Identification of Fault Location in Distribution Networks Using Multi Class Support Vector Machines

2012 ◽  
Vol 13 (3) ◽  
Author(s):  
Rimjhim Agrawal ◽  
Thukaram Dhadbanjan
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Fault Location ◽  
Short Circuit ◽  
Distribution Networks ◽  
Estimation Methods ◽  
Support Vector ◽  
Distribution Automation ◽  
Wide Range ◽  
Remote Terminal Units

Abstract This paper presents a multi-class support vector machine (SVMs) approach for locating and diagnosing faults in electric power distribution feeders. Different from the traditional Fault Section Estimation methods, the proposed approach uses measurements available at the substation and remote terminal units (RTUs). To show the effectiveness of the proposed methodology, a practical 52 nodes, 3 feeder distribution systems (DS) with loads is considered. Practical situations in distribution systems, such as protective devices (circuit breakers/isolators) placed at different locations and all types of faults with a wide range of varying source short circuit (SSC) levels and fault impedances are considered for studies. The proposed fault location scheme is capable of accurately identify the fault type, location of faulted feeder section and the fault impedance. The results demonstrate the feasibility of applying the proposed method in practical distribution automation (DA) system for fault diagnosis.

scholarly journals Contribution of Corporate Systems for Fault Location in Power Distribution Networks

2020 ◽  
Author(s):  
Gustavo Travassos ◽  
Danilo De Souza Pereira ◽  
Carlos Frederico Meschini Almeida ◽  
Luiz Henrique Leite Rosa ◽  
Nelson Kagan ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Fault Location ◽  
Short Circuit ◽  
Travelling Waves ◽  
Distribution Networks ◽  
Power Distribution Networks ◽  
Phone Calls ◽  
Current Scenario ◽  
Power Utilities

In power distribution systems, short-circuit events imply long service response time, affecting the quality of service. Although many research works propose fault location methodologies, which are based on meta-heuristics, artificial intelligence and travelling waves, most power utilities do not have the data requested by such approaches. Consequently, maintenance crews locate faults through field searches, considering the operation of protection devices and affected customers' phone calls, characterizing a procedure that may last some hours. This work proposes a practical fault location methodology, considering the current scenario of few metering data concerning the short-circuit events. Based on case studies results, the proposed methodology is considered effective. It may be executed in few seconds and leads to satisfactory results.

scholarly journals Development of an Integrated Power Distribution System Laboratory Platform Using Modular Miniature Physical Elements: A Case Study of Fault Location

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3780 ◽  
Author(s):  
Jinrui Tang ◽  
Binyu Xiong ◽  
Chen Yang ◽  
Cuilan Tang ◽  
Yang Li ◽  
...  
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Fault Location ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Power Distribution System ◽  
Zero Sequence ◽  
Assembly Technology ◽  
Physical Elements

The main shortcomings of the software-based power engineering education are a lack of physical understanding of phenomena and hands-on experience. Existing scaled-down analogous educational power system platforms cannot be widely used for experiments in universities due to the high cost, complicated operation, and huge size. An integrated power distribution system laboratory platform (PDSLP) using modular miniature physical elements is proposed in this paper. The printed circuit board (PCB) and microelectronic technology are proposed to construct each physical element. Furthermore, the constructed physical elements are used to set up an integrated PDSLP based on modular assembly technology. The size of the proposed cost-efficient PDSLP is significantly reduced, and the reliability of the proposed PDSLP can be improved greatly because the signal transmission path is shortened and a number of welding points are reduced. A PDSLP for fault location in neutral non-effectively grounded distribution systems (NGDSs) is selected as a typical experimental scenario and one scaled-down distribution network with three feeders is subsequently implemented and discussed. The measured zero-sequence currents by our proposed PDSLP when a single-phase earth fault occurred can reveal the true features of the fault-generated signals, including steady-state and transient characteristics of zero-sequence currents. They can be readily observed and used for students to design corresponding fault location algorithms. Modular renewable energy sources and other elements can be designed, implemented and integrated into the proposed platform for the laboratory education of the active distribution networks in the future.

scholarly journals Fault Location Method Using Phasor Measurement Units and Short Circuit Analysis for Power Distribution Networks

