-28, 2017 Static Frequency Converter sfc sfc sfc sfc sfc Substation A Substation B Substation C Switch circuit “close” Switch circuit “open” Neutral zone “seperated” Neutral

, OCTOBER 27-28, 20 17

St at ic Frequency Convert er Int erna t iona l Conference onGREEN INITIATIVES & RAILWAY ELECTRIFICATION Hot e l Le Merid ien, New DelhiArunav Kum ar Jha , ABB FACTS

Convent ional Feeding syst em St a t ic Freq uency Convert er

− SFC Feed ing concep t

− Ad vant ag es over convent iona l feed ing concep t

− Para lle l Feed ing and ad vant ag es

− SFC Benefit s Sum m ary

ABB references fo r 50 Hz and 16.7 Hz

Pro ject Wulkuraka 50 Hz reference

− Schem at ics

− Foot p rint

− Sit e Ob s erva t ions

Novem b er 7, 20 17 Slid e 2

Agenda

Typical Railway Power Supply Connect ion 25 KV, 50Hz

Convent ional Feeding Syst em

Novem b er 7, 20 17 Slid e 3

Sim p le so lut ion b ut wit h d rawb acks– Neut ra l s ect ions d ue t o connect ion t o d iffe rent

e lect rica l p hases– Non op t im a l ca t ena ry vo lt ag e – Hig h ca t ena ry short circuit current– Power flow cannot b e cont ro lled and

reg enera t ive energ y cannot b e cap t ured in t he sys t em

– Hig her p eak d em and s , lower overa ll t ract ion sys t em efficiency

– Unb a lance e ffect on p ub lic g rid– Hig h ha rm onics inject ed int o sup p ly g rid from

t ract ion vehicles– Hig h vo lt ag e fluct ua t ions in feed ing g rid s

caused b y fluct ua t ions o f ra ilway load s– Need fo r react ive p ower com p ensa t ion

eq uipm ent fo r fulfilling Grid cod e req uirem ent s

– St a t ic Freq uency Convert e r Decoup les Elect rica lly t he t wo g rid s– Act ive Power cannot b e s t o red , b ut can b e cont ro lled– Freq uency , Volt ag e & React ive Power can b e cont ro lled on b o t h convert e r s id es

SFC Feed ing Concep t

St at ic Frequency Convert er (SFC)

Novem b er 7, 20 17 Slid e 4

Int roduct ion t o f requency convert er

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P

U1Q1f1

U2Q2f2

PU1Q1f1

U2Q2f2

V1 V2

SFC Feeding Syst em Connect ion 50Hz

SFC feeding syst em & Convent ional Feeding Syst em

Novem b er 7, 20 17 Slid e 5

Key b enefit s – No Neut ra l zone , cont inuous p ower feed ing t o

t ra in– Para lle l & synchronized feed ing , increased

ava ilab ilit y – Ca t ena ry vo lt ag e im p rovem ent s , increased

t o rq ue cap ab ilit y– Im p roved corrid or p erfo rm ance , hig her overa ll

sys t em efficiency– Op t im ized use o f reg enera t ive b reaking– Red uct ion o f p eak d em and– Excellent short circuit b ehavior, low fault

current cont rib ut ion– Fully b a lanced load , a t d es ired p ower

fact o r, low ha rm onic cont rib ut ion

SFC Feeding Concept :Parallel Feeding 1/ 2

St at ic Frequency Convert er (SFC)

Op t im ized Use o f Reg enera t ive Breaking Energ y

C B A

C B A

BCCAABABABAB AB

Feed

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Feed

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tion

Secti

oning

Cabin

Secti

oning

Cabin

Feed

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tion

Secti

oning

Cabin

C B A

C B AC B ASF

C

C B ASF

C

C B A

BCCA

Feed

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Feed

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Secti

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Cabin

C B A

kV

Load dependent voltage fluctuation

Excellent line voltage regulation

Wider capture of regenerative braking

St at ic Frequency Convert er (SFC)SFC Feeding Concept Parallel Feeding 2/ 2

Power s up p ly s cenario

Railway syst em simulat ion

Substation A Substation B Substation C

SFC SFC SFC SFC SFC SFC

Substation A Substation B Substation C

Substation A Substation B Substation C

SFC SFC SFC SFC SFC SFC

Substation A Substation B Substation C

Neutral zone “seperated” Neutral zone “connected”Switch circuit “open”Switch circuit “close”

