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Single Phase Grid Interactive Solar Photovoltaic Inverters: A Review 单相电网交互太阳能光伏逆变器:综述
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476767
Surabhi Chaudhary, S. Singh
{"title":"Single Phase Grid Interactive Solar Photovoltaic Inverters: A Review","authors":"Surabhi Chaudhary, S. Singh","doi":"10.1109/NPEC.2018.8476767","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476767","url":null,"abstract":"Nowadays, single phase inverters are extensively being implemented for small scale grid-tied photovoltaic (PV) system. Small size PV inverters are replacing the central inverters. These inverters convert and transfer the power supplied by the single or a string of modules to the grid. Following this trend, various single phase inverters from conventional full bridge (H4) to more complex topologies have been introduced in the past few years. In this paper, single phase PV inverter topologies are classified and reviewed. First, the topologies are classified on the basis of PV module configurations, galvanic isolation and power conversion stages. Then, each topology is discussed in detail, addressing their merits and demerits. Finally, the recent development and future prospects of grid connected PV systems are discussed.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125484319","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
Load frequency control of Multi-area Power System in Deregulated Environment 放松管制环境下多区域电力系统负荷频率控制
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476702
J. Keerthana, K. Selvi
{"title":"Load frequency control of Multi-area Power System in Deregulated Environment","authors":"J. Keerthana, K. Selvi","doi":"10.1109/NPEC.2018.8476702","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476702","url":null,"abstract":"Large scale technological developments in the power sector have made the electric power network more complex. This has led to the restructuring of the entire power network which has created new issues related to the stability of the system. One of them is frequency control. The objective of this work is to solve frequency control problem in a two area restructured system with two GENCOS and two DISCOS in each area. In order to prevent the violation of generation limits a Generation rate constraint has been imposed on the turbine. A linear quadratic regulator has been designed and the system is evaluated with and without contract violations. Comparison between the conventional system without GRC and the proposed system including GRC is made. Simulation results reveal that the proposed LQR controller is able to perform well when GRC is included in the system.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115698067","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
Impact of Generator/Demand Constraints on Market Clearing Price under Pool Market with Elastic Demand 弹性需求池市场下发电机/需求约束对市场出清价格的影响
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476710
S. Madhankumar, S. Prabhakar Karthikeyan, Atul Manmohan, Akhil Prasad
{"title":"Impact of Generator/Demand Constraints on Market Clearing Price under Pool Market with Elastic Demand","authors":"S. Madhankumar, S. Prabhakar Karthikeyan, Atul Manmohan, Akhil Prasad","doi":"10.1109/NPEC.2018.8476710","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476710","url":null,"abstract":"In recent years, state electricity boards are getting transformed towards the restructuring process. It has brought lot of challenges in market environment. The main objective of deregulation is to provide competition and opens new choices to benefit the consumers. In this competitive environment, determination of Market Clearing Price (MCP) is the main aim of a pool operator. Its goal is to maximize the societal welfare function i.e. both Gencos’ and the Discos’ have to get benefited. In this paper, instead of taking stepped bid function from the generators and consumers, quadratic bid functions are taken as an input and the impact of MCP on generator limits has been investigated with and without losses.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131462295","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: 3
Performance Investigation of Sub Multilevel Inverter with Reduced Number of Switches 少开关次多电平逆变器的性能研究
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476712
T. Sowjanya, K. Veerendranath
{"title":"Performance Investigation of Sub Multilevel Inverter with Reduced Number of Switches","authors":"T. Sowjanya, K. Veerendranath","doi":"10.1109/NPEC.2018.8476712","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476712","url":null,"abstract":"Power electronic (PE) converters have many applications and in multilevel inverter the output can be achieved by combining quite a lot of DC sources. Generally Cascade H-Bridge (CH-BMLI) multilevel inverter needs more sources of DC and switches to raise the levels of output voltage. This paper evaluates the performance of sub (S-MLI) multilevel inverter to generate 17 level output with less DC links and switches with reduced THD. This can be achieving by using both unidirectional and bidirectional switches. The simulation results encourage the proposed sub multilevel inverter replacing the general topologies.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121105867","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
