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ERCOT VRT

ERCOT VRT. Voltage Ride Through Standards. Standards Groups. Edison Electric Institute ( EEI ) National Electrical Manufactures Association ( NEMA ) American National Standard Institute (ANSI). Standards Groups. Federal Energy Regulatory Commission (FERC)

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ERCOT VRT

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  1. ERCOT VRT Voltage Ride Through Standards

  2. Standards Groups • Edison Electric Institute (EEI) • National Electrical Manufactures Association (NEMA) • American National Standard Institute (ANSI)

  3. Standards Groups • Federal Energy Regulatory Commission (FERC) • National Electric Reliability Council (NERC) • Western Electricity Coordinating Council (WECC) • Electric Reliability Council Of Texas (ERCOT)

  4. FERC Wind-Power Connection Standards • July 2005: Order 661 • July 2005: NERC Request for Rehearing • December 2005: Order 661 -A

  5. SPWG Proposal

  6. WECC Proposal

  7. NERC Possible Proposal

  8. FERC Order 661a • Remain connected for • bolted three phase fault cleared in less than 9 cycles • Single line to ground fault with delayed clearing (zone 2) plus voltage recovery time

  9. GRANDFATHER • Existing facilities • Signed IAs as of effective date • Commercial within 12 months of effective date • Can demonstrate to ERCOT that contracting, engineering, or procurement make compliance commercially infeasible

  10. Policy Decision ERCOT set a standard more stringent than FERC or WECC existing standards OR ERCOT adopt FERC standard and wait for NERC standard

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