摘要
在输电线路故障测距中,线路参数变化或其他参数误差都会对测距精度有较大的影响。针对基于分布参数模型的双端不同步数据故障测距问题,提出了一种参数误差归算修正算法。该算法将各类参数误差归算为单位长度线路参数的变化,利用故障前电压/电流数据,计算出归算系数,反馈修正系统模型。Matlab仿真表明,该算法能有效地减少各类参数误差的影响,提高了故障测距的抗干扰能力和故障测距精度。
In the transmission line fault location, transmission line parameters changes or other parameter errors impact greatly on the accuracy of fault location. For fault location of the two-terminal non-synchronous data based on distribution parameters model, a parameter errors converting and correcting algorithm was presented. The different parameter errors were converted to unit length parameter changes of the transmission line. Using the two-terminal data of voltage and current before fault time, the convert coefficient was calculated. Then system model was feedback amended. Matlab simulation result shows that this algorithm can effectively reduce the various parameter errors impact, improve anti-jamming capability and accuracy of fault location.
出处
《机电工程》
CAS
2010年第4期104-107,共4页
Journal of Mechanical & Electrical Engineering
关键词
故障测距
参数误差
归算系数
抗干扰能力
fault location
parameter errors
convert coefficient
anti-jamming capability
