Pub Date : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917676
Aigerim Aman, A. Bektimirov, Nassipkul Dyussembekova, Azamat Ilyasov, A. Saukhimov, A. Gunin
The paper presents the results of Wind Power Plant (WPP) influence during its integration to the electrical grid of110 kV and higher, as well as the help of Power System Stabilizer (PSS) to the power system. Providing stability is the most important aspect in the electric power industry, especially when renewable energy sources (RES), in particular WPPs are integrated. When integrating a large amount of RES into the power system, there are challenges for the System Operator associated with generation instability and undamped low-frequency oscillations (LFO). The aim of this work is to study the impact of WPPs integration into traditional power system considering the standards and requirements and the use of PSS in the power system to prevent LFO during WPP integration. The object of the study is an installed WPP in the Almaty region with a capacity of 60 MW. WPP with DFIG type connection to the grid. Rotor-angle stability, small signal stability, voltage stability of the electrical system during the integration of the WPP was carried out. It should be noted that when integrating WPPs into electrical networks without revising the existing PSS at traditional power plants, the oscillatory stability of the power system may decrease.
{"title":"Small signal stability research on integrating Wind Power Plant – An Almaty Region Example","authors":"Aigerim Aman, A. Bektimirov, Nassipkul Dyussembekova, Azamat Ilyasov, A. Saukhimov, A. Gunin","doi":"10.1109/UPEC55022.2022.9917676","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917676","url":null,"abstract":"The paper presents the results of Wind Power Plant (WPP) influence during its integration to the electrical grid of110 kV and higher, as well as the help of Power System Stabilizer (PSS) to the power system. Providing stability is the most important aspect in the electric power industry, especially when renewable energy sources (RES), in particular WPPs are integrated. When integrating a large amount of RES into the power system, there are challenges for the System Operator associated with generation instability and undamped low-frequency oscillations (LFO). The aim of this work is to study the impact of WPPs integration into traditional power system considering the standards and requirements and the use of PSS in the power system to prevent LFO during WPP integration. The object of the study is an installed WPP in the Almaty region with a capacity of 60 MW. WPP with DFIG type connection to the grid. Rotor-angle stability, small signal stability, voltage stability of the electrical system during the integration of the WPP was carried out. It should be noted that when integrating WPPs into electrical networks without revising the existing PSS at traditional power plants, the oscillatory stability of the power system may decrease.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133420933","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917615
N. Anton, C. Bulac, Mihai Sănduleac, Eda-Elif Gemil, Bogdan-Petru Dobrin, Vlăduț-Andrei Ion
The increasingly important use of renewable energy resources within the electricity networks has changed the paradigm of electrical power system operation. This shift is enforced by the ever-present power electronic devices, which are used both at generation side, as well as on the consumption side, cluttering the normal operation, and issuing new threats from power quality point of view. However, the new technology involved in the advanced metering systems, such as Phasor Measurement Units (PMUs), is helping both transmission and distribution operators to efficiently manage the electrical system, by correctly identify the upcoming threats for a priori calculations, as well as the causes which may have led to faults, for a posteriori evaluation. This paper deals with the widespread use of PMU-based advanced metering systems.
{"title":"An overview of PMU-based Electrical Power Systems modelling for Power Quality enhancement","authors":"N. Anton, C. Bulac, Mihai Sănduleac, Eda-Elif Gemil, Bogdan-Petru Dobrin, Vlăduț-Andrei Ion","doi":"10.1109/UPEC55022.2022.9917615","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917615","url":null,"abstract":"The increasingly important use of renewable energy resources within the electricity networks has changed the paradigm of electrical power system operation. This shift is enforced by the ever-present power electronic devices, which are used both at generation side, as well as on the consumption side, cluttering the normal operation, and issuing new threats from power quality point of view. However, the new technology involved in the advanced metering systems, such as Phasor Measurement Units (PMUs), is helping both transmission and distribution operators to efficiently manage the electrical system, by correctly identify the upcoming threats for a priori calculations, as well as the causes which may have led to faults, for a posteriori evaluation. This paper deals with the widespread use of PMU-based advanced metering systems.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132234147","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917733
Fatih Erden, Etki Acilan, Oguzhan Ustundag, Ersan Bozkurt, M. Gol
Dynamic models of power plants may change during its operation due to physical processes and human error. Inaccurate dynamic power plant models may affect the operation and planning of power systems. Hence, keeping the model updated is crucial. Traditionally, dynamic models of power plants are calibrated by offline staged tests. Recently, PMU based remote calibration techniques are developed in attempt to calibrating the dynamic models remotely and reducing the frequency of offline calibration. This paper presents the implementation of PMU based dynamic model calibration of Type-4 Wind Turbine Generators by using the Ensemble Kalman Filter. The implementation is done by using PSS®E in PythonTM environment, and validated by using WSCC-9 Bus System.
