Poly Durg, India R. N. Patel, PhD Dept. The parameters of the transmission line that vary during the fault conditions are voltage, current, and impedance value of the line. Thus, fault detection and classification are two major categories of transmission lines. The performance of an artificial neural network should be analyzed properly and particular neural network structure and . But the authors have reported that wavelet transform based approach gave better results only when more than one phase Mohamed Ramadan Abdel-Atty B.Sc., Ain Shams University, 2007 Submitted in partial fulfillment of the requirements for the M.Sc. The transmission line is an important part of the grid. We investigate single circuit trans-mission line with 100 Km length in this paper. Keyword: -Parallel transmission line, fault classification and detection, fuzzy logic, wavelet, ANN. This paper presents a discrete wavelet transform and neural network approach to fault detection and classification in transmission lines. . INTRODUCTION Double circuit transmission line or parallel transmission lines have been extensively utilized in modern power systems to enhance the power transfer, reliability and security for the transmission of electrical energy. Three Phase Transmission Line Network for fault detection and classification A three phase, 735 kV, 60 Hz power system is delivering power from generating station consisting of six 350 MVA generators CLASSIFICATION OF TRANSMISSION LINE FAULTS Dhanashri D. Taywade , Professor A.A Ghute Abstract— Transmission lines is a vital component that acts as a bridge between the generating stations . The proposed algorithm generates the wavelets on the basis of the fundamental definitions of discrete wavelet transform (DWT) using a classification method based on probability such as the Bayesian linear discrimination analysis. Classification of Faults on Transmission lines using EMTP and Wavelet Multiresolution Analysis Mandira Baruah1, Mrs. Purabi Patowary2 1 Student,M.E., 2Associate Professor Department of Electrical & Instrumentation Engineering Assam Engineering College, Guwahati-781013,Assam I. Keywords: Artificial Neural Network, Fault Detection, Classification, Transmission Line 1. Efforts have been made to include almost all the techniques and philosophies of transmission lines reported in the literature. The length of line is calculated between the two substations of concern. Figure 1.1 : Maintenance at Transmission Lines 1.1 Problem Statements Malaysia nowadays is a developed country. At the same time, the remote video . Figure 1. classification and isolation in a transmission line system. The three-phase voltage and current signals are sampled at a frequency of 50Hz, by using the equation 2, obtain the voltage and current phasors. The current signals of three phases and neutral are sampled at sampling frequency of 20 kHz. Classification of Transmission Lines - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The length of Medium Transmission Line varies from 80 to 160 km. degree in electrical engineering Supervised By Transmission line protection is an important issue in power system engineering because 85-87% of power system faults are occurring in transmission lines. through transmission lines. This algorithm requires impedance measurement data from one end of the transmission line. 19(3), pp. 5. transmission line fault detection, classification and location. The electrical power is transmitted over a transmission line with a speed of light that is 3 × 10 8 m ⁄ sec. The main objectives of this project are: To study the existing fault classification, detection and location scheme for transmission line. Keywords— Transmission line, Fault detection, Faulted phase selection, Haar wavelet, Wavelet transform. Abstract. and classification in transmission line Shuma Adhikari1*, Nidul Sinha2 and Thingam Dorendrajit1 Background Modern power system is a complex network and requires high-speed, precise, and reli-able protective system. Classification of. 2- For a 50 ohm lossless transmission line terminated in a load impedance ZL=100 + j50 ohm, determine the fraction of the average incident power reflected by the load. A block diagram of the workflow for transmission line fault classification can be shown in the block diagram as Figure 1. Abstract: The fault classification of medium-voltage transmission lines consisting of wind farms connected to the high-voltage (HV) transmission networks is carried out using the power-spectrum-based hyperbolic S-transform (HST) powerful technique for analysing non-linear and non-stationary fault signals through the non-intrusive monitoring . A Transmission Line classification based on its length are Short, Medium and Long lines. of Elect. This dissertation work gives technique to classify the different faults on transmission line for quick and reliable operation of protection schemes. classify they open conductor fault by designing and implementing ANN based protection scheme in the parallel transmission line. This theory is also discussed in many textbooks and lecture 101 Due to small distance and low . In order to perform this, the distance protection task is subdivided into different neural networks for fault detection, fault identification (classification) Chen etal. 3- Make sure you understand the slotted line problem. combined transmission system is presented in this paper. length of the transmission line, the fault location algorithms must be used to determine the faulty point [1]. Design Artificial intelligence system using Neural network or fuzzy logic controller based on training data set or fuzzy rule base respectively. The proposed work uses only a quarter cycle pre-fault and half cycle post-fault receiving end line current signals for fast identification and isolation of the faulty line. Engg. As the transmission line is a set of conductors being run from one place to another supported by transmission towers, the parameters are distributed uniformly along the line. and classication on transmission line has been reviewed inK. Introduction Overhead transmission lines are parts of the main components in an electric power system and, because transmission lines are exposed to the nature, the possibility of To appropriately design transmission line model with power system components with specification. Transmission Lines A transmission line is either The work presented in this paper is focused on identification of simple power system