ABB ABB SpA Power Products SF6 Instrument Transformers. ABB Group October 18, 2012 Slide 1
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1 ABB ABB SpA Power Products SF6 Instrument Transformers October 18, 2012 Slide 1
2 Introduction ABB S.p.A Power Products Division Unità Operativa Adda-HV ABB S.p.A Power Products Division Unità Operativa Adda-HV October 18, 2012 Slide 2
3 Introduction ABB ADDA History Line (1/2) Established in 1926 High Voltage Technology since 80 years Production of oil-insulated Current Transformers for more than 50 years Long & Strong Experience GIS technology since 1974 Production of SF6 stand alone Current Transformers since 1981 October 18, 2012 Slide 3
4 Introduction ABB ADDA History Line (2/2) Late 90s Pioneering Spirit First in the world to conceive Hybrid Switchgears New Focus Factory 2005 Worldwide success New Focus Factory October 18, 2012 Slide 4
5 SF 6 Instrument Transformers Product portfolio TG TVI TIP TG COMBI Voltage [kv] Up to 800kV Up to 420kV Up to 550kV / 500 kva Up to 245kV Type SF 6 Current Transformer SF 6 Voltage Transformer SF 6 Substation Service Voltage Transformer SF 6 COMBIned Current and Voltage Transformer October 18, 2012 Slide 5
6 TG strengths SF 6 insulation advantages Explosion proof design: a pressure relief device protects the apparatus from internal overpressure. Non flammable gas insulation. Life time dielectric quality assured (no checks, no treatment). Total absence of partial discharges. Oil filling and periodical oil samplings are not required. Gas leakage < 0.1% a year. Remote control of the internal insulation level by means pressure gauge provided with an alarm threshold and lock threshold. Totally maintenance free. October 18, 2012 Slide 6
7 TG strengths SF 6 insulation advantages Explosion proof design: a pressure relief device protects the apparatus from internal overpressure. Non flammable gas insulation. October 18, 2012 Slide 7 Life time dielectric quality assured (no checks, no treatment). Total absence of partial discharges. Oil filling and periodical oil samplings are not required. Gas leakage < 0.1% a year. Remote control of the internal insulation level by means pressure gauge provided with an alarm threshold and lock threshold. Totally maintenance free. Fire and Explosion Failure Frequency
8 TG strengths SF 6 insulation advantages Explosion proof design: a pressure relief device protects the apparatus from internal overpressure. Non flammable gas insulation. Life time dielectric quality assured (no checks, no treatment). Total absence of partial discharges. Oil filling and periodical oil samplings are not required. Gas leakage < 0.1% a year. Remote control of the internal insulation level by means pressure gauge provided with an alarm threshold and lock threshold. Totally maintenance free. October 18, 2012 Slide 8
9 TG SF6 Stand Alone Current Transformers October 18, 2012 Slide 9
10 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 10
11 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 11
12 Introduction The modularity of TG design (i.e. several tank sizes, different type of primary windings, makes it possible to meet most of our client requests). HV installation fully obtained by means SF6 gas instead of oil & paper. Cores and primary re-connections positioned inside and around the top head respectively. Fibre glass insulator with silicon rubber shields (porcelain available as alternative) October 18, 2012 Slide 12
13 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability Reference list. October 18, 2012 Slide 13
14 Basic Technical data System voltages: 72.5kV 800kV Insulation level: up to 2100kV Rated primary current: 4.000A Rated short-circuit current: thermal: up to 63kA; dynamic: up to 170kA. Rated secondary current: 1 or 5 Accuracy: according to IEC and IEEE Ambient temperature: -50C - +40C October 18, 2012 Slide 14
15 Basic technical data Selection view Primary turns Aluminium alloy head. 3. Terminals. 4. Insulator Pressure relief device. 6. Densimeter SF6 gas filling gauge. 8. Earthing screw. 9. Low voltage cable entry. 10. Secondary terminal block. 9 8 October 18, 2012 Slide 15
16 Table of contents Introduction Technical data Basic technical data. Product range (silicon porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 16
17 TG SF6 Current Transformers Product range System voltages: 72.5kV 800kV Insulation level: up to 2100kV Rated primary current: 4.000A Rated short-circuit current: thermal: up to 63kA; dynamic: up to 170kA. Accuracy: according to IEC and IEEE TG 72.5kV TG kV TG 245kV TG 362kV TG 420kV TG 550kV TG 800kV October 18, 2012 Slide 17
18 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 18
19 TG building blocks Head: Special light alloy (total absence of porosity, i.e. total sealing of the SF6) The head contains: passing bar primary winding toroidal cores (hot rolled steel strip or mumetal or mix) secondary windings uniformly distributed around cores internal shields to optimise the distribution of dielectric field Insulator: High strength silicon (or porcelain) conforming with the strictest mechanical requirements (ANSI/CENELEC/ ) Aluminium Base: Functions: supports the live part of the CT (with a tube) closes the bottom of the insulator connects the secondary terminal box October 18, 2012 Slide 19
