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SF6 Free Alternative Medium and High Voltage Circuit Breakers: Vacuum
Technology
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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
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• This webinar is being recorded.
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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.
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• 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.
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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
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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)
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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
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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
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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
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•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!
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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
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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
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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)
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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
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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
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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
Southern Company AGENDA: Building the Future of Energy SF6 Free Alternative Julia Green Neil Hutchins Medium and High Voltage Circuit Breakers
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>. 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
Impact of SF6 Management
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
Impact of SF6 Management
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
, '
' ,
Impact of SF6 Management
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
A century of people powering life.
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
100 A century of people powering life.
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
A century of people powering life.
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]
A century of people powering life.
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
100 A century of people powering life.
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)
A century of people powering life.
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100 A century of people powering life.
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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100 A century of people powering life.
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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100 A century of people powering life.
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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CO2 EMISSION REDUCTION GOAL
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o l a
co pro ss a cl a e e
A century of people powering life.
Energy and Environmental Partnership
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100 A century of people powering life.
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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100 A century of people powering life.
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
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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?
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Thank you!
SF6 Emission Reduction Partnership for Electric Power Systems
https://www.epa.gov/f-gas-partnership-programs/electric-power-systems-partnership
Get involved – contact for opportunities to collaborate!
Volha Roshchanka [email protected]
202-343-9160
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