2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)最新文献_第3页

Partial discharge study in transformer oil using acoustic emission technique and UV-visible spectroscopy 用声发射技术和紫外可见光谱学研究变压器油局部放电

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280245

Hussain Kalathiripi, S. Karmakar

{"title":"Partial discharge study in transformer oil using acoustic emission technique and UV-visible spectroscopy","authors":"Hussain Kalathiripi, S. Karmakar","doi":"10.1109/CATCON.2017.8280245","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280245","url":null,"abstract":"The existence of incipient faults in the transformer is realized in the degradation of the insulating transformer oil (TO). One of such incipient faults is partial discharge (PD). Even though PD problem looks small at the outset, if not taken care, it may lead to the major problem even to the extent of the total failure of the transformer. There are many methods that have come up to solve the partial discharge problem such as electrical measurement method, UHF (ultra-high frequency) antenna method, but they face the issue of noise interference. Therefore, in this proposed work, the attention has been drawn to acoustic emission (AE) technique. The obtained results show AE technique has great potential to analyze the PD activity efficiently with minimum background noise. This technique has several advantages over the conventional electrical method (IEC 60270) such as immune to electromagnetic interference, high monitoring sensitivity and the possibility of the detecting as well as locating the partial discharge. The proposed work also has been focused on the UV-visible spectroscopy to analyze the degraded oil samples due to PD. The obtained results showed that UV-visible spectroscopy has the potential to analyze PD-affected transformer oil samples qualitatively.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132729364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Thermal conditions during prequalification testing in HVDC cable systems mimicking reality by a sandbox 沙箱模拟高压直流电缆系统资格预审时的热条件

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280176

S. Alapati, B. Kumar, F. Fälth, M. Saltzer

引用次数: 0

Particle swarm intelligence based dynamic economic dispatch with daily load patterns including valve point effect 基于粒子群智能的含阀点效应的日负荷动态经济调度

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280189

G. Gupta, S. Goyal

{"title":"Particle swarm intelligence based dynamic economic dispatch with daily load patterns including valve point effect","authors":"G. Gupta, S. Goyal","doi":"10.1109/CATCON.2017.8280189","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280189","url":null,"abstract":"The main aim of a power engineer is to develop a highly reliable power supply system. The goal of a Dynamic Economic Load Dispatch (DELD) problem is to establish a generating schedule of power generating units corresponding to the most economical point of operation keeping the change in daily load patterns into considerations over a given time horizon. This also attempts to lower the operating cost and the fuel consumption. This research work makes a contribution in finding an optimal solution of DELD problem by using the proposed solution technique, based on Particle Swarm Optimization (PSO) technique. PSO is used to find the optimum generation schedule for all the power generating units to supply power to the load at the minimum possible running cost and the fuel consumption, at the same time satisfying all the system constraints like: Valve point effect, Ramp rate limits and transmission losses. Th simulation is carried out on a system of 5 generating units over the time horizon of 24 Hours with the proposed PSO and the results are compared with the results obtained from other methodologies such as Simulated Annealing (SA), Differential Evolutionary (DE) and Heuristic Algorithm (HS).","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"11 1 Pt 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128123547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

A method to accelerate FDS measurement using logarithmic chirp excitation voltage 利用对数啁啾激励电压加速FDS测量的方法

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280222

S. Chatterjee, S. Dalai, B. Chatterjee, S. Chakravorti

引用次数: 3

Study of corona with and without barrier at 0.1 Hz and 50 Hz frequency sinusoidal voltage excitation 0.1 Hz和50 Hz频率正弦电压激励下有和无阻挡电晕的研究

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280203

Ramesh P. Nair, B. N. Rao, B. V. Sumangala

引用次数: 3

Influence of insulation model parameters on transfer function zero evaluated for diagnosis of oil-paper insulation 绝缘模型参数对油纸绝缘诊断传递函数零的影响

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280248

C. Banerjee, Saurabh, A. Baral, S. Chakravorti

{"title":"Influence of insulation model parameters on transfer function zero evaluated for diagnosis of oil-paper insulation","authors":"C. Banerjee, Saurabh, A. Baral, S. Chakravorti","doi":"10.1109/CATCON.2017.8280248","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280248","url":null,"abstract":"Conventional Debye Model is commonly used for analysis of dielectric response function evaluated from Polarization and Depolarization Current data. The same Polarization current profile when fitted to obtain insulation model, may result in different number of branches depending on curve fitting parameter. Zero of Transfer Function (evaluated using insulation Model parameters) having highest magnitude can be used to obtain performance parameters like paper-moisture and dissipation factor. In this present work, polarization current data from laboratory sample is measured at two different temperatures. This is followed by formulation of Conventional Debye Model parameters from each measurement. The two resulting insulation model structures are not identical in terms of number of branches and parameters therein as branch parameters depend on curve fitting. This paper investigates the influence of varying branch parameters of Conventional Debye Model on the values of performance parameters that are evaluated using Zero of insulation model Transfer Function.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127083923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Spurious resistance identification in SPWM inverter circuit feeding power to induction motor SPWM异步电机馈电逆变电路的杂散电阻辨识

