High-Impedance Transformer Parameter Determination Method for Limiting Short-Circuit Current of Power System

Li, Yuze; Liu, Bingchen; Zhu, Yingwei; Hou, Jiansheng; Liu, Ran; Guo, Lingqing

doi:10.1109/icems.2019.8921810

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…References [1,2] introduce what the basic definition and calculation method of short-circuit current. As for these references [3][4][5][6][7][8][9] are only as reference. The algorithm in [10] is the same as this paper but the difference of the implement method is implemented in MATLAB application software in this paper.…”

Section: Methods Of Traditionmentioning

confidence: 99%

Advantage to Short Circuit Current of Calculation on Power System by the MVA Method

Lin

2020

AJRCoS

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The short circuit current of the equipment must be carefully calculated. If it is not effective to isolate the fault point, while the system is abnormal. That will leads to prolonged fault time and the instability of power system. The calculation process is very so complicated that must to establish any capacity of equipment on system. This article will introduce method of the traditional algorithm beginning. Next, to establish the basic principles of simplified procedures such as the capacity of two parallel devices are considered as a series method (plus), but the capacity of two series devices are considered as a parallel method to calculate. Finally, to calculate the fault short-circuits current based on the actual equipment capacity on the power system. Another technique is to transform the structure of transmission line from △ to Y so that it easy to simplify for calculation. It is proved to be a simple and easy to understand what method for short circuit fault current of calculation. The method can provide accurate and effective calculation of system short circuit capacity and current at each equipment point, so that designer can make appropriate specifications in design and procurement to avoid wasteful investment.

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Section: Methods Of Traditionmentioning

confidence: 99%

Advantage to Short Circuit Current of Calculation on Power System by the MVA Method

Lin

2020

AJRCoS

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“…Conversely, the use of high‐impedance transformers [9] and current limiter reactors (CLRs) [10, 11] are recognised as equipment‐based protection measures. The CLRs are characterised as passive equipment since they exhibit a fixed/constant impedance in both faulty and normal operating conditions.…”

Section: Introductionmentioning

confidence: 99%

A novel air core electromagnetic fault current limiter with rotational motion

Fazljoo

Aliabad

Amiri

2023

IET Electric Power Appl

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The authors deal with design and analysis of an air‐core electromagnetic fault current limiter (FCL) with rotary motion. The proposed device is characterised by a simple structure, fast operating speed and reversible operation. It consists of two movable concentric air core spherical reactor rings (i.e. inner and outer rings) with variable mutual angular displacement. At normal condition, reactors are approximately aligned, and subsequently, the effective inductance/impedance of the equipment and the respective voltage drop are low. At faulty conditions, the short circuit current exerts a repulsive rotary electromagnetic torque on the reactors, which results in a fast and steady increase of the reactors angular displacement. During this process, the effective inductance of the equipment rapidly rises up to a level that effectively limits the short circuit current. To determine the effectiveness of the proposed topology in limiting the network's fault current, the inductance profile of the proposed rotary FCL and the respective fault current characteristic are compared with similar case studies (a) with linear FCL and (b) without FCL. The analysis is carried out via a finite element (FE) and supported via analytical and theoretical discussion. Finally, a down‐scale prototype of the proposed FCL was built and tested to verify the functionality of the device in the lab environment.

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Study on Single Bus Separation Mode and In-out Line Arrangement Based on Short Circuit Current Optimization

Wang

Qiao

et al. 2021

2021 IEEE 4th International Electrical and Energy Conference (CIEEC)

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High-Impedance Transformer Parameter Determination Method for Limiting Short-Circuit Current of Power System

Cited by 7 publications

References 15 publications

Advantage to Short Circuit Current of Calculation on Power System by the MVA Method

Advantage to Short Circuit Current of Calculation on Power System by the MVA Method

A novel air core electromagnetic fault current limiter with rotational motion

Study on Single Bus Separation Mode and In-out Line Arrangement Based on Short Circuit Current Optimization

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