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SF6 Free Alternative Medium and High Voltage Circuit Breakers: Vacuum

Technology

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mailto:[email protected]

SF6 Free Alternative Medium and High Voltage Circuit Breakers:

Vacuum Technology

Volha Roshchanka Program Manager, USEPA

September 14, 2020

www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership

2

http://www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership

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https://www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership


Electric Power Systems Voluntary Partnership for SF6

Mission: To reduce emission of sulfur hexafluoride (SF6), a potent greenhouse gas, through voluntary, cost-effective technical and management solutions.

4

• SF6 is a human-made gas emitted from: • electrical transmission and distribution Sulfur equipment

Hexafluoride • manufacture of electronics / semiconductors

• production of magnesium

• SF6 lasts ~3,200 years in the atmosphere • SF6 has a high global warming potential

(GWP) compared to CO2 over 100-year time scale:

• 1 pound of SF6 = 11.4 tons of CO2 GWP

• SF6 GWP = 22,800a times CO2

a IPCC (2007) Climate Change 2007: The Physical Science Basis Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change.

5

About the Partnership

• Established in 1999 together with 45 Charter Partners

• Currently 90 Partner utilities representing approximately 50% of total U.S. grid transmission miles

• Total 2018 SF6 nameplate capacity of partners: over 11 million lbs.

• Creates opportunities for collaboration between utilities to discuss best practices to reduce SF6 emissions

6

SF6 Partnership Accomplishments 1999-2018

12,000,000 14%

10,000,000 12% ~ "' c:c::

10% V, C

V, 8,000,000

.J:> ....l

"'

0 ·.;;

8% .!!l E

L.L. 6,000,000 Vl LLI

"' 6%

L.L. Vl

4,000,000 4%

2,000,000 2%

0% 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

- Total Emissions (l bs) - Total Nameplat e Capacity (lbs) ~ Emission Rate(%)

Partnership Accomplishments

▪ Between 1999 and 2018:

▪ 78% decrease in SF6 emissions of Partners

▪ 88% decrease in emissions rate (emissions/nameplate capacity)

▪ Cumulative reductions of nearly 8 million lbs. of SF6 (compared to 1999 levels)

7

The SF i; Emission Reduction

Partnership for Electric Power Systems is an innovative voluntary program developed jointfy by the United States

Environmental Protection Agency (EPA) and the electric

power industry to improve

equipment reliability while reducing emissions of sulfur hexafluoride {SF,), a potent greenhouse gas that remains in the atmosphere for thousands of years.

&EPA

Overview of SF 6 Emissions Sources and Reduction Options in Electric Power Systems

August 2018

oEPA Reducing SF6 Emissions in Electric Power Systems: Best Industry Pract ices EP:.~ p¥1Tlered~ .,. • .,.1n·o-roa.1r· to•nutyQ~•~c ! al ~.,.. od ~~mg • .,.._ -.~tr■ ~'""°'"Pl- 1,t,1 ■>-i>•••nc•· _ ~1,mp1en,..,.,t.ng.an~I m..tp .-c. r~n,; Ut.L...- u■ to.,.,pn-pr.ac..cas,...-:img~~~Jr!IJ~~dp,'C'.-rnt.,

Q ..l

Establish lJleqclA! ,1ppro.dl !or SF, m,1n.111HMnl lltl"ou,gh ci,m~y polklH, pn,touls. and st.1nc1.1rc1 operatint prc<HurM,

t ...:..-E5tabllsh procedures lot I" Inventory, ut.oLffltlng, and tr&<kll'lt-

• -

lmplerM-nl teak de1eolon •nd rep.air strat~les.

~r•M e-qulpmenl to red11u SF, use and l:!-1..

- ......... ~ ........ ..,. ...... o-1wthe_l_., .. .....,.1--.. b-lr•IMl---.a,1 .. 1-.

DecommdslGn eqwpment properly .

