Use of Advanced Solutions for UHV Transmission

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1 More Power out of the Grid plus CO 2 Reduction Use of Advanced Solutions for UHV Transmission PTD H 1 MT/Re

2 Advanced Power Transmission Systems HVDC - High Voltage DC Transmission: HVDC Classic with LT Thyristors* (Line-commutated Converter) HVDC Bulk with 800 kv for 5,000 MW to > 6,400 MW HVDC PLUS (Voltage-Sourced Converter VSC) HVDC can be combined with FACTS V-Control included B2B -The Short Link 800 kv for minimal Line Transmission Losses HVDC-LDT - Long Distance Transmission Back-to-Back Station Submarine Cable Transmission Long Distance OHL Transmission AC AC AC AC AC AC DC Cable DC Line * LTT = Light-Triggered Thyristor with integrated Break-over Protection PTD H 1 MT/Re

3 Benefits of HVDC: it makes Power flow Fault-Current Blocking G ~ I1 V1 P V2 I2 G ~ Slow Functions Q1 α and γ Q2 Slow Functions L and C Benefits of HVDC in a synchronous AC System Fast Functions Power & Voltage Control Fault-Current Blocking L and C The Firewall for Blackout Prevention PTD H 1 MT/Re

4 Prospects of UHV DC & UHV AC Some Countries will need Bulk Power Transmission Corridors Solutions: 800 kv DC & 1,000 kv AC DC: 4-6 GW AC: 6-10 GW Increase in Transmission Distance and Reduction in Losses PTD H 1 MT/Re PTD H 1 MT/Re

5 Example China: Long Distances between Generation and Load Centers (500 ~ 2,000 km) Northeast China Northwest China North China Coal Tibet Central China East China Hydro Load center South China Taiwan Source: State Grid of China PTD H 1 MT/Re

6 The Solution: AC & DC Power Transmission from West to East Three Bulk Power Transmission Corridors Transmission Capacity of each Corridor will be 20 GW by 2020 North Corridor the installed Generation Capacity will be 900 GW 3 x 20 GW 800 kv DC & 1,000 kv AC Sources: Central Corridor South Corridor PTD H 1 MT/Re

7 China will use UVH AC Transmission... Bundle of 8 Conductors and possibly India will follow! Rated Voltage: 1,000 kv Maximum Operation Voltage: 1,100 kv Source: 1,000 kv Test Line in China PTD H 1 MT/Re

8 UVH DC Test Line put into Service on June 28, 2007 in Changping District, Beijing, China. Rated Voltage: ± 800 kv Maximum Source Voltage: ± 1,200 kv / 0.5 A Sources: Total Length of Test Line: 1,084 m 80 m Tower 88 m Span of middle Section: 300 m PTD H 1 MT/Re

9 China Southern Power Grid - Prospects of Grid Developments CSG: Five Provinces By 2010, West-East Power Transfer will increase from 11.5 GW to 13.5 GW By 2010, the Transmission Capacity from West to East will increase to GW 1 million km million People By 2009, the first ± 800kV DC Transmission Project in the World will be launched by China Southern Power Grid By 2010, a large Corridor with 5 DC Lines and 8 AC Lines will be formed Source: Brazil-India-China Summit Meeting on HVDC & Hybrid Systems Planning and Engineering Issues, July 2006, Rio de Janeiro, Brazil PTD H 1 MT/Re

10 Siemens received the Order for the World s first 800 kv HVDC in China Southern Power Grid 1,418 Km 5,000 MW +/- 800 kv DC Commercial Operation: 2009 Pole Pole 2 Siemens the Leader in Bulk Power DC Transmission Technology Yunnan-Guangdong Reduction in CO 2 versus local Power Supply with Energy-Mix 32.9 m tons p.a. -by using Hydro Energy and HVDC for Transmission PTD H 1 MT/Re

11 Jinping ± 800 kv HVDC Transmission Project Leshan Jinping Plant I To Sichuan Power Grid Jinping Plant I I Guandi Linping Chongqing Wuhan Changsha Sunan Shanghai Xichang 2,237 Km 6,400 MW +/- 800 kv DC Planned for 2012 For Comparison: Germany Guangdong 840 Km Source: Brazil-India-China Summit Meeting on HVDC & Hybrid Systems Planning and Engineering Issues, July 2006, Rio de Janeiro, Brazil PTD H 1 MT/Re PTD H Power 1 MT/Re Transmission and Distribution