Performance Analysis of Hysteresis Voltage and Current Control of Three Phase-Four Wire UPQC 三相四线制UPQC滞回电压电流控制性能分析
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476734
S. Shamshul Haq, D. Lenine, S. V. N. L. S. V. N. L. Lalitha
{"title":"Performance Analysis of Hysteresis Voltage and Current Control of Three Phase-Four Wire UPQC","authors":"S. Shamshul Haq, D. Lenine, S. V. N. L. S. V. N. L. Lalitha","doi":"10.1109/NPEC.2018.8476734","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476734","url":null,"abstract":"In this paper, the compensation capability of three phase-four wire Unified Power Quality Conditioner is analyzed with Synchronous reference frame theory for the generation of reference signals and hysteresis voltage and current controller for switching pulse generation of shunt and series converters. The performances analysis is carried out for different power quality problems and disturbances like current harmonics, voltage harmonic, voltage sag/swell, neutral current compensation, transient load, unbalanced load. The capacitor voltage is regulated by using PI controller. Simulation work is done to verify the results using MATLAB/SIMULINK tool.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116475892","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
A Novel Structure of Cascaded Multilevel Inverter with High Voltage Level Generation Capability using Reduced Components 一种采用简化元件的高电压级联多电平逆变器结构
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476791
Rojalin Rout, T. Roy, T. R. Choudhury, B. Nayak
{"title":"A Novel Structure of Cascaded Multilevel Inverter with High Voltage Level Generation Capability using Reduced Components","authors":"Rojalin Rout, T. Roy, T. R. Choudhury, B. Nayak","doi":"10.1109/NPEC.2018.8476791","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476791","url":null,"abstract":"A novel cascaded multilevel inverter structure is presented in this paper. The presented topology possesses the capability to generate large number of voltage levels at output terminals using significantly lower number of components. The basic unit of proposed topology is asymmetric in nature and can produce 35 levels using 6 unidirectional switches and 4 bidirectional switches and 6 input dc sources of magnitude V/2, V/2, V, V, 3V, 3V. Further, cascaded MLI structure has been developed by using the proposed basic unit. The cascaded structure can produce better quality of output voltage using minimum components. The proposed topology has been compared with the relevant recently developed topologies with respect to different perspective such as required switching devices, isolated dc sources, gate driver circuit for generating specific voltage level. Further, the stress voltages across the switches have been evaluated and compared with the other topologies. It is observed that the topology requires minimum components and provides minimum Total standing voltage for generating specific output level with respect to other topologies. The effectiveness of proposed topology is verified by an extensive simulation study of 35 level MLI structure with different load condition such as RL, L, and sudden load change condition.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114071147","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
Analysis of Wind Characteristics using ARMA & Weibull Distribution 基于ARMA和威布尔分布的风特性分析
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476717
A. Nayak, K. Mohanty
{"title":"Analysis of Wind Characteristics using ARMA & Weibull Distribution","authors":"A. Nayak, K. Mohanty","doi":"10.1109/NPEC.2018.8476717","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476717","url":null,"abstract":"Rapid growth of population demands huge increase of electrical power that can’t be fulfilled with the expansion of conventional generation due to environmental concern. To meet the aggregating power demand, alternative generation like wind energy is getting more importance. Wind energy conversion system (WECS) transforms available speed at a location into electricity. But the problem associated with WECS is the uncertainty in the speed of the wind. Thus, efforts have to be made to showcase the randomness of the wind speed. Two famous methods time based auto regressive moving average (ARMA) and frequency based Weibull distribution are generally followed to fulfill the purpose. Both methods are used to develop models to fit to the observed speed. The accuracy of fitting in case of ARMA is checked through Box-Jenkins guidelines and F-Criterion. But in case of Weibull distribution, the parameters are determined with the estimation of statistical errors.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114724695","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
A Double Frequency Ripple Suppression Control in Quasi Z- Source Inverter 准Z源逆变器的双频纹波抑制控制
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476744
S. Priyanka, F. X. Edwin Deepak
