Pub Date : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028861
Antti Alahaivala, O. Kilkki, M. Degefa, I. Seilonen, M. Lehtonen
Demand-side is becoming more active in various power system operations as it is able to provide the system with extra flexibility to balance the volatility of the generation-side. Suggested applications can vary from short term emergency control to participation in a day-ahead market. In order to improve the presence of demand response in these operations, this paper describes a virtual power plant (VPP) for domestic heating load aggregation. The main contribution is to introduce the three states of VPP operation: normal, emergency and restoration that allow loads to participate in the maintaining of consumption-generation balance in different time scales. Furthermore, the study discusses a multi-agent system (MAS) approach to implement the proposed VPP. The VPP operation is demonstrated and tested by dynamic simulations.
{"title":"A virtual power plant for the aggregation of domestic heating load flexibility","authors":"Antti Alahaivala, O. Kilkki, M. Degefa, I. Seilonen, M. Lehtonen","doi":"10.1109/ISGTEUROPE.2014.7028861","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028861","url":null,"abstract":"Demand-side is becoming more active in various power system operations as it is able to provide the system with extra flexibility to balance the volatility of the generation-side. Suggested applications can vary from short term emergency control to participation in a day-ahead market. In order to improve the presence of demand response in these operations, this paper describes a virtual power plant (VPP) for domestic heating load aggregation. The main contribution is to introduce the three states of VPP operation: normal, emergency and restoration that allow loads to participate in the maintaining of consumption-generation balance in different time scales. Furthermore, the study discusses a multi-agent system (MAS) approach to implement the proposed VPP. The VPP operation is demonstrated and tested by dynamic simulations.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126334083","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028893
Q. Wei, Weimin Guo, Xueshan Han, Tianya Li, Ming Yang
For the time being, the absolute rotor angle of every generator is changing from time to time, so it's less likely to improve transient stability by use of rotor angle measurement. Things are no longer so after absolute rotor angle controllers are deployed across the power system. The frequency of the power system will remain constant, and the absolute rotor angle of every generator will be kept at the aim value given by dispatching center most of the time. After fault happens, every generator can know its position in entire system through local PMU (phasor measurement unit) measurement. The angle controller can then give order to turbine valve or power electronic braking devices to accelerate or decelerate the generator rotor so that it comes back to its original position. Consequently, stability and order will be restored. The changing magnitude of turbine valve is restricted in the angle controller, so there is no damage to thermal system. Besides, valve operation and dynamic braking can be integrated seamlessly to get better results. Simulations results show that this principle can increase critical fault-clearing time and transient stability in both SMIB and multi machine system.
{"title":"Analysis on the effect of rotor angle control for transient stability enhancement","authors":"Q. Wei, Weimin Guo, Xueshan Han, Tianya Li, Ming Yang","doi":"10.1109/ISGTEUROPE.2014.7028893","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028893","url":null,"abstract":"For the time being, the absolute rotor angle of every generator is changing from time to time, so it's less likely to improve transient stability by use of rotor angle measurement. Things are no longer so after absolute rotor angle controllers are deployed across the power system. The frequency of the power system will remain constant, and the absolute rotor angle of every generator will be kept at the aim value given by dispatching center most of the time. After fault happens, every generator can know its position in entire system through local PMU (phasor measurement unit) measurement. The angle controller can then give order to turbine valve or power electronic braking devices to accelerate or decelerate the generator rotor so that it comes back to its original position. Consequently, stability and order will be restored. The changing magnitude of turbine valve is restricted in the angle controller, so there is no damage to thermal system. Besides, valve operation and dynamic braking can be integrated seamlessly to get better results. Simulations results show that this principle can increase critical fault-clearing time and transient stability in both SMIB and multi machine system.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126540579","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028800
V. Kiray, Taner Topal, L. Sagbansua, I. Atacak
A unique system that will enable the efficient and shared usage of PV panels in multi-apartment complexes and sharing of energy is developed in this study along with a modeling scheme. Efficient and shared usage of the panels which is suggested as the solution requires sharing and pricing the energy in the apartment complex. In this modeling study which is conducted in Matlab and Simulink environment, the available energy is initially allocated for all the apartments and has them use it for free. The modeled system is applied to a three-apartment complex and the simulation results are obtained based on the electricity pricing tariff in Turkey. The amounts reflected in the electricity bill in the cases where the solar energy used and not used are calculated separately and compared later in the experimental results. It is demonstrated that the shared energy of the apartment complex can be allocated in an efficient and fair way. Moreover, it is proved that the budget generated by using the cheap energy can pay off the fix costs such as battery charge and renewal costs.
