Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513741
D. Das, S. S. Chaudhuri, Sangita Roy
Outdoor image and video corrupt easily owing to fog, mist etc. Several techniques have been proposed to overcome these problems. But there is no optimum method as these scenarios are unpredictable and all situations are unique in their own way. Dark channel prior - a new prior-gives a significant prediction about the quantity of airlight that causes haze. Dark channel with contrast controller and sky masking improves the visibility with significantly reduced time. In this paper a innovative technique has been studied and it's qualitative and quantitative analysis carried out.
{"title":"Dehazing technique based on dark channel prior model with sky masking and its quantitative analysis","authors":"D. Das, S. S. Chaudhuri, Sangita Roy","doi":"10.1109/CIEC.2016.7513741","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513741","url":null,"abstract":"Outdoor image and video corrupt easily owing to fog, mist etc. Several techniques have been proposed to overcome these problems. But there is no optimum method as these scenarios are unpredictable and all situations are unique in their own way. Dark channel prior - a new prior-gives a significant prediction about the quantity of airlight that causes haze. Dark channel with contrast controller and sky masking improves the visibility with significantly reduced time. In this paper a innovative technique has been studied and it's qualitative and quantitative analysis carried out.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123286650","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513781
S. Chatterjee, R. K. Dholey, R. Bose, P. Roy
In this paper electric field enhancement factor has been computed due to presence of different volumes of single as well as multiple water droplets on a polymeric insulating surface. Outdoor polymeric insulators are exposed to different environmental conditions like rain, fog, salted fog etc. Hence the formation of discrete water droplets on the surface are very common. These water droplets cause the electric field enhancements at the triple points (interfacial point of three dielectric mediums i.e. solid, liquid and air) which may lead to external partial discharge or even flashover. Hence, in this contribution, the electric field computation has been performed due to presence of discrete water droplets using Finite Element Method under tangential AC electric field. To overcome the singularity problem of calculating electric field at the triple points, a different method of field calculation have been presented in this contribution which may provide better understanding of the electric field distribution in presence of water droplets on a insulating surface.
{"title":"Electric field computation in presence of water droplets on a polymeric insulating surface","authors":"S. Chatterjee, R. K. Dholey, R. Bose, P. Roy","doi":"10.1109/CIEC.2016.7513781","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513781","url":null,"abstract":"In this paper electric field enhancement factor has been computed due to presence of different volumes of single as well as multiple water droplets on a polymeric insulating surface. Outdoor polymeric insulators are exposed to different environmental conditions like rain, fog, salted fog etc. Hence the formation of discrete water droplets on the surface are very common. These water droplets cause the electric field enhancements at the triple points (interfacial point of three dielectric mediums i.e. solid, liquid and air) which may lead to external partial discharge or even flashover. Hence, in this contribution, the electric field computation has been performed due to presence of discrete water droplets using Finite Element Method under tangential AC electric field. To overcome the singularity problem of calculating electric field at the triple points, a different method of field calculation have been presented in this contribution which may provide better understanding of the electric field distribution in presence of water droplets on a insulating surface.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117043965","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513826
Ayan Saha, S. Chakraborty
The control of air vehicles is a very challenging task due to the presence of high nonlinearity and coupling between different elements. Twin Rotor MIMO System (TRMS) kit is a prototype of a helicopter designed for conducting laboratory experiments. The most common and simplest technique is to use a PID controller for the design process. Here in this paper we propose a simple design and implementation of an I-PD controller. We compare the results obtained from PID controller and I-PD controller and the results are found to be more satisfactory in case of I-PD controller. Further this scheme satisfies the robust condition of the plant.
