The Experts below are selected from a list of 45639 Experts worldwide ranked by ideXlab platform
Feifei Bai - One of the best experts on this subject based on the ideXlab platform.
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the anatomy of the 2016 south australia blackout a catastrophic event in a high renewable network
IEEE Transactions on Power Systems, 2018Co-Authors: Ruifeng Yan, Nahidal Masood, T K Saha, Feifei BaiAbstract:Over the last decade, many power systems have significantly changed with the proliferation of renewable generation sources, such as wind and solar photovoltaic. Due to their variability and nonsynchronous nature, new challenges and complexities have emerged regarding Operational Security of modern power systems. The 2016 South Australia (SA) blackout was the first known blackout due to such a high renewable situation. An official report has recently been published to review the causes and provide the corresponding recommendations for improvement of network operation, control, and Security. However, there are still a number of critical issues and debates which remain unsolved, such as network bottleneck identification, overvoltage explanation, pole slip concern, frequency dip mystery, and frequency/voltage instability debate. In this paper, based on the reconstruction of the event, these unsettled issues are prudently analyzed to unveil their root causes. In addition, an innovative scheme is proposed to prevent the blackout by identifying the network separation at an early stage. This research will not only further advance the understanding of the 2016 SA blackout, but also will provide valuable guidelines for the management of future renewable-rich networks.
Gu Huajie - One of the best experts on this subject based on the ideXlab platform.
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System Strength and Inertia Constrained Optimal Generator Dispatch under High Renewable Penetration
'Institute of Electrical and Electronics Engineers (IEEE)', 2019Co-Authors: Gu Huajie, Yan Ruifeng, Saha, Tapan K., Muljadi EduardAbstract:System strength and inertia inherently provided by synchronous generators (SGs) empower a power system to ride through voltage and frequency disturbances. The requirements of system strength and inertia were not enforced in the National Electricity Market (NEM) of Australia since SGs dominated the generation fleet in the past. However, the increasing wind and solar generation continuously displaces SGs and consequently reduces system strength and inertia in the NEM. This paper proposes a formulation of system strength and inertia constrained generator dispatch to reassure NEM Operational Security in light of emerging high renewable penetration. A fault current iterative solver is developed to evaluate system strength, in which the current limitation and voltage control logics of inverter-based generators, and the fault current contribution from VAR compensators are properly modelled in the phasor domain. The system strength contribution factor of an SG is defined to linearize system strength constraint for unit commitment (UC). System and sub-network inertia constraints are also formulated for the UC to limit the rate of change of frequency (RoCoF) in the event of generator/interconnector trip. The proposed generator dispatch formulation can fully meet system strength and inertia requirements in the NEM
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Review of system strength and inertia requirements for the national electricity market of Australia
'Power System Technology Press', 2019Co-Authors: Gu Huajie, Yan Ruifeng, Saha TapanAbstract:Synchronous generators (SGs) are still making major contributions to the re-stabilization of a power system following voltage/frequency disturbances, attributed to their inherent capability of providing system strength and inertia. However, SGs powered by fossil fuels are operating to a lesser extent and scheduled for decommissioning in the National Electricity Market (NEM) of Australia due to the accelerating increase of low bidding priced asynchronous generation of wind and solar, which leads to the reduction and even in some cases, a shortage of system strength and inertia. This paper comprehensively reviews the requirements of system strength and inertia in the NEM from an Operational Security perspective. Australia is the first country that established the regulation rules of system strength and inertia to accommodate issues of an emerging high penetration level of non-synchronous renewable generation
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The anatomy of the 2016 South Australia blackout: a catastrophic event in a high renewable network
'Institute of Electrical and Electronics Engineers (IEEE)', 2018Co-Authors: Yan Ruifeng, Saha, Tapan K., Al Masood Nahid, Bai Feifei, Gu HuajieAbstract:Over the last decade, many power systems have significantly changed with the proliferation of renewable generation sources such as wind and solar photovoltaic (PV). Due to their variability and non-synchronous nature, new challenges and complexities have emerged regarding Operational Security of modern power systems. The 2016 South Australia (SA) blackout exactly occurred under such a high renewable situation. An official report has been recently published to review the causes and provide the corresponding recommendations for improvement of network operation, control and Security. However, there are still a number of critical issues and debates which remain unsolved, such as network bottleneck identification, over-voltage explanation, pole slip concern, frequency dip mystery, and frequency/voltage instability debate. In this paper, based on the reconstruction of the event, these unsettled issues are prudently analyzed to unveil their root causes. In addition, an innovative scheme is proposed to prevent the blackout by identifying the network separation at an early stage. This research will not only further advance the understanding of the 2016 SA blackout but also will provide valuable guidelines for the management of future renewable-rich networks
Ruifeng Yan - One of the best experts on this subject based on the ideXlab platform.
