Pub Date : 2012-12-31DOI: 10.1109/UPEC.2012.6398607
J. Bekker, H. Vermeulen
The installed capacity of wind generation systems has increased dramatically in recent years, thereby increasing the need for efficient model implementations for operational applications such as simulating system behaviour and grid interactions, identifying and quantifying ageing effects and performing condition monitoring. While the model topologies for conventional systems are well established, the methodologies for determining parameter values from online measurements require further research, especially for applications such as condition monitoring. This paper presents the results of an exploratory investigation to estimate the model parameters of a double-fed induction generator used in a classical wind generation system that includes a wind turbine blade, gearbox and simplified grid model. The investigation is conducted using dedicated Matlab implementations of C-code S-function models of the various system components, compiled as a Simulink library. This approach ensures highly efficient model implementations with fast simulation times as is typically required by parameter estimation processes. Results are presented for case studies performed on both ABC and DQ generator model implementations, with the generator either operated in isolation or as part of a wind generation system. The investigation considers two perturbation signals, namely step perturbations applied to the rotor angular velocity and stator voltages respectively. The results show that the electrical parameters of the generator can be estimated with good accuracy using these model implementations, operating topologies and perturbation signals.
{"title":"Parameter estimation of a doubly-fed induction generator in a wind generation topology","authors":"J. Bekker, H. Vermeulen","doi":"10.1109/UPEC.2012.6398607","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398607","url":null,"abstract":"The installed capacity of wind generation systems has increased dramatically in recent years, thereby increasing the need for efficient model implementations for operational applications such as simulating system behaviour and grid interactions, identifying and quantifying ageing effects and performing condition monitoring. While the model topologies for conventional systems are well established, the methodologies for determining parameter values from online measurements require further research, especially for applications such as condition monitoring. This paper presents the results of an exploratory investigation to estimate the model parameters of a double-fed induction generator used in a classical wind generation system that includes a wind turbine blade, gearbox and simplified grid model. The investigation is conducted using dedicated Matlab implementations of C-code S-function models of the various system components, compiled as a Simulink library. This approach ensures highly efficient model implementations with fast simulation times as is typically required by parameter estimation processes. Results are presented for case studies performed on both ABC and DQ generator model implementations, with the generator either operated in isolation or as part of a wind generation system. The investigation considers two perturbation signals, namely step perturbations applied to the rotor angular velocity and stator voltages respectively. The results show that the electrical parameters of the generator can be estimated with good accuracy using these model implementations, operating topologies and perturbation signals.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130507325","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398554
F. Gonzalez-Longatt, J. Roldan, C. Charalambous
This paper presents an algorithm for the sequential solution of the ac/dc power flow, which is proposed for the analysis of multi-terminal HVDC systems (MTDC). This sequential power flow algorithm can be implemented easily in an existing ac power flow package and is very flexible when it compared with unified methods. Gauss-Siedel algorithm is used to solve dc power balance equations, it offers two keys advantages: very fast and simple computational implementation, and errors do not accumulate during the calculation. The algorithm is tested using the WSCC 3-machine, 9-bus system with a 3-terminal MTDC network and results compared with those obtained from DIgSILENT® PowerFactoryTM demonstrating the validity of the proposed algorithm. As aggregate value, a representative test case of the projected scheme for the phase I of the Supergrid project on the North Sea is presented, the proposed approach presented in this paper is used to calculate DC power flows for some scenarios.
