rpg meeting 07-18-2008 five year plan extension brad schwarz

RPG Meeting 07-18-2008

Five Year Plan Extension

Brad Schwarz


Outline

• Goals

• Method

• Other Considerations

• Status


Goals for Five Year Plan Extension

• The 5-Year Plan extension will:– List all topology changes to the 2012 case– Identify projects to meet identified needs for reliability criteria

only

• Ultimate goal is to obtain a case to be used for evaluation of potential RPG projects until the full 5-Year Plan begins later in 2008


Method of Study

• Transmission Topology from the final 2012 Uplan case that contained all reliability and economic projects

• Load level from the latest 2013 SSWG data set B case

• Added generators that had signed Interconnect Agreements as of the first week of June– Added 1878 MW of Natural Gas generation– Added 2919 MW of Wind generation (9102 total

nameplate wind generation)


Method of Study Cont’d

• Identification of Reliability Projects– Eliminate unserved energy using the 2013

SSWG peak load forecast– ERCOT will develop “direct fix” projects and

send to Transmission Owners– Transmission Owners should review “direct

fix” projects and submit alternatives if desired

• Document work on each project added to simplify RPG Independent Review process


Other Considerations

• Currently consider ERCOT category B contingencies– N – 1 contingencies (single circuit, double circuit,

transformer, etc.)– Single generator out plus loss of single transmission

element

• Other tests for reliability– Remove dynamic ratings on lines– No output from hydro units– NERC category C contingencies (Single transformer

out plus loss of single transmission element)


Status

• Currently finished with first round of reliability analysis

• Next Steps– Send out first round of reliability analysis results to

Transmission Owners– Simulate generators out and contingency analysis– Simulate NERC Category C contingencies– Possibly simulate 2 generating unit out

simultaneously


Questions?

rpg meeting 07-18-2008 five year plan extension brad schwarz

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