Overall availability assessment of HVDC VSC XLPE cable symmetrical monopolar configuration

Benato, Roberto; Chiarelli, A.; Sessa, Sebastian Dambone; Napolitano, D.

doi:10.23919/aeit.2017.8240500

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…The two‐state model applies also for modelling each pole of a HVDC link. References [2, 10, 14, 15, 17] present data and models for the characterisation of the failure rate and MTTR for overhead HVDC line and for undersea/underground HVDC cable. The computation of failure rate of a HVDC pole and its MTTR must take into account failures along the line, DC protections, DC filters, and all component required for its operation.…”

Section: Hvdc Grid Modelling For Availability Assessmentmentioning

confidence: 99%

Availability assessment of voltage source converter HVDC grids using optimal power flow‐based remedial actions

2020

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This study proposes a methodology for assessing the availability of voltage source converter high‐voltage direct current (HVDC) grids based on the enumeration methodology of contingency analysis with N − 2 criteria and makes contributions in the computation of remedial actions and the definition and computation of reliability indices applied for HVDC grids. Thus, this study proposes the computation of remedial actions based on an optimal power flow, looking to maintain power exchanges between HVDC and high‐voltage alternating current grids, when a contingency occurs on the HVDC grid and converter stations or HVDC lines are out of their operating limits. On the other hand, an HVDC grid has the function of injecting and extracting power from AC interconnected zones, and then traditionally used nodal reliability indices must be modified to indices that reflect the performance of the HVDC network to fulfil its function of interconnection of systems. This study defines two sets of availability indices applicable to HVDC grids: (i) loss of power and energy extracted from the DC grid to the AC zones and (ii) loss of power and energy injected to AC zones from the DC grid. The proposed methodology is applied to perform the availability assessment of the CIGRE B4 DC grid test system and the results are presented.

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Section: Hvdc Grid Modelling For Availability Assessmentmentioning

confidence: 99%

Availability assessment of voltage source converter HVDC grids using optimal power flow‐based remedial actions

2020

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“…The possibility of taking into account the component spares of a HVDC link in the computation of A S can be very useful in order to optimize the spare management. This target can be achieved by exploiting the Markov state space diagrams [11][12][13]. By considering a single component of a HVDC point-to-point system, it is possible to analytically represent, in matrix form, the transitions of the component from one particular state to the other, with any spare management configuration.…”

Section: Markov State Space Diagramsmentioning

confidence: 99%

Availability Analysis of HVDC-VSC Systems: A Review

2019

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This work stems from the worldwide increasing need to precisely consider, in the design phase of an HVDC project, the availability of the HVDC system. In this paper, an overview of the availability assessment methods for HVDC-VSC transmission systems is presented. In particular, the state of the art of the procedures to estimate the availability of both the HVDC link reparable components and the conversion system on the basis of the converter configuration is given. The theoretical fundamentals of each method, together with their practical applications, have been described, in order to highlight the limits and the potentialities of each approach. The authors aim at giving a guide to choosing the best computation approach on the basis of the specific needs of the users and at summarizing all the key aspects which can be taken into account during the availability assessment of HVDC-VSC links.

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“…The use of overhead lines or submarine/underground cables, or a combination of them, generates different issues and have pros and cons depending on the type of application [16][17][18]. Effective reliability and availability assessment tools [19][20][21][22][23][24][25][26][27][28][29][30] are of paramount importance in order to safely manage a whole HVDC-VSC link and to minimize the system outage risk.…”

Section: Introductionmentioning

confidence: 99%

Reliability Assessment of a Multi-State HVDC System by Combining Markov and Matrix-Based Methods

2021

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The purpose of this paper is to highlight that, in order to assess the availability of different HVDC cable transmission systems, a more detailed characterization of the cable management significantly affects the availability estimation since the cable represents one of the most critical elements of such systems. The analyzed case study consists of a multi-terminal direct current system based on both line commutated converter and voltage source converter technologies in different configurations, whose availability is computed for different transmitted power capacities. For these analyses, the matrix-based reliability estimation method is exploited together with the Monte Carlo approach and the Markov state space one. This paper shows how reliability analysis requires a deep knowledge of the real installation conditions. The impact of these conditions on the reliability evaluation and the involved benefits are also presented.

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Overall availability assessment of HVDC VSC XLPE cable symmetrical monopolar configuration

Cited by 8 publications

References 9 publications

Availability assessment of voltage source converter HVDC grids using optimal power flow‐based remedial actions

Availability assessment of voltage source converter HVDC grids using optimal power flow‐based remedial actions

Availability Analysis of HVDC-VSC Systems: A Review

Reliability Assessment of a Multi-State HVDC System by Combining Markov and Matrix-Based Methods

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