faults. Hence, the transmission line is more prone to faults compared to any other equipment that affects its stability and operating limits. Index Terms - Transmission line, fault detection and classification, wavelet feature, multi-resolution analysis. e observation networkwasbasedon buses,andthevariableparameters classification on the transmission line. Figure 1. This paper investigates the application of Principal Component Analysis (PCA) for the development of a simple method of classification and localization of power system faults for a 150 km long transmission line. The transmission line is the medium of transferring the power from the generating station to the load centre. Over the years, several fault detection and classification methods on transmission lines have been used. Line constants are considered . MATLAB/Simulink software is used to illustrate the effectiveness of the proposed approach, an extensive simulation studies have been carried out for different types of faults. The resistance and inductance form the series impedance and the capacitance exists between the line conductor and earth conductor. Classification Transmission lines are generally classified as follows: 1) Short transmission line 2) Medium transmission line 3) Long transmission line 6. But for long transmission line classification needs the accuracy and actual detection of the fault and direction of the fault. Up to 80 km (Up to 50 miles) Medium transmission line. which are transmission line model development, fault signal generation and data collection, data pre-processing, fault classification using LSTM technique and performance assessment. 4. Also, what is the magnitude of the average reflected power if |Vo|=1? Simulation results indicate that the wavelet transform is an effective technique in the field of fault detection and classification of various fault categories. (b) Coaxial transmission line:- This consists of an inner and a coaxial outer conducting sheath separated by a dielectric medium .They are used as TV cables, telephones cables and power cables. This paper presents a technique to detect . The sources No.1 & 2 research [].Mehrdad Majidi etal. Patel, "Fault Detection and Classification on a Transmission Line Using Wavelet Multi Resolution Analysis and Neural . The line is compensated at 50% degree of compensation. Each group of lines is modeled based on the different parameters. Also, more recently, ANN embedded in microcontroller for transmission line fault . Frequency of the power is 50 Hz. Transmission Lines Classification of Transmission Lines The transmission line performance depends upon the three parameters R, L, and C. These three parameters are distributed uniformly along the whole length of the line. In this paper, detection and In this paper, detection and classification of some these faults is done based on the information conveyed by the wavelet analysis of power systems transients. all type of faults and hence reliable tool for detection and classification of faults occurred in transmission line. Three transmission lines are used of 100km long, while one of the transmission lines is parallel to the two series transmission lines: here two way supply given to the RLC series load through transmission lines since our main aim to create fault in one of the transmission line during that time the supply is not interrupt They are the. I. polyethylene) Transmission Line Faults Classification Using Wavelet Transform. . So the complexity of protection scheme for six -phase transmission line is more as compared to three phase transmission. In power transmission line protection, faulty phase identification, classification and location are very important issues which need to be addressed in reliable and accurate manner for the analysis [1]-[2]. which are transmission line model development, fault signal generation and data collection, data pre-processing, fault classification using LSTM technique and performance assessment. ISSN: 2277-9655 [Taywade* et al., 5(12): December, 2016] Impact Factor: 4.116 IC™ Value: 3.00 CODEN: IJESS7 IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY DETECTION AND CLASSIFICATION OF TRANSMISSION LINES FAULTS USING DISCRETE WAVELET TRANSFORM AND ANN AS CLASSIFIER Dhanashri D. Taywade*, Prof A.A Ghute * P.R Pote College of Engineering and Technology, Amravati . The analysis of medium transmission lines considers the three lumped line constants: resistance, inductance, and capacitance. PRADEEP.P For power system studies consulting and corporate training requirements, reach out us - Power Projects ELECTRICAL CHARACTERISTICS OF TRANSMISSION LINES & BASIC CLASSIFICATION OF LINE LENGTH: Electrical power is transferred from generating stations to consumers through overhead lines and cables. Short-Transmission Line. the techniques are highly affected by the nature of the Key Words: Transmission Line, Fault Classification, L_G, LLG . PDF | On Jan 1, 2008, Sami Ekici and others published CLASSIFICATION OF TRANSMISSION LINE FAULTS BY USING WAVELET TRANSFORM AND PROBABILISTIC NEURAL NETWORKS | Find, read and cite all the research . At the safe operating limits, transmission line carries the rated ElectraNet owns, manages and operates transmission lines at 275kV, 132kV and 66kV. Faults in power system are unavoidable and overhead transmis-sion line faults are generally higher compare to other major components. INTRODUCTION The transmission lines are integral part of the power system network, as it is the link between the electricity power production and usage. The study system single line diagram has been shown in Figure 5 and its parameters have been pointed out in table 5. Different faults as single line to ground, double line to ground, line to line, 3 lines to ground are simulated on transmission line at various system conditions. With the concepts associated with smart grid attracting growing concern among researchers, the importance of building an intelligent fault monitoring and diagnosis system capable of classifying and locating different types of faults cannot be overstated. To appropriately design transmission line model with power system components with specification. transmission lines. The single line diagram for 9 bus transmission line, is considered for the analysis of fault location accuracy for series compensated line in MATLAB. The key function of a transmission line is to transfer bulk power between generation sources and load centres. A novel scheme for detection and classification of transmission line congestion in power systems using feed forward and radial basis function neural networks is presented. to synchronous measurement approach for detection, classification and location of faults 5]. transmission lines using superimposed sequence components of current signals. for an electrical power system transmission line fault classification and detection especially in view of the increasing dynamic connectivity of the modern electrical power transmission systems. Mishra, "Support Vector Machine Based Fault Classification and Location of a Long Transmission Line" Engineering Science and Technology, an Int. Engg. It is mainly classified into two types. Above 240 km (> 150 miles) The classification of lines into different groups simplifies the process of modeling. An approach for transmission line classification also described in this paper. 