{"title":"PMU based Dynamic Model Calibration of Type-4 Wind Turbine Generators","authors":"Fatih Erden, Etki Acilan, Oguzhan Ustundag, Ersan Bozkurt, M. Gol","doi":"10.1109/UPEC55022.2022.9917733","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917733","url":null,"abstract":"Dynamic models of power plants may change during its operation due to physical processes and human error. Inaccurate dynamic power plant models may affect the operation and planning of power systems. Hence, keeping the model updated is crucial. Traditionally, dynamic models of power plants are calibrated by offline staged tests. Recently, PMU based remote calibration techniques are developed in attempt to calibrating the dynamic models remotely and reducing the frequency of offline calibration. This paper presents the implementation of PMU based dynamic model calibration of Type-4 Wind Turbine Generators by using the Ensemble Kalman Filter. The implementation is done by using PSS®E in PythonTM environment, and validated by using WSCC-9 Bus System.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133141045","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917673
M. Atsever, M. H. Hocaoğlu
Coordination of overcurrent relays has been handled with optimization techniques. Time and pick up settings are optimized by using three-phase fault magnitudes. Generally, Standard Inverse Characteristic (SIC) has been used for three-phase fault protection settings. However, single line to earth fault is the most common fault types in distribution networks. Definite Time Characteristic (DTC) is, widely, used for coordination of earth fault relays. Topology type, neutral earthing resistance and capacitive currents of underground cables may cause selectivity issues when DTC is used for the coordination. In this work, time characteristic curve (TCC) based earth fault relay selectivity assessment carried out on distribution network. Different earthing resistance and TCC are taken into account during optimization processes. Results show that both DTC and SIC have issues in terms of operating time and selective protection.
{"title":"Time Characteristic Curve Based Earth Fault Relay Selectivity Assessment for Optimal Overcurrent Relay Coordination in Distribution Networks","authors":"M. Atsever, M. H. Hocaoğlu","doi":"10.1109/UPEC55022.2022.9917673","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917673","url":null,"abstract":"Coordination of overcurrent relays has been handled with optimization techniques. Time and pick up settings are optimized by using three-phase fault magnitudes. Generally, Standard Inverse Characteristic (SIC) has been used for three-phase fault protection settings. However, single line to earth fault is the most common fault types in distribution networks. Definite Time Characteristic (DTC) is, widely, used for coordination of earth fault relays. Topology type, neutral earthing resistance and capacitive currents of underground cables may cause selectivity issues when DTC is used for the coordination. In this work, time characteristic curve (TCC) based earth fault relay selectivity assessment carried out on distribution network. Different earthing resistance and TCC are taken into account during optimization processes. Results show that both DTC and SIC have issues in terms of operating time and selective protection.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114341224","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917809
G. Lacey, Thet Paing Tun
Access to the energy grid is a big concern for isolated households and companies, and emergency diesel generators can cause long-term climate and environmental problems. This study investigated the techno-economic feasibility of deploying clean energy sources to support the operation of a hotel zone on Myanmar’s west coast with limited connectivity to the primary utility grid (5 hours per day). When utility power is unavailable, hotel owners must rely on diesel generators to provide electricity for visitors. An independent microgrid comprising photovoltaic generators and battery storage is constructed and analysed. The microgrid system to completely supply 100% of the load is not an economically realistic solution due to higher capital expenditures and a more extended carbon payback period of about 20 years due to higher embodied energy. A hybrid diesel generator and PV array covering the partial load demand of 20% was an effective option with lower energy and CO2 payback periods of 8.1 and 4.6 years, respectively.
