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：
Qin, Bo | 1600年 / Electric Power Automation Equipment Press卷 / 34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
收藏
页码：150 / 157
页数：7
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