Pub Date : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229614
M. Jalaluddin, H. .. Saikumar, Bansilal
Power system operates under secure state. Any disturbance in terms of fault or major load change introduces oscillations in the power system. These oscillations cause stability problems, if not damped in short span of time. In a multi machine power system the rotor swing between generators makes the problem more complicated. In this paper Fuzzy Logic based Power System Stabilizer (FLPSS) is designed to damp the low frequency oscillations arising out of small and large disturbances in multi machine system. FLPSS is designed with speed deviation and rotor acceleration as input signals. The novelty about the work reported in this paper is that nine linguistic variables are considered to design the FLPSS. A four machine, two-area system is considered to validate the design of the proposed FLPSS. The superiority of the FLPSS is demonstrated by comparing its performance with that of a Conventional PSS (CPSS) by carrying out nonlinear simulation on the multi machine.
{"title":"Performance evaluation of multi machine power system with Fuzzy based Power System Stabilizer","authors":"M. Jalaluddin, H. .. Saikumar, Bansilal","doi":"10.1109/TAPENERGY.2015.7229614","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229614","url":null,"abstract":"Power system operates under secure state. Any disturbance in terms of fault or major load change introduces oscillations in the power system. These oscillations cause stability problems, if not damped in short span of time. In a multi machine power system the rotor swing between generators makes the problem more complicated. In this paper Fuzzy Logic based Power System Stabilizer (FLPSS) is designed to damp the low frequency oscillations arising out of small and large disturbances in multi machine system. FLPSS is designed with speed deviation and rotor acceleration as input signals. The novelty about the work reported in this paper is that nine linguistic variables are considered to design the FLPSS. A four machine, two-area system is considered to validate the design of the proposed FLPSS. The superiority of the FLPSS is demonstrated by comparing its performance with that of a Conventional PSS (CPSS) by carrying out nonlinear simulation on the multi machine.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"54 1","pages":"182-186"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79110319","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229613
David G Philip, A. Rajendran
Distance relays are the vital protective device used for the protection of power transmission lines. The paper presents the development of a numerical distance relay, based on characteristics for the transmission line protection. The relay is developed on the conic and quadrilateral characteristics. It is intended to combine both the characteristics, so that, the protection scheme would exclude most of the conditions for which tripping is undesirable (arc resistances and power swings). The Conic - Quadrilateral characteristics have been plotted and the relay is tested by injecting faults. The developed characteristics contained the faults that occurred within the reach of the relay setting. The relaying logic is coded in MATLAB and the transmission system is simulated in Simulink. The result shows that the Multi Characteristic relaying scheme is highly suitable for protection of medium, high and extra high voltage transmission line during faults.
{"title":"Development of a Multi-characteristic Distance Relay","authors":"David G Philip, A. Rajendran","doi":"10.1109/TAPENERGY.2015.7229613","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229613","url":null,"abstract":"Distance relays are the vital protective device used for the protection of power transmission lines. The paper presents the development of a numerical distance relay, based on characteristics for the transmission line protection. The relay is developed on the conic and quadrilateral characteristics. It is intended to combine both the characteristics, so that, the protection scheme would exclude most of the conditions for which tripping is undesirable (arc resistances and power swings). The Conic - Quadrilateral characteristics have been plotted and the relay is tested by injecting faults. The developed characteristics contained the faults that occurred within the reach of the relay setting. The relaying logic is coded in MATLAB and the transmission system is simulated in Simulink. The result shows that the Multi Characteristic relaying scheme is highly suitable for protection of medium, high and extra high voltage transmission line during faults.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"66 1","pages":"176-181"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74104552","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229589
S. Aneesh, T. S. Angel
Quadrilateral relay provides flexible protection during high fault resistance of ground and phase faults. This is advantageous for protection of phase-to-earth faults on short lines, non-effectively earthed systems and feeders with extremely high tower footing resistance. It also provides fault impedance coverage for both phase to phase and phase to ground faults. The proposed work intends the development of a numerical quadrilateral distance relay that can retain its function even under a major change in system configuration. The proposed relaying scheme is analyzed by coding the relay logic and simulating the system with transmission network in MATLAB/Simulink. Different factors influencing the performance of quadrilateral relay are studied and verified. It is observed that the scheme is adaptive to the system variations and mal trips are reduced.
