Innovation on Medium Voltage Switchgear

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1 Bruno Rivas, Guarulhos - Brazil, April 2015 Jornadas Técnicas de ABB en Perú Innovation on Medium Voltage Switchgear May 5, 2015 Slide 1

2 Application 5. Mai 2015 Slide 2

3 Unigear ZS1 Design concepts: Single Busbar System Back to Back System Double Level System May 5, 2015 Slide 3

4 Unigear ZS1 Single Busbar System May 5, 2015 Slide 4

5 Unigear ZS1 Single Busbar System Electrical characteristics Rated voltage Test voltage (50-60 Hz/1 min) Impulse withstand voltage Rated frequency Rated short-time withstand current Peak withstand current Internal arc withstand current Rated current of the main busbars Rated circuit-breaker thermal current Feeders rated current [kv] [kv] [kv] [Hz] [ka] [ka] [ka] [A] [A] [A] Up to Up to Up to Up to Up to (*) , , , May 5, 2015 Slide 5

6 R L Unigear ZS1 Single Busbar System May 5, 2015 Slide 6

7 Unigear ZS1 Double Busbar System Double Level; Double Level Duplex. May 5, 2015 Slide 7

8 Unigear ZS1 Double Busbar System Electrical characteristics Rated voltage Test voltage (50-60 Hz/1 min) Impulse withstand voltage Rated frequency Rated short-time withstand current Peak withstand current Internal arc withstand current Rated current of the main busbars Rated current branch connection [kv] [kv] [kv] [Hz] [ka] [ka] [ka] [A] [A] Up to Up to Up to Up to 7, , May 5, 2015 Slide 8

9 R L R L Unigear ZS1 Double Busbar System May 5, 2015 Slide 9

10 R L Unigear ZS1 Double Busbar System May 5, 2015 Slide 10

11 R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L Unigear ZS1 Double Busbar System Metering unit Metering unit Outgoing feeders with circuit breakers Outgoing feeders with contactors Incoming feeder Bus tie Bus riser Incoming feeder Outgoing feeders with contactors Outgoing feeders with circuit breakers Earthing transformer outgoing Earthing transformer outgoing May 5, 2015 Slide 11

12 Unigear ZS1 Back to Back System May 5, 2015 Slide 12

13 Unigear ZS1 Back to Back System Electrical characteristics Rated voltage Test voltage (50-60 Hz/1 min) Impulse withstand voltage Rated frequency Rated short-time withstand current Peak withstand current Internal arc withstand current Rated current of the main busbars Rated circuit-breaker thermal current Feeders rated current [kv] [kv] [kv] [Hz] [ka] [ka] [ka] [A] [A] [A] Up to Up to Up to Up to Up to (*) , , May 5, 2015 Slide 13

14 Unigear ZS1 Back to Back System May 5, 2015 Slide 14

15 Safety 5. Mai 2015 Slide 15

16 Safety ABB Month DD, YYYY Slide 16

17 Safety The most complete range Complies with IEC Standards; GOST (Russia); GB (China) as well as main Shipping Registers Regulations Type tested Fully type tested according to IEC standard; Additional tests performed in compliance with shipping registers regulations; Specifically tested to be in compliance with several local requirements (e.g. GOST and GB); Seismic: IEC (IEC / ), IEEE standards (IEEE Std ) and ETG-1020 (by calculation). Inclination test Vibration test May 5, 2015 Slide 17

18 Safety PM (partition metallic) and LSC2B (Busbar, feeder and apparatus compartments physically and electrically segregated) classified according the IEC ; Complete of safety mechanical interlocks (interlock-controlled or tool-based accessible compartments); Metallic shutters operated by the apparatus movement; Closed door apparatus racking. May 5, 2015 Slide 18

19 Safety Earthing switch With full making capacity short time withstand current for 3 seconds; Operated from the front; Provided with secure position indicators; Motor operated drive mechanism available. May 5, 2015 Slide 19

20 May 5, 2015 Slide 20

21 Safety Internal arc classified IAC AFLR according to the IEC Annex A UniGear is in full accordance to all the five criteria: 1. The doors of the switchboard must remain closed and no opening of the cover panels must occur; 2. Any part of the switchboard which may be hazardous for personnel must not be ejected; 3. No holes must appear in the external housing of the switchboard in any parts accessible to personnel; 4. The vertically and horizontally arranged fabric indicators placed outside the switchboard must not get burnt; 5. All the switchboard earthing connections must remain effective. Front, rear and sides arc resistance. May 5, 2015 Slide 21

