Unsynchronized Measurements Based Fault Location Algorithm for Active Distribution Systems Without Requiring Source Impedances

Apostolopoulos, Christos; Arsoniadis, Charalampos G.; Georgilakis, Pavlos S.; Nikolaidis, Vassilis C.

doi:10.1109/tpwrd.2021.3103870

Cited by 12 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The accurate fault location method of MVDN based on the time-domain transient component is mainly derived and summarized using fault analysis. Then, according to the location principle, a location equation that directly contains the fault distance parameter or can indirectly reflect the fault distance information is constructed [7]. The appropriate mathematical method is selected to solve the equation and locate the fault location [8].…”

Section: Introductionmentioning

confidence: 99%

Accurate Fault Location Method Based on Time-Domain Information Estimation for Medium-Voltage Distribution Network

Sun,

Chen,

Han

et al. 2023

Electronics

View full text Add to dashboard Cite

The sampling rate of the wide-area synchronous phasor measuring device (D-PMU) in the distribution network is insufficient, and the localization sensitivity of the traditional localization method based on the time-domain Bergeron equation in the distribution network is insufficient. In this paper, an accurate location method of the distribution line grounding fault based on the time-domain’ synchronous information calculation is proposed to solve the problem of limited location accuracy caused by a low sampling rate and the insufficient sensitivity of traditional methods. The method preprocesses the measurement data through low-frequency time-domain signal reconstruction and cubic spline interpolation. The fault current’s different location criterion is constructed by using the voltage and current constraints at the fault point. By calculating the fault current difference at a limited number of calculated points, the accurate fault location under a low sampling rate is realized, which is beneficial to the rapid maintenance of faults and the shortening of the power outage time.

show abstract

Section: Introductionmentioning

confidence: 99%

Accurate Fault Location Method Based on Time-Domain Information Estimation for Medium-Voltage Distribution Network

Sun,

Chen,

Han

et al. 2023

Electronics

View full text Add to dashboard Cite

show abstract

“…According to the different principles, the current fault location methods mainly include the impedance method and the travelling wave method. The impedance method establishes a location equation based on line parameters and measurement information and determines the exact distance of the fault by solving the equation [10]. Based on the distributed parameter model of the MVDN, Reference [11] constructs the location function with the current measurement information before and after the fault, which further improves the location accuracy.…”

Section: Introductionmentioning

confidence: 99%

A Fault Location Method for Medium Voltage Distribution Network Based on Ground Fault Transfer Device

Sun,

Ma,

Wei

et al. 2023

Electronics

View full text Add to dashboard Cite

The arc suppression device based on ground fault transfer (GFT) has been preliminarily applied in the medium voltage distribution network (MVDN). An accurate travelling wave (TW) fault location method is proposed to extend the use of the ground fault transfer device. D-PMU is used as a travelling wave detection tool to record the transient voltage travelling waves of fault grounding and bus active grounding during arc suppression. Then, the faulty section is identified through the time difference of travelling wave arrival at the upstream and downstream measurement points. On this basis, the fault location equations of the arrival time and distance of the upstream travelling wave are established, and an accurate fault location method based on the arrival time difference of the travelling wave is proposed. The simulation model is established by PSCAD/EMTDC, and the results show that the method has high location accuracy, and the absolute error is less than 30 m. It is not affected by the TW velocity, the fault conditions, or the distributed power sources.

show abstract

“…Fault location is of great importance to power transmission line maintenance, power supply reliability and stable power system operation. Frequency domain methods are commonly applied in fault location due to low requirement for sampling frequency, simple algorithm and ample stability [1][2][3][4][5][6]. However, the accuracy of line parameters and phasor estimation is crucial to fault location.…”

Section: Introductionmentioning

confidence: 99%

A robust and accurate discrete Fourier transform‐based phasor estimation method for frequency domain fault location of power transmission lines

Liang

Zhang

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

Frequency domain methods had been commonly used in power transmission line fault location. To improve the accuracy of frequency domain fault location methods, this paper studies a robust and accurate discrete Fourier transform (DFT)‐based phasor estimation method. First, this paper analyses the deviation characteristics of DFT output phasors caused by decaying DC components with data window sliding. Based on these characteristics, this paper employs rotation factor computation to construct linear equations for the purpose of estimating the accurate fundamental frequency phasor during fault transient process. In this way, the accurate fundamental frequency phasor can be calculated by a two‐step linear operation. Furthermore, to eliminate the effect of off‐nominal frequency, the proposed method adjusts frequency deviation by using interpolation method. To further enhance the robustness for frequency domain fault location, the PauTa criterion is used to exclude the anomalous equations in the phasor estimation process. Finally, electro‐magnetic fault simulation is used to evaluate the proposed method. The test results demonstrate that the proposed method improve the accuracy of fault location during the fault transient process.

show abstract

Unsynchronized Measurements Based Fault Location Algorithm for Active Distribution Systems Without Requiring Source Impedances

Cited by 12 publications

References 23 publications

Accurate Fault Location Method Based on Time-Domain Information Estimation for Medium-Voltage Distribution Network

Accurate Fault Location Method Based on Time-Domain Information Estimation for Medium-Voltage Distribution Network

A Fault Location Method for Medium Voltage Distribution Network Based on Ground Fault Transfer Device

A robust and accurate discrete Fourier transform‐based phasor estimation method for frequency domain fault location of power transmission lines

Contact Info

Product

Resources

About