{"title":"Quadrilateral relay based distance protection scheme for transmission lines under varying system conditions","authors":"S. Aneesh, T. S. Angel","doi":"10.1109/TAPENERGY.2015.7229589","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229589","url":null,"abstract":"Quadrilateral relay provides flexible protection during high fault resistance of ground and phase faults. This is advantageous for protection of phase-to-earth faults on short lines, non-effectively earthed systems and feeders with extremely high tower footing resistance. It also provides fault impedance coverage for both phase to phase and phase to ground faults. The proposed work intends the development of a numerical quadrilateral distance relay that can retain its function even under a major change in system configuration. The proposed relaying scheme is analyzed by coding the relay logic and simulating the system with transmission network in MATLAB/Simulink. Different factors influencing the performance of quadrilateral relay are studied and verified. It is observed that the scheme is adaptive to the system variations and mal trips are reduced.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"21 1","pages":"35-39"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89739820","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229617
P. Sebastian, Pramod Antony DSa
This paper presents a method for the classification of common Power Quality(PQ) events. The described system for the characterization of disturbances is based on wavelet based feature extraction. The amount of data to be analyzed and how the data can be interpreted are of crucial importance in power quality analysis. Wavelet Transform(WT) has been widely used in power quality signal analysis. The advantage of wavelet transform is it can provide precise time information of power quality events and has many advantages over traditional signal analysis approaches. In this paper Discrete Wavelet Transform(DWT) is used for obtaining the energy distribution from simulated signals. The system is developed with Neural Network which is an effective tool in classification of signals in power systems.
{"title":"A Neural Network based power quality signal classification system using wavelet energy distribution","authors":"P. Sebastian, Pramod Antony DSa","doi":"10.1109/TAPENERGY.2015.7229617","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229617","url":null,"abstract":"This paper presents a method for the classification of common Power Quality(PQ) events. The described system for the characterization of disturbances is based on wavelet based feature extraction. The amount of data to be analyzed and how the data can be interpreted are of crucial importance in power quality analysis. Wavelet Transform(WT) has been widely used in power quality signal analysis. The advantage of wavelet transform is it can provide precise time information of power quality events and has many advantages over traditional signal analysis approaches. In this paper Discrete Wavelet Transform(DWT) is used for obtaining the energy distribution from simulated signals. The system is developed with Neural Network which is an effective tool in classification of signals in power systems.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"6 1","pages":"199-204"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89704669","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229651
G. Gireesh, P. Seema
SEPIC Converter is a fourth order non-linear system and hence non-linear control strategies are more suitable to apply for it. When the SEPIC operates at very high switching frequency, it is essential to limit the computation time lower than the switching period. Sliding Mode Control (SMC) meet this objective. This paper presents a PWM based Integral Sliding Mode Control Strategy for controlling the output voltage of SEPIC converter. The present control methods for SEPIC converter are based on linear control approaches which are critical in low power application areas consuming more power since they require more processing time to run. The proposed control strategy is developed using the hybrid model of SEPIC converter with the state space averaging technique. The equivalent control law is derived and the control model is simulated in MATLAB/SIMULINK and the desired response is obtained.
{"title":"High frequency SEPIC Converter with PWM Integral Sliding Mode Control","authors":"G. Gireesh, P. Seema","doi":"10.1109/TAPENERGY.2015.7229651","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229651","url":null,"abstract":"SEPIC Converter is a fourth order non-linear system and hence non-linear control strategies are more suitable to apply for it. When the SEPIC operates at very high switching frequency, it is essential to limit the computation time lower than the switching period. Sliding Mode Control (SMC) meet this objective. This paper presents a PWM based Integral Sliding Mode Control Strategy for controlling the output voltage of SEPIC converter. The present control methods for SEPIC converter are based on linear control approaches which are critical in low power application areas consuming more power since they require more processing time to run. The proposed control strategy is developed using the hybrid model of SEPIC converter with the state space averaging technique. The equivalent control law is derived and the control model is simulated in MATLAB/SIMULINK and the desired response is obtained.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"1 1","pages":"393-397"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90861942","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229603
K. Gopinathan, I. Mamatha
Current fed push pull converters are widely used in electronic ballast circuits, telecommunication industries and satellite applications. In this work, a current fed push pull converter which can be powered by solar PV or conventional single phase ac supply is proposed. A current fed push pull acts as an isolated boost converter and needs only a single input inductor. To enhance the significance of a buck stage prior to push pull stage, comparison of a current fed push pull converter with that of a buck current fed push pull is carried out. Buck pre-regulator reduces the voltage stress of the push pull switches. In addition, it is sufficient to modulate the width of the pulse fed to buck stage while maintaining the pulse width of the switches of push pull stage constant. In the proposed design, average current mode control is preferred as it has noise immunity and do not require slope compensation. Based on the input ac supply and readings from a 20W solar panel, a 20W, 100V, 0.2A cascaded buck push pull converter is designed and simulated using PSIM. The control circuit for closed loop simulation is obtained using PSIM smart control.