Partnership Publications

Report: Overview of SF6 Emissions Sources and Reduction Options in Electric Power Systems

Overview Poster: Reducing SF6 Emissions in Electric Power Systems

All publication available online: https://www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership

8


Toward SF 6-Free High Voltage Circuit Breakers: Considerations for Adopting Vacuum Breaker and Fluorinated Gas Alternative Tet:hoologies

...,-............ JiN,11 ... .., """5'~-,..llff'IP'rtn,nhi,~ms},!o<tric-~-pt1-.oip..

lntrnd'uc;tJion

OYesthe tmst two dec•~ 4 the SF4 ElrmsKJni R~ucti:oo :~rtn.ershi,p for E~K: FD'w5 .syi,~ llS ,off.f::re<:I 1~ties a bt:fo".rm to wo:rl. to,;ettter t1> redu oe

emis:sKJns cd'sutl\a' h.enfloorid e tsf11],, e V?:ry pa tent geenl'Kluse: ~s-. The2 enorts inc:tooed adoptlkln and ~inatlioni oc·b est m ann.eemerrt pncb·ce.s s u::11, m o:re

n:cent1y~9:,plorat:km oi·attcrrr.rtNes,toSJr,.. h~M"..t!:in.dustryMs _dsuo:cu

wrtll 11Dft-.5F, ll~atn'es - low and mediurn mt~re: CuiP to 72.~ I.Y~ • ment;,. i,~W\'e 1'DI' hi;h \Ulm~ eq, ·pment lhsve pl"aweft m b-e man: llen~n.i;. l

Ke."111' higtu"ll tbiP=: non-5F11 ~s-ins te!l ll!I' !!!mative:s ~e ire::entl)' bemme m ore

pro.:.,i isin~ w ettr'Jy Br:l~n lb~.h in the Unite!I smtes anti :?abroad. UtJLn"es, ~ oonsi n.ew opTiom m ttleyst,l'V,le to m eet 1h.o9' o,wni wluntary commrt:,menb,.

fl:SP1Jldlto.st-?lte Dl' IDC· req ·n:m.ents~Dl'rM ~theirl~p· n;sfor

1:2:Comrnismc,nin.i; :ir:st i;-er. tioni SF1 beakers or older ·11ei:1 lbr~ers. T1u i:rommer. t summnri:e.s ~Ol'I l!!J.Dut le"( D~111:ives ftl r ihi,;tt VDO:a~ equ~ ment,. incD.ldin.i; rea:nt d e\~Jlmart:5 illKI poten tis'I consiefo511tians kl r

ad.o;p · ""·~ .frl:e iruulllt!ed equipment. 'Riis wo:rl. rc;p resents EPA'::S ja:nt wrtlllt\al!:iRdustryto,id~'lrlJ~o:ns,fm ~cti1,1 e SF1,-e mis-sia..nrel!'llcitioru.

Objec:tive

Tite focus O: this. ~ is oni two, romisini;: o;ptiaM to r,eplace hiG,11

" •a~ SF,. equi ment: 1!~ l!lltem.an',.ie v aw um circui't lbret1kerteC11nDJ(~Sies,~

and 2~ att ema!i1,1e fltJori '!E:d ~ mi:cnses . This docume rrt Ekles 11 0,,t cov.e r all att:er,n&twes or ?i:n ctun!:n; atT,eri:ni;: altl!r,na~ ta SF, • .. ,h 1,!0lta,i;e

l!(jUipment.. nor Imes i't .Sl9'Ye 1!15 ~n e-Kh al.lrtn'e bt Df current anid Mun!:

industry ~)ap..""Tll!llt:s dl.Je to the Elyll=iimCC n ature Df t his m;:iic. M entioo al'i' s;:i ecific comp=iinies, c,:r p roducts does. nm mnslbtuz enclo:r:sem ent by EPA ..

