Study on the Superconductor Current Limiter in Solving the Power Grid Short-Circuit Current

2021 ◽  
Vol 3 (6) ◽  
Keyword(s):  
Short Circuit ◽  
Power Grid ◽  
Short Circuit Current ◽  
Current Limiter

scholarly journals Design and computational modeling of fault current limiter topologies

2020 ◽  
Author(s):  
Alexandre Bitencourt ◽  
Daniel H. N. Dias ◽  
Bruno W. França ◽  
Felipe Sass ◽  
Guilherme G. Sotelo
Keyword(s):  
Electric Power ◽  
Distributed Generation ◽  
Distribution System ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Economic Feasibility ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Fault Current Limiters ◽  
Current Limiter

The increase in demand for electric power and the insertion of a distributed generation led to the rise of the short-circuit current in substations. Most of these Brazilian substations were designed decades ago, because of that their equipment may not support the new short-circuit current levels. To protect the installed equipment and avoid excessive costs replacing old devices, it is possible to install Fault Current Limiters (FCLs). This document is a report from an R&D project that evaluated FCL topologies considering real parameters in simulation from used equipment, concluding that the selected FCL topologies accomplished their technical objective. However, before implementing these topologies in the distribution system, one should consider the technical and economic feasibility of using semiconductor switching devices.

Online Decision Support Index System Suite for Limiting Short Circuit Current

2013 ◽  
Vol 860-863 ◽  
pp. 1857-1861
Author(s):  
Li Wen Wang ◽  
Bi Qiang Tang ◽  
Ling Ling Pan ◽  
Fei Shi ◽  
Jun Liu
Keyword(s):  
Decision Support ◽  
Index System ◽  
Short Circuit ◽  
Power Grid ◽  
Short Circuit Current ◽  
Indicator System ◽  
Current Level ◽  
System Operation ◽  
On Line ◽  
The Index System

Topology adjustment is a main measure to limit short circuit current, but changes of power grid structure might bring deep impact on power system operation. Measures to limit short circuit current are difficult to apply online due to unable to completely evaluate its safety and feasibility. This paper presents an on-line decision support indicator system, which applied to evaluate online short circuit current level of power grid. Based on practical power grid model and typical cross-section, short circuit current level under the current and future maintenance mode is analyzed, decision support to limit short circuit current is given, and the effectiveness and feasibility of limiting measures are evaluated. Analysis results show that the index system is reasonable.

Modeling Analysis of Impedance Characteristics of Saturated Core Superconducting Fault Current Limiter

2013 ◽  
Vol 389 ◽  
pp. 1089-1095
Author(s):  
Jun Zhen Peng ◽  
Kun Nan Cao ◽  
Da Da Wang ◽  
Meng Song ◽  
Nan Nan Hu ◽  
...  
Keyword(s):  
High Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Element Analysis ◽  
Superconducting Fault Current Limiter ◽  
Saturation Properties ◽  
Modeling Analysis ◽  
Current Limiter

As one of the most applicable to high-voltage network superconducting fault current limiterSCFCL(saturated core superconducting fault current limiter) ,which use of core saturation properties can be achieved the current-limiting function without delay ,will be the most widely applied in the future,By analyzing the working principle of SCFCL,this paper use of PSCAD and finite element analysis software Ansoft to build the 500kV\/3150A grade SCFCL model and accurate calculation coil self-inductance and mutual inductance, the harmonic of each size and analyzed its Impedance characteristic on the different external parameters,The results show that SCFCL has a excellent performance for high voltage power network short-circuit current limitation, and provides important reference for design.

scholarly journals Modeling of transformer type fault current limiter in 22kv distribution power system at Ho Chi Minh City

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Đoàn Tự Do ◽  
Lê Bửu Toàn ◽  
Lê Thị Tịnh Minh
Keyword(s):  
Power System ◽  
Distribution System ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Technical Problems ◽  
High Impedance ◽  
Transformer Type ◽  
Current Limiter

Nowadays, with consecutive development of the power system, not only the scale of the grid is expanded but also many technical problems exist. One of the most important problems is the exceeding short circuit current in the power grid, this value exceeds out of the regulation’s range as well as breaking capacity of the protection devices. In this paper, a fault current limiter (FCL) device is introduced as a solution; it works as a high impedance in short circuit cases and low impedance in normally case. This paper simulates the fault current limiter transformer type in MATLAB/SIMULINK, the effect of FCLT’s parameters to short circuit reduction is given in the results. Application of FCLT in reality network also is presented with markable results of short circuit reduction in Ho Chi Minh Power Corporation‘s distribution system.

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