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Variable speed stand-alone wind energy conversion system using synchronous generator 变速单机风能转换系统采用同步发电机
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156617
S. Sharma, Bhim Singh
{"title":"Variable speed stand-alone wind energy conversion system using synchronous generator","authors":"S. Sharma, Bhim Singh","doi":"10.1109/ICPES.2011.6156617","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156617","url":null,"abstract":"This paper deals with a synchronous generator (SG) based variable speed stand-alone wind energy conversion system (WECS). The voltage and frequency controller (VFC) consists of two back-back connected voltage source converter (VSC) and voltage source inverter (VSI) along with a battery energy storage system (BESS) at intermediate DC bus to allow the generation at variable voltage and variable frequency. The load-side VSI is controlled to feed regulated voltage and frequency supply to consumers. The performance of the VFC is obtained under steady-state and dynamic conditions. The simulation results demonstrate that the VFC performs satisfactorily as load leveler, load balancer, a neutral current compensator and as a maximum power point tracker.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116118862","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
On comparing the performance of Genetic Algorithm optimized PI and fractional order PI controller for power quality enhancement 比较遗传算法优化PI控制器与分数阶PI控制器在提高电能质量方面的性能
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156674
S. Srivastava, Astha Manaktala, Kamayani Sadhwani, M. Gupta
{"title":"On comparing the performance of Genetic Algorithm optimized PI and fractional order PI controller for power quality enhancement","authors":"S. Srivastava, Astha Manaktala, Kamayani Sadhwani, M. Gupta","doi":"10.1109/ICPES.2011.6156674","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156674","url":null,"abstract":"This paper deals with the application of a optimization technique inspired by natural evolution, namely Genetic Algorithm (GA) for the design of Fractional order Proportional and Integral (FOPI) based DSTATCOM (Distributed Static Compensator) and ELC (Electronic Load Controller). The GA technique helps search efficiently the optimal parameters of the FOPI controller. Conventional controllers use integral order control which is less robust as compared to fractional order control. This paper is based on a novel application of fractional order controller optimized by genetic algorithm for power quality improvement using DSTATCOM and ELC in a power system. With the help of modelling carried out in a MATLAB based environment and a set of simulation results, the superiority of the designed FOPI over PI (Proportional — Integral) based DSTATCOM and ELC controllers used in power distribution system is affirmed and a comparative study in terms of overshoots and undershoots is presented.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116104480","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
Apparent impedance seen at generator terminal for faults on HV side of Delta-Star generator transformer Delta-Star发电机变压器高压侧故障时发电机终端的视阻抗
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156632
A. Sai, Sachin Srivastava, S. Ganesan, Suresh Maturu
{"title":"Apparent impedance seen at generator terminal for faults on HV side of Delta-Star generator transformer","authors":"A. Sai, Sachin Srivastava, S. Ganesan, Suresh Maturu","doi":"10.1109/ICPES.2011.6156632","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156632","url":null,"abstract":"Delta-Star transformer configuration is commonly used in power systems for voltage transformation. When distance relays are used to detect faults through these Delta-Star transformers, the measurement of apparent impedance seen from delta side is more complicated than that seen on the star side. However, this can be analyzed using sequence components and networks in a systematic way. The results so achieved can be used to set protective relays and analyze their behavior and would be a good source of reference for engineers studying and practicing power systems.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125374874","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
Improvement of dynamic performance of three area thermal system under deregulated environment using AC tieline parallel with HVDC link 用交流与直流并联的方法改善放松管制环境下三区热力系统的动态性能
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156607
T. Kumar, V. Krishna, N. Ramana
{"title":"Improvement of dynamic performance of three area thermal system under deregulated environment using AC tieline parallel with HVDC link","authors":"T. Kumar, V. Krishna, N. Ramana","doi":"10.1109/ICPES.2011.6156607","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156607","url":null,"abstract":"This paper presents an analysis on dynamic performance of a three-area thermal system interconnected with AC tie-line parallel with HVDC link when subjected to parametric uncertainties. In this paper all the three areas consists of thermal power plants. The AC tie-line parallel with HVDC link is used as a system interconnection between all the three areas. Open transmission access and the evolution of more socialised companies for generation, transmission and distribution affects the formulation of Automatic Generation Control (AGC) problem. So, the traditional three area system is modified to take into account the effect of bilateral contracts on the dynamics. It has been observed that the dynamic response of three-area interconnected thermal plants through tie-line is sluggish and degraded when compared to the dynamic response of three area interconnected thermal power plants connected through an AC tie line Parallel with HVDC link.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121830198","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: 10
Photovoltaic array based multilevel inverter for power conditioning 基于光伏阵列的多电平逆变器电力调节
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156621
S. Rajasekar, Rajesh Gupta
{"title":"Photovoltaic array based multilevel inverter for power conditioning","authors":"S. Rajasekar, Rajesh Gupta","doi":"10.1109/ICPES.2011.6156621","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156621","url":null,"abstract":"This paper proposes a photovoltaic (PV) array supported five-level cascaded H-bridge multilevel inverter (CHBMLI) based shunt active power filter (SAPF). The combined system is used for power conditioning application to improve power quality in the distribution network. The photovoltaic supported CHBMLI makes attractive solution because this inverter need isolated dc source in the dc side of the each H-bridge. The SAPF is used to compensate both reactive and harmonic components of the current drawn by the non linear load. Additionally, it also balances the supply current for unbalanced load. In this paper it is shown that the PV based multilevel inverter configured SAPF not only compensates the harmonic current, reactive power and unbalancing but also injects real power whenever it is demanded in the distribution system. The compensation and power flow control in this paper is developed based on the instantaneous power theory. The simulation results presented in this paper evidently proves the compensation capabilities and real power injection. The simulation studies are carried out under power system computer aided design PSCAD/EMTDC 4.2 environment.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"494 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121954671","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: 17