{"title":"Solution of ac/dc power flow on a multiterminal HVDC system: Illustrative case supergrid phase I","authors":"F. Gonzalez-Longatt, J. Roldan, C. Charalambous","doi":"10.1109/UPEC.2012.6398554","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398554","url":null,"abstract":"This paper presents an algorithm for the sequential solution of the ac/dc power flow, which is proposed for the analysis of multi-terminal HVDC systems (MTDC). This sequential power flow algorithm can be implemented easily in an existing ac power flow package and is very flexible when it compared with unified methods. Gauss-Siedel algorithm is used to solve dc power balance equations, it offers two keys advantages: very fast and simple computational implementation, and errors do not accumulate during the calculation. The algorithm is tested using the WSCC 3-machine, 9-bus system with a 3-terminal MTDC network and results compared with those obtained from DIgSILENT® PowerFactoryTM demonstrating the validity of the proposed algorithm. As aggregate value, a representative test case of the projected scheme for the phase I of the Supergrid project on the North Sea is presented, the proposed approach presented in this paper is used to calculate DC power flows for some scenarios.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129556047","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398429
L. Wu, D. Infield
As wind power penetration into power systems increases, it poses a growing challenge to power system operation and stability. This is partly because wind power is highly time variable and cannot inherently contribute to power system frequency regulation. The provision of frequency support from wind turbines under changing wind conditions is examined in this paper. A simplified variable speed wind turbine model is developed. A modified turbine controller to deliver inertial and droop response is proposed. The interaction between inertial and droop response from wind turbines is examined under varying wind.
{"title":"Investigation on the interaction between inertial response and droop control from variable speed wind turbines under changing wind conditions","authors":"L. Wu, D. Infield","doi":"10.1109/UPEC.2012.6398429","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398429","url":null,"abstract":"As wind power penetration into power systems increases, it poses a growing challenge to power system operation and stability. This is partly because wind power is highly time variable and cannot inherently contribute to power system frequency regulation. The provision of frequency support from wind turbines under changing wind conditions is examined in this paper. A simplified variable speed wind turbine model is developed. A modified turbine controller to deliver inertial and droop response is proposed. The interaction between inertial and droop response from wind turbines is examined under varying wind.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127361091","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398657
A. Bonfiglio, M. Brignone, F. Delfino, M. Invernizzi, F. Pampararo, R. Procopio
The strong and intense increase of the number of Photovoltaic production plants has slowly changed the asset and the operation conditions of the electric system. The aim of the present work is to introduce an innovative optimized control strategy to exploit the reactive power resource generated by photovoltaic plants in order to improve the quality and efficiency of the low/medium voltage distribution network. Here, a methodology to define the optimal reactive power reference for every photovoltaic unit of the network is presented in order to pursue a well-defined goal, such as the minimization of the Joule losses or the voltage support. Such reference signals are then provided to the photovoltaic control systems that will guarantee the decoupling between the reactive power channel and the active power one, thanks to the use of the FeedBack Linearization (FBL) control technique. The problem is here formulated in a general way, therefore it can be extended to any possible grid configuration and test case scenario.
{"title":"A technique for the optimal control and operation of grid-connected photovoltaic production units","authors":"A. Bonfiglio, M. Brignone, F. Delfino, M. Invernizzi, F. Pampararo, R. Procopio","doi":"10.1109/UPEC.2012.6398657","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398657","url":null,"abstract":"The strong and intense increase of the number of Photovoltaic production plants has slowly changed the asset and the operation conditions of the electric system. The aim of the present work is to introduce an innovative optimized control strategy to exploit the reactive power resource generated by photovoltaic plants in order to improve the quality and efficiency of the low/medium voltage distribution network. Here, a methodology to define the optimal reactive power reference for every photovoltaic unit of the network is presented in order to pursue a well-defined goal, such as the minimization of the Joule losses or the voltage support. Such reference signals are then provided to the photovoltaic control systems that will guarantee the decoupling between the reactive power channel and the active power one, thanks to the use of the FeedBack Linearization (FBL) control technique. The problem is here formulated in a general way, therefore it can be extended to any possible grid configuration and test case scenario.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127407849","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398431
R. Pereira, C. Ferreira, F. Barbosa
Voltage stability is predominantly a load stability phenomenon and solutions to voltage stability can be found by control of the load as seen from the bulk power network. A delay of the load restoration gives time for other corrective actions. The load restoration may be delayed and/or limited by certain countermeasures, such as blocking of Under Load Tap Changers (ULTC). In this paper it was studied the impact of the ULTC on the dynamic voltage collapse of an electric power system with large scale wind generation. It is used the Cigré Electric Power Network with 32 bus and three wind farms equipped with wind turbines, including pitch control coupled with a Fixed Speed Induction Generator (FSIG) and a shunt capacitor bank. The automatic voltage regulators (AVR) of the generating units and the turbine speed governors were modelled. Different load models were used and the ULTC were taken into account. Several significant disturbances were simulated in the test power network, such as the increase of the wind speed, the tripping of an overhead transmission line and three-phase short-circuits. The simulation results were obtained using the EUROSTAG software package. Finally, some conclusions that provide a better understanding of the ULTC effect on the dynamic voltage stability in a system with a large amount of wind power generation are pointed out.
