NERC Policy 9 Security Coordinator Procedures

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NERC Policy 9Security Coordinator Procedures

• SERC System Operators Conference
• Spring - 2000

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NERC Policy 9Security Coordinator Procedures

• Objectives
• Identify and discuss significant changes
  associated topics
• Briefly review Policy 9
• Question and Answer Period

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NERC Policy 9Security Coordinator Procedures

• Significant Changes
• GDA now EEA
• iIDC now IDC
• Tag now via ETAG
• Appendix C1, TLR stuff, now a part of the pro
  forma tariff
• Implementation of Constrained Path Methodology

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NERC Policy 9Security Coordinator Procedures

• Significant Changes
• TLR levels re-arranged, re-defined
• New level of service Next Hour Hourly
• MIC/CACTF
• Automatic posting of TLR from IDC to NERC site
• MRD Pilot
• Others ???

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NERC Policy 9Security Coordinator Procedures

• Questions/Comments

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NERC Policy 9Security Coordinator Procedures

• Policy Overview
• A. Next Day Operations Planning Process
• AKA Next Day Studies
• B. Current Day Operation - Energy
• AKA Energy Emergency Alerts
• C. Current Day Operations -
• AKA Transmission Loading Relief

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NERC Policy 9A. Next Day Studies

• Not much has changed
• Exchange data, run studies, share results

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NERC Policy 9B. Energy Emergency Alerts

• Energy Emergency Alert
• An energy emergency is defined as
• A condition when a system or power pool does not
  have adequate energy resources to provide its
  customers expected energy requirements.

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NERC Policy 9B. Energy Emergency Alerts

• Alert Levels
• Alert 1 - All available resources in use
• Alert 2 - Load management procedures in effect
• Alert 3 - Firm load interruption imminent or in
  progress
• Requirements for each level recall non-firm
  sales, curtail interruptibles, bring units
  on-line etc.

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NERC Policy 9B. Energy Emergency Alerts

• Alert 1 - All available resources in use
• Conditions are such that all available resources
  are committed to meet firm load, firm
  transactions, and reserve commitments and there
  is concern about sustaining Operating Reserves
• Non-firm energy sales have been curtailed
• What does this mean for hubbed transactions ?

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NERC Policy 9B. Energy Emergency Alerts

• Prior to declaring EEA 2, EDE has to make use of
  all available resources
• Bring on-line all units available for quick start
• Make purchases made regardless of cost
• Recall non-firm sales
• Curtail interruptible loads
• Carry operating reserves below the required
  minimum or initiate emergency assistance through
  operating reserve sharing program

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NERC Policy 9B. Energy Emergency Alerts

• Alert 2 - Load management procedures in effect
• CA, LSE, or RSG is no longer able to provide
  customers expected energy requirements - defined
  to be an Energy Deficient Entity (EDE)
• EDE foresees or has implemented procedures up to
  but excluding firm load interruptions
• Public Appeals, DSM programs, Voltage Reduction,
  interruption of non-firm retail loads, utility
  conservation, etc.

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NERC Policy 9B. Energy Emergency Alerts

• Alert 3 - Firm load interruption imminent or in
  progress
• CA or LSE foresees or has implemented firm load
  obligation interruption
• Any available energy is only accessible through
  steps taken to increase ATCs

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NERC Policy 9Security Coordinator Procedures

• Questions/Comments

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NERC Policy 9C. Transmission Loading Relief

• Major revisions to procedure, new levels
• Use of CPM
• TLR filed and accepted by FERC as a part of the
  pro-forma tariff
• Changing the TLR procedure requires FERC approval
• Clarified obligation to Redispatch prior to firm
  PTP curtailment
• Introduced concept of TCF

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NERC Policy 9C. Transmission Loading Relief

• TLR Level 1
• This Level is an alert to inform the marketplace
  and other Security Coordinators that loading
  levels are increasing and that curtailments may
  occur

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NERC Policy 9C. Transmission Loading Relief

• TLR Level 2
• System is secure
• Hold Interchange Transactions at current levels
  to prevent Operating Security Limit violations
• Time limit for this level - 30 minutes
• No more renewing

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NERC Policy 9C. Transmission Loading Relief

• TLR Level 2 (cont.)
• No new transactions
• Proceed immediately to Level 3A if higher
  priority transactions are scheduled to begin

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NERC Policy 9C. Transmission Loading Relief

• TLR Levels 3A, 3B, 5A, 5B
• All are curtail transaction states
• Curtail for 2 reasons
• make room for higher priority - system secure
• mitigate overload - system not secure
• Level 3 is for curtailing non-firm
• Level 5 is for curtailing Firm
• A levels are for making room
• B levels are for mitigating overload

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NERC Policy 9C. Transmission Loading Relief

• TLR Level 4 - Reconfiguration
• Tariff obligation to reconfigure prior to
  curtailing firm transmission
• Removes previous language associated with
  redispatching

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NERC Policy 9C. Transmission Loading Relief

• TLR Level 6 - Emergency Procedures
• No change from prior versions
• Can be used if levels 2-5 fail to correct problem
• Can jump directly to Level 6 if needed
• CAs and TPs shall comply with all requests from
  SC

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NERC Policy 9C. Transmission Loading Relief

• Constrained Path Methodology (CPM)
• Transaction scheduled on system with constraint
  use priority on constrained system
• Transaction scheduled off system with constraint
  use weakest link
• Priority on tielines whoever calls for TLR first

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NERC Policy 9C. Transmission Loading Relief

• Misc Issues
• Post TLR on SCIS AND TLR Web Page
• TLR Web page populated automatically by IDC
• Update SCIS and IDC hourly
• What to do with Tags - Accept or Deny
• Timing
• when to call TLR, when to accept/deny tags, at
  what loading to call TLR, when to reload, etc.

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NERC Policy 9C. Transmission Loading Relief

• Misc. Issues
• Transmission elements not in IDC
• Questionable IDC results
• Curtailments causing a constraint elsewhere
• Redispatch options
• IDC updates
• Logging - After the fact, document, document,
  document, document, document, document, document,
  document, .
• MIC/SCS review of TLR events - see above

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NERC Policy 9Security Coordinator Procedures

• Questions/Comments