{"title":"Pre-regulated push pull converter for hybrid energy systems","authors":"K. Gopinathan, I. Mamatha","doi":"10.1109/TAPENERGY.2015.7229603","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229603","url":null,"abstract":"Current fed push pull converters are widely used in electronic ballast circuits, telecommunication industries and satellite applications. In this work, a current fed push pull converter which can be powered by solar PV or conventional single phase ac supply is proposed. A current fed push pull acts as an isolated boost converter and needs only a single input inductor. To enhance the significance of a buck stage prior to push pull stage, comparison of a current fed push pull converter with that of a buck current fed push pull is carried out. Buck pre-regulator reduces the voltage stress of the push pull switches. In addition, it is sufficient to modulate the width of the pulse fed to buck stage while maintaining the pulse width of the switches of push pull stage constant. In the proposed design, average current mode control is preferred as it has noise immunity and do not require slope compensation. Based on the input ac supply and readings from a 20W solar panel, a 20W, 100V, 0.2A cascaded buck push pull converter is designed and simulated using PSIM. The control circuit for closed loop simulation is obtained using PSIM smart control.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"24 1","pages":"121-126"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90214780","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229659
A. Rajeev, T. S. Angel, F. Khan
Instrumenting power networks with phasor measurement units (PMUs) facilitates several tasks including optimum power flow, system control, contingency analysis, fault detection etc. For the above purposes, PMU's are not required to place in all the bus in a power system. Also because of higher cost, optimal placement of PMU's are done by using the binary search algorithm. The algorithm for optimal placement is tested for a 7 bus and standard IEEE 14 & 30 bus systems. Once the PMU's are placed optimally, the next step involved is the fault location and diagnosis scheme which is capable of accurately identifying the location of a fault upon its occurrence. The proposed fault location method can be used to identify the fault in both ring and radial type distribution feeders. This scheme consists of three independent steps which are running parallel to obtain the exact location of the fault. The proposed algorithm is tested for eight different faults in an 11 bus radial test system and a 14 bus ring system.
{"title":"Fault location in distribution feeders with optimally placed PMU's","authors":"A. Rajeev, T. S. Angel, F. Khan","doi":"10.1109/TAPENERGY.2015.7229659","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229659","url":null,"abstract":"Instrumenting power networks with phasor measurement units (PMUs) facilitates several tasks including optimum power flow, system control, contingency analysis, fault detection etc. For the above purposes, PMU's are not required to place in all the bus in a power system. Also because of higher cost, optimal placement of PMU's are done by using the binary search algorithm. The algorithm for optimal placement is tested for a 7 bus and standard IEEE 14 & 30 bus systems. Once the PMU's are placed optimally, the next step involved is the fault location and diagnosis scheme which is capable of accurately identifying the location of a fault upon its occurrence. The proposed fault location method can be used to identify the fault in both ring and radial type distribution feeders. This scheme consists of three independent steps which are running parallel to obtain the exact location of the fault. The proposed algorithm is tested for eight different faults in an 11 bus radial test system and a 14 bus ring system.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"56 1","pages":"438-442"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89023073","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229630
J. Freeman, K. Keerthi, L. R. Chandran
The alarming energy crisis, heightened by the continuing depletion of fossil fuels, accentuates the need for the development of renewable energy technology, knowledge, and infrastructure. A Central Receiver (Power Tower) Solar Energy system uses heliostats (motorized planar reflectors) to continuously reflect direct radiation from the sun onto a central receiver. This paper discusses a novel closed loop control system for a heliostat field. In this system, rough adjustment of the heliostat is performed using an Inertial Measurement Unit (IMU). Precision adjustment of the heliostat is performed by inducing a small mechanical vibration in the heliostat's reflective surface, using a piezoelectric actuator. This vibration creates time-dependent changes in the light waves reflected from the heliostat, which can be detected by photo-sensors surrounding the thermal receiver target. The position of misaligned heliostats can be corrected once they are identified by FFT analysis of the light waves received by the photo-sensors. This technique can, in principle, control thousands of heliostats simultaneously. The control system is coded using MATLAB.
