Fault recording data transient homogeneous comparison method and device

The invention discloses a fault recording data transient homogeneous comparison method and device. The method comprises the following steps: fault recording files of a relay protection device and a fault recorder are matched; a transient data segment in which the fault recording files of the relay protection device and the fault recorder are accurately aligned is acquired; and curve fitting is carried out on the transient data segment to realize accurate comparison of the data, and a data warning is issued when the error exceeds the maximum value. The method and the device have the advantage that the online monitoring and warning are carried out on the precision of the sampling value of the relay protection device or the fault recording device and the reliability of the relay protection device is improved. 本发明公开了一种故障录波数据暂态同源对比方法及装置，所述方法包括：对继电保护装置和故障录波器的故障录波文件进行匹配；获取继电保护装置和故障录波器的故障录波文件精确对齐的暂态数据段；对暂态数据段进行曲线拟合，实现数据的精确对比，超出误差最大值时进行数据预警；本发明的优点在于：对继电保护装置或故障录波装置的采样值的精度进行在线监测及预警，提高继电保护装置的可靠性。