弱结构扰动唯一稳态消谐法在铁磁谐振中的应用  

Application of Unique Steady State Elimination Method in Resonance Elimination Based on Weakly Structured Perturbation

作　　者：冯平[1,2] 王尔智[2] 王维俊[1] 

机构地区：[1]解放军后勤工程学院机械电气工程系,重庆401311 [2]沈阳工业大学电气工程学院,辽宁沈阳110178

出　　处：《陕西电力》2011年第2期17-20,共4页Shanxi Electric Power

基　　金：国家自然科学基金资助项目(50477050)

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1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分析中,以弱结构扰动理论为工具,得到了相应的消谐条件。研究结果表明,消除谐振的条件可以用矩阵的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 to eliminate 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 system is unique,then the corresponding conditions are the conditions for eliminating resonance.In this paper,this new method is applied to analyze the eliminating of ferroresonance in neutral grounding power system.Based upon weakly structured perturbation theory,the conditions for eliminating this ferroresonance are obtained.The conclusions of this article are proved correct by numerical simulation,and it shows the effectiveness of unique steady state elimination method.

关 键 词：中性点接地系统 非线性系统 唯一稳态消谐法 铁磁谐振 

分 类 号：TM132[电气工程—电工理论与新技术]