Pub Date : 2014-12-01DOI: 10.1109/SGC.2014.7090867
M. Shamirzaee, H. Ayoubzadeh, D. Farokhzad, F. Aminifar, H. Haeri
Installation of phasor measurement units (PMUs) in a number of Iranian power grid substations has offered a set of precise and coherent information of system quantities, specially at event times. Inertia constant of a power grid is one of the criteria of system stability and is a basis for scheduling of spinning-reserve support generators. Estimation of grid inertia constant necessitates precise information of system frequency at the occurrence of generation rejection or load loss events. This paper presents an improved method based on polynomial approximation for calculation of inertia constant. The power system representative model changes at the events of generation rejection or load loss due to responses of generation units to frequency variations. The proposed method takes into account the non-homogeneous nature of system at the occurrence and during an event, so that the system model variations will not deteriorate the accuracy of estimation. The proposed method is examined to estimate the inertia constant of Iranian power grid using frequency information during generation outages, recorded by PMUs. Experimental results reveal that the new method is more robust compared to existing ones and significantly reduces the sensitivity of derived values to two hazy factors which are the exact event time and the polynomial order of the approximation.
{"title":"An improved method for estimation of inertia constant of power system based on polynomial approximation","authors":"M. Shamirzaee, H. Ayoubzadeh, D. Farokhzad, F. Aminifar, H. Haeri","doi":"10.1109/SGC.2014.7090867","DOIUrl":"https://doi.org/10.1109/SGC.2014.7090867","url":null,"abstract":"Installation of phasor measurement units (PMUs) in a number of Iranian power grid substations has offered a set of precise and coherent information of system quantities, specially at event times. Inertia constant of a power grid is one of the criteria of system stability and is a basis for scheduling of spinning-reserve support generators. Estimation of grid inertia constant necessitates precise information of system frequency at the occurrence of generation rejection or load loss events. This paper presents an improved method based on polynomial approximation for calculation of inertia constant. The power system representative model changes at the events of generation rejection or load loss due to responses of generation units to frequency variations. The proposed method takes into account the non-homogeneous nature of system at the occurrence and during an event, so that the system model variations will not deteriorate the accuracy of estimation. The proposed method is examined to estimate the inertia constant of Iranian power grid using frequency information during generation outages, recorded by PMUs. Experimental results reveal that the new method is more robust compared to existing ones and significantly reduces the sensitivity of derived values to two hazy factors which are the exact event time and the polynomial order of the approximation.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124693610","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 : 2014-12-01DOI: 10.1109/SGC.2014.7150709
S. Ataee, Rahmat Khezri, M. R. Feizi, H. Bevrani
According to the environmental concerns, the utility of renewable energy is rapidly growing up. Recently, wind energy has had a significant proportion in renewable power resources. As wind power penetration increases, power industry tends to replace conventional generation units with the wind power resources. Modern wind energy conversion machines are not able to participate in frequency response since the machines are decoupled from the grid by back-to-back voltage based converters. In spite of providing the ability for wind generation to contribute in frequency regulation, the effect of this contribution is not entirely perceived especially at different wind power penetration. This paper investigates the impact of the inertia, primary frequency response (PFR) and combination of those control procedures that provided based on fast primary control by wind turbines on frequency response of updated IEEE-39 bus power system. The simulation results show the significant improvement in frequency performance with contribution of wind farms in primary frequency regulation.
