Consideration of Comments Protection System Misoperations – Project 2010-05.1 The Protection System Misoperation Identification and Correction Drafting Team thanks all commenters who submitted comments on the first draft of the standard for Protection System Misoperation Identification and Correction. The standard and associated documents were posted for a 30-day public comment period from June 10, 2011 through July 11, 2011. Stakeholders were asked to provide feedback on the standard and associated documents through a special electronic comment form. There were 52 sets of comments, including comments from approximately 146 different people from approximately 106 companies, representing 10 of the 10 Industry Segments, as shown in the table on the following pages. All comments submitted may be reviewed in their original format on the standard’s project page: http://www.nerc.com/filez/standards/Project2010-05_Protection_System_Misoperations.html If you feel that your comment has been overlooked, please let us know immediately. Our goal is to give every comment serious consideration in this process! If you feel there has been an error or omission, you can contact the Vice President of Standards and Training, Herb Schrayshuen, at 404-446- 2560, or at [email protected]. In addition, there is a NERC Reliability Standards Appeals Process. 1 The definition of Protection System Misoperation has been modified to reflect comments received. Statements were incorporated into the definition so that only the overall performance of the Protection System is considered when determining a Misoperation. The non-functioning of high-speed Protection Systems required by the performance requirements of the TPL standards has been explicitly incorporated. An additional category of “Slow Trip – Other Than Fault” has been added for consistency. Exclusion of Protection System operations because of on-site maintenance, testing, construction, or commissioning activities has been added due to stakeholder comments. An exclusion to the category “Unnecessary Trip – During Fault” was added related to the proper remote Protection System operation. Comments related to “Fast Trip” were not incorporated because this type of Misoperation is included in the category “Unnecessary Trip – During Fault.” Comments related to exclusion of incorrect settings or other design flaws were not incorporated because these fit within one of the established causes of Protection System Misoperation developed by the IEEE Power System Relaying Committee, Working Group I3. Summary Consideration of all Comments Received: 1 The appeals process is in the Standard Processes Manual: http://www.nerc.com/files/Appendix_3A_Standard_Processes_Manual_20110825.pdf .
