L. Ramesh, S. Chowdhury, S. Chowdhury, A. Natarajan
{"title":"Planning optimal intelligent metering for distribution system monitoring and control","authors":"L. Ramesh, S. Chowdhury, S. Chowdhury, A. Natarajan","doi":"10.1109/INDCON.2008.4768829","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768829","url":null,"abstract":"The accuracy of the distribution system state estimation is highly influenced by optimal meter allocation. This paper presents an innovative method for the placement optimization of power distribution system measurement. The goal of the method is to minimize the number of necessary measurements and required Remote Terminal Units, subject to the system observability requirements. The method based on particle swarm optimization algorithm is proposed to solve the problem of optimal placement of meters for distribution system The algorithm predicts the cost and location of meters for identification and collection of measurements from the system. The algorithm has been tested with IEEE and TNEB systems.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122963887","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}
{"title":"Three-phase four-wire dstatcom with H-bridge VSC and star/delta transformer for power quality improvement","authors":"B. Singh, P. Jayaprakash, D. Kothari","doi":"10.1109/INDCON.2008.4768759","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768759","url":null,"abstract":"A new topology of three-phase four-wire DSTATCOM consisting of a H-bridge VSC (voltage source converter) with a star/delta transformer is proposed for power quality improvement in the distribution systems. The proposed DSTATCOM (distribution static compensator) provides the voltage regulation or power factor correction by reactive power compensation along with harmonics elimination, load balancing and neutral current compensation in three-phase four-wire distribution system. The transformer has star connected primary and delta connected secondary and the load neutral point is connected to the neutral of star winding so that it provides a path to the zero sequence fundamental as well as harmonics neutral currents. This topology has the advantages of the use of two-leg, H-bridge VSC which reduces the size and cost of the DSTATCOM. The rating of the transformer is decided based on the compensating neutral current. The performance of the proposed DSTATCOM system is validated through simulations using MATLAB software with its simulink and power system blockset (PSB) toolboxes.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124054440","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}
{"title":"Price prediction based congestion management using growing RBF neural network","authors":"S. Pandey, S. Tapaswi, L. Srivastava","doi":"10.1109/INDCON.2008.4768771","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768771","url":null,"abstract":"This paper proposes a growing radial basis function (GRBF) neural network based methodology for nodal congestion price (NCP) prediction for congestion management in emerging restructured power system. An unsupervised learning vector quantization (VQ) clustering has been employed as feature selection technique for GRBF neural network as well as for partitioning the power system into different congestion zones. This ensures faster training for proposed neural network and furnishes instant and accurate NCP values, useful for congestion management under real time power market environment. A case study of RTS 24-bus system is presented for demonstrating the computational efficiency and feasibility of this approach.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127632118","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}
{"title":"Extended H2, H∞ and pole placement LMI characterization for continuous-time systems","authors":"M. Farhoodi, M. Beheshti","doi":"10.1109/INDCON.2008.4768781","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768781","url":null,"abstract":"In this paper, our goal is to extend the previously known results of the norm characterizations in the terms of the linear matrix inequalities. Our approach is based on a recently developed extended stability condition which contains as particular cases both the celebrated Lyapunov theorem for precisely known systems and the quadratic stability condition for uncertain continuous-time systems. It provides the opportunity to check stability using parameter-dependent Lyapunov functions which are derived from LMI conditions. In this paper, this feature is explored for deriving the extended analysis linear matrix inequalities of H2 -norm, Hinfin-norm and regional pole placement constraints. These extended norm characterization conditions exhibit a kind of decoupling between the Lyapunov and the system matrices, thus enable the checking of system performance using parameter-dependent Lyapunov matrices for uncertain continuous-time systems with convex polytopic uncertainty. Moreover, this feature provides a stepping stone for the design of controllers with multiobjective constraints as well as the design of robust H2 or Hinfin controllers without employing a unique Lyapunov matrix.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121074728","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}
{"title":"A license plate localization using morphology and recognition","authors":"C. Babu, K. Nallaperumal","doi":"10.1109/INDCON.2008.4768797","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768797","url":null,"abstract":"Locating the car license plate in an image a car is an important step in car license plate recognition/identification applications. This problem poses many challenges like location of license plate from images taken in poor illumination and bad weather condition; plates that are partly obscured by dirt and images that have low contrast. This paper presents a morphology based method for license plate extraction from car images followed by the segmentation of characters and reorganization. This algorithm uses morphological operations on the preprocessed, edge images of the vehicles. Characteristic features such as license plate width and height, character height and spacing are considered for defining structural elements for morphological operations. The recognition of the contents of the license plate is performed using cross correlation followed by neural network. The experimental results with a reasonably large set of car images are very encouraging.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116100773","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}
