A Test System for Hidden Failure Based on Hybrid State Estimation

DOI

10.2991/icmii-15.2015.168How to use a DOI?

Keywords

power system management; hidden failure; state estimation; static condition; WAMS

Abstract

Hidden failures in relay may cause invalidation of protection equipment so that system faults cannot be detected. These faults will lead to cascading outages in severe cases. At present, effective methods lack in monitoring hidden failures. A hybrid state estimation which uses system data collected from both SCADA and WAMS is proposed. The state value obtained from state estimation is regarded as reference value. The measurement value uploaded by protection information system is compared with reference value. If the difference exceeds default threshold value, hidden failure can be proved to exist in relay. A test system for hidden failure is established according to analysis above. This system can be used on the long-term, real-term, and on-line monitoring of relay. Example demonstrates that this system can be used to check the hidden failure in relay effectively.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhongqing Li
AU  - Yuan Tian
AU  - Chen Liang
AU  - Yan Hu
AU  - Xiang Gao
PY  - 2015/10
DA  - 2015/10
TI  - A Test System for Hidden Failure Based on Hybrid State Estimation
BT  - Proceedings of the 3rd International Conference on Mechatronics and Industrial Informatics
PB  - Atlantis Press
SP  - 953
EP  - 966
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmii-15.2015.168
DO  - 10.2991/icmii-15.2015.168
ID  - Li2015/10
ER  -