Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156690
G. S. Punekar, Tesfaye Nafo, N. Kishore
The electric field distribution in Belted Cables and 3-phase gas insulated cables (GIC) enclosed in a common ground enclosure is analyzed and presented in this paper. The electric fields in this type of GIC are analogous to those of 3-phase belted cables. Unlike 3-phase screened cables, the stress distribution in belted cables is not radial. With time varying voltages (power frequency voltage variations; quasi-static voltages) the stress distribution in the cable insulation changes, not being radial. The electric stress distribution is expected to show systematic, revolving effect. This revolving effect is important as the location of maximum stresses keep on shifting. Also, as a secondary effect, the revolving e-field results into electric-field-winds which can add to the particle movements in the gas insulated cables. The literature acknowledges that particle movements in the gas insulated system can have deleterious effect on the over all system insulation strength; which partly get impetus from e-field-winds. The stresses in such a cable are analyzed using open source software Finite Element Method Magnetics (FEMM). The results presented show that the field distribution over a cycle (of 50 Hz) at discrete time intervals are thought to be having a great educational value, giving a feel of electric field variation in (i) belted cables and (ii) GIC with common enclosure. The computed results of electric stress and potential distribution using FEMM are compared with available results based on CSM models to validate the present results where ever possible.
{"title":"On electric fields in belted cables and 3-phase gas insulated cables","authors":"G. S. Punekar, Tesfaye Nafo, N. Kishore","doi":"10.1109/ICPES.2011.6156690","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156690","url":null,"abstract":"The electric field distribution in Belted Cables and 3-phase gas insulated cables (GIC) enclosed in a common ground enclosure is analyzed and presented in this paper. The electric fields in this type of GIC are analogous to those of 3-phase belted cables. Unlike 3-phase screened cables, the stress distribution in belted cables is not radial. With time varying voltages (power frequency voltage variations; quasi-static voltages) the stress distribution in the cable insulation changes, not being radial. The electric stress distribution is expected to show systematic, revolving effect. This revolving effect is important as the location of maximum stresses keep on shifting. Also, as a secondary effect, the revolving e-field results into electric-field-winds which can add to the particle movements in the gas insulated cables. The literature acknowledges that particle movements in the gas insulated system can have deleterious effect on the over all system insulation strength; which partly get impetus from e-field-winds. The stresses in such a cable are analyzed using open source software Finite Element Method Magnetics (FEMM). The results presented show that the field distribution over a cycle (of 50 Hz) at discrete time intervals are thought to be having a great educational value, giving a feel of electric field variation in (i) belted cables and (ii) GIC with common enclosure. The computed results of electric stress and potential distribution using FEMM are compared with available results based on CSM models to validate the present results where ever possible.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"1 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":"130943743","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 : 2011-12-01DOI: 10.1109/ICPES.2011.6156666
Lea J. Puthumana, J. Jaleel
In this paper a detailed study of small hydro power plant, a novel technique to reduce the size of the dump load, auomatic generation control, its simulation and case study of Mankulam small hydro plant etc. is done. Two pipe and Three pipe strategy with proportional-integral controller and on/off controller is proposed here. By using Matlab / SIMULINK, frequency deviation response and dump load response, with step input and chirp input are plotted with different load conditions. The water flowing through the penstock is rerouted in smaller pipes, two or three fitted with motor operated valves. The opening or closing of the valves is achieved by on/off controls. The on/off control linearly raises or lowers the generation. A generalized transfer function model for the system is developed with an on/off control logic. Finally, the transient performance of the system is compared for the two-pipe case (50% dump load) and the three-pipe case (30% dump load). Therefore, the proposed scheme is very effective in automatic generation control of the small-hydro system in addition to reduction in the size of the dump load by 50% and/or 30%, and also, the cost of the controllers including valves is considerably less than the dump load cost, in addition to saving water.
{"title":"Performance evaluation of AGC of SHP with multi-area power system","authors":"Lea J. Puthumana, J. Jaleel","doi":"10.1109/ICPES.2011.6156666","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156666","url":null,"abstract":"In this paper a detailed study of small hydro power plant, a novel technique to reduce the size of the dump load, auomatic generation control, its simulation and case study of Mankulam small hydro plant etc. is done. Two pipe and Three pipe strategy with proportional-integral controller and on/off controller is proposed here. By using Matlab / SIMULINK, frequency deviation response and dump load response, with step input and chirp input are plotted with different load conditions. The water flowing through the penstock is rerouted in smaller pipes, two or three fitted with motor operated valves. The opening or closing of the valves is achieved by on/off controls. The on/off control linearly raises or lowers the generation. A generalized transfer function model for the system is developed with an on/off control logic. Finally, the transient performance of the system is compared for the two-pipe case (50% dump load) and the three-pipe case (30% dump load). Therefore, the proposed scheme is very effective in automatic generation control of the small-hydro system in addition to reduction in the size of the dump load by 50% and/or 30%, and also, the cost of the controllers including valves is considerably less than the dump load cost, in addition to saving water.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"1 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":"114466873","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 : 2011-12-01DOI: 10.1109/ICPES.2011.6156632
A. Sai, Sachin Srivastava, S. Ganesan, Suresh Maturu
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156607
T. Kumar, V. Krishna, N. Ramana
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156621
S. Rajasekar, Rajesh Gupta
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156606
P. S. Varma, V. Sankar
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156629
Snehal Unde, S. Dambhare
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156655
M. K. Shashidhara, K. Shubhanga
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156613
K. C. Bhuyan, K. Mahapatra
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.
{"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}
Pub Date : 2011-12-01DOI: 10.1109/ICPES.2011.6156620
S. Ravichandran, S. Dasan, R. Devi
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.
{"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}
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