Development of an advanced transmission line fault location systems. I. Input transducer analysis and requirements

Lawrence, D. J.; Cabeza, L.Z.; Hochberg, Limor

doi:10.1109/61.157000

Cited by 11 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…al. [8], [9] discussed the errors involved in the measurement, the effect of parameter variation are on line model, and had field test results. However, there are some errors in fault location estimation since the authors did not utilize the parameter estimation technique to resolve the uncertainty of line parameters due to the factors such as temperature variation, asymmetry of lines, variation of power flow, etc.…”

Section: Introductionmentioning

confidence: 99%

An adaptive PMU based fault detection/location technique for transmission lines. I. Theory and algorithms

Jiang

Yang

Lin

et al. 2000

IEEE Trans. Power Delivery

301

View full text Add to dashboard Cite

An adaptive fault detection/location technique based on Phasor Measurement Unit (PMU) for an EHV/UHV transmission line is presented in this two paper set. This paper is Part I of this set. A fault detection/location index in terms of Clarke components of the synchronized voltage and current phasors is derived. The line parameter estimation algorithm is also developed to solve the uncertainty of parameters caused by aging of transmission lines. This paper also proposes a new Discrete Fourier Transform (DFT) based algorithm (termed as Smart Discrete Fourier Transform, SDFT) to eliminate system noise and measurement errors such that extremely accurate fundamental frequency components can be extracted for calculation of fault detection/location index. The EMTP was used to simulate a high voltage transmission line with faults at various locations. To simulate errors involved in measurements, Gaussian-type noise has been added to the raw output data generated by EMTP. Results have shown that the new DFT based method can extract exact phasors in the presence of frequency deviation and harmonics. The parameter estimation algorithm can also trace exact parameters very well. The accuracy of both new DFT based method and parameter estimation algorithm can achieve even up to 99.999% and 99.99% respectively, and will be presented in Part II. The accuracy of fault location estimation by the proposed technique can achieve even up to 99.9% in the performance evaluation, which is also presented in Part II. Index Terms-FaultDetection/Location Index, Discrete Fourier Transforms (DFT), Phasor Measurement Unit (PMU).

show abstract

Section: Introductionmentioning

confidence: 99%