements of a parallel-type circuit breaker based on a high-coupling split reactor, the structure of a coupling reactor is proposed, and the influences of the inner radius, encapsulation height, air ducts width, and encapsulation number of the reactor on coupling factor is analyzed. The reactor design is optimized to minimize metal conductor usage, and the initial design parameters of the coupling reactor are selected based on equal height and heat flux of the coaxial encapsulations. Meanwhile, combined thermal and electromagnetic optimization method and heat load optimization are adopted considering a single-arm limiting current and two-arm flow current working conditions. The optimization results show that the metal conductor usage of the coupling reactor is only 63% compared to a design based on the initial design parameters, and the correctness of the optimization is verified by simulation results. INDEX TERMS Parallel-type circuit breaker, coupling reactor, metal conductor usage, combined thermal and electromagnetic optimization, heat load optimization.

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Safe operation improvement of an electrical power system by superconducting fault current limiters

Cited by 2 publications

References 10 publications

On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

On-Line Determination of the Coordinates of a Short Circuit Point in Transmission Lines

Optimization Design of a High-Coupling Split Reactor in a Parallel-Type Circuit Breaker

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