jan bozelie - Academia.edu (original) (raw)

Papers by jan bozelie

Research paper thumbnail of Fault current contribution from state of the art DG's and its limitation

The paper describes the policy and considerations of a Dutch utility with respect to the assessme... more The paper describes the policy and considerations of a Dutch utility with respect to the assessment of the fault current contribution of DG's, especially for DFIGs. Simulations and measurements confirm the validity of a simplified approach of the behaviour of DFIGs and full converter generators under fault current conditions. A new fault current limiter (FCL) for single phase fault currents is described shortly. It is compared with conventional neutral treatment methods and can be applied for special cases. In addition, measurements of fault current limiting through full converters are shown.

Research paper thumbnail of Three-phase Non-superconductive Fault Current Limiter Based on the Core-saturation Effect -Challenges and Ideas

Vgb Powertech, 2010

Fault current limiters (FCLs) are expected to play an important role in protection of future powe... more Fault current limiters (FCLs) are expected to play an important role in protection of future power systems. Saturated-core FCLs are particularly interesting because of their supreme operational advantages: inherent reaction on a fault, inherent post-fault recovery and unrestricted duration of a limiting period. The testing of a lab-scale FCL prototype proved the principle of operation. The full-scale 10 kV/400 A FCL prototype is built in co-operation with industry partners. The initial low-voltage 400 V testing has been successful. Full-voltage 10 kV testing will be performed later this year.

Research paper thumbnail of Design and testing of full-scale 10 kV prototype of inductive fault current limiter with a common core and trifilar windings

Fault Current Limiters (FCLs) are expected to play an important role in protection of future powe... more Fault Current Limiters (FCLs) are expected to play an important role in protection of future power systems against excessive fault currents. Inductive saturated-core FCLs have supreme performance in comparison to other FCLs types: inherent reaction on a fault, inherent post-fault recovery and unrestricted duration of a fault limiting period. However, they are not commercialized due to too large amount of magnetic material. The new three-phase FCL topology with a common core and trifilar windings is recently introduced. It considerably reduces the amount of FCL magnetic material and the associated FCL cost. To prove the concept and to demonstrate the FCL ability to protect the power system, the full-scale 10 kV/6.8 MVA FCL prototype is designed and built. The testing is divided in two stages: low-voltage 400 V and full-voltage 10 kV testing. This paper presents the obtained results from the low-voltage testing. The experimental results verified that the FCL can successfully limit a f...

Research paper thumbnail of Grid interaction of offshore wind farms. Part 2. Case study simulations

Wind Energy, 2005

Owing to an increasing penetration of wind turbines and large wind farms in electrical power syst... more Owing to an increasing penetration of wind turbines and large wind farms in electrical power systems, the wind turbines start influencing the overall power system behaviour. Dynamic wind farm models for power system studies have been presented in Part 1 of the article. In this contribution, these models are applied in a number of case studies to determine the impact of wind farms on the power grid. Four turbine concepts are evaluated with respect to their grid interaction. Case studies involving normal behaviour, voltage dip behaviour, voltage control capability and behaviour during frequency deviations will be presented.

Research paper thumbnail of New Three-Phase Inductive FCL With Common Core and Trifilar Windings

IEEE Transactions on Power Delivery, 2010

ABSTRACT Fault current limiters (FCLs) are expected to play an important role in the protection o... more ABSTRACT Fault current limiters (FCLs) are expected to play an important role in the protection of future power grids. Inductive FCLs are particularly interesting due to their inherent reaction to a fault, but are not commercialized because of a too large amount of magnetic material and an induced overvoltage across dc windings. This paper introduces a new three-phase FCL with a common core and trifilar windings. With the new FCL topology, the phase windings are placed on a single core, resulting in significant reduction of the amount of required magnetic material. Furthermore, the phase windings are wound simultaneously, so that the flux coupling between the phases is increased considerably. It cancels out the magnetic field and reduces the FCL normal impedance significantly. The dc windings are used only to compensate for possible asymmetry in the system currents. Consequently, the number of dc turns and the induced overvoltage are considerably decreased. Testing of a scaled-down FCL lab prototype made it possible to verify the FE simulation results and demonstrated the principle of operation of the new topology. Experimental and simulation results matched very well.

