文档介绍：第 25 卷第 11 期中国电机工程学报
2005 年 6 月 Proceedings of the CSEE ©2005 .
文章编号:0258-8013 (2005) 11-0006-06 中图分类号:TM712 文献标识码:A 学科分类号:470⋅40
大区电网弱互联对互联系统阻尼和
动态稳定性的影响
余贻鑫,***
(天津大学电气与自动化工程学院,天津市南开区 300072)
THE IMPACT OF WEAK INTERNECTION OF BULK POWER GRIDS TO DAMPING
AND DYNAMIC STABILITY OF POWER SYSTEMS
YU Yi-xin, LI Peng
(School of Electrical Engineering and Automation of Tianjin University, Nankai District, Tianjin 300072, China)
ABSTRACT: The interconnection of national power grids in 关键词:电力系统;大型电网;互联;阻尼;动态稳定;低
China brings new issues into power system stability and control, 频振荡
especially low-frequency oscillation. In this paper, we analysis
the low-frequency phenomena from the viewpoint of damping 1 引言
torques. First, damping torques of strong and weak connected
−−−
systems pared, and the results show that the relatively 随着东北华北联网、福建华东联网、华中
large impedance of tie-lines in weakly interconnected systems 华北联网、川渝华中联网以及三峡电站的投产,一
could greatly reduce the damping of these systems. Then, this 个途经 14 省市自治区,统调装机容量接近 140GW
conclusion is validated by tests in national grids of China. 的超大规模跨区交流同步电网已经形成,同时该系
These tests also demonstrate that reinforcement of the
统通过直流联络线分别与华东电网、福建电网以及
connection between two bulk power grids is an effective way to
mitigate oscillations in systems. Finally, we introduce the n