谢小荣;董宜鹏;刘平;白恺;刘辉;王征;高洵;

• 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)
• 2:华北电力科学研究院
• 3:华北电网有限公司

摘要(Abstract)：

分析了托克托电厂阻塞滤波器(blocking filter,BF)引发机组异步自励磁的机理,探讨了兼顾抑制异步自励磁和扭振互作用(torsional interaction,TI)的BF改进设计方法。首先分析了BF参数对异步自励磁和TI模态的影响关系,发现增大电抗支路电阻或降低其品质因数有利于降低异步自励磁风险,但同时会在一定程度上削弱BF阻塞TI和暂态扭矩的效果;进而提出了BF改进设计的多目标参数优化思路,并基于特征值分析和优化搜索获得所有方式下能避免自励磁模态发散的最小增补电阻;最后通过串补输电系统的机网联合试验对改进BF进行检验,结果表明:改进BF能有效避免异步自励磁风险,并在正常情况下防止出现TI发散现象,同时验证了现场实测与仿真分析的一致性,为托克托串补和BF的安全投运创造了条件。

关键词(KeyWords)： 阻塞滤波器;次同步谐振;异步自励磁;现场试验

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51077080);; 电力系统及发电设备控制和仿真国家重点实验室基金项目(SKLD11M02)的资助~~

作者(Author): 谢小荣;董宜鹏;刘平;白恺;刘辉;王征;高洵;

Email:

DOI: 10.13335/j.1000-3673.pst.2013.03.014

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