Research paper thumbnail of Virtual synchronous generator: An element of future grids

2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), 2010

The future power system integrated a large share of distributed generation (DG) may causes a redu... more The future power system integrated a large share of distributed generation (DG) may causes a reduction of the system rotational inertia, resulting in high frequency variations with any disturbances. An additional rotational inertia will be provided to the system if many DG units combined with relative small storage systems operate like virtual synchronous generators (VSG). This paper presents the demonstration

Research paper thumbnail of Laboratory and Field Trial Experiences with a Smart MV/LV Substation

eaton.nl

It is expected that the power flow in low-voltage (LV) and medium-voltage (MV) distribution grids... more It is expected that the power flow in low-voltage (LV) and medium-voltage (MV) distribution grids will start to fluctuate significantly in the near future due to the increasing penetration of dispersed generation within LV grids together with the global rise in energy demand (due to rising population and major electrification, for example). To manage these fluctuations while maintaining, or even improving, power quality and reliability, a smart substation has been developed by a Dutch consortium. A full-scale prototype of this substation has been assembled and its functionality validated by performing both laboratory and field trial testing. This paper highlights the most promising results of the laboratory tests, as well as from the half year field trial and the experience gained from the testing thus far.

Research paper thumbnail of DOWEC electrical system baseline design

Research paper thumbnail of Virtual synchronous generator: Laboratory scale results and field demonstration

2009 IEEE Bucharest PowerTech, 2009

... Vu Van Thong, Achim Woyte, Mihaela Albu, Marcel Van Hest, Jan Bozelie, Javier Diaz, Tom Loix,... more ... Vu Van Thong, Achim Woyte, Mihaela Albu, Marcel Van Hest, Jan Bozelie, Javier Diaz, Tom Loix, Dan Stanculescu, Klaas Visscher T Paper accepted for presentation at 2009 IEEE Bucharest Power Tech Conference, June 28th - July 2nd, Bucharest, Romania ...

Research paper thumbnail of Grid interaction of offshore wind farms. Part 1. Models for dynamic simulation

Wind Energy, 2005

In this contribution, dynamic wind farm models suitable for fast simulation of power systems are ... more In this contribution, dynamic wind farm models suitable for fast simulation of power systems are presented. While deriving the models, special attention has been paid to increasing the computational speed of the simulation program. An important increase in speed is realized by the use of the well-known dq0 transformation (Park transformation) not only for the generator but also for all other electrical components. The use of the Park transformation is common practice in electrical machine models, but not in the modelling of other electrical components. For single turbines, simulations in the dq0 reference frame are 100 times faster than simulations in the abc reference frame. After a discussion of the Park transformation and its most important properties, it is explained how models in the dq0 reference frame can be obtained.The dq0 models of the most important electrical components are presented. The mechanical and aerodynamic models that are needed for dynamic simulation of wind turbines are discussed briefly. The models are applied in Part 2. Ê Ëˆ[ ] q q 268 J. Morren et al.

Research paper thumbnail of Electrical and Control Aspects of Offshore Wind Farms II (Erao II). Volume 2: Offshore wind farm case studies

Wind Energy, 2012

Abstract: In The Netherlands offshore wind power is on the brink of implementation. Specific plan... more Abstract: In The Netherlands offshore wind power is on the brink of implementation. Specific plans exist for two offshore wind farms of about 100 MW, located 12 and 25 km from the coast of the province of North Holland. The effects of the incorporation of 6000 MW ...

Research paper thumbnail of Fast dynamic models of offshore wind farms for power system studies

Research paper thumbnail of Comparison of complete and reduced models of a wind turbine with Doubly-Fed Induction Generator

Wind turbines equipped with a Doubly-Fed Induction Generator are increasingly popular in the powe... more Wind turbines equipped with a Doubly-Fed Induction Generator are increasingly popular in the power range above 1 MW. For power system stability studies of large wind parks it is desirable to apply reduced models of the machine and the converter in order to limit the computation time. Several reduced models have been developed and evaluated. With respect to the generator,

Research paper thumbnail of Virtual synchronous generator: An element of future grids

The future power system integrated a large share of distributed generation (DG) may causes a redu... more The future power system integrated a large share of distributed generation (DG) may causes a reduction of the system rotational inertia, resulting in high frequency variations with any disturbances. An additional rotational inertia will be provided to the system if many DG units combined with relative small storage systems operate like virtual synchronous generators (VSG). This paper presents the demonstration

Research paper thumbnail of Fault current contribution from state of the art DG's and its limitation

The paper describes the policy and considerations of a Dutch utility with respect to the assessme... more The paper describes the policy and considerations of a Dutch utility with respect to the assessment of the fault current contribution of DG's, especially for DFIGs. Simulations and measurements confirm the validity of a simplified approach of the behaviour of DFIGs and full converter generators under fault current conditions. A new fault current limiter (FCL) for single phase fault currents is described shortly. It is compared with conventional neutral treatment methods and can be applied for special cases. In addition, measurements of fault current limiting through full converters are shown.

