Authors:
Piao Peng
1
;
Zhiwei Liao
1
;
Fushuan Wen
2
and
Jiansheng Huang
3
Affiliations:
1
School of Electrical Engineering and South China University of Technology, China
;
2
School of Electrical Engineering and Zhejiang University, China
;
3
School of Computing and Mathematics and University of Western Sydney, Australia
Keyword(s):
Digital substation, Fault diagnosis, Root cause analysis, Dempster/shafer theory, Fishbone diagram.
Related
Ontology
Subjects/Areas/Topics:
Artificial Intelligence
;
Biomedical Engineering
;
Biomedical Signal Processing
;
Computational Intelligence
;
Computer-Supported Education
;
Domain Applications and Case Studies
;
Fuzzy Systems
;
Health Engineering and Technology Applications
;
Human-Computer Interaction
;
Industrial, Financial and Medical Applications
;
Methodologies and Methods
;
Neural Networks
;
Neurocomputing
;
Neurotechnology, Electronics and Informatics
;
Pattern Recognition
;
Physiological Computing Systems
;
Sensor Networks
;
Signal Processing
;
Soft Computing
;
System Identification and Fault Detection
;
Theory and Methods
Abstract:
The authors present a Cause-Effect fault diagnosis model, which utilises the Root Cause Analysis approach and takes into account the technical features of a digital substation. The Dempster/Shafer evidence theory is used to integrate different types of fault information in the diagnosis model so as to implement a hierarchical, systematic and comprehensive diagnosis based on the logic relationship between the parent and child nodes such as transformer/circuit-breaker/transmission-line, and between the root and child causes. A real fault scenario is investigated in the case study to demonstrate the developed approach in diagnosing malfunction of protective relays and/or circuit breakers, miss or false alarms, and other commonly encountered faults at a modern digital substation.