A Method to Establish a Trade-Space of System Requirements and Life Cycle Cost

Rahim, Nadirah Abdul; Ferris, Timothy L.J.

doi:10.1109/jsyst.2019.2923360

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…The services that the system can provide are thus represented by the quality performance measures. These measures can be used to distinguish realistic performance requirements [11].…”

Section: Parallel Structures Of the Earth Station Systemmentioning

confidence: 99%

Sustainable framework for a geostationary satellite control earth station system using parallel configuration

Rahman

Rahim

2023

IJEECS

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Earth station system plays an important role to ensure that a satellite communication system runs efficiently. Redundancies of the subsystems and regular maintenance planning can improve the earth station system. Organising system affordability can be challenging as more redundancies would acquire more maintenance. Thus, a sustainable framework that considers an earth station system's reliability, cost, and maintainability was modelled. 2-parallel, 3-parallel, and 4-parallel earth station system configurations were studied with five mean time between failures (MTBF). The results showed that an earth station that was configured with 2-parallel configuration provided an optimum reliability system performance though both 3-parallel and 4-parallel configuration provided higher reliability. Moreover, the 2-parallel configuration was also cheaper in terms of operational cost if compared to the 3-parallel and the 4-parallel configurations. Hence, this sustainable framework comprising the reliability and operational cost elements were modelled based on the 2-parallel configuration with the proposed maintenance activities. Moreover, the computed root mean square (RMS) values for both new reliability and new operational cost models yielded smallest values of 20.84% and 22.82% respectively. Thus, these RMS values for both reliability and operational cost models based on 2-parallel configuration are suitable to be applied in the earth station system design.

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“…The services that the system can provide are thus represented by the quality performance measures. These measures can be used to distinguish realistic performance requirements [11].…”

Section: Parallel Structures Of the Earth Station Systemmentioning

confidence: 99%

Sustainable framework for a geostationary satellite control earth station system using parallel configuration

Rahman

Rahim

2023

IJEECS

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Pareto Optimal Allocation of Flexible Fault Current Limiter Based on Multi-Objective Improved Bat Algorithm

et al. 2021

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With the sustainable growth in the integration of distributed generation units in the distribution network, the probability of the fault current level exceeding the rating of existing components increases. Cascaded H bridge fault current limiter is widely used in the power grid due to its advantage in inhibiting surge current flexibly. In order to equilibrate the objective functions of its cost, fault current mitigation effect, and the weighted load reliability index, a novel methodology is proposed to simultaneously optimize the location and size of the limiters in the distribution network. Therein, the sensitivity factor considering the Monte Carlo fault simulation model is introduced to reduce the search space and rank candidate locations referencing the actual conditions. And then, according to the candidate locations and considering different conflicting objective functions, a multi-objective improved bat algorithm is employed to obtain the Pareto optimal solution set. Also, life cycle cost and net present value are introduced to construct an economic model to access the scheme costs and service life. The proposed approach is verified using the modified IEEE 33bus distribution systems with DGs and IEEE 30-bus Benchmark system. The results demonstrate that the proposed method exhibits higher efficiency in finding optimum solutions and provides a new economic configuration idea for the practical engineering application.

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Performance Comparison of Data Preprocessing Methods for Trade-Space Exploration with AI Model: Case Study of Satellite Anomalies Detection

Mutholib,

Rahim,

Gunawan

et al. 2024

2024 IEEE 10th International Conference on Smart Instrumentation, Measurement and Applications (ICSIMA)

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A Method to Establish a Trade-Space of System Requirements and Life Cycle Cost

Cited by 4 publications

References 11 publications

Sustainable framework for a geostationary satellite control earth station system using parallel configuration

Sustainable framework for a geostationary satellite control earth station system using parallel configuration

Pareto Optimal Allocation of Flexible Fault Current Limiter Based on Multi-Objective Improved Bat Algorithm

Performance Comparison of Data Preprocessing Methods for Trade-Space Exploration with AI Model: Case Study of Satellite Anomalies Detection

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