Influences of the UHVDC Project from Hami to Zhengzhou on Central China Power Grid

doi:10.11930/j.issn.1004-9649.2012.11.47.4

Abstract

Abstract: The UHVDC project from Hami to Zhengzhou is China′s first dedicated DC Project for wind power and thermal power transmission, and the first large capacity project transmitting power to Central China power grid. Its construction will significantly affect the peak-regulation ability, security and stability of the receiving-end grid. The requirements of large capacity DC transmission for the receiving-end gird are proposed. The receiving-end location of Hami-Zhengzhou project is verified through regional electricity balance calculation and grid structure analysis, which is selected in the east of Zhengzhou City. Power system operation simulation proves that the peak-regulation ability of Central China grid can meet the requirements of the DC transmission. But the simulation calculation for grid security and stability indicates that the AC interconnection lines between North China grid and Central China grid are weak. Therefore the AC interconnection section needs to be strengthened or the section′s transmission capacity needs to be lowered for security and stability of the power grid.

Key words: UHV, out transmission of Xinjiang power, wind power and thermal power transmission, peak-regulation analysis

CLC Number:

TM721.1

ZHONG Sheng, GUO Xiang-guo, TIAN Xin, LI Tai-jun. Influences of the UHVDC Project from Hami to Zhengzhou on Central China Power Grid[J]. Electric Power, 2012, 45(11): 47-51.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2012.11.47.4

https://www.electricpower.com.cn/EN/Y2012/V45/I11/47

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