A Noninvasive Technique for Fault Detection and Location

Ferreira, Kurt J; Emanuel, A.E.

doi:10.1109/tpwrd.2010.2057455

Cited by 22 publications

(12 citation statements)

References 8 publications

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“…The decision to use a sampling frequency of f s = 1.5 MHz is related to the expected precision of the method, as it depends on the sampling frequency and the propagation speed of the transmission system [3], [46]. The precision for a TW method due to sampling frequency can be calculated for the simulated system and is ∆d 440 = v440 2•fs = 98.3 m.…”

Section: Application and Settings Of The Proposed Methodsmentioning

confidence: 99%

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Fault Location in Overhead Transmission Lines Based on Magnetic Signatures and on the Extended Kalman Filter

Neto¹,

Sartori

Manassero

2021

IEEE Access

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This paper proposes a non-contact method for fault location in transmission lines, which is based on magnetic fields produced by current signals measured using magnetoresistive sensors installed only at transmission line terminals, under the phase conductors of the first transmission tower at both terminals or at the substations portals. The proposed method uses the Extended Kalman filter to process these measurements and is based on a travelling wave approach in order to perform the fault localization. This paper also describes the implementation and testing of the method, firstly introducing its overview, followed by an analysis of the magnetic fields produced by the current signals, as well as considerations on their measurement; secondly, detailing the Extended Kalman filter and the travelling wave approach; and, finally, presenting the results of the method with regards to simulations built using EMTP/ATP to evaluate its robustness under different conditions varying the fault resistance, fault inception angle, phases involved and fault location. The results indicate that the proposed method is robust and accurate.

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Section: Application and Settings Of The Proposed Methodsmentioning

confidence: 99%

“…When a disturbance is detected, the information about the disturbance instant, detected at both transmission line terminals, are sent to the operation center, where the fault distance is estimated using the traveling wave theory [3], [46]. Considering the transmission line depicted in Fig.…”

Section: ) Fault Locationmentioning

confidence: 99%

Fault Location in Overhead Transmission Lines Based on Magnetic Signatures and on the Extended Kalman Filter

Neto¹,

Sartori

Manassero

2021

IEEE Access

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“…Especially in electric power industry, it is more likely to cause accidents, or even personnel casualties due to the particularity of the industry, even if the power does not produce arc for strong arcing ability, the fault phase voltage increases, the equipment's fault phase has higher work voltage, if equipment insulation break down, the short circuit may release energy, lead to more accidents in a short time [3]. In urban and rural areas with more population, if let the grounding line run and don't make it cut off immediately, it is likely to result in serious consequences and great harm to the social and economic benefits [4]. Arc suppression coil in the small current grounding system can compensate the capacitive current of power grid, but with the development of urban and rural power grids and industry, the capacitive current is bigger and bigger, it is harder to realize completely compensated.…”

Section: The Active Protection Of the Small Current Grounding Systemmentioning

confidence: 99%

The Simulation Research in Active Grounding Protection of the Small Current Grounding System Based on Active Protection

Jingjin¹,

Wang²,

Yu³

2016

Proceedings of the 2nd International Conference on Advances in Mechanical Engineering and Industrial Informatics (AMEII 2016)

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Abstract. The small current grounding system has many problems: low ability of extinguishing arc grounding and personal sense of electric system, none security and protection ability to indirect grounding overvoltage, equipment internal fault grounding. Especially with the rapid development of urban distribution network construction, the cable line users increasing, causing the system of single-phase grounding capacitive current keeps increasing, which caused a single-phase earth fault in power grid and rapid expansion of the accident. Firstly, the small current grounding system is briefly introduced in this paper. Then according to the research on the change of steady state and transient state, line selection methods are designed for different electric parameters. Active protection method for single-phase grounding fault happens in small current grounding system is put forward. This method selects the fault line according to the difference of high frequency component amplitude of zero sequence current before and after the fault and polarity of zero sequence current after the bus initiatively grounds. Finally in order to prove the validity and effectiveness of the proposed method, simulation model is built in PSCAD/EMTDC with the overhead line using the Bergeron model. The output current of different lines is then decomposed by the wavelet transform.

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“…Traditionally, the current transformer (CT) has had a predominant role in current sensing and fault detection. However, they are not ideal as a more widespread smart grid sensor due to their intrinsic characteristics, e.g., their non-linearity, narrow bandwidth, and lack of capability for direct current (DC) measurement [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of 400 Volt High Impedance Fault With Current and Magnetic Field Measurements

Sifat

McFadden

Bailey

et al. 2021

IEEE Trans. Power Delivery

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Electrical faults, which can occur at all voltage levels in an electricity supply system, are a health and safety risk. Multi-branch distribution networks represent a significant ongoing challenge for fault detection, with the greatest challenge being high impedance fault (HIF) detection. To date, research has focused on higher voltage levels, and fault monitoring sensors have traditionally only been installed in limited locations within the higher voltage networks. The main contributions of this paper are to characterize a high impedance fault (HIF) involving a tree branch and to experimentally verify the feasibility of giant magneto-resistive (GMR) sensors, located distant from the overhead lines, for fault detection. In a purpose-built 400 V physical simulation test facility, we have collected current and magnetic field data during HIF involving a tree branch. We have identified new characteristics in the early stages of this fault type, which persist for a reasonable length of time but are only observable when suitable signal processing techniques are applied. New detection schemes will, therefore, need to be developed to detect such faults. GMR sensors were found to be suitable for observing the characteristics of HIF, validating their potential use for fault detection.

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A Noninvasive Technique for Fault Detection and Location

Cited by 22 publications

References 8 publications

Fault Location in Overhead Transmission Lines Based on Magnetic Signatures and on the Extended Kalman Filter

Fault Location in Overhead Transmission Lines Based on Magnetic Signatures and on the Extended Kalman Filter

The Simulation Research in Active Grounding Protection of the Small Current Grounding System Based on Active Protection

Characterization of 400 Volt High Impedance Fault With Current and Magnetic Field Measurements

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