12 Grid Extension in India - Hybrid AC plus DC DEVELOPMENT OF NATIONAL GRID Prospects in China and India: Smart and Strong Grids JULLANDHAR MOGA TEHRI BALLABGARH A'PUR (DELHI RING) MEERUT BHUTAN HISSAR DIHANG TALA DAMWE RANGANADI LUCKNOW ARUN TEESTA BHIWADI M'BAD G'PUR KATHAL- NR BONGAIGAON GURI JAIPUR AGRA ALLAHABAD /UNNAO MARIANI PURNEA SHIROHI MISA MALANPUR VARANASI SILIGURI/BIRPARA SINGRAULI BADARPUR 500MW TIPAIMUKH B'SHARIF ZERDA /BARH KAHALGAON DEHGAM NAGDA BINA SATNA VINDHYA- CHAL NER N.K. KRISHNA LIMBDI GANDHAR/ SEONI SIPAT NAGAR AMRELI KAWAS ROURKELA BANGLA JETPUR CHEGAON KORBA VAPI DESH BHANDARA RAIPUR HIRMA PIPAVAV TARAPUR AKOLA BOISAR PADGHE AMRAVATI CHANDRAPUR TALCHER ER 1000MW JEYPORE WR DHABOL LONIKAND KOYNA KARAD RAMAGUNDAM LAKSHADWEEP KOLHAPUR PONDA KAIGA MANGALORE URI KISHENPUR BANGALORE KOZHIKODE COCHIN 3000M W NARENDRA SIRSI KAYAMKULAM TRIVANDRUM WAGOORA DULHASTI RAVI SATLUJ SR PUGALUR 2000MW HOSUR 2000M W CHITTOOR SOUTH CHENNAI SINGARPET CUDDALORE KARAIKUDI KRISHNAPATNAM KAYATHAR VIJAYAWADA CHICKEN NECK GAZUWAKA PHASE - III (By 2012) PTD H 1 MT/Re LEGEND 765 KV LINES 400 KV LINES HVDC B/B HVDC BIPOLE EXISTING/ X PLAN XI PLAN IX PLAN NICOBAR ANDAMAN AND Similar Prospects as in China +/- 800 kv HVDC! Source: Brazil-India-China Summit Meeting on HVDC & Hybrid Systems Planning and Engineering Issues, July 2006, Rio de Janeiro, Brazil

13 Benefits of Hybrid AC/DC Solutions for Bulk Power Transmission in restricted Right-of-Way Areas DEVELOPMENT OF CHICKEN NECK AREA 50 GW Hybrid: 10 GW AC 40 GW DC EXISTING CHICKEN NECK AREA Up to 10 GW AC 6-7 x 6 GW DC 800 kv DC 800 kv DC FUTURE 800 kv DC 800 kv DC Source: Brazil-India-China Summit Meeting on HVDC & Hybrid Systems Planning and Engineering Issues, July 2006, Rio de Janeiro, PTD H 1 MT/Re Brazil

14 More Power out of the Grid for generated 2860 MW AC-bus of rectifier station 2814 MW plus CO 2 Reduction Technology Issues for for UHV DC Transmission PTD H 1 MT/Re

15 The Solution for UHV AC Example AC Test Transformer 1,200 kv Transformer Bushings: Type OTA; Trench UK *, Oil-Paper Technology Production: Hebburn/UK, MWB Shanghai/China Transformer Design for 1,200 kv is available Reference: Henjang / China * now now Siemens Siemens Protected Creepage Distance: 10.5 m PTD H 1 MT/Re PTD H 1 MT/Re Power and Distribution

16 Specific Issues for UHV AC The AC Measurements for UHV Essential to UHV System Control and Energy Management, e.g. with FACTS Capacitive Voltage Divider Type TEHMF Trench Canada * Production: Toronto und Shanghai In Service up to 800 kv Scaling-up for 1100 kv is no Problem SF 6 insulated CT and PT Design is well proven Type SAS, SVS; Trench Germany * Production: Bamberg and Shanghai In Service up to 800 kv Scaling-up for 1100 kv is no Problem * now now Siemens Siemens PTD H 1 MT/Re

17 Air-Core, Air-cooled Smoothing Reactor and Converter Transformer The Dimensions are huge 500 kv DC in the Pictures are now being extended to 800 kv DC Mostly an Issue of Mechanics but not only PTD H 1 MT/Re