{"title":"Impact of the ULTC on the dynamic voltage collapse of an electric power system with large scale of wind generation","authors":"R. Pereira, C. Ferreira, F. Barbosa","doi":"10.1109/UPEC.2012.6398431","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398431","url":null,"abstract":"Voltage stability is predominantly a load stability phenomenon and solutions to voltage stability can be found by control of the load as seen from the bulk power network. A delay of the load restoration gives time for other corrective actions. The load restoration may be delayed and/or limited by certain countermeasures, such as blocking of Under Load Tap Changers (ULTC). In this paper it was studied the impact of the ULTC on the dynamic voltage collapse of an electric power system with large scale wind generation. It is used the Cigré Electric Power Network with 32 bus and three wind farms equipped with wind turbines, including pitch control coupled with a Fixed Speed Induction Generator (FSIG) and a shunt capacitor bank. The automatic voltage regulators (AVR) of the generating units and the turbine speed governors were modelled. Different load models were used and the ULTC were taken into account. Several significant disturbances were simulated in the test power network, such as the increase of the wind speed, the tripping of an overhead transmission line and three-phase short-circuits. The simulation results were obtained using the EUROSTAG software package. Finally, some conclusions that provide a better understanding of the ULTC effect on the dynamic voltage stability in a system with a large amount of wind power generation are pointed out.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127737152","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398577
Sheng Wang, Jun Liang, J. Ekanayake
This paper presents an economical and technological comparison between a conventional point to point (PTP) VSC-HVDC system and a DC mesh grid. A case study based on Dogger Bank Creyke Beck is used for this investigation. In the economic comparison, three main components are considered- VSC converter, DC cable and DC circuit breaker. The cost of losses is analyzed and the investment cost is estimated. Simulation using PSCAD/EMTDC is undertaken to support the technology assessment. The system redundancy during normal conditions is presented while the performance of each topology during fault condition is also illustrated. It is concluded that a DC mesh grid is more flexible in technology aspect and saves the costs.
{"title":"Optimised topology design and comparison for offshore transmission","authors":"Sheng Wang, Jun Liang, J. Ekanayake","doi":"10.1109/UPEC.2012.6398577","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398577","url":null,"abstract":"This paper presents an economical and technological comparison between a conventional point to point (PTP) VSC-HVDC system and a DC mesh grid. A case study based on Dogger Bank Creyke Beck is used for this investigation. In the economic comparison, three main components are considered- VSC converter, DC cable and DC circuit breaker. The cost of losses is analyzed and the investment cost is estimated. Simulation using PSCAD/EMTDC is undertaken to support the technology assessment. The system redundancy during normal conditions is presented while the performance of each topology during fault condition is also illustrated. It is concluded that a DC mesh grid is more flexible in technology aspect and saves the costs.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122486726","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398684
K. Oureilidis, C. Demoulias
The penetration of renewable energy sources in small-scale power production gives the opportunity parts of the grid to work as microgrids. The microgrid should be able to work both in grid-connected and island mode, while its voltage and frequency deviations follow the EN 50160 standard. The use of energy storage system is generally recommended in order to absorb the mismatches between the demand and the generation side and to preserve the quality of the microgrid voltage. While the up to day research is mainly concentrated on energy management based on communication, this paper proposes a wireless method for keeping the voltage and the frequency within the limits, using a battery as an energy storage system (ESS). An analytical expression for calculating the battery capacity is also proposed. The active and reactive power sharing among the parallel resources is achieved using the droop control method and an algorithm proportional to droop characteristic and the rated apparent power of each resource. According to the values of frequency and voltage and the State of Charge (SoC), the battery is connected in the microgrid, working in charging or discharging mode. A microgrid consisting of two inverter-interfaced power resources, a battery and a constant power load is investigated. Simulation results demonstrate that the proposed wireless control method provides the load with a high quality voltage in both grid-connected and islanded mode under several load scenarios.