{"title":"Investigating the impacts of wind power contribution on the short-term frequency performance","authors":"S. Ataee, Rahmat Khezri, M. R. Feizi, H. Bevrani","doi":"10.1109/SGC.2014.7150709","DOIUrl":"https://doi.org/10.1109/SGC.2014.7150709","url":null,"abstract":"According to the environmental concerns, the utility of renewable energy is rapidly growing up. Recently, wind energy has had a significant proportion in renewable power resources. As wind power penetration increases, power industry tends to replace conventional generation units with the wind power resources. Modern wind energy conversion machines are not able to participate in frequency response since the machines are decoupled from the grid by back-to-back voltage based converters. In spite of providing the ability for wind generation to contribute in frequency regulation, the effect of this contribution is not entirely perceived especially at different wind power penetration. This paper investigates the impact of the inertia, primary frequency response (PFR) and combination of those control procedures that provided based on fast primary control by wind turbines on frequency response of updated IEEE-39 bus power system. The simulation results show the significant improvement in frequency performance with contribution of wind farms in primary frequency regulation.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115175760","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 : 2014-12-01DOI: 10.1109/SGC.2014.7151034
Reza Salahshour, Ehsan Mirmoradi, H. Ghasemi
Frequency regulation after contingences is one of the main concerns of power system operators. Primary predefined reserve, which is deployed in order to maintain frequency deviations within allowed bands, can lead to an increase in operation cost of system, due to the need for committing more generation units. Participation of electrical vehicles in electricity market can be utilized as a means of reducing operation costs. A model to integrate EVs participation in energy and reserve market is presented. The model takes frequency regulation constraints into consideration. The results indicate that the system/market operators can utilize EVs to reduce operation cost while frequency constraints are respected.
{"title":"EVs participation in energy and reserve market considering primary and tertiary frequency regulation constraints","authors":"Reza Salahshour, Ehsan Mirmoradi, H. Ghasemi","doi":"10.1109/SGC.2014.7151034","DOIUrl":"https://doi.org/10.1109/SGC.2014.7151034","url":null,"abstract":"Frequency regulation after contingences is one of the main concerns of power system operators. Primary predefined reserve, which is deployed in order to maintain frequency deviations within allowed bands, can lead to an increase in operation cost of system, due to the need for committing more generation units. Participation of electrical vehicles in electricity market can be utilized as a means of reducing operation costs. A model to integrate EVs participation in energy and reserve market is presented. The model takes frequency regulation constraints into consideration. The results indicate that the system/market operators can utilize EVs to reduce operation cost while frequency constraints are respected.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125725187","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 : 2014-12-01DOI: 10.1109/SGC.2014.7150711
Alireza Niknam Kumle, Jalal Heidary, T. Niknam
In this study, optimal sizing and scheduling of cogeneration based hybrid system is done to economically meet electrical and thermal demands simultaneously. Demands can be met by grid or distributed generation (DG) resources. In order to come closer to reality, it is assumed that the distribution network has limited the maximum power usage. So, if the user has a request more than the determined value, the new distributed branch should be constructed for costumers. Depend upon the type of request, the costumer should pay some or all of the feeder foundation cost. Determining the type of agreement, size and planning of the system is investigated in this paper. Also, several scenarios are analyzed. Firstly, it is assumed that only the combined heat and power (CHP) system is selected as a DG resource. In second and third scenarios the hybrid PV/CHP and wind/CHP are investigated, respectively. Finally, hybrid PV/Wind/ CHP is analyzed in the last scenario. The results show that the hybrid PV/CHP/Wind system is more affordable than the others.
{"title":"Heat and power scheduling of PV/Wind/CHP system considering power usage limitation of distribution network in iran","authors":"Alireza Niknam Kumle, Jalal Heidary, T. Niknam","doi":"10.1109/SGC.2014.7150711","DOIUrl":"https://doi.org/10.1109/SGC.2014.7150711","url":null,"abstract":"In this study, optimal sizing and scheduling of cogeneration based hybrid system is done to economically meet electrical and thermal demands simultaneously. Demands can be met by grid or distributed generation (DG) resources. In order to come closer to reality, it is assumed that the distribution network has limited the maximum power usage. So, if the user has a request more than the determined value, the new distributed branch should be constructed for costumers. Depend upon the type of request, the costumer should pay some or all of the feeder foundation cost. Determining the type of agreement, size and planning of the system is investigated in this paper. Also, several scenarios are analyzed. Firstly, it is assumed that only the combined heat and power (CHP) system is selected as a DG resource. In second and third scenarios the hybrid PV/CHP and wind/CHP are investigated, respectively. Finally, hybrid PV/Wind/ CHP is analyzed in the last scenario. The results show that the hybrid PV/CHP/Wind system is more affordable than the others.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125725862","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 : 2014-12-01DOI: 10.1109/SGC.2014.7090869
Alireza Mohammadzadeh Fakhr Davoud, Mohsen Ghale Navi, S. Kanani
This paper presents design and performance enhancement of the monitoring system of a power plant, specifically based on Modbus/TCP configuration. Also, Establishing the Modbus/TCP connection and method of obtaining the redundancy and cycle time calculation is presented. The approach is based on the Siemens PLC S7-417H and the related hardware (Step7) and software (process Control System: PCS7) to establish the Modbus/TCP connection to communicate with Hitachi H25 system. The results of this research have been tested in the ESLAMABAD gas turbine power plant. This approach is very robust and could be used in the same applications.
