摘要
电力变压器运行过程中发生绕组变形将会导致绕组漏感参数发生变化,提出用变压器等值回路平衡方程进行绕组参数辨识的方法。以双绕组单相及三相变压器绕组回路平衡方程为基础,采用最小二乘算法估算原副边绕组电阻、漏电感参数,进而实现变压器绕组变形的在线监测,并针对变压器稳态回路方程模型的不可辨识性提出新的解决方法。仿真和动模试验表明该方法的合理性和有效性。
Transformer winding deformation occurred during operation may cause the change of leak inductance. A transformer winding deformation identification method is proposed,which is basded on the equivalent circuit equation and applies the least square algorithm for parameter estimation. With the dual-winding single-phase and three-phase transformer equivalent circuit equations as the foundation,the winding parameters including the resistance and leak inductance of the primary and secondary windings are estimated for on-line transformer winding deformation monitoring. A new solution is put forward for the irrecognizability of transformer stable state circuit equation model. Simulation and test indicate the method rational and effective.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第5期11-14,27,共5页
Electric Power Automation Equipment
基金
国家自然科学基金项目(50577050)
关键词
绕组变形
回路平衡方程
参数辨识
漏电感
在线监测
winding deformation
equivalent circuit equilibrium equation
parameter identification
leak inductance
on-line monitoring
