A novel transmission line fault detection algorithm based on pilot impedance

Tong, Xiaoyang; Wen, Hao

doi:10.1016/j.epsr.2019.106062

Cited by 21 publications

(9 citation statements)

References 24 publications

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“…To evaluate the effects of the line length and capacitive current on the proposed algorithm, a 50 Hz two-machine system operating at 500 kV is tested in PSCAD/EMTDC and the parameters can be referred from Ref. [35].…”

Section: E Influence Of Outliers and Comparison Workmentioning

confidence: 99%

Waveform Similarity-Based Robust Pilot Protection for Transmission Lines

Zhang

Tong

Hong

et al. 2022

IEEE Trans. Power Delivery

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This paper proposes a robust pilot protection scheme based on waveform similarity that restricts the influence of outliers in fault line identification. By comparing two refactoring currents constructed using the time-domain sampling values of currents at the two terminals of a transmission line, a waveform similarity algorithm called the Kendall's Tau coefficient (KTC) is employed to distinguish two different datasets of a protected transmission line. A reliable fault identification is realized under different fault types, distances, and resistances. Proposed criteria that are robust against to current transformer saturation, synchronization error, and noise are proposed. The KTC is based on simply the rank order instead of the metric value and thus limits outliers to a moderate level, ensuring protection safety in cases where outliers that cannot be eliminated completely are included in the current waveforms. The simulation results demonstrate the excellent performance of the proposed robust pilot protection scheme.

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Section: E Influence Of Outliers and Comparison Workmentioning

confidence: 99%

Waveform Similarity-Based Robust Pilot Protection for Transmission Lines

Zhang

Tong

Hong

et al. 2022

IEEE Trans. Power Delivery

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“…The predicted fault-location error is found to remain far below 1%; hence, this method obviates the need to deal with CT saturation and unreliable zero-sequence parameters of the line. A novel fault detection method is proposed by Tong et al (2020) in [139] for transmission lines, based on pilot impedance method. The authors have shown that the method is insensitive to variation in fault location, fault type, fault resistance and presence of weak source.…”

Section: Correlation-based Analysis Of Fault Signalsmentioning

confidence: 99%

Transmission Line Faults in Power System and the Different Algorithms for Identification, Classification and Localization: A Brief Review of Methods

Mukherjee¹,

Kundu

Das

2021

J. Inst. Eng. India Ser. B

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Transmission lines are one of the most widely distributed engineering systems meant for transmitting bulk amount of power from one corner of a country to the farthest most in the other directions. The expansion of the lines over different terrains and geographic locations makes these most vulnerable to different kinds of atmospheric calamities which more often develops faults in line. It is imperative to remove the faulty line at the earliest to restrict undue outflow of bulk power through the faulted point as well as restore system stability earliest to resume normal power flow operation. Here lays the importance of having a robust fault identification, classification and localization algorithm which would be successfully able to drive as well as actuate the digital relaying system. Researchers have worked out several methodologies in developing improved power system protection algorithms which would be able to serve to eliminate faults immediately on occurrence of the same. A brief yet exhaustive review has been presented in this article including the several methodologies adopted by numerous researchers for developing effective fault diagnosis schemes, mentioning about the highlights as well as the shortcoming of each of the methods. This compact and effective survey of literature works would help researchers to take up appropriate techniques for different purposes of transmission line fault analysis.

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“…Many causes drive the resurgence of impedance-based techniques, the foremost of which is an industry need for quick and precise fault location on economically vital, extremely lengthy high-voltage transmission lines. Precise fault location lowers operational expenses by eliminating costly and time-consuming inspections [8]. Precise fault location speeds up line maintenance and recovery, decreasing revenue shortfall due to outages.…”

Section: Introductionmentioning

confidence: 99%

A Novel Algorithm Design for Locating Fault Distances on HV Transmission Lines

Ngwenyama¹,

Roux²,

Ngoma³

2022

Adv. sci. technol. eng. syst. j.

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The transmission network has been considered among the globe's prevalent complex systems, comprised of hundreds of electrical transmission lines and other equipment used to transmit electrical energy from one location to another. Over a decade, power engineers have worked tirelessly to ensure that the transmission network operates reliably, transmitting electrical energy from the power station to the consumers without interruption. With growing generation capacity and the recent introduction of renewable energy systems (RES) such as wind turbines and solar energy, the transmission lines are increasingly being forced to run near their design limitations and greater unpredictability on the network operational configuration. As a result, the transmission network faces greater challenges than previously. As a worst-case scenario, large-scale electrical network power outages caused by electrical faults can disrupt electricity availability for several hours, impacting millions of customers and inflicting massive economic damage. These electrical faults must be repaired before electricity is restored to consumers. This necessitates a thorough grasp of the challenge and potential remedies to assure improved power efficiency. In the present work, an expansion of preceding work, a novel algorithm for estimating faults on transmission lines is presented. Impedance-based techniques are susceptible to producing errors or incorrect predictions. The presence of faults induced from high impedance sources produces an extra impedance to the ground, which negates the impedance calculation and produces errors in the distance to the fault. This results in inaccuracies that can affect a distance-to-fault estimation by 1-15 % of the overall line length. In this work, a design of a fault detection-location element (FDLE) algorithm is proposed. This algorithm relies on the dynamics of current and voltage signals on the transmission line while deserting impedance. Comparison research is undertaken against the impedancebased techniques to validate the proposed algorithm. Finally, the proposed algorithm findings are compared to fault location estimations using an impedance-based technique. Extensive trials on a simulated transmission line prove that the proposed algorithm is responsive to faults with an error as low as 1%, reaching a precision of 98.9%.

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A novel transmission line fault detection algorithm based on pilot impedance

Cited by 21 publications

References 24 publications

Waveform Similarity-Based Robust Pilot Protection for Transmission Lines

Waveform Similarity-Based Robust Pilot Protection for Transmission Lines

Transmission Line Faults in Power System and the Different Algorithms for Identification, Classification and Localization: A Brief Review of Methods

A Novel Algorithm Design for Locating Fault Distances on HV Transmission Lines

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