Normal supply scenario Degraded supply scenario

• Wit h SFC No neut ra l zone

• Sm oot h t ake over from o t her connect ed SFCs in cas e o f any s ub s t a t ion d own

• Sm oot h and s ynchronized re -connect ion as s oon as Fault y s ub s t a t ion b ack in op era t ion

Benef it s of convert er based railway power supply syst em

• Longer feeding distance reachable

• Reduced act ive power consumpt ion

• Improved fault behavior

• Reduced catenary short circuit current

• Excellent fault ride t hrough behavior (both sides)

• Cont inuous stable operat ion during grid single phase fault

• Catenary volt age support during 3ph grid failure

• Improved power capabilit ies wit h act ive catenary volt age cont rol

• Advanced test funct ionalit y for rolling stocks and catenary lines

• No harmonics ef fect f rom OHL toward 50 Hz grid

• Improved system ef f iciency achievable

Technical aspect s

Reference list of ABB SFCs

ABB’s Expereince wit h SFC Technology Delivery

Novem b er 7, 20 17 Slid e 10

• Larg es t ins t a lled b ase / m ore t han 40unit s in s e rvice , m ore t han 1.2 GW SFC ins t a lled p ower

• More t han 20 yea rs o f exp erience in ap p lica t ions fo r ra il p ower sup p ly

• Proven cont ro l and p ro t ect ion a lg orit hm s fo r 50 Hz and 16 Hz

• Sa t is fies hig h re liab ilit y and ava ilab ilit y d em and s

• For 50 Hz:• Wulkuraka , Queens land Ra il, AU

1x 16MVA, com m iss ioned in 2016

• Pot t e ric Car, Net work Ra il, UK award ed in May 2017, 1x42 MVA

Tit le

PCS6000 16Hz ReferencesKalix 2x19MVA St avang er 2x17MVARud s hög d a 1x15MVAAlnab ru 2x15MVAHolm lia 1x15MVALarvik 1x15MVANeum üns t er 2x35MVALüb eck 2x19MVABrem en III 1x40 MVABrem en II 1x80 MVADat t e ln 4x120 MVAWolkram s haus en

2x19MVADob erlug 2x19MVADüs s eld orf 1x19MVAHof 2x15MVALim b urg 8x19MVANeckarwes t heim

2x75MVATim elkam 2x37MVALand q uart 1x20 MVABever 1x20 MVAOb erm at t 1x10 MVAWim m is 4x21MVA

First 50 HZ reference in UK: Pot t ericCar

Reference project Wulkuraka

Convert er single line diagram

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3-Phase110kV 50Hz

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Reference project Wulkuraka, Queensland Rail

Cust omer needsBrisbane – Rosewood lineIncreased energy demand on t he t racknew rolling st ock maintenance depot nearby25 kV 50 Hz substat ion wit hout unbalance ef fect s

ABB ResponseTurnkey solut ion incl. 20 MVA Stat ic f requency convert er incl. control, transformers, switchgears, cooling, filters, installation and commissioning110 kV 50 Hz 3p h ↔ 25 kV, 50 Hz 1-Ph

Cust omer’s benef it sStronger railway corridor performance

Int rod uct ion

Reference project Wulkuraka, Queensland Rail

Layout 30m x 20m

Reference project Wulkuraka

Inst allat ion on sit e

50:50 Hz Wulkuraka Queensland Rail

ABB’s experience wit h SFC Technology

Novem b er 7, 20 17 Slid e 15

Firs t Leve l– Second Level

• Third Leve l• Fourt h Leve l• Fift h Leve l

Peak d em and red uct ion

Measured b y cus t om er @ Wulkuraka in 2016Scop e is t o corrid or p erfo rm ance Red uced energ y b illingsUse will enhance furt her on when new flee t is in op era t ion p rod ucing m ore reg enera t ive energ y

Peak Demand20% reduct ion

Wulkuraka SFC

Corinda Tx

Corridor