Multi-state IEC-61850 Substation Communication Network based on Markov partitions and symbolic dynamics

Mathebula, Vonani Clive; Saha, Akshay Kumar

doi:10.1016/j.segan.2021.100466

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…In [23], the authors integrated the quality of repairs in a 'one-out-of-two' reliability model using the Markov process. The impact of the quality of repairs on the reliability performance of SCN architecture based on IEC 61850 is discussed in [37], [38]. Other studies are presented in [39], [40] focusing on the SCN architecture's responsiveness to incremental changes in the quality of repairs.…”

Section: A Critical Review Of Iec 61850 Scn Architecture Reliability Studiesmentioning

confidence: 99%

“…Other studies are presented in [39], [40] focusing on the SCN architecture's responsiveness to incremental changes in the quality of repairs. Nevertheless, the authors in [37]- [40] do not address the impact of CCF coupled with the quality of repairs on the SCN architecture. In this paper, the impact of quality of repairs coupled with CCFs on the SCN architectures is modelled using the Markov process and LDS.…”

Section: A Critical Review Of Iec 61850 Scn Architecture Reliability Studiesmentioning

confidence: 99%

“…The Markov process reliability model of the RBD of Figure 2 is depicted in Figure 4 using the subsystem's transfer rates concept between any two connected system states [47], where , , µ and  are the diagnostic coverage, repair efficiency, repair rate and failure rate [23], [37]. To account for imperfect repairs due to the diagnostic capability factor and repair efficiency within the subsystems, two factors (viz.…”

Section: Markov Process Reliability Modelmentioning

confidence: 99%

“…States S-2 to S-9 represent partial systems availability, whereas state S-10 represents a complete scheme failure. Therefore, the sum of states S-1 to S-9 probabilities represents the system's availability [37]. The beta factor model is used in this paper due to its simplicity to comprehend and apply to incorporate the CCF impact in the reliability model of Figure 4 [4], [5], [9].…”

Section: Markov Process Reliability Modelmentioning

confidence: 99%

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Impact of Quality of Repairs and Common Cause Failures on the Reliability Performance of Intra-Bay IEC 61850 Substation Communication Network Architecture Based on Markov and Linear Dynamical Systems

Mathebula

Saha

2021

IEEE Access

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Modernisation of substations using digital-based Substation Communication Networks (SCN) enables the automation of substations, allowing effective and efficient monitoring of substation equipment and implementing complex control and protection schemes. The IEC 61850 standard for SCN's objective is to integrate substation devices from different vendors, enabling peer-to-peer communication between the devices. The reliability investigation of the IEC 61850 based SCN architecture continues since it is left to the system designer to determine based on the network's applications and functions. In all endeavours to designing highly available SCN architectures, redundant systems are employed in mission-critical applications. In this paper, the impact of Common Cause Failures (CCF) and the quality of repairs on the reliability performance of IEC 61850 based architecture are investigated using the Markov process and Linear Dynamical Systems, where the diagnostic coverage level of the system is based on the ISO 13849-1. The results of the case studies indicate that common engineering design and coupling factors have a negative impact on the system reliability performance, notably for systems with high diagnostic coverage. The results also indicate that the factors have less impact when the system diagnostic coverage is low, specifically at low repair efficiency levels. However, the impact becomes more pronounced as the repair efficiency increases, as observed from the responses of the transition probability matrix's eigenvalue magnitudes. Thus, it is critical to ensure the minimum impact of common engineering design and coupling factors by diversifying the system's subsystems to ensure a high independence level.

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Section: A Critical Review Of Iec 61850 Scn Architecture Reliability Studiesmentioning

confidence: 99%

Section: A Critical Review Of Iec 61850 Scn Architecture Reliability Studiesmentioning

confidence: 99%

Section: Markov Process Reliability Modelmentioning

confidence: 99%

Section: Markov Process Reliability Modelmentioning

confidence: 99%

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Impact of Quality of Repairs and Common Cause Failures on the Reliability Performance of Intra-Bay IEC 61850 Substation Communication Network Architecture Based on Markov and Linear Dynamical Systems

Mathebula

Saha

2021

IEEE Access

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“…This concept provides for a number of programs to modernize individual areas of the electrical network and create a distributed automation system. The distributed automation system should provide for the individually-centrolyzed principle of building the control of the primary equipment of the power center [1]. At the same time, it is envisaged to create dispatching points (DP) as an automation object, operational control and maintenance through the existing operational dispatch groups (ODG).…”

Section: Introductionmentioning

confidence: 99%

Determining the mode of operation of the system section, taking into account the current topology and predictive analysis of the active-adaptive network of 6-10 kV

Yurov

Voronov²,

Lukonin³

2021

E3S Web Conf.

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Technical solutions aimed at improving the reliability of power supply to consumers of the 6-10 kV network are proposed, a block diagram of a fundamentally new device for diagnosing and protecting cells of 6-10 kV power cable lines with a single algorithm of operation is shown, which allows simultaneously performing current protection of the controlled feeder and monitoring with a predictive assessment (residual resource) of the state of the cable insulation material. A possible scheme of interaction of elements of an active-adaptive power unit of 6-10 kV is shown on the example of a cell of a 6-10 kV cable line. he device will allow you to control leakage currents in distribution networks, taking into account the remaining cable life, reduce insulation losses during power transmission and increase the energy efficiency of the controlled network by reducing power interruptions to the consumer. The quantitative values of the device will be determined after its introduction into trial operation.

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Markov and semi-Markov models in system reliability

Farahani

Shoja

Tohidi

2023

Engineering Reliability and Risk Assessment

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Multi-state IEC-61850 Substation Communication Network based on Markov partitions and symbolic dynamics

Cited by 6 publications

References 28 publications

Impact of Quality of Repairs and Common Cause Failures on the Reliability Performance of Intra-Bay IEC 61850 Substation Communication Network Architecture Based on Markov and Linear Dynamical Systems

Impact of Quality of Repairs and Common Cause Failures on the Reliability Performance of Intra-Bay IEC 61850 Substation Communication Network Architecture Based on Markov and Linear Dynamical Systems

Determining the mode of operation of the system section, taking into account the current topology and predictive analysis of the active-adaptive network of 6-10 kV

Markov and semi-Markov models in system reliability

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