Sensitive factors affecting transmission capacity of large-scale UHV power supply system

被引：0

作者：

Qin, Bo ^{[1
]}

Li, Xingyuan ^{[1
]}

Hu, Nan ^{[1
]}

Li, Kuan ^{[1
]}

机构：

[1] School of Electrical Engineering and Information, Sichuan University, Chengdu

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2014年 / 34卷 / 10期

关键词：

Damping; Electrical distance; Large-scale power supply system; Low-frequency oscillation; Sensitive factors; Stability; Transmitted power; UHV power transmission;

D O I：

10.3969/j.issn.1006-6047.2014.10.025

中图分类号：

学科分类号：

摘要：

The formula of equivalent damping coefficient considering the characteristics of sending-terminal is deduced and analyzed for single-machine system with load. The analytical results show that, the relative rotor degree and the electrical distance are the main factors affecting the damping characteristics of system and the equivalent damping coefficient is inversely proportional to both of them. Simulations are carried out in PSASP for Ximeng and Jinjie -Fugu large -scale UHV power supply systems, which, verifying the correctness of theoretical analysis, show that, the large-scale power supply system under N-1 or N-2 operating state grows the dynamic unstability much easier than the normal power supply system. Suggestions for the operation of large-scale power supply system are given according to the theoretical analysis and simulative results.

引用

页码：150 / 157

页数：7

共 14 条

[1]

Wang Z., Economy and security analysis of AC UHV in China, Electric Power Automation Equipment, 27, 10, pp. 1-4, (2007)

[2]

Yin Y., Guo Q., Zhang Y., Et al., Scheme study and safety analysis of UHV synchronous power grid composition, Electric Power Construction, 28, 2, pp. 1-4, (2007)

[3]

Qin X., Song Y., Zhao L., Et al., Comparative research on grid-connection modes for huge power supplies , Power System Technology, 33, 17, pp. 64-69, (2009)

[4]

Zhou X., Song Y., Tian J., Et al., Impacts of the access of 750 kV system and super-power source on Changji Power Grid, Electric Power, 45, 1, pp. 10-14, (2012)

[5]

Zhou J., Jin D., Wang W., Et al., Analysis of influence of huge power supplies grid-connection modes on short- circuit current, Advanced Technology of Electrical Engineering and Energy, 31, 1, pp. 48-51, (2012)

[6]

Liu X., Chen H., Yao C., Simulation of power strategy based on nonlinear for UHV tieline, Electric Power Automation Equipment, 32, 4, pp. 92-95, (2012)

[7]

Xiong H., Xiang T., Zhan X., Et al., An optimal control strategy of reactive power and voltage for UHVAC power transmission system, Power System Technology, 36, 3, pp. 34-39, (2012)

[8]

Zeng Q., Study on power transmission capability of 1000 kV ultra high voltage transmission system, Power System Technology, 36, 2, pp. 1-6, (2012)

[9]

Xu W., Bao Y., Xu T., Et al., Real-time control power system low-frequency oscillation, Electric Power Automation Equipment, 32, 5, pp. 98-101, (2012)

[10]

Wang J., Liu W., Xie C., Notice of retraction research on damping characteristics of Xinjiang-Northwest Power Grid before and after interconnection , 2010 Asia-Pacific Power and Energy Engineering Conference(APPEEC), pp. 1-5, (2010)

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