{"title":"A modelling study of renewable and stored energy sharing and pricing management system developed for multi-apartment complexes","authors":"V. Kiray, Taner Topal, L. Sagbansua, I. Atacak","doi":"10.1109/ISGTEUROPE.2014.7028800","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028800","url":null,"abstract":"A unique system that will enable the efficient and shared usage of PV panels in multi-apartment complexes and sharing of energy is developed in this study along with a modeling scheme. Efficient and shared usage of the panels which is suggested as the solution requires sharing and pricing the energy in the apartment complex. In this modeling study which is conducted in Matlab and Simulink environment, the available energy is initially allocated for all the apartments and has them use it for free. The modeled system is applied to a three-apartment complex and the simulation results are obtained based on the electricity pricing tariff in Turkey. The amounts reflected in the electricity bill in the cases where the solar energy used and not used are calculated separately and compared later in the experimental results. It is demonstrated that the shared energy of the apartment complex can be allocated in an efficient and fair way. Moreover, it is proved that the budget generated by using the cheap energy can pay off the fix costs such as battery charge and renewal costs.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125664792","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028803
D. He, Di Shi, Ratnesh K. Sharma
The centralized hierarchical control strategy has recently drawn much attention from researchers in the microgrid area. Primary control deals with power sharing among distributed generators (DGs). Secondary control is responsible for restoring the voltage and frequency back to their nominal values. However, there are two factors that presently limit the implementation of existing hierarchical control in a microgrid. First, the accuracy of reactive power sharing is low due to the difference in each DG's terminal voltage. Second, centralized high-bandwidth communication infrastructure is required, which is expensive and fragile, especially with high penetration of DGs. This paper presents a distributed cooperative control framework, which not only regulate the voltage at the critical bus, but also realize accurate reactive power sharing among DGs, using sparse communication with significantly lower bandwidth requirement. The proposed method is adaptive to network topology changes which supports the plug-and-play feature of microgrid. Performance of the proposed control is demonstrated through simulation results on a 4-bus microgrid testbed.
{"title":"Consensus-based distributed cooperative control for microgrid voltage regulation and reactive power sharing","authors":"D. He, Di Shi, Ratnesh K. Sharma","doi":"10.1109/ISGTEUROPE.2014.7028803","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028803","url":null,"abstract":"The centralized hierarchical control strategy has recently drawn much attention from researchers in the microgrid area. Primary control deals with power sharing among distributed generators (DGs). Secondary control is responsible for restoring the voltage and frequency back to their nominal values. However, there are two factors that presently limit the implementation of existing hierarchical control in a microgrid. First, the accuracy of reactive power sharing is low due to the difference in each DG's terminal voltage. Second, centralized high-bandwidth communication infrastructure is required, which is expensive and fragile, especially with high penetration of DGs. This paper presents a distributed cooperative control framework, which not only regulate the voltage at the critical bus, but also realize accurate reactive power sharing among DGs, using sparse communication with significantly lower bandwidth requirement. The proposed method is adaptive to network topology changes which supports the plug-and-play feature of microgrid. Performance of the proposed control is demonstrated through simulation results on a 4-bus microgrid testbed.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129825156","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028912
S. Skarvelis-Kazakos, P. Papadopoulos, I. Unda
An approach is presented for controlling multiple energy carriers, such as AC and DC electricity, heat, Natural Gas, hydrogen, using the control technique of multi-agent systems. The main elements of a hierarchical control system are given and their integration with the concept of energy hubs is explained. The interactions between the different agents are described. Electric vehicles are considered as mobile resources within the overall system. Finally, the benefits of this approach are laid out.
