Application prospect analysis for 1000 kV/220 kV UHV transformer

Jun Zhao Cheng; Jiang Bo Chen; Xi Zhang; Hui Hao Guo; Sheng Wei Cai; Min Feng Shao

Application prospect analysis for 1000 kV/220 kV UHV transformer

Jun Zhao Cheng^*, Jiang Bo Chen, Xi Zhang, Hui Hao Guo, Sheng Wei Cai, Min Feng Shao

^*Corresponding author for this work

State Grid Corporation of China

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

UHV is a promising technology for the development of grid. 1000 kV/220 kV transformer will shorten electric distance between power supplies and load, which will lead to lower cost and smaller occupation for transmission project. But it can also raise short circuit current level. Thus it is essential to analyze the prospect of 1000 kV step-down 220 kV transformer comprehensively. This paper compares the cost of direct step-down scheme by using 1000 kV/220 kV transformer and the conventional step down scheme by using 1000 kV/500 kV in series with 500 kV/220 kV transformer for the same transmission capacity. The short circuit current level of the two aforementioned schemes are also analyzed by PSASP for different gird develop stages. The requirements for using 1000 kV/220 kV transformer are finally summarized as a practice reference.

Original language	English
Pages (from-to)	142-148
Number of pages	7
Journal	Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control
Volume	42
Issue number	15
Publication status	Published - 1 Aug 2014
Externally published	Yes

Keywords

Application prospect
Cost
Short-circuit current
Transformer
UHV

Cite this

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title = "Application prospect analysis for 1000 kV/220 kV UHV transformer",

abstract = "UHV is a promising technology for the development of grid. 1000 kV/220 kV transformer will shorten electric distance between power supplies and load, which will lead to lower cost and smaller occupation for transmission project. But it can also raise short circuit current level. Thus it is essential to analyze the prospect of 1000 kV step-down 220 kV transformer comprehensively. This paper compares the cost of direct step-down scheme by using 1000 kV/220 kV transformer and the conventional step down scheme by using 1000 kV/500 kV in series with 500 kV/220 kV transformer for the same transmission capacity. The short circuit current level of the two aforementioned schemes are also analyzed by PSASP for different gird develop stages. The requirements for using 1000 kV/220 kV transformer are finally summarized as a practice reference.",

keywords = "Application prospect, Cost, Short-circuit current, Transformer, UHV",

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T1 - Application prospect analysis for 1000 kV/220 kV UHV transformer

AU - Cheng, Jun Zhao

AU - Chen, Jiang Bo

AU - Zhang, Xi

AU - Guo, Hui Hao

AU - Cai, Sheng Wei

AU - Shao, Min Feng

PY - 2014/8/1

Y1 - 2014/8/1

N2 - UHV is a promising technology for the development of grid. 1000 kV/220 kV transformer will shorten electric distance between power supplies and load, which will lead to lower cost and smaller occupation for transmission project. But it can also raise short circuit current level. Thus it is essential to analyze the prospect of 1000 kV step-down 220 kV transformer comprehensively. This paper compares the cost of direct step-down scheme by using 1000 kV/220 kV transformer and the conventional step down scheme by using 1000 kV/500 kV in series with 500 kV/220 kV transformer for the same transmission capacity. The short circuit current level of the two aforementioned schemes are also analyzed by PSASP for different gird develop stages. The requirements for using 1000 kV/220 kV transformer are finally summarized as a practice reference.

AB - UHV is a promising technology for the development of grid. 1000 kV/220 kV transformer will shorten electric distance between power supplies and load, which will lead to lower cost and smaller occupation for transmission project. But it can also raise short circuit current level. Thus it is essential to analyze the prospect of 1000 kV step-down 220 kV transformer comprehensively. This paper compares the cost of direct step-down scheme by using 1000 kV/220 kV transformer and the conventional step down scheme by using 1000 kV/500 kV in series with 500 kV/220 kV transformer for the same transmission capacity. The short circuit current level of the two aforementioned schemes are also analyzed by PSASP for different gird develop stages. The requirements for using 1000 kV/220 kV transformer are finally summarized as a practice reference.

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KW - Short-circuit current

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KW - UHV

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Application prospect analysis for 1000 kV/220 kV UHV transformer

Abstract

Keywords

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