Transient-fault analysis for retry techniques

1988 ◽  
Vol 37 (3) ◽  
pp. 323-330 ◽  
Author(s):  
A.M. Saleh ◽  
J.H. Patel
Keyword(s):  
Fault Analysis ◽  
Transient Fault

Transient fault analysis of CORDIC processor

2012 ◽  
Author(s):  
Ting An ◽  
Matteo Causo ◽  
Lirida Alves de Barros Naviner ◽  
Philippe Matherat
Keyword(s):  
Fault Analysis ◽  
Transient Fault

scholarly journals Modelling and Fault Current Characterization of Superconducting Cable with High Temperature Superconducting Windings and Copper Stabilizer Layer

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6646
Author(s):  
Eleni Tsotsopoulou ◽  
Adam Dyśko ◽  
Qiteng Hong ◽  
Abdelrahman Elwakeel ◽  
Mariam Elshiekh ◽  
...  
Keyword(s):  
High Temperature ◽  
Power Systems ◽  
Power System ◽  
Fault Analysis ◽  
Fault Current ◽  
Transient Fault ◽  
Continuous Increase ◽  
High Temperature Superconducting ◽  
Current Limiting ◽  
The Impact

With the high penetration of Renewable Energy Sources (RES) in power systems, the short-circuit levels have changed, creating the requirement for altering or upgrading the existing switchgear and protection schemes. In addition, the continuous increase in power (accounting both for generation and demand) has imposed, in some cases, the need for the reinforcement of existing power system assets such as feeders, transformers, and other substation equipment. To overcome these challenges, the development of superconducting devices with fault current limiting capabilities in power system applications has been proposed as a promising solution. This paper presents a power system fault analysis exercise in networks integrating Superconducting Cables (SCs). This studies utilized a validated model of SCs with second generation High Temperature Superconducting tapes (2G HTS tapes) and a parallel-connected copper stabilizer layer. The performance of the SCs during fault conditions has been tested in networks integrating both synchronous and converter-connected generation. During fault conditions, the utilization of the stabilizer layer provides an alternative path for transient fault currents, and therefore reduces heat generation and assists with the protection of the cable. The effect of the quenching phenomenon and the fault current limitation is analyzed from the perspective of both steady state and transient fault analysis. This paper also provides meaningful insights into SCs, with respect to fault current limiting features, and presents the challenges associated with the impact of SCs on power systems protection.

scholarly journals Design and performance evaluation through synchro-phasor signals for transient fault analysis in transmission lines and distributions

2017 ◽  
Vol 7 (1.2) ◽  
pp. 89
Author(s):  
M. Nithyavelam ◽  
Joseph Henry
Keyword(s):  
Fault Detection ◽  
Transmission Lines ◽  
Reference Signal ◽  
Paper Analysis ◽  
Fault Analysis ◽  
Ideal Condition ◽  
Initial State ◽  
Transient Fault ◽  
And Performance ◽  
The Given

Contemporary power supplies be obliged to offer trustworthy, superior-quality power. Hence, it is significant to facilitate the transmission line fault identification more precise, consistent and to be rectified immediately. In this paper, a unique organized interrelated structure for identifying the transient fault that occurs in transmission lines and distribution is proposed, by employing the Fast Fourier Transform (FFT). This technique utilizes synchrophasor measurements during disturbances found in transmission lines positioned in the network and compared the obtained flux phase with the reference signal that is 230V, 50Hz flux phase which is considered as the ideal condition. The obtained difference phase angle will provide the details of transients present in the given transmission lines present between the generator and the load. By employing this method, the Initial state of transient fault detection from phasor measurement as well as a Linear Regression Modelling for Transient Fault Detection also be able to be identified. This paper analysis the transient fault using synchro-phasors by comparing the existing fault detection with real-time implemented system.

scholarly journals Transient Fault Analysis in 63/20 KV Substation

2017 ◽  
Vol 10 (21) ◽  
pp. 1-7 ◽  
Author(s):  
Behrooz Taheri ◽  
Farzad Razavi ◽  
Mehdi Mohammadi Ghalesefidi ◽  
◽  
◽  
...  
Keyword(s):  
Fault Analysis ◽  
Transient Fault

scholarly journals Impact of LCC–HVDC multiterminal on generator rotor angle stability

2020 ◽  
Vol 10 (1) ◽  
pp. 22
Author(s):  
Oluwafemi Emmanuel Oni ◽  
Andrew G. Swanson ◽  
Rudiren Pillay Carpanen
Keyword(s):  
Stability Margin ◽  
Synchronous Generator ◽  
Fault Analysis ◽  
Urban Centre ◽  
Long Distance ◽  
Transient Fault ◽  
Hvdc Transmission ◽  
Rotor Angle ◽  
Rotor Angle Stability ◽  
System Stabilizer

<span>Multiterminal High Voltage Direct Current (HVDC) transmission utilizing Line Commutated Converter (LCC-HVDC) technology is on the increase in interconnecting a remote generating station to any urban centre via long distance DC lines. This Multiterminal-HVDC (MTDC) system offers a reduced right of way benefits, reduction in transmission losses, as well as robust power controllability with enhanced stability margin. However, utilizing the MTDC system in an AC network bring about a new area of associated fault analysis as well as the effect on the entire AC system during a transient fault condition. This paper analyses the fault current contribution of an MTDC system during transient fault to the rotor angle of a synchronous generator. The results show a high rotor angle swing during a transient fault and the effectiveness of fast power system stabilizer connected to the generator automatic voltage regulator in damping the system oscillations. The MTDC link improved the system performance by providing an alternative path of power transfer and quick system recovery during transient fault thus increasing the rate at which the system oscillations were damped out. This shows great improvement compared to when power was being transmitted via AC lines.</span>

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