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280215

Bipul Oraon, Subhadip Das, Santanu Das, Partha P. Mishra, Abhishek Jain

{"title":"Spurious resistance identification in SPWM inverter circuit feeding power to induction motor","authors":"Bipul Oraon, Subhadip Das, Santanu Das, Partha P. Mishra, Abhishek Jain","doi":"10.1109/CATCON.2017.8280215","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280215","url":null,"abstract":"This paper proposes a simple yet effective method to identify faulty switch and faulty phase in Sinusoidal Pulse Width Modulation (SPWM) inverter feeding power to induction motor. A typical but frequently appearing fault in inverter switch may occur due to the introduction of spurious resistance in series with any of the IGBTs. Such fault normally gets introduced due to poor contact point, aging, overheating and in most of the situations, these kind of faults remains undetected at their early stage by the drive protection system. If such fault remains undetected, due to overstress & overheating in healthy IGBTs, may lead to failures in other components as well. Generated heat in switch contact point accelerates the deterioration of the switch performance as the generated heat would lead to further increase of contact resistance. Therefore a positive feedback type situation arises and that may lead to a catastrophic failure. This paper proposes an algorithm developed in MATLAB to detect such faults and faulty phase in SPWM inverter by carrying out analyses on motor currents captured from a model equivalent to such situations implemented in PSIM simulation software. Some features have been extracted using Fast Fourier Transforms (FFTs) on Park's Vector Modulus (PVM) of three phase motor current profiles & finally Simplified Fuzzy Art-Map (SFAM) classifier has been employed to detect faulty switch and degree or level of fault. The obtained results provide a satisfactory level of accuracy.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122212101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Space charge characteristics of layered and functionally graded insulator 层状和功能梯度绝缘子的空间电荷特性

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280214

S. Qasim, N. Gupta

{"title":"Space charge characteristics of layered and functionally graded insulator","authors":"S. Qasim, N. Gupta","doi":"10.1109/CATCON.2017.8280214","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280214","url":null,"abstract":"Functionally graded materials (FGM) have recently been proposed for effective stress control in insulators. FGM are materials in which one or several material properties vary continuously as a function of space. Their main advantage lies in the absence of discrete changes (as found in layered composites) in the properties of the material. Layered insulator composites suffer from the drawback of charge accumulation at the interface of any two layers. Due to this, local field enhancement may occur in the materials leading to their degradation and eventual breakdown. In this work, we fabricate layered dielectric specimens and continuously graded FGM dielectric specimens for comparison. Bisphenol-A epoxy resin is used as the base material and alumina (AhO3, having average diameter of 9 μm) as filler. By changing the volume fractions of fillers, layers of different permittivity are manufactured. To obtain layered samples, one layer is deposited over another. A layered sample having very low differences in the properties of adjacent layers is hot pressed to obtain approximately ‘graded’ specimens. Space charge accumulation is measured by the Pulsed Electro Acoustic — PEA method (TechImp, Italy). In the graded specimens, reduction in the accumulated space charge is observed.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125973036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Z source inverter application and control for decentralized photovoltaic system Z源逆变器在分散光伏系统中的应用与控制

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280183

Arvind Yadav, S. Chandra, V. Deolia, S. Agrawal

{"title":"Z source inverter application and control for decentralized photovoltaic system","authors":"Arvind Yadav, S. Chandra, V. Deolia, S. Agrawal","doi":"10.1109/CATCON.2017.8280183","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280183","url":null,"abstract":"Renewable energy sources and technologies are increasingly gaining popularity in developing countries as their increasing energy demand can be met by the unexplored potential of renewable energy. With help of decentralized system the power can be directly used at local load centers which will ease centralized grid. The Impedance Source Inverter (ZSI) has many unique advantages as compared to normal Voltage Source Inverter (VSI) and is suitable for both centralized and decentralized applications. This paper elaborates the distinguishing feature of ZSI which makes it suitable for isolated and grid integrated applications for a source whose nature is highly intermittent. Operating principle, steady state analysis, different carrier modulation techniques to control shoot-through (ST) states are described. ZSI is able to maintain the constant load bus voltage when connected to a highly intermittent PV panel with help of suitable control technique. Its superiority in decentralized photovoltaic (PV) application is verified with help of MATLAB/Simulink environment. An insight of inter-dependency of semiconductor device voltage stress, boosting factor (B) and modulation index (M) for sinusoidal pulsewidh modulation (SVPWM) control techniques is also presented.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121159881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Improved relay algorithm for detection and classification of transmission line faults using signum function of instantaneous power 利用瞬时功率的sgn函数，改进了输电线路故障检测与分类的继电器算法

2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2017-11-01 DOI: 10.1109/CATCON.2017.8280181

Abdul Waheed Kumar, H. Verma, Shashank Singh

{"title":"Improved relay algorithm for detection and classification of transmission line faults using signum function of instantaneous power","authors":"Abdul Waheed Kumar, H. Verma, Shashank Singh","doi":"10.1109/CATCON.2017.8280181","DOIUrl":"https://doi.org/10.1109/CATCON.2017.8280181","url":null,"abstract":"A novel algorithm on fault detection and classification employing instantaneous power using signum function was reported in 2014 [6]. However, the performance analysis was not exhaustive and the effect of the line load on the relay behavior was not reported. A detailed investigation has been carried out by the authors of this paper to study the effectiveness of the technique using instantaneous power flows and the relay algorithm has also been improved. The principle of fault detection and classification has been tested by simulating a 230 kV, 50 Hz, five-bus system in PSCAD/EMTDC. The various parameters of the study include dc offset, line load, location of fault and fault resistance. Various fault resistance values ranging from 0.01 ohms to 1000 ohms have been taken for simulation. The study has been carried on two types of lines: a line between a source bus and a load bus and a line connected between two source buses. Results of the study are presented in this paper. The final outcome of the study is that the technique works successfully with low fault resistance values and low line loading but fails to detect fault with high resistance faults occurring on heavily loaded lines.","PeriodicalId":250717,"journal":{"name":"2017 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128616052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6