22 Safety Arc proof Internal arc classified IAC AFLR according to the new IEC Annex A; Front, rear and sides arc resistance. May 5, 2015 Slide 22

23 Safety Wall standing solution Maintenance and service operations performed from the front; Front access to all the compartments (apparatus, busbars, cables); Comfortable front cables access. May 5, 2015 Slide 23

24 Safety ABB Month DD, 2015 Slide 24

25 Remote racking ABB Month DD, YYYY Slide 25

26 IR Temperature Monitoring Faulty connections due to loose screws or corrosion Increase of the contact resistance Conversion of the power to heat Damage of the switchgear Prevention by contactless temperature monitoring of the contact points with IR sensors Busbars / points of contact May 5, 2015 Slide 26

27 IR Temperature Monitoring Medium Voltage Switchgear May 5, 2015 Slide 27

28 IR Temperature Monitoring MV-cubicle Busbar / Cable conexion IR Power supply: Modbus / Profbus 24 VDC PLC Binary outputs Temperature probes Sensor IR temperature probes Temperature monitoring of up to 12 points without contacting any live parts Measurement of the ambient temperature in the cubicle with sensor May 5, 2015 Slide 28

29 IR Temperature Monitoring Fast detection of the presence of a hot spot in an early stage Increasing of plant safety No additional checks of the contact points necessary Decreasing of costs Passive type temperature sensors Retrofit in most existing MV-cubicles (e.g. in the cubicle s front door) May 5, 2015 Slide 29

30 Safety ABB Month DD, YYYY Slide 30

31 Gas exhaust duct Overpressure flaps May 5, 2015 Slide 31

32 Gas exhaust duct Without extra measures May 5, 2015 Slide 32

33 Gas exhaust duct Standard duct 3m B < 3.5m Compact duct 2.8m B < 3m May 5, 2015 Slide 33

34 Gas exhaust duct May 5, 2015 Slide 34

35 Gas exhaust duct Compact duct with top chimneys 2.8m B < 3m May 5, 2015 Slide 35

36 Arc Detection ITH ü 15 ms ITH + 60 ms CB REA ü 2,5 ms + 60 ms CB IED ü 12 ms IED + 60 ms CB UFES ü < 4 ms after detection of an internal arc fault May 5, 2015 Slide 36

37 Arc Protection - ITH Ith pressure switches ü Easy to use ü Fast and reliable ü Economic solution

38 Arc Protection - REA 3 Trip REA 101 REA 101 Trip 3 Trip 1 Trip 2 Light I> I> REA 103 REA 105 Trip 1 Trip 2 Example Sectionalizing of outgoing feeders REA 105 on the second outgoing level trips the feeder CB on detection of an arc The upstream REA 105 trips the sectionalizing CB after a preset delay if the arc has not been eliminated The two REA 101 units trip the incoming feeder CBs if the arc fault still persists May 5, 2015 Slide 38

39 Arc Protection - IED Relion 615 & 620 (optional) Per compartment (CB, Busbar, Cables) Economic solution May 5, 2015 Slide 39

40 Arc Protection - UFES + UFES + REA Versatile monitoring options with REA system: Optical detection via line or lens sensors Overcurrent detection Selective protection Circuit-breaker failure protection Ultra-fast arc extinction by UFES Certified interfaces Extremely short tripping times < 4 ms (after detection) Combinable arc protection UFES + REA May 5, 2015 Slide 40

41 Arc Protection - UFES

42 UniGear Digital Available product 5. Mai 2015 Slide 42

43 UniGear Digital Overview May 5, 2015 Slide 43

44 UniGear Digital Overview Current sensor Shielded cable with RJ45 Protection relay Adapter Voltage sensor May 5, 2015 Slide 44

45 UniGear Digital Overview Protection relay with IEC Current sensors Voltage sensors 1pcs 0.5kg 1pcs 2kg May 5, 2015 Slide 45

46 UniGear Digital Overview Keep project time schedule Comply with specifications and standards Keep cost targets Maximize integration Flexible to changes May 5, 2015 Slide 46

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