Satellites for power system applications

Cory, B.J.; Gale, P.

doi:10.1049/pe:19930050

Cited by 18 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Global Positioning System (GPS) is most often to use with data-acquisition system (DAQ) to provide solution for common time reference for power system protection devices [17]. This arrangement provides the time-stamping of data with an accuracy better than ±1 µs [18], [19]. It equivalents, for 60-Hz power systems, to local and remote data synchronism errors of about ±0.0216˚, which yield the traveling-wave-based algorithms for the fault-location errors of the order of 300 m only [19].…”

Section: Introductionmentioning

confidence: 99%

Fault Distance Estimation Method for Two-Terminal Transmission Line

Gupta¹

2020

IJETER

View full text Add to dashboard Cite

A new fault distance estimation method is proposed for unbalanced earth faults based on Initial Traveling Wavefronts (ITWs) in aerial mode and earth mode of travelling wave. The aerial and earth mode of travelling waves are calculated using phase-mode transformation theory. Thereafter, the time of Wavelet Transform Modulus Maxima (WTMM) of aerial mode component and earth mode is analyzed for fault distance estimation. This algorithm does not require synchronized measurement and pre-estimation of transmission line parameters. The efficacy of the algorithm is verified by generating diverse fault cases using PSCAD/EMTDC software. Results shown in paper shows its capability of accurate fault distance estimation under comprehensive variation in type of fault, line length, fault inception angle, fault resistance and source impedance. Subsequently, its accuracy remains almost constant considering errors in line parameters.

show abstract

Section: Introductionmentioning

confidence: 99%

Fault Distance Estimation Method for Two-Terminal Transmission Line

Gupta¹

2020

IJETER

View full text Add to dashboard Cite

show abstract

“…The development in high‐voltage and current optical transducers technology together with high‐frequency transient recorders have overcome the problems encountered in recording of high‐frequency transients of fault‐generated travelling wave and made travelling wave‐based methods practical . To provide time stamping of signals for fault location in power system, some solutions for time synchronization have been reported in the recent past, among which, the global positioning system (GPS) is the most widely used …”

Section: Introductionmentioning

confidence: 99%

Fault location in multilateral distribution network with electric vehicle charging load

Kumar¹,

Saxena

2019

Energy Storage

View full text Add to dashboard Cite

In a multilateral distribution network, faults at different locations can generate the same voltage and current at the substation; hence, the calculated fault location can correspond to several places in the network. To avoid this major problem, a two‐terminal travelling wave‐based fault location method is presented in this article, which at first identifies the faulted lateral in the distribution network and then estimates the exact fault location. The proposed fault location scheme uses wavelet energy entropy of the recorded three‐phase current signals and the magnitude of ground mode component wavelet modulus maxima (WMM) for fault detection and fault type identification in the network. After that, the faulted lateral identification followed by the exact fault location is performed using the aerial mode component WMM of the fault‐generated current transients. Since the integration of electric vehicle (EV) charging load is increasing day by day to the distribution network, the performance of the proposed algorithm is tested with EV charging load along with distributed generation integrated into the distribution network. Modeling and simulation of the distribution network and EV load are performed in MATLAB/SIMULINK. The simulation results show that the proposed method can accurately locate fault under different operating conditions.

show abstract

“…Unfortunately, several time synchronisation accidents have been reported in the literature these years [12]. Furthermore, the possibility of losing satellite signal should not be ignored, these limitations and high equipment costs all limit the application of double‐terminal fault‐location method.…”

Section: Introductionmentioning

confidence: 99%