Amr advanced applications taking it a step beyond
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AMR Advanced Applications – Taking it a Step Beyond. David Glenwright AMR Operations & Strategies NARUC July 15, 2007. Topics. Background AMR at PECO Advanced Applications Outage Management Theft Detection Engineering Studies Other Opportunities. Exelon / PECO Background.

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Amr advanced applications taking it a step beyond

AMR Advanced Applications – Taking it a Step Beyond

David Glenwright

AMR Operations & Strategies

NARUC

July 15, 2007


Topics
Topics

  • Background

  • AMR at PECO

  • Advanced Applications

    • Outage Management

    • Theft Detection

    • Engineering Studies

    • Other Opportunities


Exelon peco background
Exelon / PECO Background

  • Subsidiary of Exelon Corp (NYSE: EXC)

  • Serving southeastern Pa. for over 100 years

  • Electric and Gas Utility

  • 2,400 sq. mi. service territory

  • Philadelphia and the four surrounding counties

  • Population of approx. 4 million people



Scope of amr at peco
Scope of AMR at PECO

  • PECO’s AMR installation project lasted from 1999 to 2003

  • A Cellnet Fixed Network solution was selected.

    • 99% of meters are read by the network

    • Others are drive-by and MV-90 dial-up

  • During the project, meters were activated at a max rate of 143,500 per month.

  • Installation was performed by PECO, Cellnet, and VSI.

  • Cellnet manages the network, performs meter maintenance and provide data to PECO.

  • All meters are read daily. Additional features include on-demand reads, and event processing.


Cellnet amr network structure
Cellnet AMR Network Structure

Exelon

Applications

National

Operations Center (NOC)

System Controller

Cell Master (CM)

MicroCell

Controller (MCC)

Wide Area Network

Endpoint devices

w/CellNet Radio

Local Area Network


Amr network components
AMR network components

2.2 M Meters

~1.6 M Res. Electric

~455 K Res. Gas

~135 K Com. Electric

~42K Com. Gas

91 Cell Masters

8,318 MicroCell Controllers




Outage example
Outage Example

TRF-2

TRF-2

TRF-1

TRF-1

CALL-9

CALL-7

CALL-3

CALL-5

CALL-1

CALL-2

CALL-8

CALL-4

CALL-6

FUSE

Event Time: 00:00:00

Event Time: 11:49:00

Event Time: 11:31:00

Event Time: 11:27:00

Event Time: 11:35:00

Event Time: 11:38:00

Event Time: 11:38:00

Event Time: 11:43:00

Event Time: 11:49:00

Event Time: 11:35:00

Customers Affected: 002

Customers Affected: 003

Customers Affected: 004

Customers Affected: 001

Customers Affected: 005

Customers Affected: 006

Customers Affected: 000

Customers Affected: 018

Customers Affected: 019

Customers Affected: 086


Outage example w amr
Outage Example w/AMR

TRF-1

TRF-1

LG-3

CALL-3

CALL-1

CALL-2

LG-2

LG-1

FUSE

CALL-4

TRF-2

TRF-2

Event Time: 11:30:00

Event Time: 11:34:00

Event Time: 11:30:00

Event Time: 00:00:00

Event Time: 11:34:00

Event Time: 11:31:00

Event Time: 11:27:00

Customers Affected: 086

Customers Affected: 014

Customers Affected: 013

Customers Affected: 000

Customers Affected: 003

Customers Affected: 002

Customers Affected: 001

Customers Affected: 012

Event Time: 11:30:00



Summer slam july 18 2006
“Summer Slam” - July 18, 2006

A severe band of thunderstorms caused nearly 400,000 power outages.

Determined to be the worst summer storm ever experienced by PECO.

  • 1,200+ single customer outage calls were cancelled without crew dispatch due to meter pings that indicated power-on.

  • 750+ single customer outage calls were escalated into primary events via pings to neighboring customer’s meters. This ensured a properly skilled crew was dispatched the first time.

  • The pinging and restoration verification tools were used to confirm active jobs were valid prior to crew dispatch. Feedback from the field crews indicated that they felt like they were working more effectively because they had very few assignments that were “OK on arrival”.

