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A New Approach for Benefit Evaluation of Multi-Terminal VSC-HVDC Using A Proposed Mixed AC/DC Optimal Power Flow

Feng Wang (Institutionen för energi och miljö, Elteknik) ; Tuan Le (Institutionen för energi och miljö, Elteknik) ; Lina Bertling (Institutionen för energi och miljö, Elteknik) ; Anders Mannikoff ; Anders Bergman
IEEE Transactions on Power Delivery (0885-8977). Vol. 29 (2014), 1,
[Artikel, refereegranskad vetenskaplig]

In this paper, an extended Optimal Power Flow (OPF) model incorporating a detailed model of a Voltage Source Converter based Multi-Terminal High Voltage Direct Current system (VSC-MTDC) is proposed, hereafter referred to as the Mixed ac/dc OPF (M-OPF) model. A cost-benefit analysis approach using the M-OPF model as the calculation engine is proposed to determine the preferred VSC-MTDC alternative to be installed in an existing ac transmission system. In this approach, the operational benefits of VSC-MTDC systems are evaluated against their investment costs to derive the Benefit-to-Cost Ratios (BCR) which reflect the cost-effectiveness of the alternatives. A case study has been carried out using a modified Nordic 32-bus system. The results of the study show that VSC-MTDC systems might lead to a reduction in total operation cost, and the reduction of the total system transmission loss depends to a large extent on the VSC-MTDC configuration. The results from sensitivity analyses show that if the VSC loss could be reduced to a third of the original level, the total benefit from the system would be increased by about 70%. A suggestion for the placement and configuration of a VSC-MTDC system is made based on calculated BCRs.

Nyckelord: AC/DC system, Cost minimization, Cost-Benefit Analysis, Loss minimization, Multi-terminal VSC-HVDC, Optimal Power Flow.



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Denna post skapades 2013-06-27. Senast ändrad 2015-03-03.
CPL Pubid: 179415

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik (2005-2017)

Ämnesområden

Energi
Elkraftteknik

Chalmers infrastruktur