SWEDE 2008 ERCOT Power Factor Compliance/Non-Compliance LOU WHITE, P.E.

SWEDE 2008

ERCOT Power FactorCompliance/Non-Compliance

LOU WHITE, P.E.

ERCOT Power Factor Compliance/Non-Compliance


kVAkWfp )cos(..

222 kVARkWkVA

kW

kVARkVA

θRIkWLosses2



FY 2006-2010 TSIP

Reduction in kVAR (lagging)Increase system power factorDecrease system currentIncrease system voltage Decrease system kW losses



Power Factor Improvement CAPACITOR BANK ADDITIONS FEEDER RECONFIGURATIONS FEEDER RECONDUCTOR FEEDER ADDITIONS NEW SOURCE (SUBSTATION) DISTRIBUTED GENERATION

(COST EFFECTIVE)



Distribution Power Factor Improvement

Distribution System Advantages Power Factor Improvement Voltage Support Conductor Load Reduction kW Loss Reduction (= $$$)



Distribution Power Factor Improvement

Transmission System Advantages Defer Transmission System Improvement Projects Greater Emergency Reactive Generation Margins Better Economical Solution at Distribution Level Established Minimum Standards for DSPs



ERCOT VOLTAGE AND REACTIVE REQUIREMENTS AND COMPLIANCE MONITORING

TDSP REQUIREMENT

• Sufficient static reactive power capability shall be installed by a DSP in

substations and on the distribution voltage system to maintain at least a 0.97

lagging power factor for the maximum net active power supplied from a

substation transformer at its distribution voltage terminals to the distribution

voltage system. For any substation transformer serving multiple DSPs, this

power factor requirement shall be applied to each DSP individually for its

portion of the total load served. ROS Reactive Standard 04-09-03 as approved.doc



TRE Enforcement of Reactive Requirements

Initial Violation• Concern/Complaint ISO/RTO driven

• Violation posted on TRE website

• Letter of Violation sent to DSP and PUC

• DSP to provide Plan to Correct Violation

Continued Violation• PUC Letter of Violation sent to DSP and/or Fine



TRE Considerations for Compliance History of Compliance Future System Planning Project Scheduling



ERCOT Annual Load Data Request (ALDR) LCRA currently files on behalf of 41 customers Load Data includes delivery point kW & p.f. for:

• Current Year Winter & Summer NCP• Future Years (1-6) Winter & Summer NCP• ERCOT Current Year Winter & Summer CP• ERCOT Current Year Coincident Minimum

Load Data is reflected to PWT high-side for use in ERCOT load flow cases



ERCOT VOLTAGE AND REACTIVE REQUIREMENTS AND COMPLIANCE MONITORING

TDSP REQUIREMENT• Sufficient static reactive power capability shall be installed by a DSP in

substations and on the distribution voltage system to maintain at least a 0.97

lagging power factor for the maximum net active power supplied from a

substation transformer at its distribution voltage terminals to the distribution

voltage system. For any substation transformer serving multiple DSPs, this

power factor requirement shall be applied to each DSP individually for its

portion of the total load served. ROS Reactive Standard 04-09-03 as approved.doc



Load Forecast

Performed annually

Includes historical kW and power factors



Support Your Power Factor Monitor Delivery Point Data System Maintenance/Inspections

Questions ?



SWEDE 2008 ERCOT Power Factor Compliance/Non-Compliance LOU WHITE, P.E.

Documents

Transcript of SWEDE 2008 ERCOT Power Factor Compliance/Non-Compliance LOU WHITE, P.E.