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1294
Author(s):  
Ji-Song Hong ◽  
Gi-Do Sim ◽  
Joon-Ho Choi ◽  
Seon-Ju Ahn ◽  
Sang-Yun Yun
Keyword(s):  
Power Distribution ◽  
Fault Location ◽  
Short Circuit ◽  
Distribution Networks ◽  
Circuit Analysis ◽  
Power Distribution Networks ◽  
Location Method ◽  
Measurement Units ◽  
Stage 1 ◽  
Short Circuit Analysis

This paper proposes a fault location method for power distribution networks using phasor measurement units (PMU) and short circuit analysis. In order to improve the problems of the existing studies, we focused on several approaches as follows. First, in order to minimize the number of PMU installations, a fault location estimation of lateral feeders through short circuit analysis was presented. Second, unbalanced faults and impacts of photovoltaic (PV) were considered. The proposed method consists of two stages. In Stage 1, the fault location was estimated for the main feeder using PMU installed at the start and end points of the main feeder. Symmetrical components of voltage and current variation were calculated by considering the impact of PVs interconnected to the lateral feeders. If the result of Stage 1 indicated a connection section of lateral feeder on the main feeder, Stage 2 would be performed. In Stage 2, the fault location was estimated for the lateral feeder by comparing the results of the short circuit analysis and measurements of PMUs. The short circuit analysis was based on an unbalanced power flow that considered dynamic characteristics of the PV inverter. The proposed method was verified through various fault situations in a test system. For the applicability of the proposed algorithm to the actual system, a noise test was also performed.

Intelligent Short Circuit Power Based Fault Location Algorithm in Distribution Network Excluding and Including DG Unit

2015 ◽  
Vol 793 ◽  
pp. 516-520 ◽  
Author(s):  
Payam Farzan ◽  
Mahdi Izadi ◽  
Chandima Gomes ◽  
M.H. Hesamian ◽  
M. Soheilirad
Keyword(s):  
Distribution Systems ◽  
Fault Location ◽  
Short Circuit ◽  
Distribution Network ◽  
Distribution Networks ◽  
Small Scale ◽  
Real Distribution ◽  
Simulated Distribution ◽  
Location Algorithm ◽  
Circuit Power

This paper presents an intelligent fault location technique for the radial unbalanced distribution systems, based on the meseurments of Short Circuit Power (S/C.P) values at the primary bus. A Multi-Layer Feed ForwardNeural Network (ML-FFNN) with the tunned parameters is designed to evaluate the measurments. The estimated locations of different fault types are compared with the actual distances and Difference Percentage is calculated for each location. To examine the performance of the proposed technique in presence of DG units, the senario is also repeated including a DG unit in the simulated distribution network and the acuired result are presented. The proposed fault location technique is capable of being implemented with the small scale dataset which is applicable for the real distribution networks.

scholarly journals Augmentation of situational awareness by fault passage indicators in distribution network incorporating network reconfiguration

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Tanmay Jain ◽  
Debomita Ghosh ◽  
Dusmanta Kumar Mohanta
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Fault Location ◽  
Situational Awareness ◽  
Electronic Device ◽  
Distribution Networks ◽  
System Stability ◽  
System Integrity ◽  
Intelligent Electronic Device

AbstractPower distribution systems are profoundly inclined to disturbances like untimely switching of breakers & relays, sympathetic tripping, and uncertainties regarding fault location. Thus, system stability and reliability are greatly affected. In this way, situational awareness and system integrity are the crucial factors in developing power system security, as it empowers successful decision making & timely reaction by the operators to any disturbance and also maintaining continuity of power supply. This paper focuses on the enhancement of situational awareness by fault location through fault passage indicators (FPI) to improve nominal impedance-based methods in distribution networks. Also, the proposed method is validated by comparing it with Intelligent Electronic Device (IED) based fault location method. Further, simultaneous reconfiguration of the system is incorporated to maintain the continuity of supply. The analysis has been tested on IEEE 33 bus distribution system.

