摘要
根据传统小扰动分析模型，结合励磁PSS功能在单机系统小扰动传递函数框图中的表达形式，经过理论推导，对励磁系统调差系数对系统阻尼的影响机理进行了分析，并通过BPA所搭建的仿真模型、现场试验结果对分析结论进行了验证。结合当前电网对电厂励磁参数的管理情况，提出了电网应当将励磁调差系数等对电网有重要影响的励磁参数纳入统一管理范畴的建议。
This paper studies the impact of Line Droop Compensation（LDS） on the System＇s Damping Ratio ofpower systems. The study reveals that LDS changes the coefficientsK5 of the Heffron-Philips model. Then, the time domain simulations are performed base on BPA, one is to verify the LDS＇s impact, and the other is to make a demonstration of LDS＇s impact calculation. By the end, this paper make suggestion for power grid to reinforce the management of excitation equipment excitation parameters.
出处
《南方电网技术》
2011年第A01期117-119,共3页
Southern Power System Technology
关键词
励磁系统
调差
阻尼
excitation system
LDS
damping ratio
