NAESB Time and Inadvertent Management Business Practice Update (TIMBP) - PowerPoint PPT Presentation
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NAESB Time and Inadvertent Management Business Practice Update (TIMBP)
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Intended to be a very targeted business practice to address multiple concerns in ... saying Time Error Corrections (TEC) and Inadvertent Payback are NAESB's purview ... – PowerPoint PPT presentation
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Title: NAESB Time and Inadvertent Management Business Practice Update (TIMBP)
1
NAESB Time and Inadvertent Management Business
Practice Update(TIMBP)
- August 20, 2009
- Terry Bilke
2
Introduction
- Intended to be a very targeted business practice
to address multiple concerns in Order No. 693 - Originally submitted to NERC, NERC Staff and
Standards Committee rejected the SAR saying Time
Error Corrections (TEC) and Inadvertent Payback
are NAESBs purview - Relied on proven Time and Inadvertent management
practices, comparable to the WECC automatic TEC - No ERCOT/WECC impact unless they so choose
3
FERCs Order No. 693 Concerns
- Address number and efficiency of TECs
- Concerned with frequency excursions (nearly half
of reported frequency excursions occurred during
TEC even though the East is in TEC 15 of the
time) - Wants NERC to reduce and penalize large
Inadvertent balances - Asks NERC to investigate alternatives to present
TEC practices
4
EI TEC Summary 2002 2009
Present Payback Method
Old Payback Method
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Old Unilateral Payback was the Cornerstone
- Unilateral Payback Option 2 gt
Average Frequency closer to 60 Hz gt Less
Inadvertent passing around gt - Smaller Inadvertent Balances
- Average Frequency closer to 60 Hz gt
- Fewer TECsgt
Fewer Frequency Excursions - This Payback Option was rejected by the EC
6
Recent Items
- NERC BAC Team met with the FERC
- FERC Staff appears to be open to alternatives to
the Order No. 693 concerns that led to the TIMBP - This may mitigate the need for the last draft TIM
business practice - TIMTF created a tracking matrix that both teams
update - TIMTF is participating in BAC Team calls
- As the BAC Team proposes changes to BAL-002,
BAL-004, BAL-005, BAL-006 table is updated - TIMTF evaluates whether a complementary business
practice is needed
7
Potential Issue
- NERC BAC may do field tests that interface with
NAESB business practices - No NAESB process for field tests
- Field test may cause a deviation of NAESB
business practices (that are generally part of
transmission providers tariffs) - There will likely be other similar situations in
the future, looking for EC guidance
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