{"title":"Techno-economic Analysis of Deployment of Renewable Energy in Hotel Zone at the West Coast of Myanmar with Limited Grid Access","authors":"G. Lacey, Thet Paing Tun","doi":"10.1109/UPEC55022.2022.9917809","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917809","url":null,"abstract":"Access to the energy grid is a big concern for isolated households and companies, and emergency diesel generators can cause long-term climate and environmental problems. This study investigated the techno-economic feasibility of deploying clean energy sources to support the operation of a hotel zone on Myanmar’s west coast with limited connectivity to the primary utility grid (5 hours per day). When utility power is unavailable, hotel owners must rely on diesel generators to provide electricity for visitors. An independent microgrid comprising photovoltaic generators and battery storage is constructed and analysed. The microgrid system to completely supply 100% of the load is not an economically realistic solution due to higher capital expenditures and a more extended carbon payback period of about 20 years due to higher embodied energy. A hybrid diesel generator and PV array covering the partial load demand of 20% was an effective option with lower energy and CO2 payback periods of 8.1 and 4.6 years, respectively.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125652967","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917864
Melisa Ersoy, Gokturk Poyrazoglu
New LED technologies demand slim designs with increased backlight power. When the parallel-connected LED strings are driven by multiple transformers, the magnetic coupling difference and the LED string voltage difference cause backlight current mismatch problem. This imbalance causes the line with low voltage to draw more current hence to create heat spots on the backlight causing reduced lifetime. This problem is observed as backlight fluctuation at the end-user side. In this study, a cost-effective balancing circuit is simulated and implemented for eight parallel-connected LED strings using two transformers in an LLC half-bridge resonant topology while meeting the power demand in a relatively slim design. For the 145W backlight power, the current mismatch was 57.59% when there was an 8% deviation in transformer leakage inductance and a 10% variation between LED string voltages. The temperature difference between the strings was measured as 31. 8°C taken at room temperature with the open back cover. With the balancing circuit, the LED current difference being reduced to 9.99%. When the string voltages are the same, the maximum deviation in the current is measured as 2.59%.
{"title":"Current Balancing Circuit Design for Parallel LED Strings in QDOT High Bright TV with Dual-Transformer LLC Resonant Topology","authors":"Melisa Ersoy, Gokturk Poyrazoglu","doi":"10.1109/UPEC55022.2022.9917864","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917864","url":null,"abstract":"New LED technologies demand slim designs with increased backlight power. When the parallel-connected LED strings are driven by multiple transformers, the magnetic coupling difference and the LED string voltage difference cause backlight current mismatch problem. This imbalance causes the line with low voltage to draw more current hence to create heat spots on the backlight causing reduced lifetime. This problem is observed as backlight fluctuation at the end-user side. In this study, a cost-effective balancing circuit is simulated and implemented for eight parallel-connected LED strings using two transformers in an LLC half-bridge resonant topology while meeting the power demand in a relatively slim design. For the 145W backlight power, the current mismatch was 57.59% when there was an 8% deviation in transformer leakage inductance and a 10% variation between LED string voltages. The temperature difference between the strings was measured as 31. 8°C taken at room temperature with the open back cover. With the balancing circuit, the LED current difference being reduced to 9.99%. When the string voltages are the same, the maximum deviation in the current is measured as 2.59%.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126475862","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917879
H. Chisepo, C. Gaunt, Pitambar Jankee
The general power theory (GPT) was formulated to provide metering and optimal compensation solutions for practical power delivery systems with unbalance, harmonic distortion, and dc components. Despite the availability of a detailed derivation and description of the GPT, there is still some uncertainty about how to apply it a) in measurement and b) to control a compensator. This paper summarizes the implementation of the GPT and demonstrates its compensation in a power system with equipment generating distortion and unbalance. A model of the physical behavior of a variable speed drive (VSD) and an unbalanced load was developed in MATLAB/Simulink in conjunction with the GPT’s approach to measurement and compensation. The application of the GPT and the results of the modeling indicate that it is possible to achieve optimum compensation for power delivery loss, distortion, and unbalance. A comparison of the novel GPT approach with conventional theory showed the GPT’s better loss reduction and general capability.
{"title":"Applying and comparing the general power theory compensation for unbalance and harmonics","authors":"H. Chisepo, C. Gaunt, Pitambar Jankee","doi":"10.1109/UPEC55022.2022.9917879","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917879","url":null,"abstract":"The general power theory (GPT) was formulated to provide metering and optimal compensation solutions for practical power delivery systems with unbalance, harmonic distortion, and dc components. Despite the availability of a detailed derivation and description of the GPT, there is still some uncertainty about how to apply it a) in measurement and b) to control a compensator. This paper summarizes the implementation of the GPT and demonstrates its compensation in a power system with equipment generating distortion and unbalance. A model of the physical behavior of a variable speed drive (VSD) and an unbalanced load was developed in MATLAB/Simulink in conjunction with the GPT’s approach to measurement and compensation. The application of the GPT and the results of the modeling indicate that it is possible to achieve optimum compensation for power delivery loss, distortion, and unbalance. A comparison of the novel GPT approach with conventional theory showed the GPT’s better loss reduction and general capability.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127609927","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917884
Vlăduț-Andrei Ion, Eda-Elif Gemil, Mădălina Arhip-Călin, A. Tudose, N. Anton, G. Seritan
The continuous development of distributed generation and renewable energy resources has a significant impact on microgrids today. This paper summarizes the main concept of a microgrid, the status of the literature, ongoing developments, and the relevant standards. This paper has covered the aspects of a generical microgrid system, its control and development for the improvement of power quality. The outputs of hydrogen-based studies on microgrids are designed to aid in the future development of secure, reliable, and stable real-life networks with greater penetration of renewable energy sources.