Research paper thumbnail of Three-phase Non-superconductive Fault Current Limiter Based on the Core-saturation Effect -Challenges and Ideas

Vgb Powertech, 2010

Fault current limiters (FCLs) are expected to play an important role in protection of future powe... more Fault current limiters (FCLs) are expected to play an important role in protection of future power systems. Saturated-core FCLs are particularly interesting because of their supreme operational advantages: inherent reaction on a fault, inherent post-fault recovery and unrestricted duration of a limiting period. The testing of a lab-scale FCL prototype proved the principle of operation. The full-scale 10 kV/400 A FCL prototype is built in co-operation with industry partners. The initial low-voltage 400 V testing has been successful. Full-voltage 10 kV testing will be performed later this year.

Research paper thumbnail of Design and testing of full-scale 10 kV prototype of inductive fault current limiter with a common core and trifilar windings

Fault Current Limiters (FCLs) are expected to play an important role in protection of future powe... more Fault Current Limiters (FCLs) are expected to play an important role in protection of future power systems against excessive fault currents. Inductive saturated-core FCLs have supreme performance in comparison to other FCLs types: inherent reaction on a fault, inherent post-fault recovery and unrestricted duration of a fault limiting period. However, they are not commercialized due to too large amount of magnetic material. The new three-phase FCL topology with a common core and trifilar windings is recently introduced. It considerably reduces the amount of FCL magnetic material and the associated FCL cost. To prove the concept and to demonstrate the FCL ability to protect the power system, the full-scale 10 kV/6.8 MVA FCL prototype is designed and built. The testing is divided in two stages: low-voltage 400 V and full-voltage 10 kV testing. This paper presents the obtained results from the low-voltage testing. The experimental results verified that the FCL can successfully limit a f...

Research paper thumbnail of Grid interaction of offshore wind farms. Part 2. Case study simulations

Wind Energy, 2005

Owing to an increasing penetration of wind turbines and large wind farms in electrical power syst... more Owing to an increasing penetration of wind turbines and large wind farms in electrical power systems, the wind turbines start influencing the overall power system behaviour. Dynamic wind farm models for power system studies have been presented in Part 1 of the article. In this contribution, these models are applied in a number of case studies to determine the impact of wind farms on the power grid. Four turbine concepts are evaluated with respect to their grid interaction. Case studies involving normal behaviour, voltage dip behaviour, voltage control capability and behaviour during frequency deviations will be presented.

Research paper thumbnail of New Three-Phase Inductive FCL With Common Core and Trifilar Windings

IEEE Transactions on Power Delivery, 2010

ABSTRACT Fault current limiters (FCLs) are expected to play an important role in the protection o... more ABSTRACT Fault current limiters (FCLs) are expected to play an important role in the protection of future power grids. Inductive FCLs are particularly interesting due to their inherent reaction to a fault, but are not commercialized because of a too large amount of magnetic material and an induced overvoltage across dc windings. This paper introduces a new three-phase FCL with a common core and trifilar windings. With the new FCL topology, the phase windings are placed on a single core, resulting in significant reduction of the amount of required magnetic material. Furthermore, the phase windings are wound simultaneously, so that the flux coupling between the phases is increased considerably. It cancels out the magnetic field and reduces the FCL normal impedance significantly. The dc windings are used only to compensate for possible asymmetry in the system currents. Consequently, the number of dc turns and the induced overvoltage are considerably decreased. Testing of a scaled-down FCL lab prototype made it possible to verify the FE simulation results and demonstrated the principle of operation of the new topology. Experimental and simulation results matched very well.