{"title":"Genetic algorithm based I-PD controller design for Twin Rotor MIMO system","authors":"Ayan Saha, S. Chakraborty","doi":"10.1109/CIEC.2016.7513826","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513826","url":null,"abstract":"The control of air vehicles is a very challenging task due to the presence of high nonlinearity and coupling between different elements. Twin Rotor MIMO System (TRMS) kit is a prototype of a helicopter designed for conducting laboratory experiments. The most common and simplest technique is to use a PID controller for the design process. Here in this paper we propose a simple design and implementation of an I-PD controller. We compare the results obtained from PID controller and I-PD controller and the results are found to be more satisfactory in case of I-PD controller. Further this scheme satisfies the robust condition of the plant.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123864067","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513785
D. Debnath, M. Pal, K. Banerjee, B. Dam, K. Majumdar
Digital motion controllers (DMC) usually employ incremental encoders (IE) as angular position sensors and deploy one out of a handful of candidate algorithms to estimate the rotational rate from the pulse counts obtained from the IE at a periodic rate. The electronics for signal conditioning of the IE output pulse trains, elimination of input glitches and pulse multiplier for resolution enhancement are well-established hardware and all state-of-the-art DMCs have on-chip module of the same. The rate estimation algorithms based on the encoder pulse counts, however, tend to become erroneous at low rotational speeds. This problem is usually circumvented by a reciprocal counting mechanism, where the time between two successive IE pulses is measured to estimate the rotational rate. This paper proposes a seamless switching protocol between the two rate computing methods and presents the design of an Incremental Encoder Signal Conditioner (IESC) and its FPGA-based implementation that embeds the direct and reciprocal rate computation algorithms along with the automated changeover mechanism between the two for a more accurate estimation of rotational speed in a wide range of rotational speeds. The paper also presents the performance of the IESC over a large range of rotational rates.
数字运动控制器(DMC)通常采用增量编码器(IE)作为角位置传感器，并部署少量候选算法中的一种，以周期性速率从IE获得的脉冲计数中估计旋转速率。用于IE输出脉冲序列的信号调理、消除输入故障和提高分辨率的脉冲乘数器的电子设备是完善的硬件，所有最先进的dmc都有相同的片上模块。然而，基于编码器脉冲计数的速率估计算法在低转速下容易出错。这个问题通常通过倒数计数机制来解决，其中测量两个连续IE脉冲之间的时间来估计旋转速率。本文提出了两种速率计算方法之间的无缝切换协议，并提出了一种增量编码器信号调节器(Incremental Encoder Signal regulator, IESC)的设计及其基于fpga的实现，该设计嵌入了直接和互反速率计算算法以及两者之间的自动切换机制，以便在大转速范围内更准确地估计转速。本文还介绍了IESC在大转速范围内的性能。
{"title":"An FPGA-based incremental encoder signal conditioner with reduced error in rotational rate estimation over a wide range of rotational speeds","authors":"D. Debnath, M. Pal, K. Banerjee, B. Dam, K. Majumdar","doi":"10.1109/CIEC.2016.7513785","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513785","url":null,"abstract":"Digital motion controllers (DMC) usually employ incremental encoders (IE) as angular position sensors and deploy one out of a handful of candidate algorithms to estimate the rotational rate from the pulse counts obtained from the IE at a periodic rate. The electronics for signal conditioning of the IE output pulse trains, elimination of input glitches and pulse multiplier for resolution enhancement are well-established hardware and all state-of-the-art DMCs have on-chip module of the same. The rate estimation algorithms based on the encoder pulse counts, however, tend to become erroneous at low rotational speeds. This problem is usually circumvented by a reciprocal counting mechanism, where the time between two successive IE pulses is measured to estimate the rotational rate. This paper proposes a seamless switching protocol between the two rate computing methods and presents the design of an Incremental Encoder Signal Conditioner (IESC) and its FPGA-based implementation that embeds the direct and reciprocal rate computation algorithms along with the automated changeover mechanism between the two for a more accurate estimation of rotational speed in a wide range of rotational speeds. The paper also presents the performance of the IESC over a large range of rotational rates.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128705407","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513742
Aritra Sinha, Rijhi Dey, S. Sen
The paper describes a novel design that minimizes the effect of small offset errors in comparators of pipeline ADCs. This simple but effective error detection and correction scheme enables to eliminate the requirement of redundant comparators in the stages of a Pipeline ADC. A one bit per stage pipeline like architecture is also proposed. Implementing a single bit per stage design, using mono comparator per stage architecture leads to lower power consumption and eliminates the extra cost involved for redundant bits in a pipeline ADC. This error detection scheme is capable of minimizing error in Algorithmic, Successive Approximation or other multi stage or multi step ADCs. The proposed scheme was simulated as well as implemented in hardware using various discrete components and ICs. The developed error correction logic works properly for small comparator offset errors and exhibits fairly accurate results in simulation and as well as in hardware implementation. The designs, if fabricated in IC form, can be a low cost low power alternative to conventional pipeline architectures with a high resolution at a high speed with reasonably good accuracy, though requiring less area and consuming less power.
