公开(公告)号：US20160291063A1

公开(公告)日：2016-10-06

申请号：US15035386

申请日：2014-11-12

申请人： James BLAKE ,  Alan BAKER ,  Michael PUTT ,  Joseph H. SCHAEFER ,  ALSTOM TECHNOLOGY LTD

发明人： James BLAKE ,  Alan BAKER ,  Joseph H. SCHAEFFER ,  Michael PUTT

IPC分类号： G01R15/24 ,  G01R31/02 ,  G01R31/04

CPC分类号： G01R15/24 ,  G01R15/246 ,  G01R31/027 ,  G01R31/04

摘要： Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.

摘要翻译： 根据这些示例性实施例的系统和方法提供了与用于监视备用电力变压器，特别是光纤电流和电压传感器的光电流传感器相关的方法和系统，更具体地，涉及涉及用于这种传感器的滤波器的应用，例如频率 跟踪梳状滤波器 根据一个实施例，一种用于监视电力变压器支架的连接状况的方法包括以下步骤：使用至少一个光电流传感器来测量流过待机电力变压器的高压侧的电流， 使用梳状滤波器对所测量的电流进行滤波，确定滤波后的测量电流是否小于预定阈值; 并产生备用电力变压器的高压侧未连接的报警指示。