{"title":"Closed loop control system for a heliostat field","authors":"J. Freeman, K. Keerthi, L. R. Chandran","doi":"10.1109/TAPENERGY.2015.7229630","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229630","url":null,"abstract":"The alarming energy crisis, heightened by the continuing depletion of fossil fuels, accentuates the need for the development of renewable energy technology, knowledge, and infrastructure. A Central Receiver (Power Tower) Solar Energy system uses heliostats (motorized planar reflectors) to continuously reflect direct radiation from the sun onto a central receiver. This paper discusses a novel closed loop control system for a heliostat field. In this system, rough adjustment of the heliostat is performed using an Inertial Measurement Unit (IMU). Precision adjustment of the heliostat is performed by inducing a small mechanical vibration in the heliostat's reflective surface, using a piezoelectric actuator. This vibration creates time-dependent changes in the light waves reflected from the heliostat, which can be detected by photo-sensors surrounding the thermal receiver target. The position of misaligned heliostats can be corrected once they are identified by FFT analysis of the light waves received by the photo-sensors. This technique can, in principle, control thousands of heliostats simultaneously. The control system is coded using MATLAB.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"1 1","pages":"272-277"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75124497","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229662
C. Chandran, L. R. Chandran
Now-a-days the usage of power electronic systems has expanded to new and wide application range but the presence of harmonics is a major problem. The nonlinear operation of power semi converters and presence of bridge rectifiers in electronic devices for AC-DC conversion resulted in a high Total Harmonic Distortion (THD) and low Power Factor (PF). Thus there arise the need for a power factor correction circuit along with the power converters for limiting the allowable harmonics on the power lines, and hence to improve the power factor. This paper aims to develop an active power factor correction (PFC) for single phase AC/DC converter, along with a Two Switch Buck- Boost converter. The converter is designed for a load of 1kW at 220V.
{"title":"Two Switch Buck Boost converter for Power Factor correction","authors":"C. Chandran, L. R. Chandran","doi":"10.1109/TAPENERGY.2015.7229662","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229662","url":null,"abstract":"Now-a-days the usage of power electronic systems has expanded to new and wide application range but the presence of harmonics is a major problem. The nonlinear operation of power semi converters and presence of bridge rectifiers in electronic devices for AC-DC conversion resulted in a high Total Harmonic Distortion (THD) and low Power Factor (PF). Thus there arise the need for a power factor correction circuit along with the power converters for limiting the allowable harmonics on the power lines, and hence to improve the power factor. This paper aims to develop an active power factor correction (PFC) for single phase AC/DC converter, along with a Two Switch Buck- Boost converter. The converter is designed for a load of 1kW at 220V.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"420 1","pages":"454-459"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77381228","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 : 2015-06-24DOI: 10.1109/TAPENERGY.2015.7229644
V. Mohan, J. Singh, W. Ongsakul, S. G. Nair
In this paper, an efficient online energy management problem for a liberalized microgrid market model is formulated. Online optimal power dispatch problem solved by particle swarm optimization with time varying acceleration co-efficient (PSO-TVAC) and backward-forward sweep power flow is used to manage the microgrid sources and loads, considering fuel and emission costs of distributed energy resources (DERs), hourly profits, load curtailment and buying/selling of power from/to the main grid. Instantaneous measured data of demand and renewable energy are used to optimally dispatch the conventional DERs, trade the grid power and curtail the selected loads to satisfy the power balance in the online mode. The effectiveness of the formulated problem and the proposed method is investigated on the residential feeder of the LV benchmark radial microgrid in terms of fuel cost, emission, voltage deviation, curtailed load, upstream grid power traded and overall execution time. Two different objectives of the microgrid central controller (MGCC) based on different levels of participation in the open market are compared viz. ;overall profit maximization ; and operational cost minimization.
{"title":"Online benefit optimization in a liberalized/free microgrid market model","authors":"V. Mohan, J. Singh, W. Ongsakul, S. G. Nair","doi":"10.1109/TAPENERGY.2015.7229644","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229644","url":null,"abstract":"In this paper, an efficient online energy management problem for a liberalized microgrid market model is formulated. Online optimal power dispatch problem solved by particle swarm optimization with time varying acceleration co-efficient (PSO-TVAC) and backward-forward sweep power flow is used to manage the microgrid sources and loads, considering fuel and emission costs of distributed energy resources (DERs), hourly profits, load curtailment and buying/selling of power from/to the main grid. Instantaneous measured data of demand and renewable energy are used to optimally dispatch the conventional DERs, trade the grid power and curtail the selected loads to satisfy the power balance in the online mode. The effectiveness of the formulated problem and the proposed method is investigated on the residential feeder of the LV benchmark radial microgrid in terms of fuel cost, emission, voltage deviation, curtailed load, upstream grid power traded and overall execution time. Two different objectives of the microgrid central controller (MGCC) based on different levels of participation in the open market are compared viz. ;overall profit maximization ; and operational cost minimization.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"13 1","pages":"351-356"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72551255","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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