Cvr protocol no 1 approved april 14 th 2004
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CVR Protocol No. 1 Approved April 14 th , 2004 PowerPoint PPT Presentation


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CVR Protocol No. 1 Approved April 14 th , 2004. CVR Protocol No 1 can be applied to distribution systems with Residential, Commercial, and Industrial customers.

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CVR Protocol No. 1 Approved April 14 th , 2004

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Cvr protocol no 1 approved april 14 th 2004

CVR Protocol No. 1Approved April 14th, 2004

  • CVR Protocol No 1 can be applied to distribution systems with Residential, Commercial, and Industrial customers.

  • CVR Protocol No 1 is a site specific custom protocol and can be applied to distribution systems with automatic end-of-line (EOL) voltage feedback control AVFC. The objective is to hold the Veol constant.

  • CVR Protocol No 1 requires Esub and Veol measurements of approximately six months of CVR ‘on’ and ‘off’ day period and 6 months of CVR ‘on’ period.

  • Verification of energy savings is determined using statistical analysis by calculating CVR factors (weekdays and weekends) for each weather season correlated for temperature.

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Cvr protocol no approved april 14 th 2004

CVR Protocol No. Approved April 14th, 2004

  • For each selected measurement period of on&off days, the CVR factors are statistically determined for each season (for weekdays and weekends) using the ratio of measured substation energy % change to measured average eol voltage % change. CVRf% = Esub% / Veol%

  • The CVR factors and Veol voltage are statistically assigned to each hour of the annual measured load shape. The total energy savings is annual sum of the hourly CVRf% * Veol% * Esub.

  • The Automated CVR ‘off’ setting is be 2 Volts above the CVR ‘on’ setting for two to four week periods.

  • Statistical analysis is performed using the UtiliData CVR Estimation Method.

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Automated voltage regulation techniques

Automated Voltage Regulation Techniques

Automatic Voltage Feedback Control (AVFC)

  • Fixes the voltage level at the substation source based on real-time voltage feedback sign from the end of the feeder

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Automated voltage regulation techniques1

Volts

126

120

114

Feeder Length

Automated Voltage Regulation Techniques

Existing Vset = 125V

Automatic Voltage Feedback Control (AVFC)

  • Fixes the voltage level at the substation source based on real-time voltage feedback sign from the end of the feeder

  • Old voltage setting Vset = 125V, R and X settings = 0

  • New voltage setting Vset = 119V, Veol feedback

Vset = Adjusts for load conditions based on end of line feedback

4


Cvr protocol no 1 measurements

Volts

126

120

114

Feeder Length

CVR Protocol No 1 Measurements

Existing Vset = 125V

Automatic Voltage Feedback Control (AVFC)

  • Measure Energy at Substation - Esub

    • Measure Voltage at End of Line – Veol

    • Measure Temperature at Substation - Tsub

Vset = Adjusts for load conditions based on end of line feedback

Esub

Tsub

Veol

5


Typical distribution system voltage control zone

Primary Voltage Zone

Secondary Voltage Zone

VCZ for LTC

Transformer

Feeder

Load Tap Changer (LTC)

Feeder Breaker

Typical Distribution System Voltage Control Zone

Veol

Esub

Cap


Multiple voltage control zones

VCZ for LTC

VCZ for V-Reg

Transformer

Feeder

V-Reg

Load Tap Changer (LTC)

Feeder Breaker

Multiple Voltage Control Zones

Cap


Typical automated cvr with volt var control

VCZ for LTC

VCZ for V-Reg

Transformer

Feeder

V-Reg

Load Tap Changer (LTC)

Feeder Breaker

Typical Automated CVR with Volt/Var Control

Cap

AMI

AMI


Cvr protocol no 1 questions

CVR Protocol No 1Questions

  • Does the CVR Protocol No 1 meet minimum RTF guidelines for Custom Site-Specific savings estimate and cost-effectiveness calculation methodology?

  • Is the CVR Protocol No 1 applicable to a wide variety of distribution systems configurations and operation practices?

  • Does the CVR Protocol No 1 adequately ensure comprehensive distribution system cost-effective efficiency?

  • Does the CVR Protocol No 1 adequately ensure that distribution system safety and facility standards are meet?

  • What changes are necessary to simplify the automated CVR protocol requirements and calculation methods?

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Cvr protocol no 1 issues

CVR Protocol No 1Issues

  • Verification of statistical methods to adequately evaluate savings

  • Simplified statistical measure savings calculation methods

  • Distribution load flow analysis requirements

  • Facility data requirements of lines, equipment, and loads

  • Characteristic load models (ZIP) requirements

  • Historical load data and temperature data requirements

  • Distribution system efficiency impacts

  • Location and number of voltage EOL measurements

  • Location and number of temperature sensors

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Cvr protocol no 1 issues1

CVR Protocol No 1Issues

  • Voltage measurement locations (e.g., Veol, Vsub, Vreg, Vcap)

  • System average voltage or end-of-line average voltage

  • System performance requirements (i.e., Vmax, Vmin PFmin, VDsec-max, Vsource-max, VDpri-max, Control Bandwidth)

  • Application to wide variety of automated CVR volt/var systems

  • Simplified statistical measure savings calculation methods

  • Distribution system loss impacts

  • RTF custom or standard site-specific protocol requirements

  • Sunset criteria (re-verification)

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Cvr protocol no 1 homework

CVR Protocol No 1Homework

  • Review existing CVR No.1 protocol for application to a wide variety of distribution system configurations and operations

  • Review RTF guidelines for development of RTF savings estimation methods

  • Evaluate correctness of CVRf formulation based on only one Veol measurement point given line capacitors and multiple feeders per substation each having different load profiles.

  • Compare accuracy of protocol using average system voltage vs average end of line voltage with multiple feeders, regulators, capacitors (fix/sw), and non-uniform distributed loads.

  • Suggest simplified automated CVR statistical methods, measurements, and data needed to evaluate measure savings

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Cvr protocol no 1 homework1

CVR Protocol No 1Homework

  • Evaluate the protocol effectiveness to ensure comprehensive distribution efficiency and facility safety

  • Test CVR Protocol No 1 statistical methods using NEEA DEI 2007 Study Pilot Substation data (10 substations and 31 feeders)

  • Test simplified automated CVR statistical methods using NEEA DEI 2007 Study Pilot Substation data (10 substations and 31 feeders)

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