Voltage Based Detection Method for High Impedance Fault in a Distribution System

Thomas, Mini S.; Bhaskar, Namrata; Prakash, Anupama

doi:10.1007/s40031-015-0203-7

Cited by 12 publications

(7 citation statements)

References 22 publications

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“…In Reference [24], the detection of open conductors using field sensors installed along the feeder is proposed, which would not be a cost-effective implementation. In [4,[25][26][27], techniques based on the voltage drop and feeder monitoring are used to detect specific HIFs with downed conductors; however, shunt faults were not mentioned.…”

Section: Summary Of Resultsmentioning

confidence: 99%

“…In Reference [24], downed or broken conductors were detected by monitoring the zero-sequence component of phase voltages using electric field sensors placed nearby the conductors of the primary feeder, coupled with a communication system based on carrier signals. In Reference [25], a detection method for HIF was proposed considering a positive sequence voltage drop or the percentage of negative and zero sequence voltage drops. Open conductor detectors based on voltage measurements and GSM communication are described [26,27].…”

Section: Introductionmentioning

confidence: 99%

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A Voltage-Based Approach for Series High Impedance Fault Detection and Location in Distribution Systems Using Smart Meters

et al. 2019

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High impedance faults (HIFs) have been a major concern for protecting distribution systems and public safety hazards when involving downed conductors. The deployment of smarter grids brings new technologies for smart monitoring, automation, and protection of distribution networks. This paper presents a new method for a series of HIF detection and location in primary distribution feeders, using voltage unbalance measurements collected from smart meters (SMs) installed at low-voltage end-users. The methodology was tested in MATLAB and Simulink through steady-state simulations of a typical 13.8 kV distribution system, under load unbalance and different fault scenarios. Results show that the proposed method is robust and accurate for the detection of blown fuses and broken conductors, with or without ground faults, located either at the source or the load-side. The ease of implementation in SM design, formulation of parameters, and reliable simulation results show potential real-life applications.

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Section: Summary Of Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Voltage-Based Approach for Series High Impedance Fault Detection and Location in Distribution Systems Using Smart Meters

et al. 2019

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“…In fact, HIFs mostly occur at distribution voltages and is a severe problem at lower voltages systems. However, higher voltages system such as a transmission line could be exposed to HIF, but it is less severity compared to the distribution system [15]. High impedance fault generally (HIF) occur when an energized conductor breaks and comes in contact with the ground through third-party object via a high impedance such as concrete, asphalt road, sand or tree branches [16].…”

Section: Introductionmentioning

confidence: 99%

High Impedance Fault Identification in TCSC-Compensated Power Transmission Lines

Musa¹

2021

FJES

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The conventional distance relaying scheme performs poorly under the presence of Thyristors-controlled series capacitors “TCSC”, and during the high impedance fault “HIF”. TCSC provide a variable impedance during an internal/external fault and HIF is undetectable by the conventional overcurrent relaying due to low-current amplitude with non-linear behavior. Therefore, this paper presents a new Method for identifying the high impedance fault in TCSC-compensated transmission line. It is use the square error ration of the current signals during the fault period and current signals during the safe operating period for extracting the fault. The cumulative sum is being used for enlarging the fault features and then output index is obtained in order to perform the high impedance fault. The proposed method has been tested under different fault circumstances such as multiple fault locations, and multiple fault inception time. Moreover, fault happened nearby the terminal, power flow change, and faults in the presence of noise are also being considered. The test results have shown that the proposed method is good in term of time response, and then it is more appropriate for high impedance fault in TCSC-compensated power line.

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“…Hence there is a possibility of computational error because of truncation or round-off. A method to detect high impedance fault is proposed in Thomas et al (2016). It uses source side and load side conductor breaking to identify fault.…”

Section: Introductionmentioning

confidence: 99%

Fault location using mathematical analysis and database approach

Gururajapathy

Mokhlis

Illias

2019

COMPEL

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Purpose The purpose of this paper is to identify faults in distribution systems which are unavoidable because of adverse weather conditions and unexpected accidents. Hence, quick fault location is vital for continuous power supply. However, most fault location methods depend on the stored database for locating fault. The database is created by simulation, which is time consuming. Therefore, in this work, a comprehensive fault location method to detect faulty section and fault distance from one-ended bus using limited simulated data is proposed. Design/methodology/approach The work uses voltage sag data measured at a primary substation. Support vector machine estimates the data which are not simulated. The possible faulty section is determined using matching approach and fault distance using mathematical analysis. Findings This work proposed a ranking analysis for multiple possible faulty sections, and the fault distance is calculated using Euclidean distance approach. Practical implications The research work uses Malaysian distribution system as it represents a practical distribution system with multiple branches and limited measurement at primary substation. The work requires only metering devices to identify fault which is cost effective. In addition, the distribution system is simulated using real-time PSCAD by which the capability of proposed method can be fully tested. Originality/value The paper presents a new method for fault analysis. It reduces simulation time and storage space of database. The work identifies faulty section and ranks the prior faulty section. It also identifies fault distance using a mathematical approach.

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Voltage Based Detection Method for High Impedance Fault in a Distribution System

Cited by 12 publications

References 22 publications

A Voltage-Based Approach for Series High Impedance Fault Detection and Location in Distribution Systems Using Smart Meters

A Voltage-Based Approach for Series High Impedance Fault Detection and Location in Distribution Systems Using Smart Meters

High Impedance Fault Identification in TCSC-Compensated Power Transmission Lines

Fault location using mathematical analysis and database approach

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