A novel high impedance fault detection technique in distribution systems with distributed generators

Nayak, Paresh Kumar; Sarwagya, Kumari; Biswal, Tapaswini

doi:10.1109/npsc.2016.7858855

Cited by 14 publications

(8 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study concerning a novel high impedance fault detection technique in distribution systems with distributed generators also considers PSCAD/EMTDC software used for generating data for different test cases, and the method is implemented using the MATLAB software. The magnitude of current in this study is in the range of several tens of amperes (Nayak et al, 2016). The research on high impedance fault identification and classification using a discrete wavelet transform and artificial neural networks (Hubana et al, 2018) indicates that there are no current and voltage measuring transformers used, and hence, no difficulty is faced while capturing real-time data.…”

Section: Introductionmentioning

confidence: 91%

Rigorous Mathematical Steps for Sensitivity Analysis of High Impedance Ground Fault Detection in Power Distribution Systems

Velmurugan¹,

Chattopadhayay

2020

Cogent Engineering

View full text Add to dashboard Cite

A literature survey indicated that high impedance fault (HIF) detection methods employ simulation techniques using very low voltage signals generated using software such as PSCAD, and MATLAB, among others. While software platforms are used to derive satisfactory results, small fault current signals cannot be accurately tapped from high transformation ratio current transformers owing to the dominant load currents in real power systems. Therefore, a sensitivity analysis based on a power system background is considered essential. A set of well-known power system equations are used to analyse and select a parameter to tune this sensitivity, from several available parameters, such as source, transformer, line, neutral, and earth impedance. The analysis reveals that when the detection of HIF in the field is challenging, then fault or neutral impedance emerges as an important parameter for tuning the system. To achieve this, certain rigorous mathematical steps are derived to develop a suitable formulation for sensitivity analysis using differential calculus. Based on the analysis, the sensitivity results and tuning parameters are tabulated, and sensitivity dependency curves are plotted.

show abstract

Section: Introductionmentioning

confidence: 91%

Rigorous Mathematical Steps for Sensitivity Analysis of High Impedance Ground Fault Detection in Power Distribution Systems

Velmurugan¹,

Chattopadhayay

2020

Cogent Engineering

View full text Add to dashboard Cite

show abstract

“…power flow. From this perspective, the protection system structures have to change due to the modification in the fault current amplitude and direction [32]. Thus, it has led to a complete revision of the methods by which DSs should be monitored, controlled, and protected [33].…”

Section: System (Number Of Buses)mentioning

confidence: 99%

High Impedance Fault Location Methods: Review and Harmonic Selection-Based Analysis

Lopes

Menezes

Gomes

et al. 2023

IEEE Open J. Power Energy

View full text Add to dashboard Cite

High Impedance Faults (HIFs) are recurring events in electrical Distribution Systems (DSs) and occur by the contact between energized conductors and high impedance surfaces. HIFs may pose hazards to living beings and cause bushfires. However, the HIF protection has not been completely solved due to the small fault current and varying impedance, inhibiting traditional protection techniques from functioning correctly. In the literature, researchers have mainly focused on detection techniques. Thus, the development of HIF Location Methods (HIFLMs) is recent, and evidences for conclusive solutions are still lacking. Moreover, to this date, no existing study reviews the main challenges concerning HIFLMs in DSs. This paper proposes a systematic analysis of the common stages to design the main existing HIFLMs. The strategy is evaluating the similar characteristics that pose a common research path regarding challenges faced in real-world conditions. Additionally, this paper proposes a case study to assess the best input signals, metrics, and machine learning-based decision algorithms of a new HIFLM. The results are promising, with high identification rates, even in noisy conditions. The methodology can help to select the datasets for supervised learning-based HIFLM. Highlighting the state-of-art of current methods and support development of HIFLMs are this paper's main contributions.

show abstract

“…The opposite will occur at V f < V n as the current will flow back to the source, and when V n < V f < V p , no current will flow into the system. Other researchers in [47][48][49][50] expanded into Emanuel's model by experimenting with a variable resistor, as shown in Figure 6. However, this model lacks the ability to simulate the build-up and shoulder characteristics of an HIF.…”

Section: Two Antiparallel Diodesmentioning

confidence: 99%

High-Impedance Fault Diagnosis: A Review

Aljohani

Habiballah

2020

Energies

View full text Add to dashboard Cite

High-impedance faults (HIFs) represent one of the biggest challenges in power distribution networks. An HIF occurs when an electrical conductor unintentionally comes into contact with a highly resistive medium, resulting in a fault current lower than 75 amperes in medium-voltage circuits. Under such condition, the fault current is relatively close in value to the normal drawn ampere from the load, resulting in a condition of blindness towards HIFs by conventional overcurrent relays. This paper intends to review the literature related to the HIF phenomenon including models and characteristics. In this work, detection, classification, and location methodologies are reviewed. In addition, diagnosis techniques are categorized, evaluated, and compared with one another. Finally, disadvantages of current approaches and a look ahead to the future of fault diagnosis are discussed.

show abstract

A novel high impedance fault detection technique in distribution systems with distributed generators

Cited by 14 publications

References 18 publications

Rigorous Mathematical Steps for Sensitivity Analysis of High Impedance Ground Fault Detection in Power Distribution Systems

Rigorous Mathematical Steps for Sensitivity Analysis of High Impedance Ground Fault Detection in Power Distribution Systems

High Impedance Fault Location Methods: Review and Harmonic Selection-Based Analysis

High-Impedance Fault Diagnosis: A Review

Contact Info

Product

Resources

About