The use of HVDC at 800 kV,

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????????
The use of HVDC at 800 kV, has been found
efficient, environmentally friendly and
economically attractive for large point to
point power transmissions of the order of 6400 MW
and more, with distances of more than 1000 km.
Worldwide there is an increasing interest in the
application of HVDC at 800 kV.
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3

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??????????????????? (?????????????????) ???????
???? 1901????????????????1928??????????????
???,????????,?????????????????????????????
1954???????????????????(????????)???????,1977?????
??????????????(????I???)???
?????12???????????????,??????????1600MW(????????I?
??),???????450kV(????l???),???????1362km(??????)?
???????????????????????????????????????,???
?????????????
5

6

• ????????????
• 20??70????,?????????????????,???????????,?????????
  ????????????????,???????????????????????,?????????
  ????
• ??????????HVDC??????1972?????????,????80kV??????32
  0MW????????????,??????????1984???????????600kV???
  ??????,???6300MW,????1590km?
• ???????????????????,??????????????????
• 2010?07?08????????????800kV?????????,????????????
  ??,?????????????????6400MW(??????7000MW)
  ???????1907km???????4000A???????????????,?????????
  ????????????

7

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8
Thyristor Valve hall interior
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• 20??90????,IGBT??????,1997???? ?????IGBT??????????
  ?????? ???????
• ??,??????IGBT??HVDC??????Estlink??????,????150kV,
  ????350MW ,????105km?
• L HVDC??IGBT???????,???????,????????????,????????,
  ?? ??????????,??????????,?? ???????
• ??IGBT???????,??????????????????????????(IGCT)????
  ?????,??????????????????????

10
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• ??????????????????????????????
• HVDC Light ??????????????????????,???????????????
  ??????????,?????????,??????,?????????????
  ?????????????,????????????????????????????????????
  1200MW,320 kV????????????????,?????????????????
  ???????????????????
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????????? 1989?,???????????????(?l00kV,100
MW,54km)?????????(???)???????????????(500kV,120
0MW, 1064km) 1990???? 90???,?????????????
?????????????????????2004?????????(
500kV,3000MW, 962km )?2004?5??????
????800kV??????,????5000MW, 2010????????
???????,??????????????????800kV????????????????
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• ??????800kV?????????
• Connection point Xiangjiaba FuLong substation
• Connection point Shanghai FengXian substation
• Ownership State Grid Corporation of China
• Start of project December 2007
• Commissioning year Pole 1 and bipole 2010
• Transmission technology UHVDC, Ultra High
  Voltage Direct Current
• Transmission capacity 6 400 MW
• No. of poles 2
• DC voltage 800 kV
• Length of overhead DC line 2 071 km
• AC voltage 525 kV (both ends)
• The 800 kV voltage is formed by two 400 kV series
• connected 12-pulse converters.
• Main reason for choosing HVDC Long distance,
  network stability, low losses, environmental
  concerns
• For more information, please visit
  www.abb.com/hvdc

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12 ?????
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800kV?????
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Three Gorges - Guangdong HVDC Transmission
Jingzhou areal overview
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?????? ????? Valve hall with six
double valves for 1,500 MW.
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Three Gorges - Shanghai HVDC Transmission DC
yard and converter building in Yidu
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??2007?,????????????7085
km,?????1856?kW,?????????????????????,????????????
????????????????????????
?????????,?????????????????????????????????
?2020?,???????????????????????????,??800
kV??????????????????????????????????,???????????30
?,???2.6?km,?????9 440?kW ,???????????????????????
????????
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22

• (2)???????????
• ?????????,????????0.40.8?,???????,?0.6
  1????
• ????????,???????????????,?????,?????????
  ,??????????????????,????????????????0.20.35???

23

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• ????????????(??????)???,???????????????
  ???????????????????2??3????,??????????????????????
  ??????,????????,????????,?????????
• ??,???????8090???(???)??????,?????????
  ?????????????????????????????????????????????????

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• (3)?????
• ?????????????????,??????????????????????????,?????
  ????????????
• ??????????????,??????????????2????????10??????????
  ???????????????????10?25,??????????
• ????,????????,?????????,??????????????,???????????
  ?,?????????

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• (4)???????
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  ??????????????????,?????????,????????????????,????
  ???????????

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• (6)??
• ???????????????????
• ?????,??35kV????????
• 100kV?????????,?????
• ?????????????????,?
• ??????????????

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Cable laying project
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Conductor Aluminum or copper Conductor
screen Semi-conductive polymer Insulation Cross
linked HVDC polymer Insulation screen Semi-conduct
ive polymer Metallic screen Copper wires Swelling
tape Aluminum laminate Outer covering/Sheath Polye
thylene
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• (7)???????????
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  ? ??,???????????????2/3????????????

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  ??????)??????,?????????????????????,??????????????
  ??????????????,????????,??????????????????????????
  ???????,?????

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• (9)????
• ????500kV?? , ??500kV???????????40m,??50
  0kV????????50m,??1??????????????????2?,???????????
  ??????????2????????

33

• ????????????????
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• (3)?????12?24????
• (4)?????????
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• 2????
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• ?????????
• (1)?????

? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ?? ?? ?? ?? ?? ?? ?? ??
??(?/???/?) 0.299 0.054 0.126 0.055 0.29 0.054 0.14 0.01
?????(?/?) 0.560 0.120 4.80 0.20 0.6 0.06 1.4 0.25
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• (2)??????

? ? ??????() ??????() ??????() ??????()
? ? ??????50 ??????50 ??????100 ??????100
? ? ?? ?? ?? ??
?? 0.75 0.07 0.050 0.016
??(??)? 0.07 0.62 0.007 0.002
?? 0.82 0.69 0.057 0.018
??????????????,??????????????,??????
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• ?????????,??????????????700800km?

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• 1?????????,????HVDC???????????????????????,???????
  ?????????????????(???????)???????????????
• 2? ??????????,???????????????,??????????????,????
  ?????????????,???????????????????,????????????????
  ???,??? ???????

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45

• 3.2 ???????????

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• (1)???
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• ?????????1.0H???,??????????
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• 4.????????????????????

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• (3)?????
• ???????????????????????????????????????????,
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• (4)??????
• ????????????????????,??????????????50???????
  ??,????????????,??????????????????????,???????????
  ?????????????????,??????????????????????(SVC)?????
  ?????????????????

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(5)?? ?????????????????????,?????????????????
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,?????????????,?????????????????????? (6)?????
????????,??????????????????????,?????????????? (7
)????? ??????????????????,??????????????????
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