Effect of HVDC component enhancement on the overall system reliability performance

Kuruganty, Sastry

doi:10.1109/61.277705

Cited by 23 publications

(4 citation statements)

References 2 publications

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“…This method uses the event tree and minimal cut-set approach to describe the system operational behavior and failure modes. References [32] and [33] develop the reliability block diagrams of HVDC transmission systems with the consideration of the effects of different components on the overall reliability of HVDC systems. However, only point-to-point HVDC links are studied in these published literatures.…”

Section: Introductionmentioning

confidence: 99%

Feasibility and Reliability Analysis of LCC DC Grids and LCC/VSC Hybrid DC Grids

Liang

Joseph

et al. 2019

IEEE Access

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Power system interconnections using high-voltage direct-current (HVDC) technologies between different areas can be an effective solution to enhance system efficiency and reliability. Particularly, the multi-terminal dc grids that could balance and ensure resource adequacy increase asset utilization and reduce costs. In this paper, the technical feasibility of building dc grids using the line-commutated converterbased (LCC) and voltage source converter-based (VSC) HVDC technologies is discussed. Apart from presenting the technical challenges of building LCC dc grids and LCC/VSC hybrid dc grids, the reliability modeling and analysis of these DC grids are also presented. First, the detailed reliability model of the modular multi-level converters (MMCs) with series-connected high-voltage and low-voltage bridges is developed. The active mode of redundancy design is considered for the reliability model. To this end, a comprehensive whole system reliability model of the studied systems is developed. The reliability model of each subsystem is modeled in detail. Various reliability indices are calculated using this whole system reliability model. The impacts of the redundancy design of the MMCs on these indices are presented. The studies of this paper provide useful guidance for dc grid design and reliability analysis. INDEX TERMS LCC-HVDC, VSC-HVDC, MMC, multi-terminal dc grid, reliability analysis, k-out-of-n.

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Section: Introductionmentioning

confidence: 99%

Feasibility and Reliability Analysis of LCC DC Grids and LCC/VSC Hybrid DC Grids

Liang

Joseph

et al. 2019

IEEE Access

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“…In the past, considerable work has been done in reliability evaluation of HVDC transmissions. Based on the technique of failure modes and effects, Kuruganty [5] proposed a reliability evaluation model of HVDC transmission by using a frequency and duration approach.…”

Section: Introductionmentioning

confidence: 99%

Study on Seismic Reliability of UHVDC Transmission Systems

Yao

Jia

2019

Shock and Vibration

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Electric power system is critical to maintain the welfare of the general public with impact on economic losses and other cascading. In this paper, the seismic reliability of the ultra-high-voltage direct current (UHVDC) transmission system was evaluated from a perspective of the subsystem fault logic. An assessment model of system seismic reliability was proposed based on the state enumeration method. A case study was presented by taking a typical 800 kV UHVDC transmission system as the example. The finite element models of major components in the UHVDC transmission system were established to evaluate their seismic reliability. The results reveal that though the seismic reliability of major components seems satisfactory overall, the UHVDC transmission system may still suffer from seismic hazards to a certain degree due to the complexity of the full system. This calls for a further enhancement in seismic design requirements of the electrical equipment.

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“…This completely depends on the failure rate and mean time to repair of the equipment associated with such dc systems. In [4], the effects of different components on the overall reliability of HVDC systems are investigated. However, the effects of generation, DCTLs, and load level on system reliability are not covered by [4].…”

Section: Introductionmentioning

confidence: 99%

“…In [4], the effects of different components on the overall reliability of HVDC systems are investigated. However, the effects of generation, DCTLs, and load level on system reliability are not covered by [4]. An energy-based approach is presented in [5] to evaluate the performance of HVDC transmission systems.…”

Section: Introductionmentioning

confidence: 99%

Reliability Evaluation of an HVDC Transmission System Tapped by a VSC Station

Zadkhast

Fotuhi‐Firuzabad

Aminifar

et al. 2010

IEEE Trans. Power Delivery

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Reliability evaluation of multiterminal HVDC systems has received very little attention in the past. This paper presents reliability modeling and analysis of an HVDC transmission system incorporating a voltage-sourced converter (VSC) tapping station. The use of VSC tapping stations enables the supply of power along the route to areas with comparatively little consumption. In this paper, a comprehensive detailed reliability model is developed and then converted to a manageable and computationally efficient model. Using this equivalent reliability model, various reliability indices are calculated at the load point of the system and the impacts of the VSC tapping station on these indices are illustrated. Sensitivity analyses are conducted to investigate the impacts of the load level and the location of the tapping station on the reliability indices. The conducted studies are numerically applied on a typical HVDC system and thorough discussions are presented.

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Effect of HVDC component enhancement on the overall system reliability performance

Cited by 23 publications

References 2 publications

Feasibility and Reliability Analysis of LCC DC Grids and LCC/VSC Hybrid DC Grids

Feasibility and Reliability Analysis of LCC DC Grids and LCC/VSC Hybrid DC Grids

Study on Seismic Reliability of UHVDC Transmission Systems

Reliability Evaluation of an HVDC Transmission System Tapped by a VSC Station

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