Transmission cost allocation with and with out losses in restructured power system 电力系统改制后有无损耗的输电成本分配
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156606
P. S. Varma, V. Sankar
{"title":"Transmission cost allocation with and with out losses in restructured power system","authors":"P. S. Varma, V. Sankar","doi":"10.1109/ICPES.2011.6156606","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156606","url":null,"abstract":"This paper focuses on the transmission cost allocation procedures with and with out real power transmission losses and provides a comparison of two alternative methodologies; Flat Rate based method i.e., Postage Stamp (PS) Method and Power Flow based method i.e., Proportional Sharing Principle (PSP) Method. Algorithms have been developed and implemented for cost allocation based on these two methods. These two methodologies are illustrated on sample 3-bus system and IEEE-24 bus system. The simulation results obtained from the MATLAB program are analyzed.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116085657","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
GPS synchronized current differential protection of mutually coupled line 互耦线路GPS同步电流差动保护
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156629
Snehal Unde, S. Dambhare
{"title":"GPS synchronized current differential protection of mutually coupled line","authors":"Snehal Unde, S. Dambhare","doi":"10.1109/ICPES.2011.6156629","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156629","url":null,"abstract":"Mutual coupling effect makes the protection of parallel transmission lines a quite challenging problem. Recent work shows that current differential protection can be a better option for protection of transmission lines due to its selectivity and sensitivity. In this paper we explore a current differential protection scheme for mutually coupled lines considering line charging current. Global Positioning System (GPS) is used for synchronized current and voltage measurements. The differential function is developed using equivalent-π model for transmission line and phase coordinate approach. Simulations are carried out in ATP/EMTP environment on a parallel two terminal transmission system. Results show the superiority of scheme.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122603138","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
Some aspects of power system stabilizer performance in subsynchronous resonance study 电力系统稳定器性能在次同步谐振研究中的几个方面
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156655
M. K. Shashidhara, K. Shubhanga
{"title":"Some aspects of power system stabilizer performance in subsynchronous resonance study","authors":"M. K. Shashidhara, K. Shubhanga","doi":"10.1109/ICPES.2011.6156655","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156655","url":null,"abstract":"In this paper, behavioural aspects of two types of power system stabilizers (PSS), i.e., a slip-signal PSS and a Delta-P-Omega PSS are studied in a fixed series capacitor compensated system employing the IEEE first benchmark system for SSR study. The well-known slip-signal-torsional interaction is studied to understand its dependency on the magnitude of network compensation. From such a study it is noted that the slip-signal-interaction is prominent only at higher degree of line compensation. It is also shown that Delta-P-Omega PSS is immune to such torsional interactions. Further, using the eigenvalue-based study, the swing-mode damping performance of slip-signal PSS and Delta-P-Omega PSS are studied when a system is series compensated. This study not only demonstrated the superiority of Delta-P-Omega PSS, but also validated the poor performance of slip-signal PSS. All these observations are verified by carrying out simulations on PSCAD/EMTDC. To enhance the understanding about the SSR phenomenon, some fundamental observations made in the study are also listed.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126159539","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
An intelligent control of solid oxide fuel cell voltage 一种智能控制固体氧化物燃料电池电压的方法
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156613
K. C. Bhuyan, K. Mahapatra
{"title":"An intelligent control of solid oxide fuel cell voltage","authors":"K. C. Bhuyan, K. Mahapatra","doi":"10.1109/ICPES.2011.6156613","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156613","url":null,"abstract":"This paper presents a comprehensive non-linear dynamic model of a solid oxide fuel cell (SOFC) that can be used for transient behaviors studies. The model based on electrochemical and thermal equations, accounts for temperature dynamics and output voltage losses. The relaxation time is strongly related to the transient temperature distribution of the solid oxide fuel cell structure. Therefore, it is in the order of some minutes depending on the design parameters and the operating conditions. The model contains the hydrogen, oxygen and water block separately. Other blocks are concentration, activation and ohmic losses block. The analytical details of how active and reactive power output of a stand-alone solid oxide fuel cell power plant (FCPP) is controlled. This analysis depends on an integrated dynamic model of the entire power plant including the reformer.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116167418","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: 9
Small signal stability analysis of grid connected Photo Voltaic distributed generator system 并网光伏分布式发电系统的小信号稳定性分析
2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156620
S. Ravichandran, S. Dasan, R. Devi
{"title":"Small signal stability analysis of grid connected Photo Voltaic distributed generator system","authors":"S. Ravichandran, S. Dasan, R. Devi","doi":"10.1109/ICPES.2011.6156620","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156620","url":null,"abstract":"Distributed Generation is a small source of electric power conversion from non-conventional energy sources such as Photo Voltaic system (PV), wind, Fuel cell etc. Small signal stability analysis is very much essential to study the inter-area and intra area oscillations which normally exist in a power system. But, it leads to unstable operation when small disturbances are applied. Normally, mechanical part of a synchronous system is intrinsically prone to weakly damped oscillations and the damping of these oscillations must come from other sources, such as damper windings and the machine's controllers. Because power system oscillations have frequencies in the order of a few Hz and of rather small amplitude, hardly any damping is provided by the damper windings, leaving the controllers and the rest of the power system as the main contributors to the damping of the rotor speed oscillations. So in this paper, Power system stabilizer (PSS) is used for providing damping torque. This paper examines the effect of PV sources on small signal stability conditions of conventional power system with Synchronous Generators (SG) along with PSS. Eigen value analysis is conducted after developing a Differential-Algebraic model (DAE) in power balance form and tested on a modified 3 synchronous machine − 9 bus system [10] with PV converters.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116491058","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
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