The DC power planning for network flexibility in the multi-area power system

Michi, L.; Donnini, Giacomo; Aluisio, Benedetto; Migliori, Michela; Vergine, Chiara; Dicorato, Maria; Forte, Giuseppe

doi:10.23919/aeit.2019.8893387

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…The utilization factor of a dc line can be calculated in a similar way. By using (20) and power flow pattern as in Fig. 11, an MTdc converter or a dc line can be sized accordingly.…”

Section: B Discussion About Hvdc and Mtdc Performancementioning

confidence: 99%

“…Because of the above limitations, it is crucial to develop a scalable linear-based method for MTdc grids that compromises both modeling accuracy and computational complexity. In conventional ac power systems, the Power Transmission Distribution Factor (PTDF)-based approach has been applied for fast power flow assessment [20], [21]. A similar application of the PTDF method is adopted to hybrid ac-dc systems [22]; however, the model of the dc grid is not explicitly addressed.…”

Section: B Literature Review and Research Gaps On Mtdc Transmission M...mentioning

confidence: 99%

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Benefits of Multi-Terminal HVdc Under Extreme Conditions via Production Cost Modeling Analyses

Nguyen,

Li,

Etingov

et al. 2024

IEEE Open J. Power Energy

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System operators rely on system flexibility to handle unexpected reliability and resilience events, ranging from excessive resource forecast errors to extreme events like heatwaves, earthquakes, and cyberattacks. This paper provides a production cost modeling (PCM) methodology to quantify contributions to system flexibility and economic benefits by controllable HVdc and multi-terminal HVdc (MTdc) transmission systems. First, the PCM model of a general MTdc grid is developed to be seamlessly added to existing scalable PCM model of an ac power system. Second, a method for modeling extreme operating conditions, including heatwave and wildfire, in PCM is presented. Finally, the planning 2030 Western Electricity Coordinating Council (WECC) system is used as an example to demonstrate the benefits of existing and future dc lines in point-to-point, radial, and meshed configurations. Under extreme system conditions including heatwave and wildfire, it is identified from the PCM simulation results that HVdc and MTdc transmission flexibility can provide substantial economic, reliability, and environmental benefits. These benefits include reductions up to 6.4% total generation cost, 8.6% unserved load, 50.3% renewable curtailment, 75% locational marginal price, and 4.0% CO2 emission amount.

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“…The utilization factor of a dc line can be calculated in a similar way. By using (20) and power flow pattern as in Fig. 11, an MTdc converter or a dc line can be sized accordingly.…”

Section: B Discussion About Hvdc and Mtdc Performancementioning

confidence: 99%

Section: B Literature Review and Research Gaps On Mtdc Transmission M...mentioning

confidence: 99%

Benefits of Multi-Terminal HVdc Under Extreme Conditions via Production Cost Modeling Analyses

Nguyen,

Li,

Etingov

et al. 2024

IEEE Open J. Power Energy

View full text Add to dashboard Cite

show abstract

“…The SNSP index has been selected from a specific set of feasible indicators assessing flexibility requirements for the power system [36] as the most representative of PEIG integration. Recent studies conducted by the Italian TSO have evaluated the average value of the SNSP index for the whole Italian power system [37] and for a specific critical section of the Italian power system [38].…”

Section: ) Maximum Level Of System Non-synchronous Penetrationmentioning

confidence: 99%

Technical and Economic Impact of the Inertia Constraints on Power Plant Unit Commitment

Mosca

Bompard

Chicco

et al. 2020

IEEE Open J. Power Energy

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The whole interconnected European network is involved in the energy transition towards power systems based on renewable power electronics interfaced generation. In this context, the major concerns for both network planning and operation are the inertia reduction and the frequency control due to the progressive decommissioning of thermal power plants with synchronous generators. This paper investigates the impact of different frequency control constraints on the unit commitment of power plants resulting from market simulations. The market outputs are compared in terms of system costs, and of frequency stability performance evaluated on the basis of the rate of change of frequency and the maximum frequency excursion. The best compromise solution is found using a multiple-criteria decision analysis method, depending on the choice of the decision maker's weighting factors. The proposed approach is tested on a real case taken from one of the most relevant future scenarios of the Italian transmission system operator. The results show how the best compromise solution that can be found depends on the decision maker preference towards cost-based or frequency stability-based criteria. Index Terms-frequency stability, inertia constraints, multiple-criteria decision analysis, power system inertia, rate of change of frequency, unit commitment.

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