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    • 1. 发明申请
    • METHOD AND DEVICE FOR SUPERVISING SECONDARY CIRCUIT OF INSTRUMENT TRANSFORMER IN POWER SYSTEM
    • 用于监控电力系统中仪器变压器二次电路的方法和装置
    • WO2010034149A1
    • 2010-04-01
    • PCT/CN2008/072480
    • 2008-09-24
    • ABB RESEARCH LTDSU, BinFAN, JianzhongJING, LeiLIU, QianjinWANG, JianpingYANG, Ying
    • SU, BinFAN, JianzhongJING, LeiLIU, QianjinWANG, JianpingYANG, Ying
    • G01R31/06G01R31/00
    • H02H7/261G01R31/027H02H3/05H02H3/40
    • A method for supervising a secondary circuit of an instrument transformer in a power system, the instrument transformer is connected to a power system, the method comprises: detecting, by a protection Intelligent Electronic Device, protection IED, which is connected to the secondary circuit of the instrument transformer and protects the power system component, disturbances in a signal from the instrument transformer; and determining whether a failure occurs in the secondary circuit of the instrument transformer, according to both a disturbance detection result from the protection IED and another disturbance detection result from at least one of other protection IEDs, the other protection IEDs comprising protection IEDs which are connected to other secondary circuits of the instrument transformer or to secondary circuits of another instrument transformer connected to the power system component, and protection IEDs which are connected to other instrument transformers connected to other power system components connected to the same busbar as the power component is connected to. A protection Intelligent Electronic Device, protection IED, for supervising a secondary circuit of an instrument transformer in a power system.
    • 一种监控电力系统中仪表变压器二次回路的方法,仪表变压器与电力系统连接,该方法包括:通过保护智能电子设备检测保护IED,该保护IED连接到二次回路 仪表变压器保护电力系统部件,仪表变压器信号的干扰; 以及根据来自保护IED的干扰检测结果和来自其它保护IED中的至少一个的另一个干扰检测结果,确定在仪表变压器的次级电路中是否发生故障,其他保护IED包括被连接的保护IED 到仪器变压器的其他二次回路或连接到电力系统组件的另一台仪表变压器的二次回路,以及与连接到连接到与功率部件相连的同一母线上的其他电力系统组件的其他仪表变压器连接的保护IED 至。 保护智能电子设备,保护IED,用于监控电力系统中仪表变压器的二次回路。