-28, 2017 static frequency converter sfc sfc sfc sfc sfc substation a substation b substation c...
TRANSCRIPT
, 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
~=
~=
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
er Sta
tion
Feed
er Sta
tion
Secti
oning
Cabin
Secti
oning
Cabin
Feed
er Sta
tion
Secti
oning
Cabin
C B A
C B AC B ASF
C
C B ASF
C
C B A
BCCA
Feed
er Sta
tion
Feed
er Sta
tion
Secti
oning
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
I
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Filte
r
1-phase25kV 50Hz
I
50 H
z 1ph
Inve
rter
1ph
trans
form
er
DC Li
nk
50 H
z 3ph
Activ
e re
ctifi
er
3ph
trans
form
er
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