发明名称 |
MALFUNCTION DETECTION SYSTEM FOR CURRENT TRANSFORMER FOR MEASURING INSTRUMENT |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a malfunction detection system for a current transformer for a measuring instrument, which detects the malfunctions of the current transformer for a measuring instrument to immediately take countermeasures for prevention of serious accidents in an electric power system. <P>SOLUTION: A partial discharge detector 1 and a voltage sensor 7 are each connected to a monitor 3 which is further connected to a transmission device 4 through a communication line. The transmission device 4, a user terminal 5 and a maker terminal 6 are connected through a network. The partial discharge detector 1 is a device for measuring discharge noise and vibration which are generated with the occurrences of partial discharge in the externally mounted current transformer 2. The voltage sensor 7 is for measuring voltage across a reactance element 9 which is connected to the voltage detecting terminal 8 of an oil-filled current transformer 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
申请公布号 |
JP2004288861(A) |
申请公布日期 |
2004.10.14 |
申请号 |
JP20030078732 |
申请日期 |
2003.03.20 |
申请人 |
TM T & D KK;TM HENDEN KIKI TECHNOLOGY KK |
发明人 |
UCHIYAMA MASAKI;OTA YOSHIHIRO |
分类号 |
G01R31/12;H01F41/00;H02B13/065;(IPC1-7):H01F41/00 |
主分类号 |
G01R31/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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