强结构扰动理论在唯一稳态消谐法中的应用:以零序电阻消除铁磁谐振分析为例  

Application of strong structure perturbation theory on the unique steady state elimination method:Eliminating of the ferroresonance using zero sequence resisotr

作　　者：冯平[1,2] 王尔智[3] 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 [2]沈阳工业大学电气工程学院1辽宁沈阳110178 [3]沈阳工业大学电气工程学院

出　　处：《河南科技学院学报（自然科学版）》2011年第1期88-94,共7页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金项目(50477050)

摘　　要：将唯一稳态消谐法应用在中性点接地电力系统铁磁谐振的分析中,以强结构扰动理论为工具,得到了相应的消谐条件.结果表明,消除谐振的条件可以用一个矩阵的稳定性条件来决定,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 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 by zero-sequence resistor.Based upon strongly structured perturbation theory,the conditions for eliminating this ferroresonance are obtained,which can be determined by the Hurwitz conditions of some constant matrixes.The conclusions to be proved by numerical simulation are correct,and it shows the effectiveness of unique steady state elimination method.

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 

分 类 号：TM13[电气工程—电工理论与新技术]