作　　者： ; ; ; ;

机构地区： 东北电力大学

出　　处： 《吉林电力》 2006年第1期21-23,39,共4页

摘　　要： 提出了Du ffing振子检测输电线正序故障分量的Du ffing振子方向元件法。采用Du ffing振子周期策动力为故障电压,摄动力为故障电流。系统正常运行时,Du ffing振子方向元件没有输出;系统处于正向故障和反向故障时,Du ffing振子方向元件分别处于大周期状态和混沌状态,从而区分了故障的正反方向。该法判别方向的过程简单、准确,鲁棒性比较好。仿真结果证明了该方法的可行性和有效性。 Duffing oscillator directional relay which based on positive sequence fault components of transmission lines is proposed. Fault voltage is selected to be Duffing oscillator periodic driving force and fault current is the disturbing force. There is no output in the directional relay when power system is stable ,however the directional relay will output big cycle or chaos thus discriminates between positive and reverse fault. The approach of fault direction selection process is simple and accurate, It has strong robustness. Simulation results show feasibility and effectiveness.

关 键 词： 振子 正序 故障分析 策动力 摄动力

领　　域： [电气工程]