{"title":"Agent-based control of multiple energy carriers and energy hubs","authors":"S. Skarvelis-Kazakos, P. Papadopoulos, I. Unda","doi":"10.1109/ISGTEUROPE.2014.7028912","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028912","url":null,"abstract":"An approach is presented for controlling multiple energy carriers, such as AC and DC electricity, heat, Natural Gas, hydrogen, using the control technique of multi-agent systems. The main elements of a hierarchical control system are given and their integration with the concept of energy hubs is explained. The interactions between the different agents are described. Electric vehicles are considered as mobile resources within the overall system. Finally, the benefits of this approach are laid out.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129747722","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028963
Mohammed M. Farag, M. Azab, B. Mokhtar
Security is a major challenge preventing wide deployment of the smart grid technology. Typically, the classical power grid is protected with a set of isolated security tools applied to individual grid components and layers ignoring their cross-layer interaction. Such an approach does not address the smart grid security requirements because usually intricate attacks are cross-layer exploiting multiple vulnerabilities at various grid layers and domains. We advance a conceptual layering model of the smart grid and a high-level overview of a security framework, termed CyNetPhy, towards enabling cross-layer security of the smart grid. CyNetPhy tightly integrates and coordinates between three interrelated, and highly cooperative real-time security systems crossing section various layers of the grid cyber and physical domains to simultaneously address the grid's operational and security requirements. In this article, we present in detail the physical security layer (PSL) in CyNetPhy. We describe an attack scenario raising the emerging hardware Trojan threat in process control systems (PCSes) and its novel PSL resolution leveraging the model predictive control principles. Initial simulation results illustrate the feasibility and effectiveness of the PSL.
{"title":"Cross-layer security framework for smart grid: Physical security layer","authors":"Mohammed M. Farag, M. Azab, B. Mokhtar","doi":"10.1109/ISGTEUROPE.2014.7028963","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028963","url":null,"abstract":"Security is a major challenge preventing wide deployment of the smart grid technology. Typically, the classical power grid is protected with a set of isolated security tools applied to individual grid components and layers ignoring their cross-layer interaction. Such an approach does not address the smart grid security requirements because usually intricate attacks are cross-layer exploiting multiple vulnerabilities at various grid layers and domains. We advance a conceptual layering model of the smart grid and a high-level overview of a security framework, termed CyNetPhy, towards enabling cross-layer security of the smart grid. CyNetPhy tightly integrates and coordinates between three interrelated, and highly cooperative real-time security systems crossing section various layers of the grid cyber and physical domains to simultaneously address the grid's operational and security requirements. In this article, we present in detail the physical security layer (PSL) in CyNetPhy. We describe an attack scenario raising the emerging hardware Trojan threat in process control systems (PCSes) and its novel PSL resolution leveraging the model predictive control principles. Initial simulation results illustrate the feasibility and effectiveness of the PSL.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128632549","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028934
E. Al-Ammar
One of the challenges faced by the smart grid technologies is to encourage the power utilities in order to ensure their power generations are efficient with reduced amount of pollutants emission. An efficient utilization of energy resources can be possible by tri-generation. As compared to conventional power generation, one of the goals of tri-generation is the efficient utilization of available fossil fuel and thereby reducing the pollutants emitted from the thermal plants. The use of tri-generation output along with solar power can increase the possibility of such goal while dispatching a certain amount of power demand. Such a hybrid power generation method is very effective in countries like Saudi Arabia since it is abundant with fossil fuels as well as solar energy resources. A comparative study of tri-generation with conventional generation of electric and thermal power is carried out in this paper. Moreover, an optimum power dispatch with tri-generation along with solar power is analyzed. The environmental benefits obtained while utilizing energy resources through tri-generation is also discussed in this paper. Reduction in pollutants emissions from power plants decreases the undesirable environmental effects and damages; hence tri-generation facilitates environmental friendly power production.
{"title":"Tri-generation and solar power for an efficient and environmental friendly power generation","authors":"E. Al-Ammar","doi":"10.1109/ISGTEUROPE.2014.7028934","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028934","url":null,"abstract":"One of the challenges faced by the smart grid technologies is to encourage the power utilities in order to ensure their power generations are efficient with reduced amount of pollutants emission. An efficient utilization of energy resources can be possible by tri-generation. As compared to conventional power generation, one of the goals of tri-generation is the efficient utilization of available fossil fuel and thereby reducing the pollutants emitted from the thermal plants. The use of tri-generation output along with solar power can increase the possibility of such goal while dispatching a certain amount of power demand. Such a hybrid power generation method is very effective in countries like Saudi Arabia since it is abundant with fossil fuels as well as solar energy resources. A comparative study of tri-generation with conventional generation of electric and thermal power is carried out in this paper. Moreover, an optimum power dispatch with tri-generation along with solar power is analyzed. The environmental benefits obtained while utilizing energy resources through tri-generation is also discussed in this paper. Reduction in pollutants emissions from power plants decreases the undesirable environmental effects and damages; hence tri-generation facilitates environmental friendly power production.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130598386","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028824
Robert Rogersten, L. Vanfretti, Wei Li, Lidong Zhang, P. Mitra
Voltage-Source Converter-Based High-voltage dc (VSC-HVdc) technology has received growing interest during recent years due to its benefits for separated active and reactive power control. Before the installation of VSC-HVdc links, different simulation-based studies need to be performed, usually by different parties and using different electromagnetic transient (EMT) simulation platforms. This paper provides a systematic method to assess discrepancies between simulation tools. Models of the VSC and its control systems are implemented from scratch in two different tools. A metric and a methodology to quantitatively assess the discrepancies between simulation results is proposed and illustrated. The paper shows that even with a pedantic re-implementation of the models from the ground up, simulation results are still inconsistent. The objective of this paper is to develop a quantification method for comparing the models developed in different EMT simulation tool and to emphasize differences that can arise with the numerical solvers in such tools.
