Electric Distribution Reliability

OIR R.14-12-014 Workshop

May 26 - 27, 2015

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Presentation Outline

1. Historical Reliability Performance

2. Outage Review Team (ORT)

3. Reliability Programs

4. Targeted (Worst Performing) Circuits

5. Customer Impact

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Historical T&D Reliability Performance

2009 2010 2011 2012 2013 20140

20

40

60

80

100

120

140

160

180

157.5 157.2

141.9131.5

116.8110.2

Reliability Performance2009 to 2014 T&D SaIDI Values

(Excluding 2.5b ME Days & ISO Outages)

2009 2010 2011 2012 2013 20140

0.2

0.4

0.6

0.8

1

1.2

1.4

1.211 1.208

1.0911.128

1.067

0.967

Reliability Performance2009 to 2014 T&D SaIfI Values

(Excluding 2.5b ME Days & ISO Outages)

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Outage Reviews

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Utility Operations (UO) Standard S2010 is the “Electric System Outage Review Process”. The purpose of the standard is to:

• Ensure that outage reviews are implemented in an efficient, consistent, and timely manner.

• Establish unplanned outage review requirements and procedures for all outages.

• Identify possible best practices or enhancements to the transmission and distribution systems that would reduce the incidence and duration of future outages.

• Prioritize and monitor equipment requiring repair.

Utility Operations Standard S2010: Description

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The Outage Review Team (ORT) is responsible for implementing Utility Operations Standard S2010. Responsibilities include the following:

• Ensure that all outages are reviewed.

• Document and assign action items associated with the outage review. Action item examples are field investigations, coordination studies, reliability projects, and maintenance.

• Ensure that all action items are tracked until completion.

• Prioritize and monitor equipment requiring repair.

Utility Operations Standard S2010: Implementation

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The Distribution Outage Review Team is comprised of the following members:

• Area Region Director • Maintenance & Construction Superintendent • Troubleman Supervisor (Restoration)• Supervising Distribution Engineer (Planning)• Distribution Reliability Engineer (Planning)• Operating Supervisor (Control Center)• Vegetation Management • Substation Maintenance & Construction Superintendent • Sales and Services Manager/Supervisor • Area Reliability Engineer (Reliability)

Each team member has a defined role and responsibility.

Utility Operations Standard S2010: ORT Representatives

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Utility Operations Standard S2010:

Workflow Layout

ILIS

ILIS

ILIS

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Daily Reliability Scorecard (22 January 2014) Total Unplanned and Planned Outages Total Unplanned Outages Total Planned Outages

T&D SAIDI Actual

SAIDI Goal

SAIFI Actual

SAIFI Goal

CAIDI Actual

CAIDI Goal

SAIDI Actual

SAIDI Goal

CESO Actual

CESO Goal

CAIDI Actual

CAIDI Goal

SAIDI Actual

SAIDI Goal

CESO Actual

CESO Goal

CAIDI Actual

CAIDI Goal

Daily 0.21 0.26 0.0015 0.0024 135 108 0.14 0.22 6,527 11,888 113 101 0.07 0.03 1,703 942 216 199

MTD 4.41 5.72 0.044 0.0527 100 108 3.73 4.95 214,382 261,536 93 101 0.67 0.77 21,140 20,724 171 199

YTD 4.41 5.72 0.0440 0.0527 100 108 3.73 4.95 214,382 261,536 93 101 0.67 0.77 21,140 20,724 171 199

Fuse, Switches, & Other

Division Feeder Name Report # FNL LVL Basic Cause

Supplemental Cause CESO CMIN CAIDI Duration FCR EO Flags

Sierra PLACERVILLE 2106

14-0005634

01/22/14 15:59

DC Equipment Failure/Involved

Broken Recloser 740 77,700 105 105 105 0

Peninsula DALY CITY UNIT 0401

14-0005534

01/22/14 10:25

DC Equipment Failure/Involved

Burned Open Jumper

158 60,198 381 381 381 0 E

Central Coast

CASTROVILLE 2103***

14-0005507

01/22/14 06:49

DC Equipment Failure/Involved

Broken, wire on ground Connector or Splice (OH)

174 47,364 272 321 80 0 DRE#

Central Coast

SALINAS 1102 14-0005469

01/21/14 22:18

DC 3rd Party Vehicle 126 34,411 273 281 275 0 E

Sacramento CATLETT 1101 14-0005491

01/22/14 04:59

DC Unknown Cause Patrol - found nothing

190 27,740 146 146 146 0 DR

Central Coast

CAMP EVERS 2103***

14-0005480

01/21/14 21:27

DC 3rd Party Vehicle 194 22,804 118 484 231 0 DRF#

Sacramento DAVIS 1105 14-0002662

01/22/14 08:59

DC Equipment Failure/Involved

Blown/exploded Elbow

72 12,672 176 176 176 0 RF

Central Coast

SALINAS 1104 14-0005409

01/22/14 08:26

DC Equipment Failure/Involved

Broken Connector or Splice (OH)