{"title":"Online monitoring of gas turbine power plant using modbus/TCP","authors":"Alireza Mohammadzadeh Fakhr Davoud, Mohsen Ghale Navi, S. Kanani","doi":"10.1109/SGC.2014.7090869","DOIUrl":"https://doi.org/10.1109/SGC.2014.7090869","url":null,"abstract":"This paper presents design and performance enhancement of the monitoring system of a power plant, specifically based on Modbus/TCP configuration. Also, Establishing the Modbus/TCP connection and method of obtaining the redundancy and cycle time calculation is presented. The approach is based on the Siemens PLC S7-417H and the related hardware (Step7) and software (process Control System: PCS7) to establish the Modbus/TCP connection to communicate with Hitachi H25 system. The results of this research have been tested in the ESLAMABAD gas turbine power plant. This approach is very robust and could be used in the same applications.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125731908","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 : 2014-12-01DOI: 10.1109/SGC.2014.7150712
M. Shafie‐khah, A. A. S. de la Nieta, J. Catalão, E. Heydarian‐Forushani
Wind power is expected to deliver a significant part of power generation in future smart grid. However, many economic challenges have arisen from the intermittent nature of wind power. In this paper, a multi-stage stochastic model is proposed for self-scheduling problem of Wind Power Producers (WPPs) in competitive electricity markets. The proposed model includes three trading levels namely; forward, day-ahead, and balancing sessions. The problem uncertainties, such as wind power, market prices and quantity of activated reserve by ISO are considered by the Monte Carlo method. Moreover, Conditional Value-at-Risk (CVaR) is employed in the model as an appropriate risk measuring technique. The proposed model yields the optimal behavior of WPPs to participate in day-ahead energy and ancillary services markets (i.e. spinning reserve and regulation). Simulation results indicate that simultaneous participation of the WPPs in the mentioned markets not only augments their profit but also can significantly decrease the associated risks.
{"title":"Optimal self-scheduling of a wind power producer in energy and ancillary services markets using a multi-stage stochastic programming","authors":"M. Shafie‐khah, A. A. S. de la Nieta, J. Catalão, E. Heydarian‐Forushani","doi":"10.1109/SGC.2014.7150712","DOIUrl":"https://doi.org/10.1109/SGC.2014.7150712","url":null,"abstract":"Wind power is expected to deliver a significant part of power generation in future smart grid. However, many economic challenges have arisen from the intermittent nature of wind power. In this paper, a multi-stage stochastic model is proposed for self-scheduling problem of Wind Power Producers (WPPs) in competitive electricity markets. The proposed model includes three trading levels namely; forward, day-ahead, and balancing sessions. The problem uncertainties, such as wind power, market prices and quantity of activated reserve by ISO are considered by the Monte Carlo method. Moreover, Conditional Value-at-Risk (CVaR) is employed in the model as an appropriate risk measuring technique. The proposed model yields the optimal behavior of WPPs to participate in day-ahead energy and ancillary services markets (i.e. spinning reserve and regulation). Simulation results indicate that simultaneous participation of the WPPs in the mentioned markets not only augments their profit but also can significantly decrease the associated risks.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131162432","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 : 2014-12-01DOI: 10.1109/SGC.2014.7150701
Vavid Maleki Meyabadi, M. Farajzadeh
This paper presents a control framework for smart reconfiguration in smart distribution grids. The control framework is based on peer-to-peer communications and on Incident Command System. This control framework requires an optimization algorithm in order to make a decision. In this paper, Big Bang- Big Crunch (BB-BC) algorithm is modified (Modify BB-BC) to deal with the reconfiguration problems. MBB- BC algorithm in the decision center of the control framework helps achieve the near minimum power loss of smart distribution grids. The control framework can lead to smart and better control. Also, two well-known distribution systems are selected to demonstrate the efficiency of the optimization algorithm used in the control framework. MBB-BC is compared with Big Bang-Big Crunch and other optimization methods including Genetic Algorithm and Ant Colony Optimization. In addition, the simulation results show that this method is more effective compared to other optimization algorithms, especially BB-BC.
