Pub Date : 2014-09-01DOI: 10.1109/ISEG.2014.7005573
B. Jyothi, M. Rao
The main purpose of the inverters is to transfer power from a DC source to an AC load. Inverters are widely used in motor drives, un-interrupted power supplies (ups), appliances run from an automobile battery and photovoltaic utility grid interface. This paper describes a comparative study of performance between the five leg inverter and the five phase full bridge inverter. These inverters are used to feed the five phase induction motor. Now-a-days, the thrust is on research involving multiphase (more than three phase) due to their intrinsic benefits over the conventional systems. When the motor is fed by three phase supply, the undulation content is found to be high. However, this undulation content is smoothened by using multiphase systems. Therefore the applicability of multiphase systems is explored in electric power generation, transmission, & utilization.
{"title":"Comparison of five leg inverter and five phase full bridge inverter for five phase supply","authors":"B. Jyothi, M. Rao","doi":"10.1109/ISEG.2014.7005573","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005573","url":null,"abstract":"The main purpose of the inverters is to transfer power from a DC source to an AC load. Inverters are widely used in motor drives, un-interrupted power supplies (ups), appliances run from an automobile battery and photovoltaic utility grid interface. This paper describes a comparative study of performance between the five leg inverter and the five phase full bridge inverter. These inverters are used to feed the five phase induction motor. Now-a-days, the thrust is on research involving multiphase (more than three phase) due to their intrinsic benefits over the conventional systems. When the motor is fed by three phase supply, the undulation content is found to be high. However, this undulation content is smoothened by using multiphase systems. Therefore the applicability of multiphase systems is explored in electric power generation, transmission, & utilization.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124924618","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005582
A. Vamshi Kumar, K. Ajith, P. N. Reddy, G. Naik, N. Rakesh
Distribution Generation aims at integrating different power plants to increase the reliability and provide additional power quality benefits. Coming to the grid-connected mode, almost all the commercial single-phase inverters for DG systems inject only active power to the grid, i.e., the reference current is computed from the reference active power p* that must be generated. This paper deals with a single-phase inverter acquiring power quality features, i.e., active and reactive power generation along with current harmonics compensation. This is achieved by integrating the functions of shunt Active Power Filter (APF) to the control scheme. The control scheme employs a current reference generator with a dedicated repetitive current controller. Two phase conversion of single phase system is used in this paper for the extraction of harmonic components and also for supplying required reactive power by load. The simulation results are presented for the grid connected inverter that generates active power and compensates the reactive power and current harmonics of local loads, thus achieving complete power quality features.
{"title":"Improved power quality control strategy for distributed generation systems","authors":"A. Vamshi Kumar, K. Ajith, P. N. Reddy, G. Naik, N. Rakesh","doi":"10.1109/ISEG.2014.7005582","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005582","url":null,"abstract":"Distribution Generation aims at integrating different power plants to increase the reliability and provide additional power quality benefits. Coming to the grid-connected mode, almost all the commercial single-phase inverters for DG systems inject only active power to the grid, i.e., the reference current is computed from the reference active power p* that must be generated. This paper deals with a single-phase inverter acquiring power quality features, i.e., active and reactive power generation along with current harmonics compensation. This is achieved by integrating the functions of shunt Active Power Filter (APF) to the control scheme. The control scheme employs a current reference generator with a dedicated repetitive current controller. Two phase conversion of single phase system is used in this paper for the extraction of harmonic components and also for supplying required reactive power by load. The simulation results are presented for the grid connected inverter that generates active power and compensates the reactive power and current harmonics of local loads, thus achieving complete power quality features.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125748901","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005580
Sushma Yadav, R. K. Mandal, G. K. Choudhary
Smart grid is an advancement of the existing electrical grid. The most important aspect of the future smart grid is decentralization of the existing electrical grid into number of smaller grids, which are also called as micro grids. The key feature of the smart grid is the amalgamation of distributed energy resources (DER) with the main grid. The extensive integration of distributed energy resources in power grid causes increase in the value of the fault current. Increased fault current is a serious trouble which has to be overcome for successful accomplishment of smart grids. Superconducting Fault Current Limiter (SFCL) is innovative equipment which has the potential to limit the fault current in the smart grid. It reduces the value of the fault current within first peak of the fault current. The suitable place of SFCL in the smart grid has to be described to obtain the benefit of its incorporation in the smart grid. In this paper the working of SFCL under normal and fault condition has been explained using matlab simulation and result of simulation is shown and for determining its appropriate location in the smart grid 10 MVA wind farm is integrated with the distribution network of the conventional power grid and three phase to ground fault is created at three different locations in the smart grid. For each created fault SFCL position is assessed in the grid to determine its most appropriate place in the grid i.e. place at which it provides maximum suppression of fault current from the wind farm as well as from the conventional power plant.