71 12,496 176 176 176 0 F

Sacramento RICE 1103 14-0005382

01/21/14 09:11

DC Equipment Failure/Involved

Fire, Grass 6 8,328 1,388 1,388 1,388 6 DAe

Yosemite CURTIS 1703 14-0005483

01/22/14 00:39

DC Unknown Cause Patrol - found nothing

39 7,644 196 196 196 0 R

Humboldt BIG RIVER 1101

14-0005655

01/22/14 14:31

DC Vegetation Tree - branch fell on line

82 4,838 59 59 59 0

Sacramento PUTAH CREEK 1105***

14-0005698

01/22/14 17:30

DC Unknown Cause Patrol - found nothing

57 4,731 83 83 83 0

Daily Reliability Scorecard Example

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Daily Incident Logging Information System (ILIS) - Report Example

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Utility Operations Standard S2010: Outage Review Trigger

Outage Cause Investigation Trigger Levels:Any outage that meets trigger level must be thoroughly investigated. The outage investigation can range from a detailed study by the Outage Review Team up to a zone patrol and/or infrared patrol. The extent of the investigation will be determined by the Outage Review Team. Each outage cause investigation will be recorded as an action item and must be reported at the subsequent Outage Review Team meetings by the designated lead until the item has been completed.

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Putah Creek Sub

Putah Creek 1105

Fuse 2777

Putah Creek 1105 Circuit Layout

2013-14 Outage History for Fuse 2777 identified multiple interruptions.

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Fuse 2777 Circuit Layout – Outage Review Team Action Items

Fuse 2777

North Region East ORT Review and Action Items:

Status Div Circuit Outage# Rpt Date Equip ID Assigned Department Description of Action Item Action Taken Complete Date

Closed

Sacramento PUTAH CREEK 1105*** 13-0076934 11/19/2013 6:432777 Harrington, Bill Restoration: Detailed Patrol

Found 3 locations where turkeys getting into line, M&C installed kingpins & crossarms WLH3 1/2/14

Closed

Sacramento PUTAH CREEK 1105*** 13-0083477 12/27/2013 7:06

2777 Harrington, bill Restoration

Bill Harrington please have a detailed patrol completed.

Found 3 locations where turkeys getting into line, M&C installed kingpins & crossarms WLH3 1/2/14

Closed Sacramento PUTAH CREEK 1105*** 14-0003263 1/10/2014 7:01 2777 Harrington, Bill Restoration Detailed Patrol M&C re-framed several poles 1/31/2014

OpenSacramento PUTAH CREEK 1105*** 14-0016655 3/8/2014 6:12

2777 Restoration

Detailed patrol and check the map for accuracy on Fault Indicators

Turkey contact locations

Putah Creek 1105

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Fuse 2777 Reliability Improvement Work

Putah Creek 1105

Fuse 2777 (refused with 30T)

Install 10T fuse(Fuse 718103)

Install 20T fuse

Reliability Improvement Work- Outage duration reduction work. Completed 1/2/14.- Equipment and bird outage prevention work. Completed 1/31/14.- Outage impact reduction work, a MWC 49X project. Completed 4/18/14.

Install Fault Indicators

Reframed PoleAdjusted Slackspan & Installed Birdguards

Reframed Pole

Replaced Crossarm

Adjusted Slackspan

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Daily ILIS Report Example – Post Work

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Reliability Programs

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Reliability Strategy Mission

PG&E’s distribution reliability strategy supports the company’s mission of safe, reliable and affordable service.

Safety is enhanced from the distribution reliability program by: • Reducing wire-down incidents • Preventing equipment failures • Hardening the mainline – addressing potential risks and

driving mitigation efforts.• Increasing distribution automation• Designing a system resilient to external effects

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Distribution Reliability Improvement Measure

The distribution reliability program’s primary goal is to improve SAIDI with a focus on improving SAIFI. Additional benefits can be realized in Wire-down, and reducing repeat outages.

The current strategy includes:

1. Preventing recurring outages by identifying and addressing root causes including:• Reviewing on ORT call and at monthly meetings.

2. Limiting the impact of outages when they occur by:• Protecting the distribution mainline from tap line outages• Hardening the distribution system• Installing automatic restoration schemes• Effecting design changes to support reliability strategies

3. Enhancing customer communications; address emerging reliability concerns as they occur to minimize customer impact and exposure.

