摘要
唯一稳态消谐法是近年出现的消除非线性系统谐振新的分析方法。该方法的基本思想是如果非线性系统存在一个非谐振的正常解,并且该系统具有唯一的稳态,则此时对应的条件就是系统不发生谐振的条件。将这一方法应用在消除中性点接地电力系统的铁磁谐振的分析中,以向量比较原理为工具,得到了相应的消谐条件。其结果表明,消除谐振的条件可以用一个常数矩阵的Hurwitz条件来决定,并用数值模拟进行验证,表明结果正确,同时也说明唯一稳态消谐法的有效性。
Unique steady-state elimination method is a new method for eliminating resonance in nonlinear system presented recently.Its basic idea is that if there is a normal（non-resonance） solution for the system,and the steady state of the system is unique,then the corresponding conditions are the conditions for eliminating resonance.This new method is applied to analyze the elimination of ferroresonance in neutral grounding system.Based on vector comparison method,the conditions for eliminating this ferroresonance are obtained,which can be determined by the Hurwitz conditions of some constant matrixes.The conclusions are proved correct by numerical simulation,and it shows the effectiveness of unique steady-state elimination method.
出处
《四川电力技术》
2011年第1期5-7,20,共4页
Sichuan Electric Power Technology
基金
国家自然科学基金资助项目(50477050)
关键词
电力系统
铁磁谐振
中性点接地系统
非线性系统
唯一稳态消谐法
power system
ferroresonance
neutral grounding system
nonlinear system
unique steady-state elimination method