1i11til hdS:--.udrlc:p:wqdvu r!Kl,:ulyd•■.'bd ,1:Gn:1t1b:lftalalkNmj •• a11,pw.MSl l:al.J,.]O'Jlt:

•i.-~~-.:ih« • MNvn'Gt--..-: ...... H:H-I.OOD'K'.b ,1r.dlKl!ttunSOOl'I' • ~ lld!I.F~'tt.n . Dl"l l.rid.a;µal lhlMllm1Mn2J Mt.I •htn.-1 . ~.,.. ...... . . . 23i],Wl:d:laatt....~W • ~ Yah.l~•;.ualtaor.....,. •-l,K(l 'W

EJ,:me,a"..llba t..d~ 1pp:cad1Btad1m:JJ'.ril :Mr~r~]

•hr-n:fN,. e,Cal'lnl'.ii.U- llmDIXMli1.-d 1rd1lll1madulathDs;Et1!111d:ai!,l~ ,m.. hlci"lll'I~---:fl.t::qlH'fa'olnM nu,~ - •~sr. .. --,.•r.d ~ rw;p.lnn.anb,.~n:ltaac.-r. p-q;;=-ll .. iite,mt:.dtal'Dmilill pt-.CU:S,,..old·ttMb:al _..,_ c'.tlaalndl NSutH•"-r..,.:::rih,a .. ;,u .. n 1d1ftat:.,...-l2ci.-n'.:l::II l"lltiurb:1 ,__SF, a:mTIT.pl:l,:ti.

oEPA i

Partnership Publications

Moving Toward SF6-Free High Voltage Circuit Breakers: Considerations for Adopting Vacuum Breaker and Fluorinated Gas Alternative Technologies

Thank you Partner utilities and technology manufacturers for providing information for this report!

9

Terminal Pads

Bustiing

,cumlnt Transformer.a

_ Pressure Relief Device

Interrupter

Grounded Tank

Publication: Moving Toward SF6-Free High Voltage Circuit Breakers

Cutaway of an Interrupter Utilized in Vacuum Circuit Breaker Technology (Provided by Hitachi)

Schematic Diagram of Fluorinated Alternative Gas Circuit Breaker Technology (Provided by GE Grid Solutions)

What is covered:

• Technologies in focus: 1. Vacuum circuit breakers 2. Fluorinated gas alternative

technologies

• Properties of alternative mediums used in SF6-free technologies

• Considerations for technology adoption

o Capital costs o Operational and

maintenance (O&M) costs o Footprint o Standards for alternatives o On the grid piloting

• Example installations of medium & high voltage alternative equipment

10

Looking Ahead (2020-2021)

• Continue to focus on updating technical information and sharing best practices

• Update Partnership website with additional resources

• Looking forward to new ideas and collaborations

• Please get in touch at [email protected]

www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership

11


http://www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership

SF6 Free Alternative Medium & High-Voltage Circuit Breakers

Today’s 1. Alternative Technologies for Substation Gas Insulated Equipment: Agenda

It Can Be Done!

• Linus Farias and Brian Farmer (Pacific Gas & Electric)

2. Building the Future of Energy

• Julia Green and Neil Hutchins (Southern Company)

3. Circuit Breakers: Vacuum Technology

• Joseph Lookup and Kyle Supinski (PPL Electric Utilities)

12

Pacific Gas and Electric AGENDA: Alternative Technologies for Substation Gas Insulated SF6 Free Equipment: It Can Be Done! Alternative Linus Farias Brian Farmer Medium and High Voltage Circuit Breakers

13

Alternative Technologies for Substation

Gas Insulated Equipment: It Can Be Done!

Linus Farias Brian Farmer

September 14, 2020

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

We are focused on providing safe, reliable, clean and affordable natural gas and electricity to our customers.

Service Area •• Service area population •••70 000 SQUARE

•

• 16million CALIFORNIANS' MILES ••

• • (That's 1 in 20 Americans!)•••

• •••• NEARLY

24,000 ~ ,00,000+ ~··~: EMPLOYEES WHO : SOLAR ROOFTOPS ~ LIVE AND WORK • CONNECTED TO OUR GRID uJ

•in the communities we serve about 1 in 5 nationwide •

Our Motivation Mission & Vision

MISSION: To safely and reliably deliver affordable and clean energy toour customers and communities every single day, while building theenergy network of tomorrow.

VISION: With a sustainable energy future as our North Star, we will meet the challenge of climate change while providing affordable energy for all customers.