{"title":"Determination of appropriate location of superconducting fault current limiter in the smart grid","authors":"Sushma Yadav, R. K. Mandal, G. K. Choudhary","doi":"10.1109/ISEG.2014.7005580","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005580","url":null,"abstract":"Smart grid is an advancement of the existing electrical grid. The most important aspect of the future smart grid is decentralization of the existing electrical grid into number of smaller grids, which are also called as micro grids. The key feature of the smart grid is the amalgamation of distributed energy resources (DER) with the main grid. The extensive integration of distributed energy resources in power grid causes increase in the value of the fault current. Increased fault current is a serious trouble which has to be overcome for successful accomplishment of smart grids. Superconducting Fault Current Limiter (SFCL) is innovative equipment which has the potential to limit the fault current in the smart grid. It reduces the value of the fault current within first peak of the fault current. The suitable place of SFCL in the smart grid has to be described to obtain the benefit of its incorporation in the smart grid. In this paper the working of SFCL under normal and fault condition has been explained using matlab simulation and result of simulation is shown and for determining its appropriate location in the smart grid 10 MVA wind farm is integrated with the distribution network of the conventional power grid and three phase to ground fault is created at three different locations in the smart grid. For each created fault SFCL position is assessed in the grid to determine its most appropriate place in the grid i.e. place at which it provides maximum suppression of fault current from the wind farm as well as from the conventional power plant.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114596159","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005585
M. Subbarao, C. Babu, S. Satyanarayana, S. L. V. Sravan Kumar
In this paper Fuzzy Controller bases AC/DC converter is presented to drive LEDs with high power factor. Because of having of advantages of Integrated converters like increased system reliability and reduced number of controlled switches in this paper IBFC(Integrated Buck-Flyback Converter) is considered as a driver circuit to drive LEDs. novel ac-dc IBFC converter combines input current shaping, isolation and better output regulation into a single stage. In this paper Integrated buck-fly-back converter (IBFC) is a single stage AC/DC converter, operating in discontinuous conduction mode (DCM) to achieve high Power factor with fast output voltage regulation. In this paper charge control technique and fuzzy logic control technique has been implemented which has some advantage like mathematical modeling is easy, flexible and fuzzy logic can model nonlinear functions etc., Comparative analysis of conventional PI based voltage controller to fuzzy based voltage controller for 90-230V input, 48V Output and 200W ac-dc converter operating at 100 kHz is presented and MATLAB/SIMULINK is used for implementation and simulation results show the performance improvement of proposed controller.
