Application of dynamic rating to evaluation of ATC with thermal constraints considering weather conditions

Miura, M.; Satoh, Takuya; Iwamoto, Satoshi; Kurihara, Ikuo

doi:10.1109/pes.2006.1709107

Cited by 9 publications

(3 citation statements)

References 2 publications

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“…Similarly, the security constrained economic dispatch and optimal power flow combined with DLR were also considered in [112][113][114]. The impact of DLR implementation on improving the available transfer capacity was specifically discussed in [115,116]. A linear programming-based optimization implemented for two different minimization oriented objectives of either power losses or generation costs was proposed in [117] for a case in Newfoundland, Canada.…”

Section: Solely Dlr Based Operational Flexibilitymentioning

confidence: 99%

A Comprehensive Overview of Dynamic Line Rating Combined with Other Flexibility Options from an Operational Point of View

et al. 2020

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The need for flexibility in power system operation gradually increases regarding more renewable energy integration, load growth, etc., and the system operators already invest in this manner to enhance the power system operation. Besides, the power system has thermally sensitive assets such as lines, transformers, etc. that are normally operated under highly conservative static ratings. There is a growing trend in this regard to use the actual capacity of such assets dynamically under varying operating conditions leading to a dynamic thermal rating concept which is referred as dynamic line rating (DLR) approach specifically for lines. This study provides a comprehensive overview of existing perspectives on DLR and combination with other flexibility options from an operational point of view. Apart from the existing review studies more focused on implementation category of DLR concept, the concentration on more operational stage from the power system operation point of view leads the difference of this study compared to the mentioned studies. A categorization of the DLR implementation for either being sole or combined usage as a flexibility option is further realized. Besides, a geographically categorized analysis on existing practical evidence on DLR concept and implementations is also presented in this study.

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Section: Solely Dlr Based Operational Flexibilitymentioning

confidence: 99%

A Comprehensive Overview of Dynamic Line Rating Combined with Other Flexibility Options from an Operational Point of View

et al. 2020

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“…The constraints are those of a DC power flow, and are described in [18] and [22]. Here, N-1 constraints are added to account for the risks of line failure, as proposed in [24], which investigates DLR use for transfer capacity setting.…”

Section: A Risk Neutral Strategy -Vertically Integrated Monopolymentioning

confidence: 99%

Optimal Dynamic Line Rating Forecasts Selection Based on Ampacity Probabilistic Forecasting and Network Operators’ Risk Aversion

Dupin

Michiorri

2019

IEEE Trans. Power Syst.

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Real-time current-carrying capacity of overhead conductors is extremely variable due to its dependence on weather conditions, resulting in the use of traditionally conservative static ratings. This paper proposes a methodology for exploiting the latent current-carrying capacity of overhead transmission lines taking into account line ampacity forecasts, power flow simulations and the network operator's risk aversion. The procedure can be described as follows: Firstly, probabilistic forecasts for the current rating of transmission lines are generated, paying particular attention to the reliability of the lower part of the distribution. Secondly, a cost benefit analysis is carried out by solving a bilevel stochastic problem that takes into account the reduction in generation costs resulting from a higher power transfer capacity and the increased use of reserves caused by forecast errors. The risk appetite of the network operator is considered in order to accept or penalize high-risk situations, depending on whether the network operator can be described as risk neutral or risk averse.

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“…In the system operation, the utilization of the DLR has studied in order to allow a reduction in the required spinning reserve [8], reducing wind power spillage [8], [9], and avoiding the re-dispatch of generating units and load shedding [7]. The improvement provided by the available transfer capacity (ATC) considering DLR instead of SLR is discussed in [10].…”

Section: Introductionmentioning

confidence: 99%

Security constrained unit commitment with dynamic thermal line rating

2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

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Abstract-The integration of the dynamic line rating (DLR) of overhead transmission lines (OTLs) in power systems security constrained unit commitment (SCUC) potentially enhances the overall system security as well as its technical/economic performances. This paper proposes a scalable and computationally efficient approach aimed at integrating the DLR in SCUC problem. The paper analyzes the case of the SCUC with AC load flow constraints. The AC-optimal power flow (AC-OPF) is linearized and incorporated into the problem. The proposed multi-period formulation takes into account a realistic model to represent the different terms appearing in the Heat-Balance Equation (HBE) of the OTL conductors. In order to include the HBE in the OPF, a relaxation is proposed for the heat gain associated to resistive losses while the inclusion of linear approximations are investigated for both convection and radiation heat losses. A decomposition process relying on the Benders decomposition is used in order to breakdown the problem and incorporate a set of contingencies representing both generators and line outages. The effects of different linearization, as well as time step discretization of HBE, are investigated. The scalability of the proposed method is verified using IEEE 118-bus test system.

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Application of dynamic rating to evaluation of ATC with thermal constraints considering weather conditions

Cited by 9 publications

References 2 publications

A Comprehensive Overview of Dynamic Line Rating Combined with Other Flexibility Options from an Operational Point of View

A Comprehensive Overview of Dynamic Line Rating Combined with Other Flexibility Options from an Operational Point of View

Optimal Dynamic Line Rating Forecasts Selection Based on Ampacity Probabilistic Forecasting and Network Operators’ Risk Aversion

Security constrained unit commitment with dynamic thermal line rating

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