  • Conservative estimates indicate that AMR has helped save in excess of $200,000 in avoided labor costs during this storm.


Amr outage management summary
AMR Outage Management Summary

  • Improved outage management performance

    • Quicker response due to last gasp

    • More efficient use of field crews due to pinging (automated & manual)

    • Validate power restoration times using daily reports

    • Reduced CAIDI by 5.5 minutes in 2005



Revenue assurance
Revenue Assurance

  • Theft detected during initial AMR installation

  • Initial focus of using various meter tamper flags to detect potential theft of service proved ineffective

  • Cellnet & PECO developed more advanced tools looking at irregular usage patterns combined with tamper flags

    • Repeated outages

    • Unexplained usage

    • Customer Load Profile / Irregular Load Shape

    • Repetitive Flags

  • Analysis is used to direct Revenue Protection crews to suspect areas


Revenue assurance reports
Revenue Assurance Reports

Outage & Reverse Rotation

No Weekend Usage


Revenue assurance reports1
Revenue Assurance Reports

Irregular Usage

No Read-Window Usage


Examples of customer bills
Examples of Customer Bills

117%

After Corrections

Prior to Corrections

96.4%

After Corrections

Prior to Corrections

128%

After Corrections

Prior to Corrections



Load management
Load Management

  • The goal is to use AMR data to get a better understanding of how the distribution system is operating.

  • Visibility into individual distribution transformer and cable loading is created

  • The models are based on combination of actual customer usage, billing data, SCADA-based substation information and weather data.

  • 4 circuits in a dense, urban environment were modeled with the Itron Distribution Asset Analysis Software


Load management pilot
Load Management Pilot

  • PECO, Itron & Microsoft collaborated to conduct a demonstration of the DAA application

  • 4 circuits in a dense, urban environment were modeled

    • 7,500 customers

    • 269 transformers

  • Data Sources

    • SCADA – 20 points input

    • Daily and ½ hourly meter data

  • Several enhancements were required to correctly model the circuits:

    • Virtual nodes to model Secondary Mains

    • Interposing, Step-Down Transformers

    • 2-Phase, Scott Connected Transformers





Preliminary daa results
Preliminary DAA Results

  • DAA predicted overloads on 2 of the 5 transformers that failed in summer ’06 on one of the demonstration circuits

    • 1 transformer failed just after midnight, customers experienced a 4 hour interruption

  • DAA provided secondary main loading data that was previously unavailable

    • Heavily loaded mains are now under analysis


Interval data pilot
Interval Data Pilot

Old City

Chinatown



Outage prediction1
Outage Prediction

  • AMR Last-Gasp and Power-Up Messages

    • 750,000 Last-Gasps Annually, 5% associated with actual outages

    • 6,000,000+ Power-Up Annually

  • Why? What do these messages mean?

  • Precursors

    • Demonstrated to give advance notice

    • Need to develop means to interpret these messages




Orphan meter analysis
Orphan Meter Analysis

  • Orphan meters are read by the AMR Network, but there is no corresponding customer location information

    • Affected customers may receive estimated bills

    • New meter sets may go unbilled – lost revenue

  • Analysis Process:

    • Map AMR network elements that are ‘hearing’ orphan meters

    • Overlay known meter locations vs. tax parcel & vacancy data

    • Identify occupied tax parcels that do not have meters that are within the range of the network device

  • Results are used to direct field area investigations






Peco utilinet pilot
PECO Utilinet Pilot

Demonstrate that the following devices can operate simultaneous via a single smart network:

  • Distribution Automation

    • Reclosers (Monitoring & Control)

    • Unit Substations (Monitoring & Control)

    • Faulted Circuit Indicators

  • Meter Reading

    • Current Meter Reading Functions

    • Remote Disconnect/Reconnect Meters

    • Interval Data/Demand Response

    • Voltage Sensing



Closing thought
Closing Thought

There continues to be a wealth of opportunities to extract real business value from AMI, well beyond what is being delivered today.


Contact information
Contact Information

David Glenwright

Manager, AMR Operations & Strategies

Email: david.glenwright@exeloncorp.com

Phone: 215-841-6174