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Distribution Reliability Improvement Program

MWC 08 – Overhead Asset Replacement Program• Conductor replacements and switches

MWC 49 – Targeted Reliability Programs• 49B Line Recloser Controller Upgrades• 49C Overhead Fuse Installation Program• 49D Line Recloser/Switch Installation Program• 49E Targeted (worst performing) Circuits• 49F/G Underground Fuse and Interrupter Program• 49H/I Overhead /Underground Fault Indicator Program & Line

Sensors • 49S FLISR Scheme Installation Program• 49X Emerging Reactive Work (Outage Review Team action items)

MWC 56 – Underground Asset Replacement Program• Cable replacement and switches

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Reliability Maintenance Programs

• Vegetation Management- systematic and targeted tree trimming / removals.

• Patrols and Inspections – annual patrols and regular overhead and underground inspections.

• Line Maintenance – perform corrective maintenance.

• Pole Maintenance – pole testing and treating

• Insulator Washing – annual washing program.

• Infrared Patrols – annual inspections of overhead system.

Targeted Circuit Program

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Targeted Circuit Program (MAT 49E)

ObjectiveImprove customer service reliability of historically poor performing distribution circuits.

Prioritization Model• Circuits targeted based on high three year historical annual average of

mainline Customers Experiencing Sustained Outages (CESO).• Hot-Spot circuits that merit accelerated action due to poor

performance.

Targeted Circuit Program (2009-2015)The program was initiated in 2009 and has since targeted an average of approximately 65 circuits per year. Circuit reliability statistics are updated annually prior to identifying population of circuits targeted for improvements.

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Targeted Circuit Program (MAT 49E)

Targeted Circuit Project Focus: • Inspect mainline equipment to identify non-standard equipment

requiring replacement or non-compliance issues requiring resolution.

• Patrol and/or infrared circuit mainline to identify issues requiring resolution.

• Perform detailed engineering analysis to sectionalize the circuit mainline and to minimize outage duration.

Targeted Circuit Work Scope Menu:• Repair/replace existing failure-prone non-standard/compliant

mainline equipment and conductors.• Install new protection devices(fuses, reclosers, interrupters) to

isolate circuit branches and deploy fault indicators.• Install animal and bird guards, reframe poles that increases phase

separation, trim trees, and complete high impact previously identified maintenance tags.

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Targeted Circuit – Detailed Patrol / Infrared

A Damaged/Rotten cross arms Q Flash / arcing marks on equipmentB Missing / damaged animal guards. Riser, equipment, jumpers. R Cable jackets damaged and/or not sealed

C1 Flashed/damaged connectors or tap clamp/PG. S Electronic Fault Indicators required in mainline enclosuresC2 Excessive number of connectors on a span T Vegetation - growing into enclosuresD Raptor Frame - Framing / conductor-spacing issues U Animal guardsE Equipment – Flash / Arcing / Leaking oil / V Deteriorated/damaged enclosure or pad

F Un-fused tap – Explain exposure. WSubsurface equipment enclosure and/or Splice Box not of sufficient strength for the location.

G Guy - Slack conductors, anchor, and/or Guy wire. X Insufficient connector / cableH SP Transformers Y Infrared location (3)I Damaged/Flashed/Arching/Dirty InsulatorsJ Energized idle taps ZK Pole – Leaning / Bent / Rotten / Overloaded.L Flashed/Blown lightning arrestorsM Vegetation - Overhanging tree branches, palm, and clearance.N Tie Wire DamagedO Damaged/frayed or bird-caged conductorsP Infrared Location

OH Sections UG Sections

ADDITIONAL FINDINGS

DescriptionA detailed patrol of the circuit mainline is performed to identify issues on the circuit. The goal is to identify anything that could cause an outage. At a minimum, the items that shall be looked at and/or identified are:

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Targeted Circuit Example – Apple Hill 2102

Apple Hill 2102 Executed as part of the 2012

Targeted Circuit Program.

Apple Hill 21023-yr Historical Annual CESO Ave = 39,591

(Yrs 2007-2009)

On average, it takes two years to complete construction of a Targeted Circuit project, from initiation to completion.

Targeted Circuit Project GoalThe goal of the Targeted Circuit Project is to reduce annual CESO by 25%. For Apple Hill 2102, the three yr (2007-2009) historical average annual CESO was 39,591.

Year 2014 post construction actual CESO performance was 20,062 representing a 49% reduction.