{"title":"A Survey of microgrid operation influence on power quality","authors":"Vlăduț-Andrei Ion, Eda-Elif Gemil, Mădălina Arhip-Călin, A. Tudose, N. Anton, G. Seritan","doi":"10.1109/UPEC55022.2022.9917884","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917884","url":null,"abstract":"The continuous development of distributed generation and renewable energy resources has a significant impact on microgrids today. This paper summarizes the main concept of a microgrid, the status of the literature, ongoing developments, and the relevant standards. This paper has covered the aspects of a generical microgrid system, its control and development for the improvement of power quality. The outputs of hydrogen-based studies on microgrids are designed to aid in the future development of secure, reliable, and stable real-life networks with greater penetration of renewable energy sources.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129129907","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917974
Č. Zeljković, Predrag Mršić, Bojan Erceg, Đorđe M. Lekić, Nemanja Kitić, P. Matić
Standalone hybrid systems based on renewable energy sources may represent a convenient and cost effective option for powering isolated consumers located far from the existing grid. In this study the focus is on particular photovoltaic-wind-diesel-battery systems which supply mobile telephony base stations. In the study, both the consumption of telecommunication electronic equipment and the consumption of cooling devices are taken into account. Nine characteristic locations across Europe with different climatic conditions were selected for comparative techno-economic assessment. For each location, a comprehensive simulation and optimization routine was performed, in order to find the optimal system configuration and the minimum amount of total annualized costs. The obtained results are discussed and some conclusions regarding system sizing at different locations are drawn.
{"title":"Cost Effectiveness of Standalone Hybrid Power Supplies at Different Locations across Europe","authors":"Č. Zeljković, Predrag Mršić, Bojan Erceg, Đorđe M. Lekić, Nemanja Kitić, P. Matić","doi":"10.1109/UPEC55022.2022.9917974","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917974","url":null,"abstract":"Standalone hybrid systems based on renewable energy sources may represent a convenient and cost effective option for powering isolated consumers located far from the existing grid. In this study the focus is on particular photovoltaic-wind-diesel-battery systems which supply mobile telephony base stations. In the study, both the consumption of telecommunication electronic equipment and the consumption of cooling devices are taken into account. Nine characteristic locations across Europe with different climatic conditions were selected for comparative techno-economic assessment. For each location, a comprehensive simulation and optimization routine was performed, in order to find the optimal system configuration and the minimum amount of total annualized costs. The obtained results are discussed and some conclusions regarding system sizing at different locations are drawn.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133528005","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 : 2022-08-30DOI: 10.1109/UPEC55022.2022.9917593
Benjamin Vilmann, J. Hjerrild, P. Randewijk, A. Khalil
Grid-forming wind turbines are a promising technology for weak grids with a high penetration of converter-based power sources. The droop control, the synchronverter, and the virtual synchronous machine grid-forming control topologies are benchmarked by voltage and frequency stability performance from a frequency disturbance under different grid conditions (by varying short-circuit ratio, X/R ratio, and the inertia). The wind turbines are modelled in an offshore wind farm application and the frequency disturbance are scaled to 5% of the installed capacity. The study have shown that the virtual synchronous machine performs best regarding frequency and voltage compliance in weak grids under a frequency disturbance. DC-link modelling is essential for dynamic simulations of grid-forming converters, as grid perturbations can drain the link for energy.
{"title":"Frequency and Voltage Compliance Capability of Grid-Forming Wind Turbines in Offshore Wind Farms in Weak Grids with a Power Imbalance","authors":"Benjamin Vilmann, J. Hjerrild, P. Randewijk, A. Khalil","doi":"10.1109/UPEC55022.2022.9917593","DOIUrl":"https://doi.org/10.1109/UPEC55022.2022.9917593","url":null,"abstract":"Grid-forming wind turbines are a promising technology for weak grids with a high penetration of converter-based power sources. The droop control, the synchronverter, and the virtual synchronous machine grid-forming control topologies are benchmarked by voltage and frequency stability performance from a frequency disturbance under different grid conditions (by varying short-circuit ratio, X/R ratio, and the inertia). The wind turbines are modelled in an offshore wind farm application and the frequency disturbance are scaled to 5% of the installed capacity. The study have shown that the virtual synchronous machine performs best regarding frequency and voltage compliance in weak grids under a frequency disturbance. DC-link modelling is essential for dynamic simulations of grid-forming converters, as grid perturbations can drain the link for energy.","PeriodicalId":371561,"journal":{"name":"2022 57th International Universities Power Engineering Conference (UPEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133566662","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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