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From: ERCOT Client Services <[log in to unmask]>
To: "[log in to unmask]" <[log in to unmask]>
Subject: M-A062118-05 Update - Request for Resource Entities and Transmission
 Service Providers (TSPs) to provide to ERCOT a list of Geomagnetic
 Disturbance (GMD) event contingencies for the benchmark GMD event for use in
 the GMD vulnerability assessment
Thread-Topic: M-A062118-05 Update - Request for Resource Entities and
 Transmission Service Providers (TSPs) to provide to ERCOT a list of
 Geomagnetic Disturbance (GMD) event contingencies for the benchmark GMD event
 for use in the GMD vulnerability assessment
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EXTERNAL EMAIL




***** EXTERNAL email. Please be cautious and evaluate before you click on l=
inks, open attachments, or provide credentials. *****

NOTICE DATE:  January 23, 2019

NOTICE TYPE:  M-A062118-05 Operations

SHORT DESCRIPTION:  Update - Request for Resource Entities and Transmission=
 Service Providers (TSPs) to provide to ERCOT a list of Geomagnetic Disturb=
ance (GMD) event contingencies for the benchmark GMD event for use in the G=
MD vulnerability assessment

INTENDED AUDIENCE:  Resource Entities and TSPs

DAYS AFFECTED:  January 22, 2019 and March 31, 2019

LONG DESCRIPTION:  This Market Notice is to clarify ERCOT=92s previous requ=
est.  ERCOT requests that Resource Entities and TSPs provide a list of pote=
ntial equipment removed from service as a result of Protection System opera=
tion or Misoperation due to harmonics that could result from the benchmark =
GMD event as described in =93Table 1: Steady State Planning GMD Event=94 of=
 North American Electric Reliability Corporation (NERC) Reliability Standar=
d TPL-007-1, Transmission System Planned Performance for Geomagnetic Distur=
bance Events (GMD event contingencies).

ACTION REQUIRED:    Resource Entities and TSPs are required to assess the i=
mpact of the benchmark GMD event on their equipment to develop the list of =
potential equipment removed from service during the benchmark GMD event.  S=
end all responses via e-mail to [log in to unmask]<mailto:ClientServi=
[log in to unmask]> with =93Benchmark GMD Event=94 in the subject line by March =
31, 2019.  Additionally, Resource Entities and TSPs with no potential equip=
ment that may trip offline due to harmonics during the benchmark GMD event =
should so state in their email submission.  If a reply to ERCOT=92s origina=
l request has been made applying the additional information in this request=
, no further action is required.

ADDITIONAL INFORMATION:  On January 22, 2019, ERCOT partially implemented P=
lanning Guide language associated with Planning Guide Revision Request (PGR=
R) 057, Responsibilities for Performing GMD Vulnerability Assessments. Spec=
ifically, paragraph (2) of Section 6.11, Process for Developing Geomagnetic=
ally-Induced Current (GIC) System Models, was unboxed.  Remaining portions =
of PGRR057 will be implemented at a later date.  PGRR057 aligns the Plannin=
g Guides with NERC Reliability Standard TPL-007-1, Transmission System Plan=
ned Performance for Geomagnetic Disturbance Events, by identifying responsi=
bilities for performing studies needed to complete GMD vulnerability assess=
ments.

In addition to Resource Entities and TSPs, this Notice is also issued to co=
mpliance contacts for all Generator Owners and Transmission Owners register=
ed with NERC.

NERC Geomagnetic Disturbance Planning Guide<https://urldefense.proofpoint.c=
om/v2/url?u=3Dhttps-3A__www.nerc.com_comm_PC_Geomagnetic-2520Disturbance-25=
20Task-2520Force-2520GMDTF-25202013_GMD-2520Planning-2520Guide-5Fapproved.p=
df&d=3DDwMFAg&c=3Dtrp9rTvIdyEWh1VWB5x8_2JiPaB5oGZOtWPDws2_VoY&r=3Dz6mcU32pe=
zHakzj1Age6bzyvvGTL1Cfh9Lgs8Hh1k1aLff4eZ9zssbCbSrz9unKt&m=3DVeqwQKOA-vY-M5Z=
8KcSF3A5kczseGPgcrLr138hWujc&s=3DMpZAz6VWhYozYRnvsrzSfQQQW2IgBU0cbvZxHQsrt9=
Q&e=3D> may be used as a reference to develop the requested list of potenti=
al equipment.  This guide can be found on NERC website.