20 TG building blocks The primary Advantages Short primary conductor with low thermal losses High rated current and short-time current October 18, 2012 Slide 20
21 TG building blocks The head Tap changer Rupture disk October 18, 2012 Slide 21 Internal shield Double O-Ring
22 TG building blocks Materials (1/2) Hot dip galvanised components. Epoxy paint protection for other parts in anticorrosive light alloy. Synthetic rubber gasket fit to resist SF 6 and thermal variation. The metallic head is cast in a special light alloy to assure absence of porosity (complete sealing of SF 6 ). High strength composite or porcelain insulator conforming to the strictest requirements (ANSI/CENELEC). October 18, 2012 Slide 22
23 TG building blocks Materials (2/2) ADVANTAGES OF SILICON RUBBER low weight excellent pollution and rain performance sandstorm resistant maintenance free cheaper than porcelain (in most cases) high degree of safety (crack and explosion resistant) October 18, 2012 Slide 23
24 TG building blocks Base Density monitor Secondary terminal box DILO valve for filling October 18, 2012 Slide 24
25 TG building blocks Cores Primary/secondary reconnections. Different possibilities in the number of cores. Metering/protection cores. Burden & Class example: cl. 0.2, 20 VA, FS 5; cl. 5P20, 30 VA; TPX, TPY and TPZ are available. Rated continuous thermal current (Rf): 1.0, 1.2, 1.5, (IEC). October 18, 2012 Slide 25
26 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator) TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 26
27 Packing Different solutions to ensure the safety of the equipment during transportation Wooden crate Shock Indicators Barrier bag Metallic structure with anti-vibration rubber supports October 18, 2012 Slide 27 Shock Recorders
28 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability Reference list. October 18, 2012 Slide 28
29 TG quality Leverage on other SF 6 insulated HV equipment manufacturing know-how (AIS, GIS, Hybrid). Extensive in-house tests (special dedicated testing room). Integrated system for the management of quality ISO quality certifications. October 18, 2012 Slide 29
30 TG quality HV test laboratory October 18, 2012 Slide 30
31 TG quality Integrated system for the management of quality Inbound Control Process Control Testing Outbound Control Activities: Activities: Activities: Activities: Supplier Qualification Process Supplier Performance monitoring (Audits ) Incoming Inspection Statistical Process Control Analysis of defects Feedback to R&D on technical gaps Definition of procedures for assembling and testing activities Definition of operators checklists Monitoring of compliancy with procedures Defects monitoring and analysis Feedback to R&D on technical gaps Visual checks Functional tests Mechanical tests Leakage tests Dielectric tests Visual check e completeness of delivery Monitoring of packing adequacy Customer Claim Management (CCRP) Quality Reporting Improvement projects Training Weekly quality meetings on shopfloor Improvement projects October 18, 2012 Slide 31
32 TG quality ABB Adda ISO quality certifications 2008: ISO (OHS) 2004: ISO (Environment) 2002: ISO 9001 (Quality) October 18, 2012 Slide 32
33 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 33
34 TG Reliability DESIGN PRODUCTION TESTING Designed, manufactured and tested to have the best performances in the market of CTs October 18, 2012 Slide 34
35 TG Reliability Dielectric strength TG 245 under test October 18, 2012 Slide 35
36 TG Reliability Dielectric strength TG 420 under test October 18, 2012 Slide 36
37 TG Reliability Mechanical strength!"##!"## $%&'%"! "#(#"! &%"! ) ) ) TG 145: Vertical Load October 18, 2012 Slide 37
38 TG Reliability Mechanical strength!"##!"## $%&'%"! "#(#"! &%"! * ) ) ) TG 245: Transversal Load October 18, 2012 Slide 38
39 TG Reliability Mechanical strength!"##!"## $%&'%"! "#(#"! &%"! ) ) ) TG 420: Longitudinal Load October 18, 2012 Slide 39
40 TG Reliability Special Type Tests Arcing due to internal fault (class II) Seismic test Tightness test (-50 C) Lightning Impulse Chopped Wave Dielectric Type Tests performed with gas mixture (SF6/N2) October 18, 2012 Slide 40
41 TG Reliability Internal arc test Video October 18, 2012 Slide 41
42 TG Reliability Seismic test TG 420 TG 145 Video October 18, 2012 Slide 42 TG 245
43 Table of contents Introduction Technical data Basic technical data. Product range (silicon - porcelain insulator). TG building blocks Packing. TG strengths SF6 insulation advantages TG quality. TG reliability. Reference list. October 18, 2012 Slide 43
44 TG SF6 Current Transformers Reference countries for SF6 MORE THAN INSTALLATIONS Market features: Customers turning to SF6 Demanding customers High rated voltage High rated current Short-time delivery October 18, 2012 Slide 44
45 TG SF6 Current Transformers Reference countries for SF6 TG reference customers: Terna (Italy) Hydro Québec (Canada) Eskom (South Africa) Energoatom (Russia) Ukrenergo (Ukraine) TransGrid (Australia) October 18, 2012 Slide 45
46
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