Actions • Million Ton Challenge

1MMT CO2e operational emissions reduction by 2022 • CARB 2021 Regulation: SF6 Phase-out mandates

Support California 2045 Carbon Neutrality Goal

~ 8-8

Million Ton Challenge: 2020 SF6 Actions

Repair or replace 20 circuit breakers with the highest SF6

leak rates

Reduce SF6 cylinder inventory by 33%: • Maintenance: 150 • Construction: 250

Test 72kV and 115kV SF6-free circuit breakers and 115kV Gas Insulated Switchgear

Amend PG&E’s Qualified Supplier List to remove all 72kV equipment that contains SF6

Develop Charter and Roadmap to eliminate SF6 use in equipment

History of California’s SF6 Regulations

2006 2008 2009 2009 2010 2011 2016 2017 2020+

AB32 Enacted AB32 Scoping Plan – Early Action Measures

SF6 Regulation: Eliminating niche uses of SF6 – Mg casting, fume hood testing, tracer testing

SF6 Regulation: Semiconductor Operation emissions limit

SF6 Regulation: Reducing SF6 emissions from Gas Insulated Switchgear

1% SF6 leak rate maximum by 2020

Reduction/ Elimination regulations implemented

2014: $383k in penalties for emissions exceedance

SB32 Enacted Proposed Amendment to phase out SF6 in Gas Insulated Switchgear

1% Maximum Annual SF6 Emissions limit; SF6 phase-out starting in 2025

CARB Regulations: Phasing out SF6 Use

2010 Regulation

• 1% maximum annual emissions rate starting in 2020

• Extensive Recordkeeping & Reporting

• Strict Enforcement provisions 8 enforcement actions

$10k - $254 Emissions exceedances Administrative errors

2020 Proposed Regulation

• Phase-out of SF6 GIE : 2025 – 2032

• 1% maximum annual leak limit Ratchet down to 0.95% in 2035+

• Early Action Credit for SF6 alternative GIE (installed prior to Phase-out dates)

• Case-by-case CARB exemption for SF6 GIE that cannot be phased out

SF6 Alternatives: Where are we Heading?

SF6 Phase-out Starting in 2025

Voltage (kV) Short-circuit Current (kA) Phase-out Date

38 < kV ≤ 145

< 63 January 1, 2025

> 63 January 1, 2028

145 < kV ≤ 245 < 63 January 1, 2027

> 63 January 1, 2031

> 245 ALL January 1, 2033

CARB proposed Regulation; July 21, 2020

Similar Schedule for Distribution GIE

SF6 Alternatives: How to turn the Ship?

Convincing Leaders & Stakeholders • Recognize the Risks & Opportunity

SF6: Highest known global warming potential (23,500) SF6: Environmental persistence (3,200 years) SF6: No available commercial waste gas management Dry-Air/Vacuum: Safe and reliable alternative

• Communicate the Value Initiate pilot projects and share findings with peer utilities Encourage other utilities & stakeholders to pursue alternatives,

create market need Support Supplier communication with Regulators

• Drive the Change Phase-out Charter and Roadmap Collaborate with GIE Suppliers Educate stakeholders: Leaders, Engineers, Project Managers Support CARB Regulation Support incentives: Fund pilot projects, Early Action Credit

SF6 Alternatives: Piloting alternatives

• Assess Substation Fleet* - SF6 (80%; 4,000 units) - Oil (20%/1,000 units) - VCB (0.1%; 15)

• Define Pathway to Introduce Alternatives - SF6 Phase-out Charter and Roadmap - Define Roles & Responsibilities

• Engage Strategic Sourcing - Request for Information Request for Proposal Vendor Selection

• Fund Pilot Projects without identified Capital projects

* Substation Fleet data are approximated

23

SF6 Alternatives: Supplier Selection & Evaluation

Dead Tank Circuit Breakers and Gas Insulated Switchgear

15 Suppliers Identified from world-wide as

potential candidates to

provide Gas Insulated HV

equipment

13 Suppliers Identified

capable of providing

≥ 70kV

10 Suppliers Invited to

RFI

7 Suppliers Submitting

response to RFI

Supplier Suppliers Submission

submitting RFI Evaluations based on ability to

GEmeet CA HICO requirements Hitachi for SF6 alternative MEPPI Siemens ABB Toshiba