{"title":"A Double Frequency Ripple Suppression Control in Quasi Z- Source Inverter","authors":"S. Priyanka, F. X. Edwin Deepak","doi":"10.1109/NPEC.2018.8476744","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476744","url":null,"abstract":"The quasi z-source inverter was implemented for boosting the voltage at the input side to the desired dc link voltage, thus the voltage gain and efficiency can be improved. The quasi z- source inverter draws the continuous input current and provides a common earthing between the pv and dc-link bus. The quasi z- source inverter configuration can be applied to a wide range of converting the power in electrical conversion system (ac-ac, ac-dc, dc-ac, dc-dc). One of the significant advantage of quasi z-source network is the reduced stress for the voltage on the inverter switches when compares to the traditional two stage inverter topology. Also quasi z-source inverter has lower total harmonic distortion (THD) values which in turn results in the reduced output filter size and cost. A new modulation technique for quasi $mathrm{z$-source inverter configuration which can improve the voltage and current levels by using the additional converter stage was implemented. The converter has both buck and boost capabilities. Depends on the specific applications the converter can be replaced with buck, boost, buck-boost, cuk, sepic etc., Also a single photovoltaic (pv) module is sufficient to obtain the desired output and thus reducing the overall cost of the system. The quasi z- source inverter model can be used along with the flyback converter for laser, mobile phone charger, standby power supply in pc applications.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125898430","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: 4
Neural Network Based Demand Side Management Using Load Shifting 基于神经网络的负荷转移需求侧管理
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476754
G. Hemanth, S. Raja, S. Suganya, P. Venkatesh
{"title":"Neural Network Based Demand Side Management Using Load Shifting","authors":"G. Hemanth, S. Raja, S. Suganya, P. Venkatesh","doi":"10.1109/NPEC.2018.8476754","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476754","url":null,"abstract":"Demand Side Management (DSM) is one of the emerging areas that focus on management of demand at the customer side in order to achieve various benefits such as reduction in electricity cost, reducing peak demand, improving load factor etc. While the objective of any DSM activity considered so far is peak demand reduction, peak to average ratio (PAR) improvement, load factor improvement, user satisfaction maximization etc., the main objective discussed in this paper is the minimization of electricity consumption cost since by reducing the electricity cost, the remaining objectives can be achieved indirectly. Further the potential of DSM is analyzed for a sample test system and DSM is implemented using load shifting technique since this technique typically does not alter total electricity consumption. Neural network is used to create a network and train it according to test system data to minimize mean square error.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115083966","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: 4
Development of ALFC and AVR Control Loop as Laboratory Model using DC-DC Buck Chopper 基于DC-DC降压斩波器的ALFC和AVR控制回路实验模型的开发
2018 National Power Engineering Conference (NPEC) Pub Date : 2018-03-01 DOI: 10.1109/NPEC.2018.8476742
Villuri Ravi Teja, S. Balamurugan, S. Sampath Kumar
{"title":"Development of ALFC and AVR Control Loop as Laboratory Model using DC-DC Buck Chopper","authors":"Villuri Ravi Teja, S. Balamurugan, S. Sampath Kumar","doi":"10.1109/NPEC.2018.8476742","DOIUrl":"https://doi.org/10.1109/NPEC.2018.8476742","url":null,"abstract":"The main objective of Automatic Voltage Regulator (AVR) is to maintain the terminal voltage through controlling the excitation. Automatic Load Frequency Control (ALFC) plays significant role in maintaining the frequency through controlling the mechanical power input to match the varying load requirements. In this paper, the laboratory model of AVR along with ALFC is developed. The proposed AVR and ALFC system based on laboratory model gives an added advantage over the mathematical model due to its materialistic approach. AVR senses the terminal voltage of an alternator and compares with the reference voltage and generates error signal which intern adjusts the field current by using DC-DC Buck chopper. ALFC senses the speed ofthe alternator and compares it with the reference speed and generates error signal which intern adjusts the mechanical power input to an alternator by using DC-DC Buck chopper connected to the armature terminal of the DC-motor. The entire setup is simulated in Matlab@ simulink. The proposed laboratory model based AVR and ALFC system is tested for various loading conditions to validate its effectiveness.","PeriodicalId":170822,"journal":{"name":"2018 National Power Engineering Conference (NPEC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114296186","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: 3
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