Modeling and Analysis of Incorrect Actions of Relay Protection Systems Based on Fault Trees

The safety of the power grid is threatened by incorrect action (IA) of relay protection system (RPS) resulting from defects, and even worsen a blackout. Currently, a large amount of data about IAs and defects in RPS are accumulated in operation. However, the relationship between the IAs and device defects is unclear. Recognizing the above problems, based on the 10-year field data, this paper proposes fault tree analysis for the IAs of RPS to discover relationship between the IAs and device defects. In detail, based on analysis of the field data, the defect sets which is related to IAs are built, after that, the method to construction of two fault trees for the incorrect actions, which taking the incorrect actions as the top event, and the defect locations and component factors as the bottom level respectively, is proposed. Furthermore, combined with the 10-year filed data, the different fault trees are established and presented, and the related analysis for different responsible entities is discussed, which show the feasibility and effectiveness of proposed method.

[1]  ShaoFeng Huang,et al.  Relay replacement strategy based on the least unit life cycle cost with minimum maintenance model , 2011, 2011 International Conference on Advanced Power System Automation and Protection.

[2]  Gui Cun-bing.  Integrative and Quantitative Calculation of Reliability for Relay Protection System , 2007 .

[3]  R. Billinton,et al.  Determination of the Optimum Routine Test and Self-Checking Intervals in Protective Relaying Using a Reliability Model , 2002, IEEE Power Engineering Review.

[4]  Tianshu Bi,et al.  Researches on the time-varying failure rate characteristic for the HVDC protection devices in China Southern Power Grid , 2011, 2011 International Conference on Advanced Power System Automation and Protection.

[5]  Wei Tian,et al.  Risk Assessment in Extreme Events Considering the Reliability of Protection Systems , 2015, IEEE Transactions on Smart Grid.

[6]  P. M. Anderson,et al.  An improved reliability model for redundant protective systems-Markov models , 1997 .

[7]  Huang Shaofeng.  Time-varying Failure Rate Estimation of Relay Protection Devices and Their Regional Differences Analysis , 2012 .

[8]  Zengping Wang,et al.  Protection Dynamic Reliability Analysis System Based on 3RF Technique , 2011, IEEE Transactions on Power Systems.

[9]  Li Yong,et al.  STUDY OF RELIABILITY AND OPTIMAL ROUTINE TEST INTERVAL OF PROTECTIVE RELAYS , 2001 .

[10]  Hao Xu,et al.  Dynamic reliability quantitative assessment of the relay protection system , 2016, 2016 IEEE International Conference on Power and Renewable Energy (ICPRE).

[11]  R. Beresh,et al.  Basic Fault Tree Analysis for use in protection reliability , 2007, 2007 Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources.

[12]  Jan Magott,et al.  Time Coordination of Distance Protections Using Probabilistic Fault Trees With Time Dependencies , 2010, IEEE Transactions on Power Delivery.

[13]  Huang Shaofeng.  Estimation Methods for Constant Failure Rate of Protection Equipments , 2012 .

[14]  Mikołaj Bartłomiejczyk,et al.  Verification of a novel method of detecting faults in medium-voltage systems with covered conductors , 2017 .

[15]  Qu Zhangjun,et al.  Failure analysis of relay protection in digital substation based on fault tree , 2012, 2012 China International Conference on Electricity Distribution.

[16]  Liu Hao.  A Method to Analyze Power System Cascading Failure Based on Fault Tree and Fuzzy Reasoning , 2006 .