{"title":"Fuzzy controlled single stage AC/DC converter with PFC to drive LEDs","authors":"M. Subbarao, C. Babu, S. Satyanarayana, S. L. V. Sravan Kumar","doi":"10.1109/ISEG.2014.7005585","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005585","url":null,"abstract":"In this paper Fuzzy Controller bases AC/DC converter is presented to drive LEDs with high power factor. Because of having of advantages of Integrated converters like increased system reliability and reduced number of controlled switches in this paper IBFC(Integrated Buck-Flyback Converter) is considered as a driver circuit to drive LEDs. novel ac-dc IBFC converter combines input current shaping, isolation and better output regulation into a single stage. In this paper Integrated buck-fly-back converter (IBFC) is a single stage AC/DC converter, operating in discontinuous conduction mode (DCM) to achieve high Power factor with fast output voltage regulation. In this paper charge control technique and fuzzy logic control technique has been implemented which has some advantage like mathematical modeling is easy, flexible and fuzzy logic can model nonlinear functions etc., Comparative analysis of conventional PI based voltage controller to fuzzy based voltage controller for 90-230V input, 48V Output and 200W ac-dc converter operating at 100 kHz is presented and MATLAB/SIMULINK is used for implementation and simulation results show the performance improvement of proposed controller.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132510152","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005389
K. Srinivas, S. Tulasi Ram
In this paper the proposed control algorithm for three phase four wire shunt active power filter (APF) compensate the unbalanced and non-linear loads. The control algorithm is implemented in MAT LAB environment to improve the power quality in distribution system. In this algorithm the theory of instantaneous symmetrical component used to extract a positive sequence of supply voltage to generated reference compensator currents under the assumptions of unbalanced and non stiff source voltages. The active power filter is implemented with pulse width modulation based current controlled voltage source inverter. The switching signals for VSI are generated through proposed three level hysteresis current controllers. The simulation results showing that the shunt active power filter is effectively compensating the supply current harmonics and reactive power at the point of common coupling.
{"title":"Three level hysteresis control of 3-phase, 4-wire shunt active power filter for harmonic compensation under unbalanced non stiff source","authors":"K. Srinivas, S. Tulasi Ram","doi":"10.1109/ISEG.2014.7005389","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005389","url":null,"abstract":"In this paper the proposed control algorithm for three phase four wire shunt active power filter (APF) compensate the unbalanced and non-linear loads. The control algorithm is implemented in MAT LAB environment to improve the power quality in distribution system. In this algorithm the theory of instantaneous symmetrical component used to extract a positive sequence of supply voltage to generated reference compensator currents under the assumptions of unbalanced and non stiff source voltages. The active power filter is implemented with pulse width modulation based current controlled voltage source inverter. The switching signals for VSI are generated through proposed three level hysteresis current controllers. The simulation results showing that the shunt active power filter is effectively compensating the supply current harmonics and reactive power at the point of common coupling.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126653108","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005620
B. D. Hari Kiran, M. S. Kumari
The increase in the production cost of electricity from conventional energy sources, led systems to look for cheaper and cleaner energy sources like wind and solar. Over past few years wind energy integration drew more attention in the electricity markets. But, due to uncertainties in wind energy forecasts and to maintain system under balance condition, additional services are required. Such additional services are named as Ancillary Services. This paper presents a scheduling methodology for thermal generators, under wind integration uncertainties to serve the demand, while providing a schedule for operating reserve (Ancillary Services). In this paper minimization of Operating cost objective is considered which includes thermal units fuel cost and cost paid to reserve, required due to intermittency in wind energy forecast. The uncertainties in wind are also considered, wind output is modelled using Weibull probability density function (PDF). Dynamic Programming method with Priority-list is used to schedule thermal units. The performance and feasibility of the projected method is illustrated with case studies on 6 and 10 thermal generators test systems, along with one wind generator is considered and results are found encouraging.
