A design and application of electric power system time synchronism system based on multi-sources timing

2011 ◽  
Author(s):  
Bao-luo Xu ◽  
Dao-nong Zhang ◽  
Wen-guang Yuan ◽  
Zhi-gang Deng ◽  
Tong-jun Liu ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
System Time ◽  
Design And Application

scholarly journals Reliability Evaluation for Aviation Electric Power System in Consideration of Uncertainty

Energies ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1175
Author(s):  
Yao Wang ◽  
Xinqin Gao ◽  
Yuanfeng Cai ◽  
Mingshun Yang ◽  
Shujuan Li ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
System Reliability ◽  
Probability Distributions ◽  
Rapid Development ◽  
Reliability Evaluation ◽  
Electric Power System ◽  
Traditional System ◽  
Electric Aircraft ◽  
System Time

With the rapid development of more electric aircraft (MEA) in recent years, the aviation electric power system (AEPS) has played an increasingly important role in safe flight. However, as a highly reliable system, because of its complicated flight conditions and architecture, it often proves significant uncertainty in its failure occurrence and consequence. Thus, more and more stakeholders, e.g., passengers, aviation administration departments, are dissatisfied with the traditional system reliability analysis, in which failure uncertainty is not considered and system reliability probability is a constant value at a given time. To overcome this disadvantage, we propose a new methodology in the AEPS reliability evaluation. First, we perform a random sampling from the probability distributions of components’ failure rates and compute the system reliability at each sample point; after that, we use variance, confidence interval, and probability density function to quantify the uncertainty of system reliability. Finally, we perform the new method on a series–parallel system and an AEPS. The results show that the power supply reliability of AEPS is uncertain and the uncertainty varies with system time even though the uncertainty of each component’s failure is quite small; therefore it is necessary to quantify system uncertainty for safer flight, and our proposed method could be an effective way to accomplish this quantization task.

scholarly journals A NEW APPROACH FOR DETERMINING THE SYSTEM TIME WITHOUT FAILURES USING PETRI NETS

2015 ◽  
Vol 5 (2) ◽  
Author(s):  
Bojana Zlatkovic ◽  
Biljana Samardzic
Keyword(s):  
Power System ◽  
Petri Nets ◽  
Key Words ◽  
Electric Power ◽  
Reliability Analysis ◽  
Fault Tree ◽  
Electric Power System ◽  
New Method ◽  
New Approach ◽  
System Time

A new method for determining the time without failures using Petri nets will be presented in this paper. Petri nets are very appropriate for modelling and analysis of different systems. Due to its simplicity, this method can be applicable in practice, for example, for reliability analysis and for the time without failures calculation. The results are illustrated using the example of electric power system. Key words: Petri nets,time without failures, fault tree

Expectation for Smart Inverter & DERMS for Electric Power System Task

2018 ◽  
Vol 138 (6) ◽  
pp. 412-415 ◽  
Author(s):  
Ryo Maeda ◽  
Takeshi Fukuoka ◽  
Yasutoshi Yoshioka ◽  
Atsushi Harada
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
System Task
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