Optimal fault location for power distribution systems with distributed generations using synchronized measurements

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Wen Fan ◽  
Yuan Liao ◽  
Ning kang
Keyword(s):  
Power Distribution ◽  
Distribution Systems ◽  
Fault Location ◽  
Test System ◽  
Power Distribution Systems ◽  
Distributed Generations ◽  
High Penetration ◽  
Maintenance Time ◽  
Phasor Measurements ◽  
Synchronized Measurements

AbstractAccurate fault location in distribution systems greatly shortens maintenance time and improves reliability. This paper presents novel methods to pinpoint fault location and identify possible bad measurements for enhanced accuracy. It is assumed that network parameters and topology of the distribution network are available. The methods are applicable to a single fault as well as simultaneous faults and are applicable to both balanced and unbalanced networks. The methods utilize synchronized voltage and current phasor measurements to locate the fault. The methods are validated by simulation studies using the modified IEEE 34-Node Test System. Case studies have demonstrated that the methods are suitable for distribution systems with high penetration of distributed generations.

Influence of distributed power supply in distributed power distribution network

2021 ◽  
pp. 1-8
Author(s):  
Xin Shen ◽  
Hongchun Shu ◽  
Min Cao ◽  
Nan Pan ◽  
Junbin Qian
Keyword(s):  
Power Supply ◽  
Power Distribution ◽  
Short Circuit ◽  
Power Grid ◽  
Distribution Network ◽  
Distribution Networks ◽  
Power Supplies ◽  
Power Distribution Network ◽  
Power Sources ◽  
Distributed Power

In distribution networks with distributed power supplies, distributed power supplies can also be used as backup power sources to support the grid. If a distribution network contains multiple distributed power sources, the distribution network becomes a complex power grid with multiple power supplies. When a short-circuit fault occurs at a certain point on the power distribution network, the size, direction and duration of the short-circuit current are no longer single due to the existence of distributed power, and will vary with the location and capacity of the distributed power supply system. The change, in turn, affects the current in the grid, resulting in the generation and propagation of additional current. This power grid of power electronics will cause problems such as excessive standard mis-operation, abnormal heating of the converter and component burnout, and communication system failure. It is of great and practical significance to study the influence of distributed power in distributed power distribution networks.

scholarly journals Complete power distribution system representation and state determination for fault location

DYNA ◽  
2015 ◽  
Vol 82 (192) ◽  
pp. 141-149 ◽  
Author(s):  
Andres Felipe Panesso-Hernández ◽  
Juan Mora-Flórez ◽  
Sandra Pérez-Londoño
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Distribution Systems ◽  
Fault Location ◽  
Estimation Error ◽  
Distance Estimation ◽  
Power Distribution Systems ◽  
Line Load ◽  
Power Distribution System ◽  
Line Section

<p>The impedance-based approaches for fault location in power distribution systems determine a faulted line section. Next, these require of the estimation of the voltages and currents at one or both section line ends to exactly determine the fault location. It is a challenge because in most of the power distribution systems, measurements are only available at the main substation.  This document presents a modeling proposal of the power distribution system and an easy implementation method to estimate the voltages and currents at the faulted line section, using the measurements at the main substation, the line, load, transformer parameters and other serial and shunt connected devices and the power system topology. The approach here proposed is tested using a fault locator based on superimposed components, where the distance estimation error is lower than 1.5% in all of the cases. </p>

scholarly journals Hardware solutions for energy-efficient control technologies of distribution network objects based on power semiconductor devices

2021 ◽  
Vol 24 (1) ◽  
pp. 91-96
Author(s):  
V. N. Krysanov ◽  
◽  
V. L. Burkovskii ◽  
I. A. Khaychenko ◽  
◽  
...  
Keyword(s):  
Reactive Power ◽  
Short Circuit ◽  
Distribution Networks ◽  
Voltage Transformer ◽  
Industrial Facilities ◽  
Power Semiconductor ◽  
Wide Range ◽  
Electric Power Sector ◽  
Power Part ◽  
Control Technologies

The article considers topical issues in development of energysaving technologies to optimize the control of distribution networks according to the criterion of minimum power losses. The technology consists in introducing new hardware to control the modes based on static devices. Based on the analysis of the existing hardware created to control the modes of distributio networks, the developed circuitry solutions of the power part and the control system of the multifunctional thyristor voltage transformer and hybrid thyristor capacitor are proposed. Their main technical characteristics and ways to reduce voltage asymmetry, limiting short circuit currents and regulating reactive power are det ermined. The use of software and hardware solutions was recommended for a wide range of energy conservation tasks, both in the electric power sector and at the level of industrial facilities

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