Please use the ERCOT Benchmark GMD Event Data Request<http://www.ercot.com/=
content/wcm/key_documents_lists/54489/ERCOT_GMD_Event_Caused_Outages_Data_R=
equest.xlsx> form, which can be found on the ERCOT Planning Geomagnetic Dis=
turbance Task Force<http://www.ercot.com/committee/pgdtf> (PGDTF) landing p=
age, for GMD event caused outages submission.  The form also includes descr=
iptions of the requested information.

Please review the ERCOT website for previous Market Notices<http://www.erco=
t.com/services/comm/mkt_notices/archives/search?q=3DM-A062118-04&sort=3D> r=
elated to this subject.

CONTACT:  If you have any questions, please contact your ERCOT Account Mana=
ger. You may also call the general ERCOT Client Services phone number at (5=
12) 248-3900 or contact ERCOT Client Services via email at ClientServices@e=
rcot.com<mailto:[log in to unmask]>.

If you are receiving email from a public ERCOT distribution list that you n=
o longer wish to receive, please follow this link in order to unsubscribe f=
rom this list: http://lists.ercot.com.



mm


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<div><br>
<b><font color=3D"red">***** EXTERNAL email. Please be cautious and evaluat=
e before you click on links, open attachments, or provide credentials. ****=
*</font></b>
</div>
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span class=3D"StyleBold">NOTICE DATE:</span>&nbsp; =
January 23, 2019<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">NOTICE TYPE:</span>&nbsp; =
M-A062118-05 Operations<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">SHORT DESCRIPTION:</span>&=
nbsp; Update - Request for Resource Entities and Transmission Service Provi=
ders (TSPs) to provide to ERCOT a list of Geomagnetic Disturbance (GMD)
<span style=3D"color:#0D0D0D">event contingencies for the benchmark GMD </s=
pan>event for use in the GMD vulnerability assessment
<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">INTENDED AUDIENCE:</span>&=
nbsp; Resource Entities and TSPs<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">DAYS AFFECTED:</span>&nbsp=
; January 22, 2019 and March 31, 2019<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">LONG DESCRIPTION:</span>&n=
bsp; This Market Notice is to clarify ERCOT=92s previous request.&nbsp;
<span style=3D"color:#0D0D0D">ERCOT requests that Resource Entities and TSP=
s provide a list of potential equipment
</span>removed from service as a result of Protection System operation or M=
isoperation due to harmonics
<span style=3D"color:#0D0D0D">that could result from the benchmark GMD even=
t as described in =93Table 1: Steady State Planning GMD Event=94 of North A=
merican Electric Reliability Corporation (NERC) Reliability Standard TPL-00=
7-1, Transmission System Planned Performance
 for Geomagnetic Disturbance Events</span><span style=3D"color:black"> </sp=
an><span style=3D"color:#0D0D0D">(GMD event contingencies).</span><span sty=
le=3D"color:black"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">ACTION REQUIRED:</span>&nb=
sp;&nbsp;&nbsp; <span style=3D"color:black">
Resource Entities and TSPs are required to assess the impact of the benchma=
rk GMD event on their equipment to develop the list of potential equipment =
removed from service during the benchmark GMD event.</span><span style=3D"c=
olor:#1F497D">&nbsp;</span>
<span style=3D"color:#0D0D0D">Send all responses via e-mail to <span class=
=3D"MsoHyperlink">
<span style=3D"color:#0D0D0D"><a href=3D"mailto:[log in to unmask]"><=
span style=3D"color:#0D0D0D">[log in to unmask]</span></a></span></sp=
an> with =93Benchmark GMD Event=94 in the subject line by March 31, 2019.&n=
bsp; Additionally, Resource Entities and TSPs with
 no potential equipment that may trip offline due to harmonics during the b=
enchmark GMD event should so state in their email submission.&nbsp; If a re=
