HVDC macrogrid modeling for power-flow and transient stability studies in north american continental-level interconnections

Elizondo, Marcelo; Mohan, Nihal; Brien, James O; Huang, Qiuhua; Orser, David; Hess, W. B.; Brown, H. E.; Zhu, W.; Chandrashekhara, Divya K; Makarov, Yuri V.; Osborn, Dale; Feltes, J.W.; Kirkham, Harold; Duebner, David; Huang, Zhenyu; Operator, Midcontinent Independent System; PTI, Siemens

doi:10.17775/cseejpes.2017.00420

Cited by 25 publications

(21 citation statements)

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“…The minimum bidirectional load diversity found over the years 2006 through 2012 is shown in Fig. 1 [32,33]. For such long distance overhead line multi-gigawatts transmission corridors, the desired HVDC transmission schemes must have the following combined features: (i) flexible power flow allowing power flow reversal without power interruption; (ii) reliable AC/DC fault ride-through capabilities.…”

Section: Introductionmentioning

confidence: 99%

Operation and control of hybrid HVDC system with LCC and full‐bridge MMC connected in parallel

Xiao

Sun

Pan

et al. 2020

IET gener. transm. distrib.

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Section: Introductionmentioning

confidence: 99%

Operation and control of hybrid HVDC system with LCC and full‐bridge MMC connected in parallel

Xiao

Sun

Pan

et al. 2020

IET gener. transm. distrib.

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“…5) Geographic and resource diversity provide additional reliability to the system, such as frequency response sharing and AC voltage support [23,24].…”

Section: Point-to-point Hvdc Vs Multi-terminal Hvdcmentioning

confidence: 99%

“…The authors in [38] shows that the annual savings of US power consumers with a national HVDC transmission overlay is estimated to be US$47.2 billion, which is almost three times of the cost of the HVDC transmission. Study in [24] shows that one of the HVDC configuration, the so called "Macrogrid", could yield a benefit-to-cost ratio of 2.5 under carbon policy scenarios with growing carbon taxes.…”

Section: The Us Macrogridmentioning

confidence: 99%

“…In addition to the economic benefits, network configuration of HVDC lines will result in additional benefits, such as reliability and ancillary service benefits. A study in [24] made the initial effort to develop a 100k bus transient stability model for the Macrogrid interconnecting EI and WI (Design 3), although with the assumption that all HVDC sections are LCC-HVDC links. The study demonstrated preliminary reliability benefits to provide primary frequency support between the interconnections via HVDC.…”

Section: The Us Macrogridmentioning

confidence: 99%

“…The steady state operating point of the test case is modified to proportionally emulate the percentage of load transmitted between the WI to EI in the practical case developed in [24].…”

Section: Design Of the Operating Pointmentioning

confidence: 99%

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Control of multi-terminal VSC-HVDC systems for combined AC/DC systems to improve power system dynamic performance

Zhang¹

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Optimizing power system stability: An artificial neural network approach for controlling variable frequency transformer

Sheikh,

Bakhsh

2023

Circuit Theory & Apps

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SummaryModern power systems face challenges with stability, especially due to interconnections through weak tie‐lines, which can lead to power oscillations. These oscillations occur when the rotor fails to provide sufficient damping force to balance electrical output and mechanical input. Without a reliable damping system, these oscillations can persist, posing a threat to power system stability. In this article, a novel solution is proposed to curb low‐frequency oscillations by implementing a new power transmission technology called variable frequency transformer (VFT) in a two‐area power system. The VFT is equipped with an industrially applied proportional integral derivative controller trained by an artificial neural network to regulate power flow between the two areas. Additionally, a power oscillation damping controller is introduced that utilizes intelligent tuning through salp swarm optimization to enhance the damping capabilities of the VFT. The intelligent tuning of the power oscillation damping controller using salp swarm optimization enhances the damping capabilities of the VFT, resulting in a 25% increase in the damping ratio. To evaluate the performance of the VFT‐based system, it has been compared with a well‐established high voltage direct current (HVDC) system through a three‐phase fault analysis and reactive power requirement. Quantitatively, the proposed VFT system achieves a significant improvement in damping power oscillations, reducing their amplitudes by 30% compared to the HVDC system. Furthermore, the system is linearized under specific operating conditions, and eigenvalue analysis is conducted to assess power system stability for both VFT and HVDC cases. Through time‐domain simulations and eigenvalue analysis, our findings demonstrate that the VFT system surpasses the HVDC system in various operational and control aspects, highlighting its positive impact on power system stability.

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HVDC macrogrid modeling for power-flow and transient stability studies in north american continental-level interconnections

Cited by 25 publications

References 0 publications

Operation and control of hybrid HVDC system with LCC and full‐bridge MMC connected in parallel

Operation and control of hybrid HVDC system with LCC and full‐bridge MMC connected in parallel

Control of multi-terminal VSC-HVDC systems for combined AC/DC systems to improve power system dynamic performance

Optimizing power system stability: An artificial neural network approach for controlling variable frequency transformer

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