{"title":"Design of a novel error detection and correction scheme for pipeline and other multi-stage ADCs with a mono comparator per stage pipeline like architecture","authors":"Aritra Sinha, Rijhi Dey, S. Sen","doi":"10.1109/CIEC.2016.7513742","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513742","url":null,"abstract":"The paper describes a novel design that minimizes the effect of small offset errors in comparators of pipeline ADCs. This simple but effective error detection and correction scheme enables to eliminate the requirement of redundant comparators in the stages of a Pipeline ADC. A one bit per stage pipeline like architecture is also proposed. Implementing a single bit per stage design, using mono comparator per stage architecture leads to lower power consumption and eliminates the extra cost involved for redundant bits in a pipeline ADC. This error detection scheme is capable of minimizing error in Algorithmic, Successive Approximation or other multi stage or multi step ADCs. The proposed scheme was simulated as well as implemented in hardware using various discrete components and ICs. The developed error correction logic works properly for small comparator offset errors and exhibits fairly accurate results in simulation and as well as in hardware implementation. The designs, if fabricated in IC form, can be a low cost low power alternative to conventional pipeline architectures with a high resolution at a high speed with reasonably good accuracy, though requiring less area and consuming less power.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121275309","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513749
B. Halder, S. Mitra, M. Mitra
A histogram based simple and novel idea is proposed here for detection and identification of R wave, P wave and T wave from noise removal ECG Signal. The identification of ECG waveforms and their characteristic features is an important task for the diagnosis. In this work, histograms, a graphical demonstration of numerical data of equal size, is used as an estimator of the above mentioned waves of ECG signal. For this purpose the whole signal is divided into few small windows of predefined width having maximum 60 sample values in each. The Histograms are basically generated by measuring the variations of the orientations among these sample values in some quantized directions. After getting the histograms, few zones are depicted as QRS zones having the area more than a pre-defined threshold. The local maxima of these zones are considered as the R-peak. Based on same technique, P and T wave can also be detected. The method is advantageous as it can be used directly for online analysis without using any complex mathematical models. The whole technique has been established to be useful to a variety of ECG records for all the 12 leads taken from CSE Multi-lead ECG database which contains 5000 samples recorded at a sampling frequency of 500Hz. The algorithm is implemented on MATLAB R2010a environment. The performance of the proposed technique is evaluated. The accuracy of the proposed technique is achieved in Sensitivity (Se=99.86%), Positive Predictivity (+p=99.76%) and Detection accuracy (DA 99.8%) and hence we conclude that the proposed technique may be used for ECG analysis and classification.
