The Reliability Evaluation of Power System Based on Uncertain Linguistic Information

2013 ◽  
Vol 709 ◽  
pp. 794-798
Author(s):  
Da Rong Gao ◽  
Yu Ru Geng
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electricity Market ◽  
System Reliability ◽  
Reliability Assessment ◽  
Reliability Evaluation ◽  
Electric Power System ◽  
Power System Reliability ◽  
Target Setting ◽  
Linguistic Information

Electric power system reliability evaluation depends on reasonable target setting and calculation. This article mainly analyses the new index of power system reliability assessment in the electricity market environment, and on the basis of this, introduces the application of uncertain linguistic information in the ceremony system reliability evaluation, representing original parameters with uncertain number, and random processing fault condition happened and transfer events and process.

scholarly journals Power System Reliability Assessment in a Complex Restructured Power System

2019 ◽  
Vol 9 (4) ◽  
pp. 2296 ◽  
Author(s):  
N.Mahiban Lindsay ◽  
A.K. Parvathy
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Market ◽  
System Reliability ◽  
Reliability Assessment ◽  
Electric Energy ◽  
Electric Power System ◽  
Power System Reliability ◽  
Bulk Power ◽  
Adequacy Assessment

The basic purpose of an electric power system is to supply its consumers with electric energy as parsimoniously as possible and with a sensible degree of continuity and quality. It is expected that the solicitation of power system reliability assessment in bulk power systems will continue to increase in the future especially in the newly deregulated power diligence. This paper presents the research conducted on the three areas of incorporating multi-state generating unit models, evaluating system performance indices and identifying transmission paucities in complex system adequacy assessment. The incentives for electricity market participants to endow in new generation and transmission facilities are highly influenced by the market risk in a complex restructured environment. This paper also presents a procedure to identify transmission deficiencies and remedial modification in the composite generation and transmission system and  focused on the application of probabilistic techniques in composite system adequacy assessment

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.

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