{"title":"Design and rating issues of power components in active power filters","authors":"S. Singh, R.K. Tripathi","doi":"10.1109/INDCON.2008.4768761","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768761","url":null,"abstract":"This paper presents the required harmonic power and rating issues of the active filter and power components. A design procedure is presented to select the DC bus capacitor that covers all modes of operation. The effect of the DC bus ripple on the compensation capacity is analyzed. A typical problem is included to illustrate the design approach followed by simulation results showing the static performance of the active filter.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121804754","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}
{"title":"Differential evolution based environmentally constrained economic dispatch","authors":"K. Mandal, N. Chakraborty","doi":"10.1109/INDCON.2008.4768769","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768769","url":null,"abstract":"A reliable differential evolution (DE) based algorithm for solving environmentally constrained economic dispatch (ECED) problem is presented in this paper. Environmentally constrained economic dispatch (ECED) problem is obtained by considering both the economy and emission objectives. A price penalty factor approach is used to convert the bi-objective ECED problem into a single objective function. Equality constraints on power balance as well as inequality constraints on generation capacity limits of the generators and transmission losses are considered. A six-unit test system is used to demonstrate the effectiveness of the proposed method. The results of the proposed method based on DE are compared with other standard methods. It is found that convergence rate of the proposed method is excellent and the results obtained by the proposed method are superior in terms of fuel cost, emission output and losses. It is further observed that the computation time is considerably reduced in DE.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123338204","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}
{"title":"Nonlinear identification and MIMO control of a laboratory helicopter using genetic algorithm","authors":"Hanif Tahersima, A. Fatehi","doi":"10.1109/INDCON.2008.4768841","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768841","url":null,"abstract":"Closed loop identification of nonlinear model and control of a laboratory helicopter using genetic algorithm is proposed in this paper. The derived model has a nonlinear structure. Using the previous results of the physical modeling of the studied plant, a nonlinear model is considered based on the physical dynamics of the system. However, there is no need to perform numerous physical experiments to estimate the model parameters. Instead, genetic algorithm as a nonlinear optimization technique is used to obtain the parameters of the model. Therefore, the advantage of both modeling and identification methods are employed. In the next step, the parameters of a multi input-multi output (MIMO) PID controller for the derived model will be tuned by GA using the obtained nonlinear model as a simulator of the plant. Applying the controller to both the real plant and the simulation model, the accuracy of the model and the performance of the controller is examined. The results demonstrate that the achieved model accurately fits to the behavior of the real plant and the controller designed based on this model, can control the real system appropriately.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131172448","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}
{"title":"Shifted Legendre polynomials approach to analysis of linear optimal control systems incorporating observers","authors":"B. Mohan, S. Kar","doi":"10.1109/INDCON.2008.4768754","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768754","url":null,"abstract":"Using shifted Legendre polynomials (SLP) a recursive algorithm is presented for the analysis of linear time-invariant optimal control systems incorporating observers. An illustrative example is included to demonstrate the superiority of proposed recursive algorithm over the existing .nonrecursive approach.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"28 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132537583","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}
{"title":"Improving performance of adhoc TCP in Mobile Adhoc Networks","authors":"S. Gajjar, H.M. Gupta","doi":"10.1109/INDCON.2008.4768816","DOIUrl":"https://doi.org/10.1109/INDCON.2008.4768816","url":null,"abstract":"Modifying transmission control protocol (TCP) to improve its performance in wireless networks has been a long-standing research problem. Many methods have been proposed to improve TCPpsilas performance in mobile adhoc networks (MANETs). Among them ad hoc TCP (ADTCP) uses an end-to-end approach which requires minimal changes at the sender and receiver, provides the flexibility for backward compatibility, maintains end-to-end TCP semantics and is TCP-friendly. It uses end-to-end measurements to detect congestion, disconnection, route change, and channel error, and each detection result triggers corresponding control actions. This paper proposes improved-ADTCP (I-ADTCP) an improvement on ADTCP. To improve the performance of ADTCP we consider following: ensure sufficient bandwidth utilization of the sender-receiver path; avoid the overloading of network by limiting TCPpsilas congestion window below the upper bound of bandwidth delay product (BDP-UB) of the path; check for incipient congestion by calculating inter-packet delay difference and short term throughput using relative sample density (RSD) technique. In an incipient congestion condition, we reduce congestion window limit (CWL) to half, which limits the packets send by the sender and does not allow the congestion to build up. Thus the algorithm tries to remain in congestion avoidance phase at all times by detecting and reacting to incipient congestion. Results of simulation using NS-2 show that I-ADTCP performance is superior to that of ADTCP for all levels of traffic intensity in the network. The good put performance is improved by 10%-30% in I-ADTCP.","PeriodicalId":196254,"journal":{"name":"2008 Annual IEEE India Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130011741","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}