{"title":"Detection and identification of ECG waves by histogram approach","authors":"B. Halder, S. Mitra, M. Mitra","doi":"10.1109/CIEC.2016.7513749","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513749","url":null,"abstract":"A histogram based simple and novel idea is proposed here for detection and identification of R wave, P wave and T wave from noise removal ECG Signal. The identification of ECG waveforms and their characteristic features is an important task for the diagnosis. In this work, histograms, a graphical demonstration of numerical data of equal size, is used as an estimator of the above mentioned waves of ECG signal. For this purpose the whole signal is divided into few small windows of predefined width having maximum 60 sample values in each. The Histograms are basically generated by measuring the variations of the orientations among these sample values in some quantized directions. After getting the histograms, few zones are depicted as QRS zones having the area more than a pre-defined threshold. The local maxima of these zones are considered as the R-peak. Based on same technique, P and T wave can also be detected. The method is advantageous as it can be used directly for online analysis without using any complex mathematical models. The whole technique has been established to be useful to a variety of ECG records for all the 12 leads taken from CSE Multi-lead ECG database which contains 5000 samples recorded at a sampling frequency of 500Hz. The algorithm is implemented on MATLAB R2010a environment. The performance of the proposed technique is evaluated. The accuracy of the proposed technique is achieved in Sensitivity (Se=99.86%), Positive Predictivity (+p=99.76%) and Detection accuracy (DA 99.8%) and hence we conclude that the proposed technique may be used for ECG analysis and classification.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127568105","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513821
T. Dey, K. Mukherjee, P. Syam
Electric Vehicles (EV) or Hybrid electric vehicles (HEV) require an electric motor which has high power density, high efficiency and a wide constant power operating region with flux weakening (FW) capability. Three phase Interior Permanent Magnet Synchronous Motors (IPMSMs) meet these criteria and are hence used in most commercial electrified vehicles. This work presents analysis, control system design and simulation of the Maximum torque per ampere (MTPA) control strategy in the two-axes (d-q) rotor reference frame. The control is applied on a custom-designed three-phase EV traction IPMSM for an electric scooter direct-drive up to base speed and beyond the base speed with flux-weakening control taking care of the machine's voltage and current constraints. A novel way to dynamically change the limits of the d-axis and q-axis reference voltages yet remaining within the machine's voltage constraints is presented in this paper in order to exploit the large flux-weakening range effectively.
{"title":"Dynamic adjustments of the D-Q axes reference voltage limits during flux weakening and MTPA control of an IPMSM drive for an EV application","authors":"T. Dey, K. Mukherjee, P. Syam","doi":"10.1109/CIEC.2016.7513821","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513821","url":null,"abstract":"Electric Vehicles (EV) or Hybrid electric vehicles (HEV) require an electric motor which has high power density, high efficiency and a wide constant power operating region with flux weakening (FW) capability. Three phase Interior Permanent Magnet Synchronous Motors (IPMSMs) meet these criteria and are hence used in most commercial electrified vehicles. This work presents analysis, control system design and simulation of the Maximum torque per ampere (MTPA) control strategy in the two-axes (d-q) rotor reference frame. The control is applied on a custom-designed three-phase EV traction IPMSM for an electric scooter direct-drive up to base speed and beyond the base speed with flux-weakening control taking care of the machine's voltage and current constraints. A novel way to dynamically change the limits of the d-axis and q-axis reference voltages yet remaining within the machine's voltage constraints is presented in this paper in order to exploit the large flux-weakening range effectively.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125912737","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513745
Sandip Chanda, A. De
This paper proposes the development of an intelligent Energy Management System (EMS) at consumer end to utilize the sensitivities of the local renewable generation, battery backup and Plug In Electric Vehicle resources to the changes in grid power input and price of electricity for utility and Demand Response optimization in Smart Micro Grids. In Demand Response usually the price elasticity of demand is considered as per statistical data. In this work the development of an optimized Demand Response(DR) has been depicted for reliable and efficient operation of Micro grids with Smart Communication facility. A housing complex, in the proposed work has been viewed as a future micro-grid and it has been demonstrated that the EMS developed can be effectively programmed to minimize the consumer payment by efficient utility and load management with the assistance of pricing signals from the Smart Grid. The choice of Particle Swarm Optimization(PSO) was compelling for the nonlinear nature of the optimization surface. The results obtained from simulation looked promising from context of future Smart Micro Grids.