Supplier Selections / Invitation to

Present

GE Siemens ABB Hitachi

Suppliers polled for

Suppliers interest identified with GIS & Breaker capabilities ≥

70kV

SF6 Alternatives: Work with OEMs, Regulators & Utilities • Frequent Communication & Exchange

Education & Advocacy Facilitate meetings with regulators Encourage other utilities to pilot alternatives

• Drivers and Challenges to Creating Change Utilities (Demand)

• Company policy • Identify capital projects to cover costs • Competing Priorities: Introducing significant change during Wildfire and Bankruptcy crises

OEMs/Suppliers (Product) • Corporate inertia • Market demand: Securing multiple orders • Competitive advantage concerns • High level of customer engagement: Adapting to new concept of Partnering with the Utility • Change Driver example: PG&E & Siemens share corporate Carbon goals

Regulators (CARB) • Establish a working relationship: CA Joint Utilities Group advocated changes: • Staff turnover • Agency priorities with other regulations

SF6 Alternatives: Phase-out Roadmap

Dead Tank Circuit Breakers Substation DTCB Order Date DTCB Delivery Date Comment

VARIOUS 50 Dry-Air ordered (Hitachi); 72.5 kV, up to 40kA; 15 installed to date

2017-2020

72.5 kV SF6 Breakers removed from supplier list

No technological problems with installations over past 3 years

Henrietta December 1, 2019 Dec 1, 2020 Dry-air (MEPPI) 72.5 kV, 31.5kA, 3 units

Livermore March 1, 2020 Jan 1, 2021 Dry-air (MEPPI) 72.5 kV, 31.5kA, 1 unit

Palo Alto July 1, 2018 June 1, 2021 Dry-air (Siemens); 145 kV, 40kA, 6 units

Santa Rosa February 1, 2020 June 1, 2021* Dry-air (Hitachi) 145 kV, 40kA, 3 units

To Be Identified November 1, 2020 December 31, 2022 145kV; 63kA, 3 units RFP: September 2020

* Potential delay due to COVID19 & commerce disruptions

SF6 Alternatives: Phase-out Roadmap

Gas Insulated Switchgear

Substation and Project ID GIS Order Date GIS Delivery Date Comment

Livermore 2019 October 2022 Dry-Air (Siemens) 8VN1 115 kV, 50 kA

Hunters Point March 1, 2020 2022 Dry-Air (Siemens) 115kV, 50kA GIS BAAH

Silicon Valley Switching Station 2022 2023 Dry-Air (TBD)

115 kV, 50 kA

Larkin 2024 2025 Dry-Air (TBD) 115 kV, 50 kA

SF6 Alternatives: Adopting a New Technology

Economic, Planning/Logistics, Technical & Operational

• Economic Capital vs Lifecycle Costs: 15-20% higher capital cost;

anticipate 20% lifecycle cost benefit Competing with off-the shelf (mature) products Competing Enterprise Priorities; Wildfire mitigation, Safety,

System resilience • Planning & Logistics

Obtain firm commitments to utilize new technology Removed 72.5 kV SF6 GIE from the QSL in 2019

Option to defer projects to accommodate new technology Unanticipated OEM manufacturing schedule changes:

COVID19, Tariffs

SF6 Alternatives: Adopting a New Technology

Economic, Planning/Logistics, Technical & Operational

• Technical Developing technical skills for maintenance technicians and

system engineers Technical limitations of Vacuum breakers (shunt capacitors

& shunt reactors) Design Standards: Dry-air vacuum are larger (10%) &

heavier (15%)

• Operational Adaptation OEM Training with pilot project installation Field Bulletin on commissioning non-SF6 GIE

Key to Adopting a New Technology

Motivation & Drivers for Change • Corporate Commitment • Public Expectations

• Clean, Sustainable & Carbon Neutral • Regulation

Driving Change • Planning: Charter & Roadmap • Communication: Engage stakeholders early and often

- Internal, Utility, Regulators, Suppliers • Change Management:

• Select projects with long lead times • Consider life-cycle project cost • Training for Operators • Monitor Progress

30 - INTERNAL

Thank You

Linus Farias [email protected]

Brian Farmer [email protected]



Southern Company AGENDA: Building the Future of Energy SF6 Free Alternative Julia Green Neil Hutchins Medium and High Voltage Circuit Breakers

31

>. Southern Company

Southern Company Building the Future of Energy

Julia Green Neil Hutchins

September 14, 2020

Service territories

■ Electric

■ Gas

Gas pipelines

- Southern Natural Gas

- Southern Company Gas

- Pipeline projects

Southern Power

0 Combined-cycle facility

(D Peaking facility

C, Biomass facility

8 Solar facility

8 Wind facility

Southern Company Gas

■ LNG facilities

ID Sequent Energy Management

lD SouthStar

ii Natural gas storage

Power Secure

0 Owned and managed sites per state

We Provide Clean, Safe, Reliable, Affordable Energy, Customized Solutions

Approximately

44,000 MW of Generating Capacity

Capabilities in

50 States

7 Electric & Natural

Gas Utilities

Approximately

29,000 Employees

9 Million Customers

33

34

Transmission - Natural Gas - Lines

- Nuclear - Transformers

- Coal - Towers

- Renewables

- Substations

- Energy

storage

> SELL/CONSUME

Residential Commercial Industrial

Wholesale : .. ... . ~

.... r.'.l. ······· ···w ................ . ... :a

KANSAS

........ w Wlnd fmllty"

1 Origis Solar Facility • Strata Solar Fadl t

Plant Daniel

SmlthDMn C,

.st.toah

on Dam heeD

TerroraDam

Tug

Plant 0 Yon Bowen O Morgan Falls Dam t;;;\

~ Plan GD Plant McDonough fD) Comer Sol

G, Falcons 1-3 G, UGA Fort Go 0 Neely 0 Plant MIiier Henry Dam Uoyd Shoals

Anniston Army Depot CD ant Yates O DMl1 C, C, Wallace DM11

C, Lopn Martin Da @m Plant Wansley Sinclair Dam Plant WIison

Bankhead Dam

0 Plant Gaston GD Holt Dam

Mitchell Dam

GD JordanDam

Plant Greene County Bouldin Dam C, @)Plant Harris

Lowndes County C, Cogen Fadllty

CD Washington County Cogen

G) La.Grange Solar 0 Plant Scherer

@ Plant Addison G)rri-County EMC

(D Plant Robins

4' Robins Sola~*uyton Community Solar G,

0 Plant Hatch

0 Flint River Plant I Sandhllls Solar Facility

Pawpaw Solar Facility

Butler Solar Facility Butler Solar Farm G) Marine Corps Logistics Base

G) Moody Solar*

so Decatur Parkway Solar Facility so Decatur Cou y-5olat Eadllty_.;.-----=-"""':"I

NEVADA NEW MEXICO TEXAS MAINE

-a- " .....

FaciMty

NORTH CAROLINA OKLAHOMA WASHINGTON

( COMPANY • APC • GPC • MPC • SPC • s~ c J "'Under development

June 2020

WEST VIRGINIA

Total Gen192

Electric Generating Facilities

2019 Total Generation Mix OTHER

9% COAL 22%

NUCLEAR 16%

HYDRO 3%

GAS 50%

II 11 II 11 II II II

: II

► ► ► ►

Journey To A Net Zero Carbon Future

Southern Company has established an intermediate goal of a 50% reduction in carbon emissions from 2007 levels by 2030, along with, a long-term goal of net zero operations by 2050.

