The impact of selected variants of remote control on power supply reliability indexes of distribution networks

Kozyra, Jacek; Łukasik, Z.; Kuśmińska-Fijałkowska, A.; Kaszuba, Paweł

doi:10.1007/s00202-021-01383-6

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…An essential part of this study is the reliability and exploitation calculations of power grids. Similar issues are also presented in the article [34]. However, the authors focused here on the analysis of the lack of power supply continuity in the example of four variants of remote control on the sequence of a medium-voltage cable line.…”

Section: State-of-the-artmentioning

confidence: 89%

The Reliability and Exploitation Analysis Method of the ICT System Power Supply with the Use of Modelling Based on Rough Sets

et al. 2023

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The article describes a new approach to the reliability–exploitation analysis of the critical information and communications technology (ICT) system power supply. A classic approach based on statistical indicators and a new one founded on uncertainty modelling based on the rough set method is presented. The main advantage of the uncertainty modelling approach is the simplification of the calculations and the fact that, unlike statistical analysis, uncertainty modelling does not require complete information on the used data sets. An extensive study of world publications was carried out, proving that this is an entirely innovative approach to solving the problem of reliability and exploitation analysis. Calculations, analyses and syntheses are also exhibited in a specific example. A sample of the ICT system power supply was simulated, and the simulation results are shown. The simulations were prepared by one of the co-authors for the purposes of this article.

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Section: State-of-the-artmentioning

confidence: 89%

The Reliability and Exploitation Analysis Method of the ICT System Power Supply with the Use of Modelling Based on Rough Sets

et al. 2023

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“…What is more, the FAS has been fitted with a DTAIDS transceiver, which receives technical state signals from the GES. An additional DTAIDS is organized for the purposes of the FAS alone [40,120,121]. After the alarm is acknowledged by the local operators in the building, the alarm signal is sent from this transmitter to the SFB.…”

Section: The Application Of Fire Alarm and Gas Extinguishing Systems ...mentioning

confidence: 99%

The Dynamic Change in the Reliability Function Level in a Selected Fire Alarm System during a Fire

Paś,

Klimczak,

Rosiński

et al. 2024

Sensors

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This article discusses fundamental issues associated with the functional reliability of selected fire alarm systems (FASs) in operation during building fires. FASs operate under diverse external or internal natural environmental conditions, and the operational process of FAS should take into account the impacts of physical phenomena that occur during fires. Their operation is associated with the constant provision of reliability. FAS designers should also consider the system’s reliability when developing fire control matrices, tables, algorithms, or scenarios. All functions arising from an FAS control matrix should be implemented with a permissible reliability level, RDPN(t), prior to, as well as during, a fire. This should be assigned to the controls saved in the fire alarm control unit (FCP). This article presents the process by which high temperatures generated during a fire impact the reliability of FAS functioning. It was developed considering selected critical paths for a specific scenario and the control matrix for an FAS. Such assumptions make it possible to determine the impact of various temperatures generated during a fire on the reliability of an FAS. To this end, the authors reviewed that the waveform of the R(t) function changes for a given FAS over time, Δt, and then determined the fitness paths. The critical paths are located within the fire detection and suppression activation process, using FAS or fixed extinguishing devices (FEDs), and the paths were modeled with acceptable and unacceptable technical states. The last section of this article defines a model and graph for the operational process of a selected FAS, the analysis of which enables conclusions to be drawn that can be employed in the design and implementation stages.

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“…The literature [32][33][34][35][36] finds that, in a technical system, the failure of one subsystem in the system can cause the malfunction of the entire complex technical facility or part of the system. For this reason, complex technical objects and information systems are powered from two independent sources.…”

Section: Introductionmentioning

confidence: 99%

Research on and Assessment of the Reliability of Railway Transport Systems with Induction Motors

Gubarevych,

Duer,

Melkonova

et al. 2023

Energies

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Increasing the efficiency and reliability of modern railway transport is accompanied by an increase in monitoring and diagnostic systems for the current state of electric drives. Modern railway transport contains a large number of induction motors to ensure the operation of the drives of various mechanisms. In the article, based on the operational statistics of engine failures and the proposed scheme for diagnosing them, studies were carried out and a model was developed for assessing the reliability of a transport system equipped with an on-board diagnostic system for the current state. When building the models, the Markov method was used, including the construction of graphs for the five most relevant states of the induction electric motor during operation. The results obtained are relevant for evaluating the effectiveness of using the built-in diagnostic system and scheduling routine maintenance, which will affect the efficiency of railway transport. Based on the process of the diagnosis of railway transport systems with induction motors, five operating states of the object studied were interpreted: the state of full operation, state “S0”; the state of incomplete serviceability, state “S1”; critical serviceability, state “S2”; the state of the pre-damage condition, state “S3”; the state of unserviceability (defect), state “S4”. Subsequently, a five-state model of the operation process of railway transport systems with induction motors was developed. This model is also described by equations of state: Kolmogorov–Chapman equations. The reliability quantities determined form the basis for simulation reliability studies. The effect of the simulation study is the reliability quantities determined in the form of reliability functions and probabilities of the occurrences of the operating states of railway transport systems with induction motors; an important part of the reliability study of the system examined is to estimate the times of the occurrences in the object studied of the operating states in the future.

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The impact of selected variants of remote control on power supply reliability indexes of distribution networks

Cited by 5 publications

References 18 publications

The Reliability and Exploitation Analysis Method of the ICT System Power Supply with the Use of Modelling Based on Rough Sets

The Reliability and Exploitation Analysis Method of the ICT System Power Supply with the Use of Modelling Based on Rough Sets

The Dynamic Change in the Reliability Function Level in a Selected Fire Alarm System during a Fire

Research on and Assessment of the Reliability of Railway Transport Systems with Induction Motors

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