提出了一种智能配电网智能重构控制框架。控制框架基于点对点通信和事件指挥系统。这个控制框架需要一个优化算法来做出决策。本文对Big Bang- Big Crunch (BB-BC)算法进行了改进(Modify BB-BC)，以解决重构问题。在控制框架的决策中心采用MBB- BC算法，使智能配电网的功率损耗接近最小。控制框架可以实现智能和更好的控制。并以两个知名的配电系统为例，验证了优化算法在控制框架中的有效性。将MBB-BC算法与Big Bang-Big Crunch算法以及遗传算法、蚁群算法等优化方法进行了比较。仿真结果表明，与其他优化算法相比，特别是与BB-BC算法相比，该方法更加有效。
{"title":"Smart reconfiguration in smart distribution grids by using of the new optimization method: big bang-big crunch","authors":"Vavid Maleki Meyabadi, M. Farajzadeh","doi":"10.1109/SGC.2014.7150701","DOIUrl":"https://doi.org/10.1109/SGC.2014.7150701","url":null,"abstract":"This paper presents a control framework for smart reconfiguration in smart distribution grids. The control framework is based on peer-to-peer communications and on Incident Command System. This control framework requires an optimization algorithm in order to make a decision. In this paper, Big Bang- Big Crunch (BB-BC) algorithm is modified (Modify BB-BC) to deal with the reconfiguration problems. MBB- BC algorithm in the decision center of the control framework helps achieve the near minimum power loss of smart distribution grids. The control framework can lead to smart and better control. Also, two well-known distribution systems are selected to demonstrate the efficiency of the optimization algorithm used in the control framework. MBB-BC is compared with Big Bang-Big Crunch and other optimization methods including Genetic Algorithm and Ant Colony Optimization. In addition, the simulation results show that this method is more effective compared to other optimization algorithms, especially BB-BC.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133395738","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 : 2014-12-01DOI: 10.1109/SGC.2014.7150706
O. Salari, A. Nazemi, Sadegh Shamlou
This paper proposes a new configuration of battery charger which has the ability to charge a HEV battery with Fast DC Charging method and single phase AC source. The proposed converter also has the ability to regenerate braking energy as the electrical energy to recharge the battery during brakes. This new topology uses a single phase "PWM Rectifier" as the AC-DC rectifier to provide a path to charge the battery while using AC current. Therefore this converter could be easily used in domestic applications where single phase electrical energy is available.
