高压架空输电线路覆冰诊断新方法

摘要

线路覆冰是严重影响高压架空线路安全稳定运行的一种常见次生灾害，为此，提出了一种高压架空输电线路覆冰诊断新方法。该方法以输电线路两侧的电压电流为信号源，自适应动态生成反映覆冰参数特征的参考电压、电流数据集。以检测数据与参考数据集的广义相关系数为判别标准，根据广义相关系数的大小诊断输电线路的覆冰区域和严重程度。大量的仿真分析初步证实了该方法的准确性和可靠性。%Line icing is a common secondary disaster that seriously affects operation safety and stability of HV overhead transmission lines.Therefore,the paper presents a icing detection method of HV overhead transmission lines.With signal source of voltage and current at both sides of transmission lines,data set of reference voltage and current that reflect charac-teristics of icing parameters are adaptively and dynamically generated.The generalized correlation coefficient of the detec-ted data and reference data set is adopted as judgment criteria to diagnose icing area and extent in accordance to what the co-efficient is.It is proved by lots of simulation analysis that the method is of accuracy and reliability.