电网技术2011，Vol.35Issue(10)：53-58,6.
两区域互联系统联络线功率波动理论分析
Theoretical Analysis on Tie-Line Power Oscillation of Two-Area Interconnected System
陈磊 1刘辉 2闵勇 1李群炬 2吴涛2
作者信息
- 1. 电力系统及发电设备控制和仿真国家重点实验室（清华大学电机系）,北京市海淀区100084
- 2. 华北电力科学研究院有限责任公司,北京市西城区100045
- 折叠
摘要
Abstract
The tie-line power oscillation of the two-area interconnected system due to power impacts is strictly derived. The power oscillation process caused by disturbance is divided into three stages, namely before, during and after the disturbance, and dynamic equation for each stage is established and the variation of the state point is derived. Based on the theory of distribution of impact powers in power systems, the tie-line power of the two-area system after power impacts is analysed. After the disturbance, the tie-line power takes on damped oscillation of inter-area low-frequency oscillation mode, and the steady-state power depends upon the total inertia time constant of the generators in both areas, meanwhile the expression of power oscillation similar to step response of second-order system is derived and the formula for the peak power during the first swing, which is mainly determined by the ratio of total inertia time constant of both areas and the damping ratio of the inter-area oscillation mode, is obtained. The effectiveness of the proposed equations is verified by numerical simulations and the analysis on the generator-tripping contingency of North China and Central China interconnected system.关键词
互联系统/联络线/冲击功率/功率波动/阻尼比Key words
interconnected system/tie-line/impact power/power oscillation/damping ratio分类
信息技术与安全科学引用本文复制引用
陈磊,刘辉,闵勇,李群炬,吴涛..两区域互联系统联络线功率波动理论分析[J].电网技术,2011,35(10):53-58,6.
