Line protection: Redundancy, reliability, and affordability

In this paper, we apply fault tree analysis to compare the dependability and security of line protection schemes with different degrees of redundancy. We also compare the scheme costs. For each scheme, we use a basic protection scheme as the reference. We then evaluate schemes with double redundancy and two-out-of-three voting schemes. We also evaluate the effect of comprehensive commissioning testing, hidden failures, and common-mode failures, as well as using relays from the same or different manufacturers in redundant schemes.

[1]  Levi Portillo,et al.  Using innovative electrical and electronic devices in the reduction of panel size , 2010, 2010 63rd Annual Conference for Protective Relay Engineers.

[2]  K. Zimmerman.  Commissioning of Protective Relay Systems , 2008, 2008 61st Annual Conference for Protective Relay Engineers.

[3]  Mark Adamiak,et al.  Reliabilty of protection systems (what are the real concerns) , 2010, 2010 63rd Annual Conference for Protective Relay Engineers.

[4]  A. Jezak,et al.  Aggressive electromechanical relay panel replacement project at TXU electric delivery , 2005, 58th Annual Conference for Protective Relay Engineers, 2005..

[5]  Paul M. Anderson.  Power System Protection , 1998 .

[6]  Ramón Sandoval,et al.  Evaluation of Methods for Breaker-Flashover Protection , 2004 .

[7]  John Zipp,et al.  Redundancy considerations for protective relaying systems , 2010, 2010 63rd Annual Conference for Protective Relay Engineers.

[8]  P. Anderson,et al.  RELIABILITY ANALYSIS OF TRANSMISSION PROTECTION USING FAULT TREE METHODS , 1997 .

[9]  David Costello,et al.  Lessons learned from commissioning protective relaying systems , 2009, 2009 62nd Annual Conference for Protective Relay Engineers.

[10]  Scott A. Shappell,et al.  A Human Error Analysis of Commercial Aviation Accidents Using the Human Factors Analysis and Classification System (HFACS) , 2001 .