GHG Emissions 2007 2019 2030 2050

Baseline Reduced 44% 50% Reduction Net Zero

35

Impact of SF6 Management

The How's

Reducing SF6 Footprint

Improving SF6 Controls and Process

Non SF6 Technology

Improving SF6 Amounts on Nameplates of SF6Equipment

Sharing Best Practices Across the Company and Industry

36

I

I J


Reducing SF6 Footprint

• Replace older and problematic SF6 Equipment • Integrate Vacuum Technology at 72.5 kV and

Below • Investigate Polymer/Composite Bushings for

SF6 Equipment

37

Impact of SF6 Management Non-SF6 Gas

• 38 kV & Less

Vacuum

Clean Air Vacuum

• 72.5 kV Currently • 115 kV Available 2021/2022 • 245 kV 2023/2024

Novec gas

• Limited Availability • Requires Specialized Equipment & Training

38


How to Drive Improvements with Manufacturers and

Industries

• Improve Nameplate Capacity of SF6Accuracy

• Improve Seal & Gasket Designs

• Set Expectations of Leak Free/LowLeak Rates from Approved Manufacturers

• Have a Plan for Integrating Non-SF6Equipment

39

I' I

.. I

, '

' ,


Sharing Best Practices Across the Company & Industry Increase Evaluation & Adoption of Newer Non-SF6 Technology Be Aware of HP Issues

• Non-SF6 Technology Equipment Looks Similar to SF6 Equipment • Training on New Technologies & Processing Requirements • Mixing SF6 & Non-SF6 Equipment in Same Facility • Fully Understand the Performance of Non-SF6 Equipment • Safety • Failure Modes of Non-SF6 Equipment • Testing & Investigation of Non-SF6 Equipment

40

PPL AGENDA: SF6 Sustainability & Alternatives SF6 Free PPL Electric Utilities Transmission & Substation Alternative Medium and Joseph Lookup Kyle Supinski High Voltage Circuit Breakers

41

A century of people powering life.

100 A century of people powering life.

SF6 Alternatives & Sustainability PPL Electric Utilities

Transmission & Substation

PPL El,IECTRIC UTILITIES SERVICE TERRITORY

w-<;r-e s

Northeast Region


PPL Electric Utilities by the numbers

• 1.4 million customers in 29 Pennsylvania counties • Over 50,000 miles of power lines • 10,000-square-mile service territory

We deliver electricity to all homes and businesses in our service area. • We don’t produce power at power plants. • We maintain and operate the delivery network – poles,

wires, transformers, etc.

4 4


Our Parent Company

• We’re a subsidiary of PPL Corporation • FORTUNE 500® utility company • Headquarters: Allentown, Pa. • Global employees: over 12,000 • Annual revenue: $7.8 billion • More than 10 million utility customer in US and U.K.

• PPL Corporation operates award-winning utility companies in Kentucky, Pennsylvania and the U.K.

• PPL Corporation no longer owns Pennsylvania power plants after spinning off those operations into a new company. We own regulated Generation in Kentucky.

4 5

in 41 Cl) co:

C)

! :Ii 0.

-'-> u ti 1,,,

a. ca: E

GAS CHEMICAL CO POSITION

G,AS NAME

Chem·cal fom,ula

CO2 - equiva.len (GWP) -~--- ~

Boiling Point (Celsius)

Dielectric Strength - - - -- --- -- -- -- - -

I Carrier gas

!CO2 - equivaitent (GWP)

Boiling Point (Celsius)

Dielectric Strength

Sulfurhexaflouride

SF6

23 900

-64

None, N2 or CF.

23,900

- 6 (variable)

Hydrofluoric acid, Decomposition products sulfur dioxide,

sulfur compounds

Dry-Air

0

< -183

0.43

0 < -183

0.43

:Only if failure: 1 ozone and i nitrogen oxides


Motivations Away from SF6

Environmental Concerns: • SF6 gas has 23,900 times the impact

of CO2 in the atmosphere

Environmental Benefits of Vacuum (Dry Air): • GWP (Global Warming Potential) = 0 • ODP (Ozone Depletion Potential) = 0 • Non-Toxic • Non-Flammable • No Gas exchange needed • Eliminate reporting/recycling

46

-

2

f

12-0

0

Aro · [kWs]

2:-0

E d r

C IJJ

4 00

El!reaiking cl!lne'flit k:A]


47

Reliability

• Excellent interrupting performance • Increased durability – for maximum operations • High reliability industry wide

• Elimination of decomposition products • Low temperature limits • No maintenance

