A Reliability-Exploitation Analysis of a Static Converter Taking Into Account Electromagnetic Interference

Paś, Jacek; Rosiński, Adam; Białek, Kamil

doi:10.2478/ttj-2021-0017

Cited by 10 publications

(5 citation statements)

References 40 publications

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“…The presence of these unfavorable phenomena within the operation process should already be taken into account at the ESS design stage. According to the article's authors and available source literature studies, there are no standards and legal requirements in this regard [60][61][62][63]. Proceeding with the design process requires prior testing of the electroclimate, including vibrations and noise [64][65][66][67].…”

Section: Overview Of Issues Related To Processes Associated With the ...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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Section: Overview Of Issues Related To Processes Associated With the ...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

View full text Add to dashboard Cite

show abstract

“…There are additional filters inside the power supply, which eliminate interference occurring within a power mains-e.g., harmonics [94,99,100]. In addition, a power supply is equipped with overvoltage systems and filters reducing interference associated with ensuring FAS electromagnetic compatibility [96,101,102]. Unfitness or lack of main power supply is reported to an alarm-receiving-centre or service groups as a fail-safe (at that time, the system switches to backup power, e.g., from a battery bank) [96,[103][104][105].…”

Section: Energy Balance Determination Process Graph For Fas Operated ...mentioning

confidence: 99%

Selected Issues Associated with the Operational and Power Supply Reliability of Fire Alarm Systems

et al. 2022

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The article reviews issues associated with the use of electronic fire alarm systems (FAS). They are operated in various environments and buildings with varying volumes. FAS have to function properly under different operating conditions associated with their operation, as well as power supply and information inflow. Due to their functions, i.e., ensuring the safety of people, vehicles, logistics bases, airports, etc., FAS have to exhibit an appropriately organized reliability structure associated with their implementation and power supply. Operational studies involving FAS operated in various facilities were conducted to this end. The authors determined damage and recovery time intensities. FAS reliability indicators were also determined. The article presents graphs associated with developing the energy balance for selected FAS. The graphs are consistent with the latest and applicable legal regulations. The next stage of the work related to this article was developing an FAS operation process model and conducting computer simulations in order to determine reliability indicators. Such an approach to the FAS operation process enables a rational selection of technical and organizational solutions aimed at guaranteeing reliability in the course of executing operational tasks associated with ensuring fire safety. FAS operational analysis, developing balance graphs and models, as well as the computer simulation, enabled inferring conclusions that might be useful to the process of engineering and operating such systems.

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“…Paper [16] presents issues related to the impact of electromagnetic interference on track-side cabinets of closed-circuit television system operating in the railroad transport environment. The paper develops an operational model including electromagnetic interference.…”

Section: Introduction and Analysis Of The Issuementioning

confidence: 99%

Analysis and Assessment of Railway CCTV System Operating Reliability

et al. 2022

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The article reviews the history and the direction of development for railway CCTV (Closed-Circuit TeleVision) systems. The authors described the CCTV system at PKP Polskie Linie Kolejowe S.A. and the associated network and server infrastructure. The authors proposed an operational model for a centralized CCTV system that assumes states of partial fitness, in accordance with the regulations of the national railway infrastructure administrator. The aim of the paper is to review, analyse, and evaluate the operational reliability of railroad video monitoring systems in relation to the assumptions of the national railroad infrastructure manager using an operational model. A unified system structure is presented in the article. The model was used as a base to calculate the probabilities for the system while staying in the assumed states. Calculations showed that a centralized CCTV system is characterized by high reliability and satisfies the expectations of PKP Polskie Linie Kolejowe S.A. in this respect. The obtained result of 99.88% probability of leaving the analysed video surveillance system in a fully operational condition within a year indicates a high level of security of the applied solutions in such a large system. The analysed system is one of the largest such solutions designed in the European Union and the largest in Poland, which is an important contribution to the development and implementation of such extensive video surveillance systems in the future. The research question is whether the extensive centralized railway CCTV systems will meet the requirements of PKP Polskie Linie Kolejowe S.A.

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A Reliability-Exploitation Analysis of a Static Converter Taking Into Account Electromagnetic Interference

Cited by 10 publications

References 40 publications

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

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

Selected Issues Associated with the Operational and Power Supply Reliability of Fire Alarm Systems

Analysis and Assessment of Railway CCTV System Operating Reliability

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