Detection of high-impedance faults in power distribution systems

Hou, D.

doi:10.1109/psamp.2007.4740902

Cited by 25 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Much attention is paid to the peculiarities of mathematical modelling of the electric arc in the place of damage and methods of classification of different types of damage [4,5]. In [6], methods of filtering the signals of current and voltage sensors are investigated, and attention is paid to testing them using real signals recorded by the logger at an operating substation. In [7], methods for the identification of single-phase earth faults are developed and the sensitivity of such methods under conditions of high resistance at the fault location is analyzed.…”

Section: с помощью математической модели компенсированной электрическmentioning

confidence: 99%

“…Mathematical models of electrical networks are studied, which also include models of relay protection devices [8,9]. The search for optimal parameters of mathematical methods of signal processing of primary sensors and settings for the operation of systems of protection against single-phase earth fault [6,10] is carried out. There are also known attempts to use different types of neural network-type «black box» methods to protect against single-phase earth-faulting, but in our opinion, the simpler approaches are not exhausted, the most attractive being the analysis and use of different frequency components in currents (3i 0 ) and the voltage (3u 0 ) of the zero sequence.…”

Section: с помощью математической модели компенсированной электрическmentioning

confidence: 99%

See 1 more Smart Citation

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

Syvokobylenko¹,

Лысенко²

2020

Elektroteh. elektromeh.

View full text Add to dashboard Cite

Introduction. A significant proportion of earth faults in 6-35 kV networks is a transient and short-lived process, which is followed by an electric arc. Problem. In such cases, earth-fault protection that responds to steady-state current and voltage is not able to operate properly. Also, the use of the Petersen coil to compensate for the capacitive earth fault current complicates the protection function because it significantly reduces the single phase earth fault current in steady state. Purpose. To develop selective single-phase earth faults protection algorithm using harmonic components that occur in zero-sequence currents and voltage in the transient process. Method. A mathematical model of the power supply system is applied to study the frequency components of currents and voltage of zero sequence in compensated electrical networks with phase-to-earth faults, and a mathematical model is used to test the operation of the developed protection algorithm. The results showed that, the reactive power for harmonic components of the frequency greater than 100 Hz, which are separated from the current and voltage of zero sequence in compensated electrical networks on the damaged feeder, is positive regardless of the degree of compensation of the capacitive current. That may be the basis of the principle of directional protection. Originality. Phase-to-earth fault selective protection algorithm has been developed. In that algorithm, first derivatives of currents and voltages of zero sequence are found, to reduce the influence of aperiodic components. And then, by using of the Fourier transform, a number of harmonic orthogonal components are extracted from them. Reactive power is calculated for each of frequency component and their total sum is found. If that sum excess of threshold, the relay will make a decision. The reliability of the developed protection algorithm is confirmed by the results of mathematical modeling and verification of the test sample at the laboratory stand and by means of field signals that were recorded by digital loggers at the substations. References 10, table 1, figures 6.

show abstract

Section: с помощью математической модели компенсированной электрическmentioning

confidence: 99%

Section: с помощью математической модели компенсированной электрическmentioning

confidence: 99%

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

Syvokobylenko¹,

Лысенко²

2020

Elektroteh. elektromeh.

View full text Add to dashboard Cite

show abstract

“…A commonly accepted equation, as presented in [29,30], needs only the phase-to-phase fundamental voltage magnitudes, as shown in (2) and (3). This method, initially proposed by the International Council for Large Electric Systems (CIGRE), is known as the CIGRE method and demands fewer calculations and offers the same results of (1) [31], being a good alternative to the method of symmetrical components.…”

Section: Detectionmentioning

confidence: 99%

“…Power conductors in unwanted contact with poorly conductive surfaces and tree branches are potential causes for HIFs. Also, a HIF does not need to include a path to the ground, for example, in broken conductors or when there are failures caused by dirty insulators [2,3]. High voltages in downed conductors and electric arcs associated with HIFs are major concerns for public safety and industrial installations and are a possible trigger for wildfires, which may cause legal liabilities, property damage, or human loss [3][4][5].…”

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

View full text Add to dashboard Cite

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.

show abstract

“…Downed conductors may not contact a conductive object and, therefore, have good probability of remaining energized. It's not easy to find fault [1][2][3][4][5] and at present this fault comes under open-circuit fault. This paper mainly concentrated on location detection of Downed or Broken power line Fault not touching the ground.…”

Section: Introductionmentioning

confidence: 99%

Location of Downed or Broken Power Line Fault Not Touching the Ground

Nuthalapati¹,

Sinha²

2019

EJEE

View full text Add to dashboard Cite

Faults occurred in power system are common, all these faults are detected by protective devices but faults like Downed or Broken power line Fault not touching the ground, these faults not having enough faults current to operate fault detection devices in Over Head power distribution. Till now there is no protecting devices are identified this type of fault and location of this fault. As of now identifying by only by visual sighting. The proposed solution for finding Fault location Downed or Broken power line Fault not touching the ground.

show abstract

Detection of high-impedance faults in power distribution systems

Cited by 25 publications

References 10 publications

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

Мultifrequency Protecting Method Against Earth-Faults of Phase in the Compensated Electric Networks

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

Location of Downed or Broken Power Line Fault Not Touching the Ground

Contact Info

Product

Resources

About