18 UHV DC Measurements V DC I DC 800 kv DC Application: Design and Manufacturing based on existing Technology Easy to extend on UHV DC All Measuring Components are at high Potential Signal Transmission via optical Fibers inside the Composite Housing Voltage Divider 500 kv DC East- 500 kv DC Current Transducer in South Interconnector, India PTD H 1 MT/Re PTD H 1 MT/Re Power Zhaoqing, Transmission China and Distribution

19 UHV DC Reactor in Test Field 800 kv DC 3,125 A 75 mh 28 tons! PTD H 1 MT/Re

20 UHV DC Bushing at Test Lab TU Graz Austria 800 kv DC Bushing in Test Field PTD PTD H 1 H MT/Re 1

21 800 kv HVDC Transformer under Construction 320 MVA Single-Phase* Transformer 48** Transformers for the Yunnan-Guangdong UHV DC Project Core Design: 3 Limbs & 2 Return Limbs L x W x H: 26 x 6.4 x 15.2 m Total Weight: 512 tons * for Transportation Reasons ** plus 8 Spare Units Test Voltages AC (1 min) 1,020 kv SI 1,790 kv LI (FW/CW) 2,080/2,320 kv DC (2 hrs) 1,175 kv PR (90/90/45 min) 935 kv PTD H 1 MT/Re

22 Solutions for UHV DC Thyristor Valves Valve Group UHV DC Valves with proven modular Design based on existing Technology and Know-How for DC Voltage 800 kv Valve Tower Configuration: Double or Quadruple Valve Proven existing LT Technology Module Thyristor PTD H 1 MT/Re

23 HVDC Thyristor Valves Principle Circuit of a 12-Pulse Group 12-Pulse Group Valve Tower Arrangement Neutral A B C Multiple Valve Unit (Quadruple Valve) Valve Branch to DC Line: + or PTD H 1 MT/Re A B C Example 500 kv

24 800 kv HVDC with 2 Converters per Pole 800 kv To AC Bus & Filters DC Line Neutral PTD H 1 MT/Re Power and Distribution

25 N-1 Criteria: fully redundant HVDC Scheme with two 12-Pulse Converters per Pole Transformer Bushings 400 kv DC 800 kv DC Each Pole can be operated with 400 kv DC DC Neutral 400 kv-valve Group 800 kv-valve Group DC Line PTD H 1 MT/Re Power Transmission 25 N Criteria: Redundancy PTD H 1 MT/Re through Bypass-Breakers and Distribution

26 Valve Hall Configuration for UHV DC DC Neutral 400 kv Valve Hall 400 kv DC Each Valve Group can be bypassed n-1 Criteria 400 kv DC to 800 kv DC Line 800 kv Valve Hall Ready for Transmission PTD H 1 MT/Re PTD H 1 MT/Re Power Transmission and and Distribution

27 Thorough Testing is essential Verification of Mechanical Performance Cantilever Bending Test for DC Insulators Verification of Clearance Distances for UHV DC Equipment PTD H 1 MT/Re

28 Testing of DC Bypass-Breakers 800 kv DC 400 kv DC PTD H 1 MT/Re

29 Snapshots from DC Valve Tower Testing Dielectric Testing of Valve-Support Structure PTD H 1 MT/Re

30 Finally it will look like this: PTD H 1 MT/Re

31 Siemens is successful in the HVDC Business for more than 30 Years World s 1 st HVDC with 500 kv DC Cable 1977/2004 Nelson River 1984 Poste Châte. World s 1 st HVDC with 8 kv Thyristors 1997/2004 Celilo 1995 Sylmar East 2007 Neptune 1987 Virginia Smith 2005 Lamar 2001 Moyle World s 1 st HVDC with Transmission Voltage above 500 kv 2010 Bridnet Storebælt 2009 Ballia- Bhiwadi 2003/ Ge-Nan 2004 GuG I 2007 GuG II 31 Status: PTD PTD H 1 H MT/Re 1 MT/Re ESI 2001 Thailand- Malaysia 1995 Acaray 1977/ Welsh Cahora Bassa Basslink World s 1 st HVDC with LTT and integrated BOD 1993 Etzenricht 1983 Dürnrohr 1993 Wien Südost World s longest HVDC Cable in Operation 2000 TSQ 2009/2010 Yunnan- Guangdong World s 1 st HVDC with Transmission Voltage of 800 kv!

32 Intelligent Solutions for Power Transmission Advanced HVDC Technologies Thank You for your Attention! PTD H 1 MT/Re