{"title":"Optimal generation scheduling with operating reserves including wind uncertainties","authors":"B. D. Hari Kiran, M. S. Kumari","doi":"10.1109/ISEG.2014.7005620","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005620","url":null,"abstract":"The increase in the production cost of electricity from conventional energy sources, led systems to look for cheaper and cleaner energy sources like wind and solar. Over past few years wind energy integration drew more attention in the electricity markets. But, due to uncertainties in wind energy forecasts and to maintain system under balance condition, additional services are required. Such additional services are named as Ancillary Services. This paper presents a scheduling methodology for thermal generators, under wind integration uncertainties to serve the demand, while providing a schedule for operating reserve (Ancillary Services). In this paper minimization of Operating cost objective is considered which includes thermal units fuel cost and cost paid to reserve, required due to intermittency in wind energy forecast. The uncertainties in wind are also considered, wind output is modelled using Weibull probability density function (PDF). Dynamic Programming method with Priority-list is used to schedule thermal units. The performance and feasibility of the projected method is illustrated with case studies on 6 and 10 thermal generators test systems, along with one wind generator is considered and results are found encouraging.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128130069","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005619
P. Sridhar, V. Purna Chandra Rao, B. Singh
A high potential fault current levels in power grid is not a new approach, and should eventually exceed, the limitation of short-circuit-current would be existed protection devices. Different to pricey system upgrades of protection devices, Fault Current Limiters (FCL's) gives an additional cost-efficient solutions to forestall recent protection devices and different instrumentality on the system from being broken by excessive fault currents. Evaluation of short circuit faults may usually the origin of voltage sags at a purpose of common coupling point (PCC) during a power network, the extent of the voltage sag is proportional to the short current level, reducing the fault current level at intervals the networks will scale back voltage sags throughout faults and defend sensitive loads that are interfaced to a similar PCC. The planned structure prevents voltage sag and counter balance the phase-angle of the PCC once fault prevalence. As a result, different feeders which are interlinked to the sub-station PCC can have attentive power quality. During this paper a high performance 3-phase fault current electrical model is planned. A Matlab/Simulink model is developed and simulation results are conferred. Finally a computer simulated results are conclusive through prototype design.
{"title":"Modeling, simulation and hardware implementation of fault current limiter in single phase and three phase lines for compensating voltage sag","authors":"P. Sridhar, V. Purna Chandra Rao, B. Singh","doi":"10.1109/ISEG.2014.7005619","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005619","url":null,"abstract":"A high potential fault current levels in power grid is not a new approach, and should eventually exceed, the limitation of short-circuit-current would be existed protection devices. Different to pricey system upgrades of protection devices, Fault Current Limiters (FCL's) gives an additional cost-efficient solutions to forestall recent protection devices and different instrumentality on the system from being broken by excessive fault currents. Evaluation of short circuit faults may usually the origin of voltage sags at a purpose of common coupling point (PCC) during a power network, the extent of the voltage sag is proportional to the short current level, reducing the fault current level at intervals the networks will scale back voltage sags throughout faults and defend sensitive loads that are interfaced to a similar PCC. The planned structure prevents voltage sag and counter balance the phase-angle of the PCC once fault prevalence. As a result, different feeders which are interlinked to the sub-station PCC can have attentive power quality. During this paper a high performance 3-phase fault current electrical model is planned. A Matlab/Simulink model is developed and simulation results are conferred. Finally a computer simulated results are conclusive through prototype design.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115480461","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005388
P. Raju, Trapti Jain
This paper presents a systematic way of developing a full dynamical linearized small signal state space model and stability analysis of an islanded AC microgrid with low inertial inverter interfaced DGs represented in the synchronous (DQ) reference frame. This AC microgrid accommodates four low inertial inverter interfaced DGs of unequal power ratings connected to each other through three lines and four loads such as resistive load, impedance load, constant power load and rectifier interfaced active load simultaneously, but connected at different nodes. To obtain the model systematically the whole AC microgrid system has been divided into the three sub-modules such as inverter sub-module, network sub-module and load sub-module. All the sub-modules are combined together on a common reference frame. The resulting state matrix of the islanded AC microgrid system has been utilized to obtain the eigenvalues (termed `modes').