{"title":"A quantitative method for the assessment of VSC-HVdc controller simulations in EMT tools","authors":"Robert Rogersten, L. Vanfretti, Wei Li, Lidong Zhang, P. Mitra","doi":"10.1109/ISGTEUROPE.2014.7028824","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028824","url":null,"abstract":"Voltage-Source Converter-Based High-voltage dc (VSC-HVdc) technology has received growing interest during recent years due to its benefits for separated active and reactive power control. Before the installation of VSC-HVdc links, different simulation-based studies need to be performed, usually by different parties and using different electromagnetic transient (EMT) simulation platforms. This paper provides a systematic method to assess discrepancies between simulation tools. Models of the VSC and its control systems are implemented from scratch in two different tools. A metric and a methodology to quantitatively assess the discrepancies between simulation results is proposed and illustrated. The paper shows that even with a pedantic re-implementation of the models from the ground up, simulation results are still inconsistent. The objective of this paper is to develop a quantification method for comparing the models developed in different EMT simulation tool and to emphasize differences that can arise with the numerical solvers in such tools.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127671256","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028932
E. Ciapessoni, D. Cirio, A. Pitto, S. Massucco, F. Silvestro
Power system security assessment techniques can greatly benefit from the adoption of probabilistic approaches, as these can thoroughly describe the effect of uncertainties on the operating condition. The paper proposes a methodology to evaluate the probability of exceeding operational constraints under normal and contingency situations, accounting for uncertain, correlated power injections. In the proposed methodology, an analytical technique for probabilistic power flow is combined with copulas, the latter being introduced to deal with correlations. Copulas allow representing in an effective way the correlation information among variables, i.e. the multi-variate distributions of stochastic variables. A test system based on a realistic transmission network is used to exemplify the method.
{"title":"A novel approach to account for uncertainty and correlations in probabilistic power flow","authors":"E. Ciapessoni, D. Cirio, A. Pitto, S. Massucco, F. Silvestro","doi":"10.1109/ISGTEUROPE.2014.7028932","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028932","url":null,"abstract":"Power system security assessment techniques can greatly benefit from the adoption of probabilistic approaches, as these can thoroughly describe the effect of uncertainties on the operating condition. The paper proposes a methodology to evaluate the probability of exceeding operational constraints under normal and contingency situations, accounting for uncertain, correlated power injections. In the proposed methodology, an analytical technique for probabilistic power flow is combined with copulas, the latter being introduced to deal with correlations. Copulas allow representing in an effective way the correlation information among variables, i.e. the multi-variate distributions of stochastic variables. A test system based on a realistic transmission network is used to exemplify the method.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"48 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120889792","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 : 2014-10-01DOI: 10.1109/ISGTEUROPE.2014.7028745
W. Nakawiro
Unit commitment involves determination of a large number of variables (both discrete and continuous). The well-known curse of dimensionality is very pronounced when dealing with large-scale power systems. This paper presents an approach combined between genetic algorithm (GA) and interior point method (IPM). GA is used to determine the on/off status of generators (discrete variables) whereby IPM finds the optimal power dispatch of the committed generators. Simulations were carried out for the case with 10, 30, 60 and 100 units. The results show that the proposed method helps improve quality of the final result and also reduce computing time.
{"title":"A combined GA and IPM approach for unit commitment problem","authors":"W. Nakawiro","doi":"10.1109/ISGTEUROPE.2014.7028745","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028745","url":null,"abstract":"Unit commitment involves determination of a large number of variables (both discrete and continuous). The well-known curse of dimensionality is very pronounced when dealing with large-scale power systems. This paper presents an approach combined between genetic algorithm (GA) and interior point method (IPM). GA is used to determine the on/off status of generators (discrete variables) whereby IPM finds the optimal power dispatch of the committed generators. Simulations were carried out for the case with 10, 30, 60 and 100 units. The results show that the proposed method helps improve quality of the final result and also reduce computing time.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121226681","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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