Impact of Multi-terminal HVDC Grids on Enhancing Dynamic Power Transfer Capability

Assis, Tatiana M. L.; Kuenzel, Stefanie; Pal, Bikash C.

doi:10.1109/tpwrs.2016.2617399

Cited by 19 publications

(9 citation statements)

References 29 publications

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“…The factor k q depends on the reactive power support provided by the RSS converter and is equal to 1 if the full load reactive power (Q rated ) is supported by the RSS converter. The total apparent power capacity of the system S cap,n-1 is given by (13).…”

Section: Reconfiguration During (N-1) Contingenciesmentioning

confidence: 99%

“…Depending on the number of conductors operating under ac and dc conditions, the unused healthy conductors in the system can be minimized. Further, since dc has inherently higher power delivery capacity as compared to ac conductors of the same cross-sectional area, the maximum achievable capacity during (n-1) contingencies varies with each configuration as described by (13), constrained by the installed converter capacity factor k cr . Fig.…”

Section: Reconfiguration During (N-1) Contingenciesmentioning

confidence: 99%

“…In [12], optimal operation of DG is coordinated with upgradation of distribution lines and high/medium voltage transformers with an objective to minimize the investment, operational loss and reliability cost. A dynamic improvement of inter-area power transfer capability is suggested in [13] for under-utilized HVDC grid infrastructure under low wind conditions. Reference [14] maximizes the hosting capacity of distribution network (DN) by optimizing the chargeable region of EVs given the power quality constraints and uncertainty in demand.…”

Section: Introductionmentioning

confidence: 99%

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Offline Reconfigurability Based Substation Converter Sizing for Hybrid AC–DC Distribution Links

Shekhar

Soeiro

Ramírez-Elizondo

et al. 2020

IEEE Trans. Power Delivery

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Hybrid ac-dc distribution systems with multiple parallel operating ac and dc links are being developed to maximize system capacity during (n-1) contingencies. This paper shows that offline reconfigurability between such ac and dc links post-fault clearance allows an additional design flexibility of reducing the required substation converter rating to maintain the same required capacity by maximizing the utilization of healthy infrastructure. The associated variation of system capacity with power rating and number of substation converters is determined for different types of component faults. It is discussed that while converter downsizing is possible, as a consequence the parallel ac-dc link system is forced to operate at a sub-optimal efficiency during normal conditions. Using case-studies, the economics of this trade-off is quantified for determining the optimal de-rating factor for varying grid voltage, link length and conductor area.

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Section: Reconfiguration During (N-1) Contingenciesmentioning

confidence: 99%

Section: Reconfiguration During (N-1) Contingenciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Offline Reconfigurability Based Substation Converter Sizing for Hybrid AC–DC Distribution Links

Shekhar

Soeiro

Ramírez-Elizondo

et al. 2020

IEEE Trans. Power Delivery

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“…It shows that whence DC grid is employed with two-area system some of the power flows through the HVDC network, hence enhancing the power transmission capability as well as the stability of the system. In [32], the authors computed 749 MW as maximum power transfer capability of Kunder's two area system which is 381 MW less than 1130 MW. Thus, proposed approach based on DC OPF gives improved power transmission results for AC systems when connected with MT-HVDC girds.…”

Section: Interconnected Ac/dc Grid Simulations and Nomogrammentioning

confidence: 99%

“…Methods on enhancing the inter-area power transfer capability with security region determination is lacking in the literature. The influence of MT-HVDC on AC grids is discussed in [32] but without DC OPF. Even the international council on large electric systems (in French: Conseil International des Grands Réseaux Électriques, CIGRE) joint working group B4, C1 and C4 did not discuss the inter-area power transfer capability and security margins in its report [33].…”

Section: Introductionmentioning

confidence: 99%

Impacts of MT-HVDC Systems on Enhancing the Power Transmission Capability

et al. 2019

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In this paper, improvement in the power transfer capacity of transmission lines (TLs) by utilizing a multi-terminal high voltage direct current (MT-HVDC) grid is discussed. A multi-terminal HVDC grid designed for wind power can be used as an extra transmission path in interconnected systems during low wind conditions, and provides extra dynamic stability and security. This paper deals with the power transfer capacity as well as the small signal (SS) stability assessments in less damped oscillations accompanying inter area modes. Computation of the maximum allowable power transfer capability is assessed via DC optimal power flow-based control architecture, permitting more power transfer with a definite security margin. The test system is assessed with and without the exploitation of MT-HVDC grid. Simulation work is done using a generic computational framework i.e., international council on large electric systems (CIGRE) B4 test bench with a Kundur’s two area system, shows that voltage source converters (VSCs) provide excellent control and flexibility, improving the power transfer capability keeping the system stable.

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Optimal allocation of flexible AC transmission system (FACTS) for wind turbines integrated power system

Awad,

Kamel,

Hassan

et al. 2023

Energy Science & Engineering

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The importance of flexible alternating current transmission system (FACTS) devices is increasing day by day as they provide compensation for power systems. The installation of such devices solves many issues regarding the stability and power transferability of power systems. However, for optimizing the performance of FACTS devices, the location and sizes of FACTS devices must be selected very carefully. On the other side, the utilization of optimization techniques is increasing daily, as it is capable of solving nonlinear, random problems by its stochastic nature. As a result, it became a reliable tactic for solving stochastic problems almost in every aspect of our lives. Therefore, it is adopted for solving power system problems, like, FACTS devices allocation, distributed generators allocation, determining component's parameters, and more. In this paper, the optimal size and location of several FACTS devices are selected to achieve the following single objective functions separately: fuel cost minimization and power losses minimization, then combining the mentioned objective function into one multiobjective function for gross cost minimization. The power system optimized is the Institute of Electrical and Electronics Engineers 30‐bus standard system, and the FACTS devices installed are static VAR compensator, thyristor control series compensator, and thyristor‐controlled phase shifter, while the optimization is performed using different conventional and recent optimization algorithms, including a newly developed algorithm, typically Leader Walrus Optimization Algorithm “LWaOA,” making a comparison among such algorithms to investigate the algorithm that possesses the best performance. The results of the optimization processes show the superiority of LWaOA.

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Impact of Multi-terminal HVDC Grids on Enhancing Dynamic Power Transfer Capability

Cited by 19 publications

References 29 publications

Offline Reconfigurability Based Substation Converter Sizing for Hybrid AC–DC Distribution Links

Offline Reconfigurability Based Substation Converter Sizing for Hybrid AC–DC Distribution Links

Impacts of MT-HVDC Systems on Enhancing the Power Transmission Capability

Optimal allocation of flexible AC transmission system (FACTS) for wind turbines integrated power system

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