{"title":"Small signal modelling and stability analysis of an islanded AC microgrid with inverter interfaced DGs","authors":"P. Raju, Trapti Jain","doi":"10.1109/ISEG.2014.7005388","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005388","url":null,"abstract":"This paper presents a systematic way of developing a full dynamical linearized small signal state space model and stability analysis of an islanded AC microgrid with low inertial inverter interfaced DGs represented in the synchronous (DQ) reference frame. This AC microgrid accommodates four low inertial inverter interfaced DGs of unequal power ratings connected to each other through three lines and four loads such as resistive load, impedance load, constant power load and rectifier interfaced active load simultaneously, but connected at different nodes. To obtain the model systematically the whole AC microgrid system has been divided into the three sub-modules such as inverter sub-module, network sub-module and load sub-module. All the sub-modules are combined together on a common reference frame. The resulting state matrix of the islanded AC microgrid system has been utilized to obtain the eigenvalues (termed `modes').","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130146740","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005588
R. Rao, J. Amarnath
Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), Very Fast Transient Over-voltages (VFTO) are generated, which will bring an instantaneous change in voltage with a very short rise time and it is normally followed by oscillation having high frequencies. This paper describes the variations of VFTO magnitudes transformer bushing of a 765 kV GIS during different switching operations have been calculated and compared by using EMTP.
{"title":"Analysis of VFTO across bushing in 765kV gas insulated substation using EMTP software","authors":"R. Rao, J. Amarnath","doi":"10.1109/ISEG.2014.7005588","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005588","url":null,"abstract":"Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), Very Fast Transient Over-voltages (VFTO) are generated, which will bring an instantaneous change in voltage with a very short rise time and it is normally followed by oscillation having high frequencies. This paper describes the variations of VFTO magnitudes transformer bushing of a 765 kV GIS during different switching operations have been calculated and compared by using EMTP.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129384947","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 : 2014-09-01DOI: 10.1109/ISEG.2014.7005618
S. Satyanarayana, R. Sharma, Mukta, Anil Kumar Sappa
This paper is proposed to show the interaction between the LFC and the AVR loops in the Power Plant. The combinational effects of these two LFC and AVR loops are studied by extending the linear zed AGC system. A complete system model for LFC with Speed Governor, Turbine, Integral controller and Power System and AVR with Excitation System and PID controllers are described. LFC is for regulation of system frequency. It is also called a power factor control loop and influence the active power balances in the power system network. The LFC is achieved by the speed-governor mechanism. The basic principle of the speed-governor mechanism is to adjust itself as per the load variations. The voltage of the generator is proportional to the speed and excitation of the generator. If the speed is kept at constant, then the excitation system is used to control the voltage. The voltage control is also called as an excitation control system. This combined model is tested with conventional PID Controller, PID with Power System Stabilizer and Fuzzy-PID with Power System Stabilizer. The results are shown by using simulation; this will be reachable in dynamic and steady state responses.
{"title":"Automatic generation control in power plant using PID, PSS and Fuzzy-PID controller","authors":"S. Satyanarayana, R. Sharma, Mukta, Anil Kumar Sappa","doi":"10.1109/ISEG.2014.7005618","DOIUrl":"https://doi.org/10.1109/ISEG.2014.7005618","url":null,"abstract":"This paper is proposed to show the interaction between the LFC and the AVR loops in the Power Plant. The combinational effects of these two LFC and AVR loops are studied by extending the linear zed AGC system. A complete system model for LFC with Speed Governor, Turbine, Integral controller and Power System and AVR with Excitation System and PID controllers are described. LFC is for regulation of system frequency. It is also called a power factor control loop and influence the active power balances in the power system network. The LFC is achieved by the speed-governor mechanism. The basic principle of the speed-governor mechanism is to adjust itself as per the load variations. The voltage of the generator is proportional to the speed and excitation of the generator. If the speed is kept at constant, then the excitation system is used to control the voltage. The voltage control is also called as an excitation control system. This combined model is tested with conventional PID Controller, PID with Power System Stabilizer and Fuzzy-PID with Power System Stabilizer. The results are shown by using simulation; this will be reachable in dynamic and steady state responses.","PeriodicalId":105826,"journal":{"name":"2014 International Conference on Smart Electric Grid (ISEG)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115222934","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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