Interactions between the AC voltages and DC current in weak AC/DC interconnections

Hatziadoniu, Constantine J.; Galanos, G.

doi:10.1109/61.194021

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…The major phenomenon resulting from the AC/DC interactions and which can limit DC power transfer is the risk of AC voltage instability at the HVDC terminal, particularly in low SCR (Short-Circuit Ratio) applications. For given system conditions, an HVDC link always has a maximum power transfer limit which is related to the well known problem of AC voltage collapse due to the coupling between AC voltage and DC power variations [62][63][64][65][66][67]. Thus, an assessment of the phenomena to indicate any power transfer limitations or increased available power margins and associated critical voltage levels should be carried out when an HVDC is to be used as an emergency measure.…”

Section: Discussionmentioning

confidence: 99%

Power system security enhancement by HVDC links using a closed-loop emergency control

Benasla

Allaoui

Brahami

et al. 2019

Electric Power Systems Research

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Section: Discussionmentioning

confidence: 99%

Power system security enhancement by HVDC links using a closed-loop emergency control

Benasla

Allaoui

Brahami

et al. 2019

Electric Power Systems Research

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“…A lot of work has been done to mathematical model the MIIF [23,27], but the outstanding problem is behavior of converter j direct current in response of variation in converter i direct current. The interaction of single infeed direct current with ac bus voltage is discussed in [28], where the step decreases in direct current increase ac bus voltage. This supports the theory presented in this paper.…”

Section: Proposed Multi-infeed Current Interaction Factor (Micif)mentioning

confidence: 99%

Estimation of multi-infeed HVDC inter converter direct current interaction in close electric proximity

Rehman¹,

Rehman

Khan

et al. 2023

Mehran Univ. res. j. eng. technol.

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This paper aims at investigating the direct current interaction between various converters of High Voltage Direct Current (HVDC) system, which lie in close electric proximity within the multi-infeed configuration. The interaction between converters in multi-infeed DC system are highly possible events which need to be evaluated in order to avoid the adverse operational results. The various indices such as multi-infeed interaction factor (MIIF) considering AC busbar voltages, local and concurrent commutation failures (CF) in converter stations under different AC disturbances, influence of AC system’s strength on fault recovery time (FRT), transient over-voltage (TOV) under permanent DC faults, voltage and power stability of multi-infeed DC system are comprehensively illustrated in literatures. However, there is lack of literature regarding the investigation of current interaction in multi-infeed DC system. Therefore, in this paper, a power flow approach is adopted to estimate the inter converter direct current interaction. An index, multi-infeed current interaction factor (MICIF) is proposed that can effectively depicts the interaction between converters. The MICIF index is verified through electromagnetic transient simulations of dual infeed HVDC system developed in PSCAD/EMTDC. The results show that MICIF index can accurately assess the interaction between different converter stations of HVDC system under steady and transient states.

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“…These can become a problem for the operation of the distribution system. In weak electrical systems, an interaction between ac voltages and dc currents can occur [12]. It becomes imperative that a consumer must not only consider TDD at PCC but also the adverse voltage quality that his …”

Section: Ieee 519 Guidelinesmentioning

confidence: 99%

Design and Application of a Second-Order High-Pass Damped Filter for 8000-hp ID Fan Drives—A Case Study

Das

2015

IEEE Trans. on Ind. Applicat.

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The design and application of second-order high-pass filters are described for 2-8000-hp ID fan drives, which reduces the voltage harmonic distortion at point of common coupling (PCC) from a high value of 42.41% to 1.32% and also brings the current distortion at PCC within IEEE 519 limits. Failure of the electronic components of the 8000-hp ID fan drives and shutdown of electronic loads downstream of the main 13.8-kV buses were observed, which led to investigation of harmonic problems and their mitigation. The second-order high-pass filters are applied for the first time in industry for such a harmonic distortion problem.Index Terms-Damped filters, harmonic load flow, harmonic mitigation and passive filter designs, high-pass filters.

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Interactions between the AC voltages and DC current in weak AC/DC interconnections

Cited by 13 publications

References 17 publications

Power system security enhancement by HVDC links using a closed-loop emergency control

Power system security enhancement by HVDC links using a closed-loop emergency control

Estimation of multi-infeed HVDC inter converter direct current interaction in close electric proximity

Design and Application of a Second-Order High-Pass Damped Filter for 8000-hp ID Fan Drives—A Case Study

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