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the anatomy of the 2016 south australia blackout a catastrophic event in a high renewable network
IEEE Transactions on Power Systems, 2018Co-Authors: Ruifeng Yan, Nahidal Masood, T K Saha, Feifei BaiAbstract:Over the last decade, many power systems have significantly changed with the proliferation of renewable generation sources, such as wind and solar photovoltaic. Due to their variability and nonsynchronous nature, new challenges and complexities have emerged regarding Operational Security of modern power systems. The 2016 South Australia (SA) blackout was the first known blackout due to such a high renewable situation. An official report has recently been published to review the causes and provide the corresponding recommendations for improvement of network operation, control, and Security. However, there are still a number of critical issues and debates which remain unsolved, such as network bottleneck identification, overvoltage explanation, pole slip concern, frequency dip mystery, and frequency/voltage instability debate. In this paper, based on the reconstruction of the event, these unsettled issues are prudently analyzed to unveil their root causes. In addition, an innovative scheme is proposed to prevent the blackout by identifying the network separation at an early stage. This research will not only further advance the understanding of the 2016 SA blackout, but also will provide valuable guidelines for the management of future renewable-rich networks.
Yan Ruifeng - One of the best experts on this subject based on the ideXlab platform.
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System Strength and Inertia Constrained Optimal Generator Dispatch under High Renewable Penetration
'Institute of Electrical and Electronics Engineers (IEEE)', 2019Co-Authors: Gu Huajie, Yan Ruifeng, Saha, Tapan K., Muljadi EduardAbstract:System strength and inertia inherently provided by synchronous generators (SGs) empower a power system to ride through voltage and frequency disturbances. The requirements of system strength and inertia were not enforced in the National Electricity Market (NEM) of Australia since SGs dominated the generation fleet in the past. However, the increasing wind and solar generation continuously displaces SGs and consequently reduces system strength and inertia in the NEM. This paper proposes a formulation of system strength and inertia constrained generator dispatch to reassure NEM Operational Security in light of emerging high renewable penetration. A fault current iterative solver is developed to evaluate system strength, in which the current limitation and voltage control logics of inverter-based generators, and the fault current contribution from VAR compensators are properly modelled in the phasor domain. The system strength contribution factor of an SG is defined to linearize system strength constraint for unit commitment (UC). System and sub-network inertia constraints are also formulated for the UC to limit the rate of change of frequency (RoCoF) in the event of generator/interconnector trip. The proposed generator dispatch formulation can fully meet system strength and inertia requirements in the NEM
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Review of system strength and inertia requirements for the national electricity market of Australia
'Power System Technology Press', 2019Co-Authors: Gu Huajie, Yan Ruifeng, Saha TapanAbstract:Synchronous generators (SGs) are still making major contributions to the re-stabilization of a power system following voltage/frequency disturbances, attributed to their inherent capability of providing system strength and inertia. However, SGs powered by fossil fuels are operating to a lesser extent and scheduled for decommissioning in the National Electricity Market (NEM) of Australia due to the accelerating increase of low bidding priced asynchronous generation of wind and solar, which leads to the reduction and even in some cases, a shortage of system strength and inertia. This paper comprehensively reviews the requirements of system strength and inertia in the NEM from an Operational Security perspective. Australia is the first country that established the regulation rules of system strength and inertia to accommodate issues of an emerging high penetration level of non-synchronous renewable generation
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The anatomy of the 2016 South Australia blackout: a catastrophic event in a high renewable network
'Institute of Electrical and Electronics Engineers (IEEE)', 2018Co-Authors: Yan Ruifeng, Saha, Tapan K., Al Masood Nahid, Bai Feifei, Gu HuajieAbstract:Over the last decade, many power systems have significantly changed with the proliferation of renewable generation sources such as wind and solar photovoltaic (PV). Due to their variability and non-synchronous nature, new challenges and complexities have emerged regarding Operational Security of modern power systems. The 2016 South Australia (SA) blackout exactly occurred under such a high renewable situation. An official report has been recently published to review the causes and provide the corresponding recommendations for improvement of network operation, control and Security. However, there are still a number of critical issues and debates which remain unsolved, such as network bottleneck identification, over-voltage explanation, pole slip concern, frequency dip mystery, and frequency/voltage instability debate. In this paper, based on the reconstruction of the event, these unsettled issues are prudently analyzed to unveil their root causes. In addition, an innovative scheme is proposed to prevent the blackout by identifying the network separation at an early stage. This research will not only further advance the understanding of the 2016 SA blackout but also will provide valuable guidelines for the management of future renewable-rich networks
Nahidal Masood - One of the best experts on this subject based on the ideXlab platform.
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the anatomy of the 2016 south australia blackout a catastrophic event in a high renewable network
IEEE Transactions on Power Systems, 2018Co-Authors: Ruifeng Yan, Nahidal Masood, T K Saha, Feifei BaiAbstract:Over the last decade, many power systems have significantly changed with the proliferation of renewable generation sources, such as wind and solar photovoltaic. Due to their variability and nonsynchronous nature, new challenges and complexities have emerged regarding Operational Security of modern power systems. The 2016 South Australia (SA) blackout was the first known blackout due to such a high renewable situation. An official report has recently been published to review the causes and provide the corresponding recommendations for improvement of network operation, control, and Security. However, there are still a number of critical issues and debates which remain unsolved, such as network bottleneck identification, overvoltage explanation, pole slip concern, frequency dip mystery, and frequency/voltage instability debate. In this paper, based on the reconstruction of the event, these unsettled issues are prudently analyzed to unveil their root causes. In addition, an innovative scheme is proposed to prevent the blackout by identifying the network separation at an early stage. This research will not only further advance the understanding of the 2016 SA blackout, but also will provide valuable guidelines for the management of future renewable-rich networks.
