IEEE Power & Energy Magazine - July/August 2016 - 71

The China
Southern
Power Grid

T

The China SouThern Power Grid LTd (CSG)
is a unique power system, featuring long-distance, largecapacity transmission by extra-high-voltage (ehV)/ultra
hV (uhV) parallel ac and dc. half of the load is located
in the Pearl river delta of Guangdong province in the
east, while 90% of the primary energy resources are
concentrated in Yunnan and Guizhou provinces in the
west. CSG has 16 transmission lines (eight ac and eight
dc) with a total transmission capacity over 35 Gw to
transmit power from west to east. all hVdc inverter stations are located closely in the receiving grid, of which
the average location distance is fewer than 100 km. This
structure of parallel ac/dc system and multi-infeed dc has
brought a unique risk of system operation and control. in
this article, operation challenges and planning solutions
of CSG are presented.

Overview of CSG
CSG, one of the two national power grids in China, was
established on 29 december 2002 as a result of the power

By Hongyang Zhou,
Yinsheng Su,
Yiping Chen, Qian Ma,
and Weike Mo
Digital Object Identifier 10.1109/MPE.2016.2547283
Date of publication: 16 June 2016

72

ieee power & energy magazine

1540-7977/16©2016IEEE

july/august 2016



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IEEE Power & Energy Magazine - July/August 2016 - Cover3
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