The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
Jean Tirole - One of the best experts on this subject based on the ideXlab platform.
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transmission rights and market power on electric power networks ii physical rights
1999Co-Authors: Paul L Joskow, Jean TiroleAbstract:We examine whether and how the allocation of physical rights to utilize congested transmission links affects the behavior of electricity generators and electricity consumers with market power in the electricity market. The paper extends the analysis of financial transmission rights contained in a companion paper to the physical rights case. The analysis recognizes that the ultimate allocation of transmission rights is endogenous, depending both on whether transmission rights can enhance market power and the microstructure of the rights market. Three Alternative rights market microstructures are examined. The analysis initially focuses on a two-node network where there are cheap supplies available in an exporting region, expensive supplies in an importing region, and a congested transmission link between the two regions. Several other market power configurations are examined in less detail. The allocation of physical rights can cause production inefficiency due to withholding of physical rights from the market, an effect that is not observed for financial rights. Extension to a three-node network to allow for loopFlows does not change the basic results, but does reveal complications associated with the creation of and accounting for physical transmission rights when there is loop Flow. Alternative "capacity release" rules are considered as a response to rights withholding problems. The paper concludes with a comparison of the welfare properties of financial and physical rights from a market power enhancement perspective.
Paul L Joskow - One of the best experts on this subject based on the ideXlab platform.
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transmission rights and market power on electric power networks ii physical rights
1999Co-Authors: Paul L Joskow, Jean TiroleAbstract:We examine whether and how the allocation of physical rights to utilize congested transmission links affects the behavior of electricity generators and electricity consumers with market power in the electricity market. The paper extends the analysis of financial transmission rights contained in a companion paper to the physical rights case. The analysis recognizes that the ultimate allocation of transmission rights is endogenous, depending both on whether transmission rights can enhance market power and the microstructure of the rights market. Three Alternative rights market microstructures are examined. The analysis initially focuses on a two-node network where there are cheap supplies available in an exporting region, expensive supplies in an importing region, and a congested transmission link between the two regions. Several other market power configurations are examined in less detail. The allocation of physical rights can cause production inefficiency due to withholding of physical rights from the market, an effect that is not observed for financial rights. Extension to a three-node network to allow for loopFlows does not change the basic results, but does reveal complications associated with the creation of and accounting for physical transmission rights when there is loop Flow. Alternative "capacity release" rules are considered as a response to rights withholding problems. The paper concludes with a comparison of the welfare properties of financial and physical rights from a market power enhancement perspective.
Tracy Rolstad - One of the best experts on this subject based on the ideXlab platform.
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computationally efficient identification of power Flow Alternative solutions with application to geomagnetic disturbance analysis
2020 IEEE Texas Power and Energy Conference (TPEC), 2020Co-Authors: Komal S Shetye, Thomas J Overbye, Adam B Birchfield, James D Weber, Tracy RolstadAbstract:It is common knowledge that the power Flow can have multiple solutions; one is the normal (desired) solution while the others are Alternative solutions, which are sometimes characterized by low voltages. Usually these Alternative solutions represent erroneous or unstable operation conditions. The paper presents a method for quickly assessing whether the power Flow has likely converged to an Alternative solution by considering, on a bus by bus basis, the sensitivity of the bus voltage magnitude to a change in the bus's reactive power injection, coupled with whether the bus is closely connected with negative reactance branches. Sparse vector methods are used to calculate these sensitivities quickly even for large systems with 10,000+ buses. The paper shows that these solutions can be particularly problematic when assessing voltage stability impacts of geomagnetic disturbances on the grid, and uses the method to identify problematic areas of a system under a GMD event.
Komal S Shetye - One of the best experts on this subject based on the ideXlab platform.
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computationally efficient identification of power Flow Alternative solutions with application to geomagnetic disturbance analysis
2020 IEEE Texas Power and Energy Conference (TPEC), 2020Co-Authors: Komal S Shetye, Thomas J Overbye, Adam B Birchfield, James D Weber, Tracy RolstadAbstract:It is common knowledge that the power Flow can have multiple solutions; one is the normal (desired) solution while the others are Alternative solutions, which are sometimes characterized by low voltages. Usually these Alternative solutions represent erroneous or unstable operation conditions. The paper presents a method for quickly assessing whether the power Flow has likely converged to an Alternative solution by considering, on a bus by bus basis, the sensitivity of the bus voltage magnitude to a change in the bus's reactive power injection, coupled with whether the bus is closely connected with negative reactance branches. Sparse vector methods are used to calculate these sensitivities quickly even for large systems with 10,000+ buses. The paper shows that these solutions can be particularly problematic when assessing voltage stability impacts of geomagnetic disturbances on the grid, and uses the method to identify problematic areas of a system under a GMD event.
Thomas J Overbye - One of the best experts on this subject based on the ideXlab platform.
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computationally efficient identification of power Flow Alternative solutions with application to geomagnetic disturbance analysis
2020 IEEE Texas Power and Energy Conference (TPEC), 2020Co-Authors: Komal S Shetye, Thomas J Overbye, Adam B Birchfield, James D Weber, Tracy RolstadAbstract:It is common knowledge that the power Flow can have multiple solutions; one is the normal (desired) solution while the others are Alternative solutions, which are sometimes characterized by low voltages. Usually these Alternative solutions represent erroneous or unstable operation conditions. The paper presents a method for quickly assessing whether the power Flow has likely converged to an Alternative solution by considering, on a bus by bus basis, the sensitivity of the bus voltage magnitude to a change in the bus's reactive power injection, coupled with whether the bus is closely connected with negative reactance branches. Sparse vector methods are used to calculate these sensitivities quickly even for large systems with 10,000+ buses. The paper shows that these solutions can be particularly problematic when assessing voltage stability impacts of geomagnetic disturbances on the grid, and uses the method to identify problematic areas of a system under a GMD event.