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Targeted Circuit Program – CESO Results

Annual CESO Count#

Circuits2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

3-Yr Ave

% Improve

2009 Targeted Circuits 22 72,072 97,921 214,908 171,864 167,559 81,263 76,211 63,904 59,398 88,017 66,102 128,300 48%Monte Rio 1113 1 13,864 20,201 15,492 17,987 9,668 17,010 8,010 796 7,392 6,773 10,219 16,519 38%

2010 Targeted Circuits 82 510,390 583,228 719,846 822,183 700,718 596,275 517,559 351,200 343,226 283,757 354,477 708,419 50%Camp Evers 2106 1 40,212 21,492 26,592 34,016 36,244 21,860 48,798 32,038 20,574 21,462 18,088 27,367 34%

2011 Targeted Circuits 80 371,990 469,529 428,540 430,306 649,294 794,550 515,094 339,574 364,691 302,860 256,587 502,713 49%El Dorado PH 2101 1 13,054 12,953 24,195 19,813 20,318 24,653 30,922 24,222 11,042 10,256 13,675 21,442 36%

2012 Targeted Circuits 74 335,173 336,347 386,808 332,637 447,334 427,182 587,790 375,446 333,073 238,571 279,991 402,384 30%Apple Hill 2102 1 25,600 23,164 57,924 32,666 34,986 51,120 20,260 26,390 51,864 20,612 20,062 39,591 49%

2013 Targeted Circuits 76 268,543 276,304 292,801 217,364 276,139 285,929 371,588 516,824 327,944 210,943 184,737 311,219 41%Mission 1116 1 0 296 0 271 12,871 13,530 23,135 14,828 8,832 0 1,510 16,512 91%

2014 Targeted Circuits 50 226,995 202,670 210,081 151,706 130,128 131,658 162,099 187,024 363,278 117,179 111,088 160,260 31%Substation D 1110 1 110 858 4,838 442 15,184 14,467 4,723 5,490 8,905 1,346 5,268 8,227 36%

2015 Targeted Circuits 39 89,582 167,999 151,441 131,901 138,632 115,139 136,348 120,872 196,091 177,396 140,745 164,786 N/AGreen Valley 2103 1 0 6,758 6,576 5,983 14,074 4,867 5,865 7,087 14,325 11,373 21,377 9,092 N/A

2016 Targeted Circuits 52 173,225 117,156 148,012 118,569 114,588 91,465 104,628 162,630 192,791 256,739 153,614 204,053 N/AMabury 1102 1 1,276 3,987 805 5,495 2,156 355 1,884 5,601 2,493 15,640 7,078 7,911 N/A

2017 Targeted Circuits 48 110,948 162,316 150,347 132,507 145,447 112,975 142,898 117,710 161,445 148,889 185,914 165,416 N/APeabody 2113 1 0 2,443 13,318 2,564 8,839 14,798 9,513 4,510 6,408 9,127 9,806 8,447 N/A

• Line containing year represents the characteristics of the population of circuits that were improved during the year.

• The second line represents the worst performing circuit of that population.

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Customer Impact(include six PDF documents

saved in folder)

Customer Impact Electric ReliabilityOur People & Our WorkCustomer Outreach Specialists:• Multidisciplinary Team Approach to develop a local

strategy• Government Relations, Division Leadership Lead,

Media, Project Management• Deliver Proactive Trigger Based Outreach• Advocate for the Customer• Promote Powerline Safety and Electric Reliability• Drive Customer Satisfaction

Outreach Menu Approximate Timing

Pre-Project Letter 2-4 weeks prior to project mobilization

Open House / Telephone Town Hall 1 week prior to project mobilization

Employee updates via PG&E@Work, Currents and Division Leadership Team (DLT) emails

2-14 weeks prior to mobilization

Neighborhood Canvassing with Door Hangers 1 week prior to mobilization

Customer Sat Tailboard with Crew Day of project mobilization

On-site to answer customer questions Day of project mobilization

Project Signage Hang 2-4 weeks prior to mobilization

Post-Project Letter 1 week after project demobilization

Mid-Construction Updates As needed throughout project

Customer Satisfaction Survey 2-4 weeks after project demobilization

Our GoalThe goal of the Customer Impact Electric Reliability team is to enhance customers’ experience by providing proactive information during electric reliability projects to assist in safe and efficient project completion. We do this by providing a personalized connection as the liaison between PG&E operations and the community.

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Engaging Customers

PG&ELocal Gov’t

Customers

Earned media and advertising

PG&E owned assets

Community events

Local government outletsDirect to customer

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Communication Effectiveness Results

Measure 2013 2014

Overall satisfaction with communications among those who read it Customers who recalled the communications and experienced a planned outage related to the reliability project.

80%85%

84%89%

Overall satisfaction with Reliability of Service Customers who recalled the communications and experienced a planned outage related to the reliability project. 

84%84%

87%88%

Customers whose opinion of PG&E improved based on the reliability communications

27% 28%

Customers whose perception of PG&E’s electric service reliability improved based on the reliability communications

28% 30%

Customers whose level of trust of PG&E improved based on the reliability communications

23% 27%

Customers who feel much/somewhat safer based on the reliability communications

78% 85%

Measures customer recall of communications concerning technology upgrades designed to improve electric reliability.