{"title":"Microgrid wireless energy management with energy storage system","authors":"K. Oureilidis, C. Demoulias","doi":"10.1109/UPEC.2012.6398684","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398684","url":null,"abstract":"The penetration of renewable energy sources in small-scale power production gives the opportunity parts of the grid to work as microgrids. The microgrid should be able to work both in grid-connected and island mode, while its voltage and frequency deviations follow the EN 50160 standard. The use of energy storage system is generally recommended in order to absorb the mismatches between the demand and the generation side and to preserve the quality of the microgrid voltage. While the up to day research is mainly concentrated on energy management based on communication, this paper proposes a wireless method for keeping the voltage and the frequency within the limits, using a battery as an energy storage system (ESS). An analytical expression for calculating the battery capacity is also proposed. The active and reactive power sharing among the parallel resources is achieved using the droop control method and an algorithm proportional to droop characteristic and the rated apparent power of each resource. According to the values of frequency and voltage and the State of Charge (SoC), the battery is connected in the microgrid, working in charging or discharging mode. A microgrid consisting of two inverter-interfaced power resources, a battery and a constant power load is investigated. Simulation results demonstrate that the proposed wireless control method provides the load with a high quality voltage in both grid-connected and islanded mode under several load scenarios.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122648002","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398688
Z. Benhachani, B. Azoui, R. Abdessemed, M. Chabane
In this paper, we study the sizing and economic optimization of a stand-alone photovoltaic-wind hybrid system with storage batteries, installed in a semi arid region of Algeria supplying a farm. Two methods are developed. The first method is based on the average annual monthly values in which the size of photovoltaic (PV) and wind generators is determined from the average monthly contribution of each component. In the second method, the determination of the size of these two components of the system is based on the worst month. The data comes from the local meteorological station. The consumption profile which has been adopted corresponds to the profile typically found in isolated sites. The optimization was performed taking into account the economic parameter to find the technical and economic optimum configuration. The results show that the studied site is well adapted for solar and wind applications. The sunshine duration is over 2000 hours annually. The energy acquired daily on a horizontal surface can exceed 7kWh/m2 in the summer period and it is annually in the order of 1780 kWh/m2 for a horizontal plane and can exceed 2000 kWh/m2 for an optimal tilt. The average annual wind speed at a 10m height is 3.61m/s and the monthly average speed is over 4m/s in the period of March, April and May. Our study shows that the main benefit of introducing a wind system with a solar one is in the total cost reduction especially in the size of the PV array and battery.
