Transcript ERCOT Power Factor Compliance/Non

SWEDE 2008
ERCOT Power Factor
Compliance/Non-Compliance
LOU WHITE, P.E.
ERCOT Power Factor
Compliance/Non-Compliance
p. f .  cos( )  kW
kVA
kVA
kVA  kW  kVAR
2
2
kWLosses  I 2 R
2
kVAR
θ
kW
ERCOT Power Factor
Compliance/Non-Compliance
Reduction in kVAR (lagging)
Increase system power factor
Decrease system
current
FY 2006-2010
TSIP
Increase system voltage
Decrease system kW losses
ERCOT Power Factor
Compliance/Non-Compliance
 Power Factor Improvement
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CAPACITOR BANK ADDITIONS
(COST
EFFECTIVE)
FEEDER
RECONFIGURATIONS
FEEDER RECONDUCTOR
FEEDER ADDITIONS
NEW SOURCE (SUBSTATION)
DISTRIBUTED GENERATION
ERCOT Power Factor
Compliance/Non-Compliance
Distribution Power Factor Improvement
 Distribution System Advantages


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
Power Factor Improvement
Voltage Support
Conductor Load Reduction
kW Loss Reduction (= $$$)
ERCOT Power Factor
Compliance/Non-Compliance
Distribution Power Factor Improvement
 Transmission System Advantages
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Defer Transmission System Improvement Projects
Greater Emergency Reactive Generation Margins
Better Economical Solution at Distribution Level
Established Minimum Standards for DSPs
ERCOT Power Factor
Compliance/Non-Compliance
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
ERCOT Power Factor
Compliance/Non-Compliance

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
ERCOT Power Factor
Compliance/Non-Compliance
 TRE Considerations for Compliance
 History of Compliance
 Future System Planning
 Project Scheduling
ERCOT Power Factor
Compliance/Non-Compliance
 ERCOT Annual Load Data Request (ALDR)
 LCRA currently files on behalf of 41 customers
 Load Data includes delivery point kW & p.f. for:
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•
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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 Power Factor
Compliance/Non-Compliance
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
ERCOT Power Factor
Compliance/Non-Compliance
Load Forecast
Performed annually
Includes historical kW and power
factors
ERCOT Power Factor
Compliance/Non-Compliance
 Support Your Power Factor
 Monitor Delivery Point Data
 System Maintenance/Inspections
ERCOT Power Factor
Compliance/Non-Compliance
Questions ?