{"title":"A new multiple input bidirectional HEV battery charger","authors":"O. Salari, A. Nazemi, Sadegh Shamlou","doi":"10.1109/SGC.2014.7150706","DOIUrl":"https://doi.org/10.1109/SGC.2014.7150706","url":null,"abstract":"This paper proposes a new configuration of battery charger which has the ability to charge a HEV battery with Fast DC Charging method and single phase AC source. The proposed converter also has the ability to regenerate braking energy as the electrical energy to recharge the battery during brakes. This new topology uses a single phase \"PWM Rectifier\" as the AC-DC rectifier to provide a path to charge the battery while using AC current. Therefore this converter could be easily used in domestic applications where single phase electrical energy is available.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125186502","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 : 2014-12-01DOI: 10.1109/SGC.2014.7090877
M. Ashabani
As voltage source converters (VSCs) are finding expanded use, their integration into future smart grids is becoming challenging. The main problems can be categorized as poor frequency regulation because of low overall physical inertia, interactions between synchronous generators (SGs) and VSCs, and switching between grid-connected and islanded modes. To overcome these problems the concept of synchronous converters is introduced to facilitate a general framework for interfacing VSCs to smart grids with emulated inertia, generality for all operational modes, constant frequency and current and voltage regulation capacities augmented in one compact structure. The proposed controllers are also applicable to conventional SGs realizing a unified control strategy for all types of generation units. To integrate VSCs to power system with dc-link voltage regulation ability such as rectifiers, dc, and hybrid dc/ac grids concept of synchronous-VSC and hybrid dc/ac droop or equivalently dc-link vs. frequency droop is developed which provide a tool for bidirectional power flow from dc-link capacitor similar to a virtual rotor. Both simulation and experimental results are presented to validate the practicability of the controllers.
{"title":"Synchronous converter and synchronous-VSC- state of art of universal control strategies for smart grid integration","authors":"M. Ashabani","doi":"10.1109/SGC.2014.7090877","DOIUrl":"https://doi.org/10.1109/SGC.2014.7090877","url":null,"abstract":"As voltage source converters (VSCs) are finding expanded use, their integration into future smart grids is becoming challenging. The main problems can be categorized as poor frequency regulation because of low overall physical inertia, interactions between synchronous generators (SGs) and VSCs, and switching between grid-connected and islanded modes. To overcome these problems the concept of synchronous converters is introduced to facilitate a general framework for interfacing VSCs to smart grids with emulated inertia, generality for all operational modes, constant frequency and current and voltage regulation capacities augmented in one compact structure. The proposed controllers are also applicable to conventional SGs realizing a unified control strategy for all types of generation units. To integrate VSCs to power system with dc-link voltage regulation ability such as rectifiers, dc, and hybrid dc/ac grids concept of synchronous-VSC and hybrid dc/ac droop or equivalently dc-link vs. frequency droop is developed which provide a tool for bidirectional power flow from dc-link capacitor similar to a virtual rotor. Both simulation and experimental results are presented to validate the practicability of the controllers.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124910176","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 : 2014-12-01DOI: 10.1109/SGC.2014.7090859
A. A. K. Arani, H. Zaferani, M. Sanjari, G. Gharehpetian
Multilevel inverters have many advantages such as low cost, good efficiency and etc, and some application such as PV panels and fuel cells. Cascaded H-bridge MLI is one type of these MLIs. Up to now, different methods for acquiring switching algorithm have been proposed. In this paper, minimization of THD by adjusting switching times of switches is used for a 27-level inverter. For this purpose first THD is defined as a function of these switching angles and then for minimization of this function, two optimization algorithm is used: 1-Genetic Algorithms 2- Simulated Annealing. After achieving these angles, a 27-level inverter one time with ideal DC voltage sources and one time with detailed PV cells as DC voltage sources is simulated and a FFT analyses is done.
{"title":"Using genetic algorithm and simulated annealing for 27-level PV inverter THD minimization","authors":"A. A. K. Arani, H. Zaferani, M. Sanjari, G. Gharehpetian","doi":"10.1109/SGC.2014.7090859","DOIUrl":"https://doi.org/10.1109/SGC.2014.7090859","url":null,"abstract":"Multilevel inverters have many advantages such as low cost, good efficiency and etc, and some application such as PV panels and fuel cells. Cascaded H-bridge MLI is one type of these MLIs. Up to now, different methods for acquiring switching algorithm have been proposed. In this paper, minimization of THD by adjusting switching times of switches is used for a 27-level inverter. For this purpose first THD is defined as a function of these switching angles and then for minimization of this function, two optimization algorithm is used: 1-Genetic Algorithms 2- Simulated Annealing. After achieving these angles, a 27-level inverter one time with ideal DC voltage sources and one time with detailed PV cells as DC voltage sources is simulated and a FFT analyses is done.","PeriodicalId":341696,"journal":{"name":"2014 Smart Grid Conference (SGC)","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116412224","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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