ply to ERCOT=92s original request has been made applying the additional inf=
ormation in this request, no further action
 is required.&nbsp; </span><o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">ADDITIONAL INFORMATION:</s=
pan>&nbsp; On January 22, 2019, ERCOT partially implemented Planning Guide =
language associated with Planning Guide Revision Request (PGRR) 057, Respon=
sibilities for Performing GMD Vulnerability
 Assessments. Specifically, paragraph (2) of Section 6.11, Process for Deve=
loping Geomagnetically-Induced Current (GIC) System Models, was unboxed.&nb=
sp; Remaining portions of PGRR057
<span style=3D"color:black;background:white">will be implemented at a later=
 date.&nbsp; PGRR057 aligns the Planning Guides with NERC Reliability Stand=
ard TPL-007-1, Transmission System Planned Performance for Geomagnetic Dist=
urbance Events, by identifying responsibilities
 for performing studies needed to complete GMD vulnerability assessments.</=
span><o:p></o:p></p>
<p class=3D"MsoNormal">In addition to Resource Entities and TSPs, this Noti=
ce is also issued to compliance contacts for all Generator Owners and Trans=
mission Owners registered with NERC.&nbsp;
<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"MsoHyperlink"><a href=3D"https://urld=
efense.proofpoint.com/v2/url?u=3Dhttps-3A__www.nerc.com_comm_PC_Geomagnetic=
-2520Disturbance-2520Task-2520Force-2520GMDTF-25202013_GMD-2520Planning-252=
0Guide-5Fapproved.pdf&amp;d=3DDwMFAg&amp;c=3Dtrp9rTvIdyEWh1VWB5x8_2JiPaB5oG=
ZOtWPDws2_VoY&amp;r=3Dz6mcU32pezHakzj1Age6bzyvvGTL1Cfh9Lgs8Hh1k1aLff4eZ9zss=
bCbSrz9unKt&amp;m=3DVeqwQKOA-vY-M5Z8KcSF3A5kczseGPgcrLr138hWujc&amp;s=3DMpZ=
Az6VWhYozYRnvsrzSfQQQW2IgBU0cbvZxHQsrt9Q&amp;e=3D">NERC
 Geomagnetic Disturbance Planning Guide</a></span> may be used as a referen=
ce to develop the requested list of potential equipment.&nbsp; This guide c=
an be found on NERC website.<o:p></o:p></p>
<p class=3D"MsoNormal">Please use the <a href=3D"http://www.ercot.com/conte=
nt/wcm/key_documents_lists/54489/ERCOT_GMD_Event_Caused_Outages_Data_Reques=
t.xlsx">
ERCOT Benchmark GMD Event Data Request</a> form, which can be found on the =
ERCOT <span class=3D"MsoHyperlink">
<a href=3D"http://www.ercot.com/committee/pgdtf">Planning Geomagnetic Distu=
rbance Task Force</a></span> (PGDTF) landing page, for GMD event caused out=
ages submission.&nbsp; The form also includes descriptions of the requested=
 information.&nbsp;
<o:p></o:p></p>
<p class=3D"MsoNormal">Please review the ERCOT website for <span class=3D"M=
soHyperlink">
<a href=3D"http://www.ercot.com/services/comm/mkt_notices/archives/search?q=
=3DM-A062118-04&amp;sort=3D">previous Market Notices</a></span> related to =
this subject.&nbsp;<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold">CONTACT:</span>&nbsp; If y=
ou have any questions, please contact your ERCOT Account Manager. You may a=
lso call the general ERCOT Client Services phone number at (512) 248-3900 o=
r contact ERCOT Client Services via email
 at <span class=3D"MsoHyperlink"><a href=3D"mailto:[log in to unmask]
">[log in to unmask]</a></span>.<o:p></o:p></p>
<p class=3D"MsoNormal"><span class=3D"StyleBold"><span style=3D"font-size:1=
0.0pt">If you are receiving email from a public ERCOT distribution list tha=
t you no longer wish to receive, please follow this link in order to unsubs=
cribe from this list:
</span></span><span class=3D"MsoHyperlink"><span style=3D"font-size:10.0pt"=
><a href=3D"http://lists.ercot.com">http://lists.ercot.com</a></span></span=
><span style=3D"font-size:10.0pt">.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt"><o:p>&nbsp;</o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt">mm</span><span styl=
e=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif"><o:p></o:=
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