Single core configurations of saturated core fault current limiter performance of laboratory test models

Economic growth with industrialization and urbanization lead to an extensive increase in power demand. It forced the utilities to add power generating facilities to cause the necessary demand-generation balance. The bulk power generating stations, mostly interconnected, with the penetration of distributed generation result in an enormous rise in the fault level of power networks. It necessitates for electrical utilities to control the fault current so that the existing switchgear can continue its services without up-gradation or replacement for reliable supply. The deployment of fault current limiter (FCL) at the distribution and transmission networks has been under investigation as a potential solution to the problem. A saturated core fault current limiter (SCFCL) technology is a smart, scalable, efficient, reliable, and commercially viable option to manage fault levels in existing and future MV/HV supply systems. This paper presents the comparative performance analysis of two single-core SCFCL topologies impressed with different core saturations. It has demonstrated that the single AC winding configuration needs more bias power for affecting the same current limiting performance with an acceptable steady-state voltage drop contribution. The fault state impedance has a transient nature, and the optimum bias selection is a critical design parameter in realizing the SCFCL applications.

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A Compound Current Limiter and Circuit Breaker

Electronics ◽

10.3390/electronics8050551 ◽

2019 ◽

Vol 8 (5) ◽

pp. 551 ◽

Cited By ~ 14

Author(s):

Amir Heidary ◽

Hamid Radmanesh ◽

Ali Bakhshi ◽

Kumars Rouzbehi ◽

Edris Pouresmaeil

Keyword(s):

Voltage Drop ◽

Circuit Breaker ◽

Experimental Results ◽

Fault Current ◽

Fault Current Limiter ◽

System A ◽

Ability To Act ◽

Compound Type ◽

In Series ◽

Current Limiter

The protection of sensitive loads against voltage drop is a concern for the power system. A fast fault current limiter and circuit breaker can be a solution for rapid voltage recovery of sensitive loads. This paper proposes a compound type of current limiter and circuit breaker (CLCB) which can limit fault current and fast break to adjust voltage sags at the protected buses. In addition, it can act as a circuit breaker to open the faulty line. The proposed CLCB is based on a series L-C resonance, which contains a resonant transformer and a series capacitor bank. Moreover, the CLCB includes two anti-parallel power electronic switches (a diode and an IGBT) connected in series with bus couplers. In order to perform an analysis of CLCB performance, the proposed structure was simulated using MATLAB. In addition, an experimental prototype was built, tested, and the experimental results were reported. Comparisons show that experimental results were in fair agreement with the simulation results and confirm CLCB’s ability to act as a fault current limiter and a circuit breaker.

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Design of a multifunction novel flexible fault current limiter for AC distribution network

PLoS ONE ◽

10.1371/journal.pone.0245956 ◽

2021 ◽

Vol 16 (4) ◽

pp. e0245956

Author(s):

Yao Liu ◽

Lin Guan ◽

Zhe Tan ◽

Kun Yang ◽

Fang Guo ◽

...

Keyword(s):

Low Voltage ◽

Voltage Drop ◽

Negative Impact ◽

Fault Current ◽

Fault Current Limiter ◽

Negative Effects ◽

Multilevel Converters ◽

Harmonic Compensation ◽

Model Control ◽

Current Limiter

Based on the separation voltage type of cascaded H bridge-modular multilevel converters (CHB-MMC) and current predictive model control (CPMC) technology, a novel flexible fault-current limiter (NFFCL) is firstly proposed for restraining the negative impact of the distribution network’s disturbance in this paper. When a disturbance occurs, the inner-loop CPMC of the multilevel converters establish the value function to offer the specific current, thus increasing the voltage deviation at both ends of the series capacitor or generating reverse harmonic compensation voltage. In that case, three single-phase MNFFCLs can be regarded as variable voltage sources to eliminate the negative effects of faults or harmonics. Owing to the multi-capacitance series structure, the maximum voltage drops of the single capacitance can be predetermined by the number of capacitors. And with the low voltage drop of single capacitance, the output current of the CHB-MMC can also be controlled within an acceptable range. Through the simulation results, the disturbance’s negative impact on the non-fault area can be eliminated almost 100%.

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Design of Capacitive Bridge Fault Current Limiter for Low-Voltage Ride-Through Capacity Enrichment of Doubly Fed Induction Generator-Based Wind Farm

Sustainability ◽

10.3390/su13126656 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6656

Author(s):

A. Padmaja ◽

Allusivala Shanmukh ◽

Siva Subrahmanyam Mendu ◽

Ramesh Devarapalli ◽

Javier Serrano González ◽

...

Keyword(s):

Wind Farm ◽

Reactive Power ◽

Low Voltage ◽

Voltage Drop ◽

Short Circuit ◽

Fault Current ◽

Fault Current Limiter ◽

Low Voltage Ride Through ◽

Current Limiter ◽

Doubly Fed

The increase in penetration of wind farms operating with doubly fed induction generators (DFIG) results in stability issues such as voltage dips and high short circuit currents in the case of faults. To overcome these issues, and to achieve reliable and sustainable power from an uncertain wind source, fault current limiters (FCL) are incorporated. This work focuses on limiting the short circuit current level and fulfilling the reactive power compensation of a DFIG wind farm using a capacitive bridge fault current limiter (CBFCL). To deliver sustainable wind power to the grid, a fuzzy-based CBFCL is designed for generating optimal reactive power to suppress the instantaneous voltage drop during the fault and in the recovery state. The performance of the proposed fuzzy-based CBFCL is presented under a fault condition to account for real-time conditions. The results show that the proposed fuzzy-based CBFCL offers a more effective solution for overcoming the low voltage ride through (LVRT) problem than a traditional controller.

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Superconductor fault current limiter effect on the performance of doubly-fed induction generators

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v19.i2.pp617-626 ◽

2020 ◽

Vol 19 (2) ◽

pp. 617

Author(s):

Farzaneh Mohammadi ◽

Mohammad Molaei

Keyword(s):

Wind Turbine ◽

Voltage Drop ◽

Fault Current ◽

Fault Current Limiter ◽

Two Phase ◽

Current Increase ◽

Induction Generators ◽

Proposed Model ◽

Current Limiter ◽

Doubly Fed

<span>Between different wind turbine-generator configurations, one of the most accepted and highly regarded structures in the industry is the wind turbine with doubly-fed induction generator. The DFIG wind turbines are very sensitive to grid disturbances especially to voltage drop during grid faults due to relatively low power of the power converters. Fault in a power system causes voltage drop, current increase in stator and rotor coils, and over voltage in the DC shin. Several control methods have been proposed so far. A model based on power electronic instruments and superconductor theory, superconductor fault current limiter (SCFCL), has been proposed in this paper to improve domain and the attenuation time of the parameters under control such as voltage, current, and speed and voltage of the DC link against various types of faults (single-phase, two-phase, and three-phase). In addition to this, in order to compare the results with convectional models (crowbar) and study the innovation of the proposed model, a simulation of the system under two-phase fault and use of crowbar method to control the fault has been conducted using MATLAB-SIMULINK and also, the performance of the proposed method has been assessed. </span>

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