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<Manual Date> – <Manual Filename> 1 Texas Nodal
Texas Nodal
Electrical Buses
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Electrical Bus Definition as Proposed in NPRR 63
Electrical Bus
• A physical transmission element defined in the Network Operations Model that connects, using breakers and switches, one or more Loads, lines, transformers, generators, capacitors, reactors, and phase shifters to the ERCOT Transmission Grid where there is negligible impedance between the connected transmission elements. All Electrical Buses are designated by ERCOT and TSPs for modeling the electrical topology of the ERCOT Transmission Grid.
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Example 1: Simplified Ring Bus
Lines
Disconnects
Breakers
No Electrical Buses
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Example 2: Slightly More Complicated Ring Bus
Lines
Disconnects
BreakersElectrical Buses
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Example 3: Another Ring Bus
Not Electrical BusesElectrical Buses
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Example 4: Breaker and a half
Not Electrical Buses
Electrical Buses
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Example 5: Tap with disconnects
Electrical Bus
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Example 6: Tap without Disconnects
No Electrical Buses
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Example 7: The Real World
Electrical Buses
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Example 8: The Real World
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Electrical Buses
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Example 9: The Real World
Electrical Buses
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The End?
Questions?
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Electrical Buses and the Outage Scheduler
Electrical Buses and the Outage Scheduler
Section 3.1.5.1- ERCOT Evaluation of Planned Outage and Maintenance Outage of Transmission Facilities
1. A TSP shall request a Planned Outage or Maintenance Outage for anyTransmission Element in the Network Operations Model that requires the Transmission Element to be removed from its normal service. Proposed Transmission Planned Outage or Maintenance Outage information submitted by a TSP in accordance with this Section constitutes a request for ERCOT’s approval of the Outage schedule associated with the Planned Outage or Maintenance Outage. ERCOT is not deemed to have approved the Outage schedule associated with the Planned Outage or Maintenance Outage until ERCOT notifies the TSP of its approval under procedures adopted by ERCOT. ERCOT shall evaluate requests under Section 3.1.5.11, Evaluation of Transmission Facilities Planned Outage or Maintenance
Section 2 - Definitions and AcronymsTransmission Element: A physical transmission facility that is either a Electrical Bus, line, transformer, generator, load, breaker, switch, capacitor, reactor, phase shifter, or other similar device that is part of the ERCOT Transmission Grid and defined in the ERCOT Network Operations Model.
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Electrical Bus Definition as Proposed in NPRR 63
Electrical Bus
• A physical transmission element defined in the Network Operations Model that connects, using breakers and switches, one or more Loads, lines, transformers, generators, capacitors, reactors, and phase shifters to the ERCOT Transmission Grid where there is negligible impedance between the connected transmission elements. All Electrical Buses are designated by ERCOT and TSPs for modeling the electrical topology of the ERCOT Transmission Grid.
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Outage Scheduler – Line Associations
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Electrical Bus
Choose this line
Station A
Station C
Station B
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Outage Scheduler – Line Associations
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Electrical Bus
Choose this line
Station A
Station C
Station B
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Outage Scheduler – Transformer Associations
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Electrical Bus
Choose this Transformer
Station A
Station C
Station B
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The End?
Questions?