New coordination approach to minimize the number of re-adjusted relays when adding DGs in interconnected power systems with a minimum value of fault current limiter

2017 ◽  
Vol 85 ◽  
pp. 32-41 ◽  
Author(s):  
Doaa Khalil Ibrahim ◽  
Essam El Din Abo El Zahab ◽  
Saadoun Abd El Aziz Mostafa
Keyword(s):  
Power Systems ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Minimum Value ◽  
Interconnected Power Systems ◽  
Current Limiter

Fault Current Limiter Based on Series Voltage Source Inverter

2013 ◽  
Vol 705 ◽  
pp. 378-385 ◽  
Author(s):  
Hua Li ◽  
Dong Ming Han ◽  
Ling Quan Zeng
Keyword(s):  
Power Systems ◽  
Reactive Power ◽  
Voltage Source ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Voltage Source Inverter ◽  
Operating Characteristics ◽  
Voltage Level ◽  
New Type ◽  
Current Limiter

The installation of Fault Current Limiter (FCL) brings many advantages to power systems. Therefore, in recent years, many kinds of FCL have been developed. This paper describes a new type of FCL, it’s composed by a tandem resistance and a self rectified voltage source inverter, connected to the distribution line by a coupling transformer. It realizes the limiting by controlling the reactive power. Its prominent features are: simple configuration, lower voltage level. This paper aims to evaluate the operating characteristics of such FCL in both simulation and experimental research ways.

scholarly journals Application of Superconducting Fault Current Limiter (SFCL) in Power Systems: A Review

2018 ◽  
Vol 3 (7) ◽  
pp. 28 ◽  
Author(s):  
Ignatius K. Okakwu ◽  
P. E. Orukpe ◽  
E. A. Ogujor
Keyword(s):  
Power Systems ◽  
System Stability ◽  
Normal Operation ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Operational Flexibility ◽  
Superconducting Fault Current Limiter ◽  
Protective Devices ◽  
High Impedance ◽  
Current Limiter

The fault current levels of an interconnected power network have witnessed a general rise due to increase in power demand. This rise in fault current if not properly mitigated may exceed the maximum ratings of the switchgear. Many conventional protective devices such as series reactors, fuses, high impedance transformers, etc. have high cost, increased power loss and loss of power system stability, which may ultimately cause lower reliability and reduced operational flexibility. Superconducting Fault Current Limiter (SFCL) is a flexible alternative to the use of conventional protective devices, due to its effective ways of reducing fault current within the first cycle of fault current, reduced weight and zero impedance during normal operation. This paper reviews various concepts of SFCLs and its applications in power systems.

scholarly journals Fault Analyzer Circuit Analysis at the Load Line in Hybrid Solar/Wind System

2020 ◽  
Vol 6 (11) ◽  
pp. 28-38
Author(s):  
Pankaj Mohan Nautiyal ◽  
Mr. Rohit Kumar Verma
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Short Interval ◽  
Operating Time ◽  
Test System ◽  
Operating Conditions ◽  
Fault Current ◽  
Fault Current Limiter ◽  
Load Line ◽  
Current Limiter

Electric power is generated, transmitted, and distributed via large interconnected power systems. The generation of electric power takes place in a power plant. The main objective reduces the operating time of fault current removal from the load line and senses the fault current quickly to overcome its effects. The system is to be made effective and efficient while dealing with the fault situation, fault removal, and restoration of the normal operating conditions at the loading points. The results conclude the effectiveness of the proposed T-ACO-based Optimization control for the operation of the relay in accordance with the fault current limiter and analyzer circuit. The second model of the hybrid system concludes that the system having fault current limiter and analyzer circuit reduces and fault current rise and prevents the voltage from dropping to zero even if no AI-based technique is used and the operating time remains the same. The AI-based techniques further reduce the operating time also thereby making the system more efficient as the voltage is restored to its normal value in a short interval of time when the test system is simulated for 1 second in a MATLAB/SIMULINK environment.

scholarly journals A Multi-Inductor H Bridge Fault Current Limiter

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 795 ◽  
Author(s):  
Amir Heidary ◽  
Hamid Radmanesh ◽  
Ali Moghim ◽  
Kamran Ghorbanyan ◽  
Kumars Rouzbehi ◽  
...  
Keyword(s):  
Power Systems ◽  
Power Transmission ◽  
Fault Current ◽  
Power Electronic ◽  
Fault Current Limiter ◽  
Transmission Grid ◽  
Distributed Power Generation ◽  
Current Limiting ◽  
Bridge Type ◽  
Current Limiter

Current power systems will suffer from increasing pressure as a result of an upsurge in demand and will experience an ever-growing penetration of distributed power generation, which are factors that will contribute to a higher of incidence fault current levels. Fault current limiters (FCLs) are key power electronic devices. They are able to limit the prospective fault current without completely disconnecting in cases in which a fault occurs, for instance, in a power transmission grid. This paper proposes a new type of FCL capable of fault current limiting in two steps. In this way, the FCLs’ power electronic switches experience significantly less stress and their overall performance will significantly increase. The proposed device is essentially a controllable H bridge type fault current limiter (HBFCL) that is comprised of two variable inductances, which operate to reduce current of main switch in the first stage of current limiting. In the next step, the main switch can limit the fault current while it becomes open. Simulation studies are carried out using MATLAB and its prototype setup is built and tested. The comparison of experimental and simulation results indicates that the proposed HBFCL is a promising solution to address protection issues.

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