2. They found the Radial Basic Exact-Fit (RBEF) ANN and the Haar Mother wavelet to be the most suitable transmission line fault classifier and wavelet transform function particularly for noisy environments. Transmission line protection is an important issue in power system because 85-87% of power system faults are occurring in transmission line. To study the existing fault classification, detection and location scheme for transmission line. This work . Transmission Lines 11.1 Transmission Line Theory Figure 11.1: Transmission lines were the rst electromagnetic waveguides ever invented. based transmission line fault detection and classification technique reported in [12] (which addresses double circuit transmission lines), to teed circuit transmission line and propose an adaptive protection scheme for such systems by using the ANN approach. Many of the literature surveys show various methods for fault detection or classification excluding ins u- Length. Many building, factory and house been developed. This paper presents a survey on different fault classification methodologies in transmission lines. The general model for detection and classification of transmission line faults is represented as shown in fig. The detection and classification is carried out by using energy of the detail coefficients of the phase signals, used as input to neural network to classify the faults on transmission lines. Neural network . model of transmission line is considered for analysis. Conventional method of fault detection and classification is based After years of research, power engineers developed a new type of high-level transmission line safe operation monitoring system [1]. In the detection stage, the neural network is trained to learn the complex mapping between various nonlinear multi-objective input functions and the specified target in order to arrive at the desired goal of identifying the . Thesis By Eng. A classification accuracy of 86% is achieved using a single nearest neighbour classifier. 1368-80, 2016. The technique involves analysis of fault induced transient that can provide extensive information about the fault detection . Govt. detection and classification in AC transmission line systems. Classification of Shunt Fault s in Six Phase Transmission Line using k-Nearest Neighbor Algorithm A Naresh Kumar 1, M Chakravarthy 2, Ch Sanjay 3 1Department of Electrical and Electronics Engineering, Institute of Aeronautical Engineering, Hyderabad, India 2Department of Electrical and Electronics Engineering, Vasavi College of Engineering, Hyderabad, India The term Transmission Lines broadly refers to overhead transmission lines and underground cables. They found the Radial Basic Exact-Fit (RBEF) ANN and the Haar Mother wavelet to be the most suitable transmission line fault classifier and wavelet transform function particularly for noisy environments. Fault Detection and Classification on a Transmission Line using Wavelet Multi Resolution Analysis and Neural Network Mamta Patel Dept. For short length, the shunt capacitance of this . Classification of Transmission Lines. of Elect. Design of Fault detection and . 2. Two Wire Open Transmission Line •Can be used as transmission line between antenna & transmitter or antenna & receiver •Parallel two-wire line (Fig 12-1) -Spaced from 0.25 - 6 inches apart •Twin Lead or two-wire ribbon-type line (Fig 12-2) -Low loss dielectric (e.g. classification of transmission lines under power swing conditions, which could be used to provide a suitable tool to block or monitor relay operations. This system includes weather monitoring on capacity-increase of transmission line, safe operation, insulator, icing, etc. INTRODUCTION . Since medium transmission lines have sufficient length and usually operate at voltages greater than 20KV, the effect capacitance cannot be neglected. INTRODUCTION One of the biggest problems in the continuity of electrical power system supply is the occurrence of faults. The results achieved demonstrate that transmission line faults can be automatically Fault Classification On Power System Transmission Line Using Pattern Recognition Algorithm Ogboh V. C. Obute K. C. Eleanya M. N Department of Electrical of Engineering, NnamdiAzikiwe University Awka, Anambra State, Nigeria I. July 16, 2016 by admin. SALAMA3, NAZAR MALIK4 1,2,3 University of Waterloo (CAN), King Saud University4 (Saudi Arabia) Short transmission line Transmission line having length less than 80 km and operating voltage less than 20 kV are generally known as Short transmission line. The proposed algorithm leads to high accuracy at minimum cost to predict fault location and fault type classification. In these lines impedance and admittance are to be considered uniformly distributed (not lumped) and, therefore, for their solution rigorous methods are employed. Modal decomposition is used to extract positive sequence impedance. A 765 kV double circuit transmission line of 300 km length has been simulated using MATLAB@13.0.1 software. A block diagram of the workflow for transmission line fault classification can be shown in the block diagram as Figure 1. For a 400kV, 100MVA, and 112km transmission is simulated and worked in MATLAB/SIMULINK environment. S.S.C.E.T, Durg, India ABSTRACT Transmission and distribution lines are vital links between generating units and consumers. (a) Two wire transmission line:-This transmission line consists of a pair of parallel conducting wires separated by a uniform distance .These are used in power systems or telephones lines. 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