Unit GAS (SF6) VACUUM Rated Maximum Voltage kV 72.5 72.5 Symmetrical Short Circuit Capability KA 40 40 Continuous Current Rating A Up to 3000 Up to 3000 BIL kV 350 350 Rated Interrupting Time Cycles 5 3 Permissible number of operations at full fault current Operations 10 40 Permissible number of open close operations at continuous current Operations 6000 10000

Proven Technology

• Existing Fleet of Oil, Gas, Vacuum • Previous Experience at Medium

Voltage (Distribution Class) • One OEM has had technology available

at 72.5kV DTCB since 2007

PPL EU Circuit Breaker Allocation by Type

Voltage Class Oil Gas (SF6) Vacuum


12kV 13.5% 1.24% 85.27%

4 8

Motivation Away from SF6

SF6 Vacuum Engineering Same Same

SF6 Handling

EPA /State Reporting

Training

Initial Capital Cost

Life of Service / Maintenance (Total Cost of Ownership)


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Pilots / Strategy

Partnering with 3-vendors will have available Vacuum Circuit Breaker Development

2020 Pilots and Beyond • 1st Vacuum CB on PPL EU Transmission

System in June 2020 • 1st at 72.5kV Vacuum in PA! • 2 installed to date , 1- more planned for Sep • 25 - VCB’s planned for 2021 at 72.5kV

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Collaboration with OEM

• Reliability Record • The OEM 69 kV VCB has been on the market since 2007 • Through July 2020, 860 units were installed or under contract in North America • Zero major failures have been recorded to date • One operational failure due to a loss of vacuum

MTBF (Mean Time Between Failure)

SF6 VCB

500 years/CB 6,289 years/CB

* from CIGRE and HTDS data

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Availability of VCB’s

• Proven Technology Medium Voltage Availability • Penetrating with multiple vendors at 72.5kV DTCB (2020/2021) • LTCB Vacuum availability ahead up to 145kV available for IEC markets • GIS – Utilizing alternatives and Dry Air • Alternative to SF6

• Availability for VCB DTCB’s: – 72.5kV: Available today – 115/145kV: 2021 to 2022 – 245kV: Tentative 2024 to 2025

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le e vi o me ta irnpac

CO2 EMISSION REDUCTION GOAL

%BY~MQ§vQ

o l a

co pro ss a cl a e e


Energy and Environmental Partnership

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Accountability & Program Management

SF6 Sustainability Program Principles

Accountability & Ownership

Centralized Gas Tracking

Centralized Ownership

Drive Accountability

Systemic Equipment

Tracking

Equipment Specific Records

& Losses

Investigation of All SF6 Losses Dashboard

Consistent & Prescribed

Action Data Driven

Actions

Targeted on Poor Performing

Equipment Measurable

Key Performance

Indicators Continuous

Improvement Vendor

Accountability Employee

Engagement

Continuous Field Improvement Ownership

SF6 Loss Event

Measure Event Performance Learning

Targeted Action

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I - I - _ -=" I -=- .__ _ _

....,,_ "'=' I=- ·- -----, - I -----, "'=" -- [ ·......,...,, · "="" -= ,,,___ - ·-=- - ....,,,., - - - ,----= ------, = ·= - . ........, ----, I-= - --,_ - I-=


0.0001

0.001

0.01

0.1

Driving Results Through Continuous Improvement

Benchmarking & Driving Results SF6 System Loss Rate %

Utility Best Practices Sharing & Peer Engagement 2015 2019 Key Performance Metrics 1.15% .23% - Pounds of SF6 System Lost 4th Quartile Top Decile - Leaks/Fills per Device - % SF6 Loss Rate

Commitment to Goals

1

1

10

100

1000

10000

100000

1000000

Poun

ds o

f SF6

On-

Syst

em (l

og sc

ale)

Industry SF6 Loss Rate (%) - EPA Reporting PPL Current Performance

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SF6 Free Alternative Medium and High Voltage Circuit Breakers: Vacuum Technology

Questions?

56

Thank you!

SF6 Emission Reduction Partnership for Electric Power Systems


[email protected]

Get involved – contact for opportunities to collaborate!

Volha Roshchanka [email protected]

202-343-9160

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