Sensitivity models for steady-state and dynamic state probabilities and its application to protection system reliability evaluation

2013 ◽  
Author(s):  
Shenghu Li
Keyword(s):  
Steady State ◽  
System Reliability ◽  
Reliability Evaluation ◽  
Protection System ◽  
Dynamic State ◽  
Protection System Reliability

Reliability Evaluation for Distribution System Including Protection System Failures

2014 ◽  
Vol 989-994 ◽  
pp. 1181-1184
Author(s):  
Zhan Long Zhang ◽  
Li Yao ◽  
Qun Wang
Keyword(s):  
Markov Model ◽  
System Reliability ◽  
Distribution System ◽  
Reliability Evaluation ◽  
Protection System ◽  
Test Results ◽  
Reliability Modeling ◽  
System Failures ◽  
Load Point ◽  
Distribution System Reliability

A new model and method for incorporating the effect of protection system failures into distribution system reliability evaluation are developed this paper. Firstly, the distribution system is partitioned into zones with the auto (or non-auto) switch being the boundary; through the network equivalent approach, for each load point, three component groups are respectively formed by two types of zone-elements. Then two types of protection failures and their impacts on reliability modeling are discussed. Finally, the reliability Markov model of load point with protection failures has been developed. The test results of the samples demonstrate the practicability and validness of the method.

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