{"title":"An intelligent energy management system to optimise demand response in Smart Micro Grids","authors":"Sandip Chanda, A. De","doi":"10.1109/CIEC.2016.7513745","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513745","url":null,"abstract":"This paper proposes the development of an intelligent Energy Management System (EMS) at consumer end to utilize the sensitivities of the local renewable generation, battery backup and Plug In Electric Vehicle resources to the changes in grid power input and price of electricity for utility and Demand Response optimization in Smart Micro Grids. In Demand Response usually the price elasticity of demand is considered as per statistical data. In this work the development of an optimized Demand Response(DR) has been depicted for reliable and efficient operation of Micro grids with Smart Communication facility. A housing complex, in the proposed work has been viewed as a future micro-grid and it has been demonstrated that the EMS developed can be effectively programmed to minimize the consumer payment by efficient utility and load management with the assistance of pricing signals from the Smart Grid. The choice of Particle Swarm Optimization(PSO) was compelling for the nonlinear nature of the optimization surface. The results obtained from simulation looked promising from context of future Smart Micro Grids.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133654184","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513765
Swarnankur Ghosh, S. Das
Indirect lightning stroke i.e. discharge between cloud and ground has strong impact on the UG (Under Ground) cable insulation. In this paper, the impact of lightning stroke in UG cable is investigated. High current carried by lightning stroke to ground creates breakdown channel in soil if the resulting field exceeds soil breakdown strength. Through this channel current can reach cable and if the resulting field generated on cable surface exceeds breakdown strength of cable insulation then also the cable can damage. So proper assessment of Electric field distribution in soil and on cable surface due to lightning current is necessary to envisage proper planning of protection scheme and strategy for mitigating severity to UG cable. In this paper, a complete study is done to investigate electric field distribution in soil due to lightning stroke, minimum lightning current required for soil breakdown, current intercepted by buried cable and overvoltage generated on cable surface due to that current. Also the effects of various factors like soil resistivity, cable location, lightning strike position, lightning current etc. are studied.
{"title":"Effect of lightning on soil characteristics with and without underground cable","authors":"Swarnankur Ghosh, S. Das","doi":"10.1109/CIEC.2016.7513765","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513765","url":null,"abstract":"Indirect lightning stroke i.e. discharge between cloud and ground has strong impact on the UG (Under Ground) cable insulation. In this paper, the impact of lightning stroke in UG cable is investigated. High current carried by lightning stroke to ground creates breakdown channel in soil if the resulting field exceeds soil breakdown strength. Through this channel current can reach cable and if the resulting field generated on cable surface exceeds breakdown strength of cable insulation then also the cable can damage. So proper assessment of Electric field distribution in soil and on cable surface due to lightning current is necessary to envisage proper planning of protection scheme and strategy for mitigating severity to UG cable. In this paper, a complete study is done to investigate electric field distribution in soil due to lightning stroke, minimum lightning current required for soil breakdown, current intercepted by buried cable and overvoltage generated on cable surface due to that current. Also the effects of various factors like soil resistivity, cable location, lightning strike position, lightning current etc. are studied.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132347916","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}
Pub Date : 1900-01-01DOI: 10.1109/CIEC.2016.7513770
Ayindrila Roy, J. Bera, G. Sarkar
This paper aims to monitor a substation from a centralized control station based on the data related to different buses and their secured and efficient communication. The data of the buses in a substation may primarily consist of the bus number, magnitudes of voltage, current, delta angle etc. In order to ensure data security while sending the bus information to a centralized monitoring station, the authors have proposed a hybrid data compression technique where Differential Pulse Code Modulation (DPCM) is first applied on the original data followed by Huffman coding. This results in efficient monitoring of a substation. Moreover, the data compression ratio is also found to be well within the limit. This has further enhanced the data security as well.
{"title":"Hybrid Huffman coding scheme for efficient and secured condition monitoring of a substation","authors":"Ayindrila Roy, J. Bera, G. Sarkar","doi":"10.1109/CIEC.2016.7513770","DOIUrl":"https://doi.org/10.1109/CIEC.2016.7513770","url":null,"abstract":"This paper aims to monitor a substation from a centralized control station based on the data related to different buses and their secured and efficient communication. The data of the buses in a substation may primarily consist of the bus number, magnitudes of voltage, current, delta angle etc. In order to ensure data security while sending the bus information to a centralized monitoring station, the authors have proposed a hybrid data compression technique where Differential Pulse Code Modulation (DPCM) is first applied on the original data followed by Huffman coding. This results in efficient monitoring of a substation. Moreover, the data compression ratio is also found to be well within the limit. This has further enhanced the data security as well.","PeriodicalId":443343,"journal":{"name":"2016 2nd International Conference on Control, Instrumentation, Energy & Communication (CIEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134435648","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}
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