Research paper thumbnail of Virtual synchronous generator: An element of future grids

2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), 2010

The future power system integrated a large share of distributed generation (DG) may causes a redu... more The future power system integrated a large share of distributed generation (DG) may causes a reduction of the system rotational inertia, resulting in high frequency variations with any disturbances. An additional rotational inertia will be provided to the system if many DG units combined with relative small storage systems operate like virtual synchronous generators (VSG). This paper presents the demonstration

Research paper thumbnail of Laboratory and Field Trial Experiences with a Smart MV/LV Substation

eaton.nl

It is expected that the power flow in low-voltage (LV) and medium-voltage (MV) distribution grids... more It is expected that the power flow in low-voltage (LV) and medium-voltage (MV) distribution grids will start to fluctuate significantly in the near future due to the increasing penetration of dispersed generation within LV grids together with the global rise in energy demand (due to rising population and major electrification, for example). To manage these fluctuations while maintaining, or even improving, power quality and reliability, a smart substation has been developed by a Dutch consortium. A full-scale prototype of this substation has been assembled and its functionality validated by performing both laboratory and field trial testing. This paper highlights the most promising results of the laboratory tests, as well as from the half year field trial and the experience gained from the testing thus far.

Research paper thumbnail of DOWEC electrical system baseline design

Research paper thumbnail of Virtual synchronous generator: Laboratory scale results and field demonstration

2009 IEEE Bucharest PowerTech, 2009

... Vu Van Thong, Achim Woyte, Mihaela Albu, Marcel Van Hest, Jan Bozelie, Javier Diaz, Tom Loix,... more ... Vu Van Thong, Achim Woyte, Mihaela Albu, Marcel Van Hest, Jan Bozelie, Javier Diaz, Tom Loix, Dan Stanculescu, Klaas Visscher T Paper accepted for presentation at 2009 IEEE Bucharest Power Tech Conference, June 28th - July 2nd, Bucharest, Romania ...

Research paper thumbnail of Grid interaction of offshore wind farms. Part 1. Models for dynamic simulation

Wind Energy, 2005

In this contribution, dynamic wind farm models suitable for fast simulation of power systems are ... more In this contribution, dynamic wind farm models suitable for fast simulation of power systems are presented. While deriving the models, special attention has been paid to increasing the computational speed of the simulation program. An important increase in speed is realized by the use of the well-known dq0 transformation (Park transformation) not only for the generator but also for all other electrical components. The use of the Park transformation is common practice in electrical machine models, but not in the modelling of other electrical components. For single turbines, simulations in the dq0 reference frame are 100 times faster than simulations in the abc reference frame. After a discussion of the Park transformation and its most important properties, it is explained how models in the dq0 reference frame can be obtained.The dq0 models of the most important electrical components are presented. The mechanical and aerodynamic models that are needed for dynamic simulation of wind turbines are discussed briefly. The models are applied in Part 2. Ê Ëˆ[ ] q q 268 J. Morren et al.

Research paper thumbnail of Electrical and Control Aspects of Offshore Wind Farms II (Erao II). Volume 2: Offshore wind farm case studies

Wind Energy, 2012

Abstract: In The Netherlands offshore wind power is on the brink of implementation. Specific plan... more Abstract: In The Netherlands offshore wind power is on the brink of implementation. Specific plans exist for two offshore wind farms of about 100 MW, located 12 and 25 km from the coast of the province of North Holland. The effects of the incorporation of 6000 MW ...

Research paper thumbnail of Fast dynamic models of offshore wind farms for power system studies

Research paper thumbnail of Comparison of complete and reduced models of a wind turbine with Doubly-Fed Induction Generator

Wind turbines equipped with a Doubly-Fed Induction Generator are increasingly popular in the powe... more Wind turbines equipped with a Doubly-Fed Induction Generator are increasingly popular in the power range above 1 MW. For power system stability studies of large wind parks it is desirable to apply reduced models of the machine and the converter in order to limit the computation time. Several reduced models have been developed and evaluated. With respect to the generator,

Research paper thumbnail of Virtual synchronous generator: An element of future grids

The future power system integrated a large share of distributed generation (DG) may causes a redu... more The future power system integrated a large share of distributed generation (DG) may causes a reduction of the system rotational inertia, resulting in high frequency variations with any disturbances. An additional rotational inertia will be provided to the system if many DG units combined with relative small storage systems operate like virtual synchronous generators (VSG). This paper presents the demonstration