Background of the LVDC discussion. Normalisation

Transcription

1 Background of the LVDC discussion 1

2 Content Data centres need for plugs and socket-outlets What about wiring rules, protective devices and other fixed installation material The broader picture Other evolutions 2

3 Data centres In 2006, CLC TC23BX received a request for a liaison from ETSI EE Question: to publish a standard for a 10A, 400V dc plug and socket-outlet system which also contains a 2,5A plug. CLC TC23BX created a WG (WG7) to deal with this. During one of the first meetings, TC23BX WG7 decided there is a need for more than a plug and socket-outlet system Wiring rules (TC64) Protective devices (SC23E) Swtiches 3

4 Data centres (2) CLC TC23BX informed IEC TC23 At the end of 2010, a first discussed draft on a plug and socket-outlet system was produced An agreement was reached to sent this to IEC TC23 for further evolution In the meantime, TC23 WG8 worked on general rules for accessories for DC circuits In the meantime, in the US a group called the DC power partners discussed the same issue now EMerge alliance 4

5 Today s LVDC demos in the World US Intel Corp. 400 VDC France Telecom 350 VDC Sweden UPN AB. 350 /380VDC Japan NTT Group 380/400 VDC US UCSD 380 VDC Japan Other Demos VDC US Validus 550 VDC New Zealand Telecom NZ 220 VDC 5 See document: SMB_SG4_SEC_037

6 The broader picture 6 In 2008, the SE NC submitted a request to start a Strategic Group on LVDC (see the introduction) The SG4 was created in 2009 In SG4 meetings, a lot of discussions on the reasons for using LVDC (reason for this workshop) In the SG4 the conclusion was drawn that if LVDC is interesting for data centres, LVDC could also have its benefits in large tertiary buildings especially those having UPS A lot of equipment sold for data centres are also used in large office buildings Electronic supplies for servers or other electronic equipment is very similar, if not the same

7 The broader picture (2) In further meetings of SG4, interest was shown by Lighting industry (TC34) Cable industry (TC20) Multimedia industry (TC100) Also interest was assumed from the household appliances (TC59) This evolution could bring LVDC to the household environment 7

8 Other evolutions Decentralised DC generation PV Fuel cells Small wind mills (DC) Utilities being more and more reluctant to buy electricity from its clients Smart grid Decentralized energy storage Electrical vehicles (EV) LVDC fast charging EV Batteries used for decentralized storage in the grid 8

9 DC self consumption as part of German renewable energy act VDC 9 Image: Fraunhofer ISE, Freiburg, Germany

10 Other evolutions (2) More and more linear loads (resistive) are being replaced by electronic loads E² - lighting (see presentation in one of the workshops) First step in an electronic supply (for e.g. A PC) is rectification, next steps can be done from a LVDC supply Emerging countries remote areas The product electricity is to be compared with telephony There is no integrated network, thus island solutions are in force Mobile telephony for telecom Island production and consumption for electricity (PV in dc, storage and then consumption) 10

11 PV island production and consumption Solar Home System PV-generator charge contoller 12 V consumers Central village supply 12 V battery PV generator charge regulator motor generator Battery charger V battery (inverter) village grid 11 Images: Fraunhofer ISE, Freiburg, Germany

12 Market tendency Commercial buildings 12

13 EMergeSystem: Ceiling Grid as a DC Power Highway DC Power Distribution through the Ceiling for New Construction & Renovation Nextek Power Server 1600w Infrastructure could be: Ceilings Walls Furniture Floors 13 SMB_SG4_SEC_040_Nextek

14 Market tendency Residential 14

15 AC/DC Hybrid wiring system for residential 15 Low-DC no outlet Low-DC with outlet High-DC Grid AC100V/200V AC Infrastructure Outlet Cooker Heater AC Distributor Solar System DC Distributor (with Converter) Switch Fan LED PC Fuel cell System DC-Outlet TEL FC Battery 15 See document SMB_SG4_SEC_016 High voltage DC-Outlet Air Conditioner Refrigerator

16 AV & Multimedia Systems and Equipment IEC (D1) IEC (D2) IEC (D7) IEC (D16) IEC (D10) Professional IEC (D11) IEC (HD-D5) IEC (D12) IEC (TV Metadata) IEC (ISDB) IEC (DVB) IEC (DVB-H) IEC (Loudspeaker) IEC IEC (e-book) IEC series (Cable system) IEC series (TV) IEC (Digital AV I/F) Consumer IEC (CD) IEC (PC audio) IEC (MD) IEC 60958, (Digital Audio I/F) IEC series (Audio System) IEC series (Radio) IEC series (Audio measurement) IEC (DVD player measurement) IEC 62318, (Multimedia IEC series Home server) IEC (IR) (DV format) IEC (DRM) IEC series (Color management) 16 See document SMB_SG4_SEC_042

17 DC Power Structure Facilitate Electric Vehicle Adoption DC Vehicle Charging: mode 4 17 SMB_SG4_SEC_040_Nextek

18 Thank you 18