{"title":"Optimal sizing of a solar-wind hybrid system supplying a farm in a semi-arid region of Algeria","authors":"Z. Benhachani, B. Azoui, R. Abdessemed, M. Chabane","doi":"10.1109/UPEC.2012.6398688","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398688","url":null,"abstract":"In this paper, we study the sizing and economic optimization of a stand-alone photovoltaic-wind hybrid system with storage batteries, installed in a semi arid region of Algeria supplying a farm. Two methods are developed. The first method is based on the average annual monthly values in which the size of photovoltaic (PV) and wind generators is determined from the average monthly contribution of each component. In the second method, the determination of the size of these two components of the system is based on the worst month. The data comes from the local meteorological station. The consumption profile which has been adopted corresponds to the profile typically found in isolated sites. The optimization was performed taking into account the economic parameter to find the technical and economic optimum configuration. The results show that the studied site is well adapted for solar and wind applications. The sunshine duration is over 2000 hours annually. The energy acquired daily on a horizontal surface can exceed 7kWh/m2 in the summer period and it is annually in the order of 1780 kWh/m2 for a horizontal plane and can exceed 2000 kWh/m2 for an optimal tilt. The average annual wind speed at a 10m height is 3.61m/s and the monthly average speed is over 4m/s in the period of March, April and May. Our study shows that the main benefit of introducing a wind system with a solar one is in the total cost reduction especially in the size of the PV array and battery.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"29 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134010267","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398428
R. J. de Groot, J. Morren, J. Slootweg
Implementation of distribution automation into medium and low voltage grids is gaining more and more support amongst distribution grid operators. In order to assess the feasibility and usefulness of dynamic network reconfiguration for the purpose of reducing losses and increasing available network capacity, it is necessary to know to what extent simultaneity amongst MV/LV transformers within distribution networks occurs. Measurements have been done in parts of the distribution network of Enexis, one of the largest distribution network operators in the Netherlands. For a full year, in 30 MV/LV substations the transformer and all outgoing low voltage feeders have been measured. In this paper the measurement data is being analyzed in order to determine the degree of simultaneity in low voltage distribution grids, both seen from the low- and the medium-voltage level. The results of this analysis will be used to assess the feasibility of power flow optimization by using distribution automation. Furthermore, an example of a field application will be simulated and discussed.
{"title":"Investigation of simultaneity in distribution networks for the assessment of DA feasibility","authors":"R. J. de Groot, J. Morren, J. Slootweg","doi":"10.1109/UPEC.2012.6398428","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398428","url":null,"abstract":"Implementation of distribution automation into medium and low voltage grids is gaining more and more support amongst distribution grid operators. In order to assess the feasibility and usefulness of dynamic network reconfiguration for the purpose of reducing losses and increasing available network capacity, it is necessary to know to what extent simultaneity amongst MV/LV transformers within distribution networks occurs. Measurements have been done in parts of the distribution network of Enexis, one of the largest distribution network operators in the Netherlands. For a full year, in 30 MV/LV substations the transformer and all outgoing low voltage feeders have been measured. In this paper the measurement data is being analyzed in order to determine the degree of simultaneity in low voltage distribution grids, both seen from the low- and the medium-voltage level. The results of this analysis will be used to assess the feasibility of power flow optimization by using distribution automation. Furthermore, an example of a field application will be simulated and discussed.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122962120","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 : 2012-12-31DOI: 10.1109/UPEC.2012.6398552
Yongzheng Mu, Zongxiang Lu, Ying Qiao, K. Lo
To increase the stability and efficiency of the Grid with wind power integration, one of the solutions is to control the active power output of wind farms. This paper focuses on wind farms with DFIG wind turbines, and analyzes the stability of DFIGs working in different control strategies. An optimized control strategy is proposed that guides the active power output of a DFIG wind farm to follow the reference power curve. By controlling the rotating speed of the DFIGs in a wind farm, the control strategy minimizes the amount of energy loss during its operation. Simulation results show that the control strategy can effectively follow the reference power curve and keep the DFIGs stable.
{"title":"Optimized active power control of DFIG wind farm","authors":"Yongzheng Mu, Zongxiang Lu, Ying Qiao, K. Lo","doi":"10.1109/UPEC.2012.6398552","DOIUrl":"https://doi.org/10.1109/UPEC.2012.6398552","url":null,"abstract":"To increase the stability and efficiency of the Grid with wind power integration, one of the solutions is to control the active power output of wind farms. This paper focuses on wind farms with DFIG wind turbines, and analyzes the stability of DFIGs working in different control strategies. An optimized control strategy is proposed that guides the active power output of a DFIG wind farm to follow the reference power curve. By controlling the rotating speed of the DFIGs in a wind farm, the control strategy minimizes the amount of energy loss during its operation. Simulation results show that the control strategy can effectively follow the reference power curve and keep the DFIGs stable.","PeriodicalId":326950,"journal":{"name":"2012 47th International Universities Power Engineering Conference (UPEC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128406082","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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