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    Apparatus and method of water absorption test for generator stator winding insulator using cross capacitance
    2.
    发明授权
    Apparatus and method of water absorption test for generator stator winding insulator using cross capacitance 有权
    发电机定子绕组绝缘子采用交叉电容的吸水试验装置及方法

    公开(公告)号：US07403019B2

    公开(公告)日：2008-07-22

    申请号：US11464675

    申请日：2006-08-15

    Applicant: Yong-Chae Bae ,  Hee-Soo Kim ,  Hyun Lee ,  Yeon-Whan Kim ,  Doo-Young Lee

    Inventor： Yong-Chae Bae ,  Hee-Soo Kim ,  Hyun Lee ,  Yeon-Whan Kim ,  Doo-Young Lee

    IPC: G01R27/00

    CPC classification number: G01N27/223

    Abstract: Apparatus and method of water absorption for generator stator winding insulator using a cross capacitance are disclosed. The apparatus includes a sensor using a cross capacitance, and a water absorption testing unit for carrying out the water absorption test of the insulator of the stator winding of the power generator using the sensor. The apparatus determines whether the insulator absorbs water, according to thickness, using the cross capacitance, such that inferior winding is detected, a power plant is prevented from being suddenly stopped, costs for the maintenance are reduced, and the lifespan of the power generator is extended.

    Abstract translation: 公开了使用交叉电容的发电机定子绕组绝缘体的吸水装置和方法。 该装置包括使用交叉电容的传感器和用于使用该传感器执行发电机的定子绕组的绝缘体的吸水试验的吸水试验单元。 该装置根据厚度，使用交叉电容来测定绝缘体是否吸收水，使得检测到差的绕组，防止发电厂突然停止，维护成本降低，并且发电机的寿命为 延长

    SYSTEM AND METHOD FOR MONITORING VIBRATION OF POWER TRANSFORMER
    4.
    发明申请
    SYSTEM AND METHOD FOR MONITORING VIBRATION OF POWER TRANSFORMER 审中-公开
    用于监测电力变压器振动的系统和方法

    公开(公告)号：US20100102976A1

    公开(公告)日：2010-04-29

    申请号：US12345542

    申请日：2008-12-29

    Applicant: Wook Ryun Lee ,  Jun Shin Lee ,  Yong Chae Bae ,  Byong Han Kim ,  Sang Kil Lee

    Inventor： Wook Ryun Lee ,  Jun Shin Lee ,  Yong Chae Bae ,  Byong Han Kim ,  Sang Kil Lee

    IPC: G08B21/18 ,  G01M7/00

    CPC classification number: G01H1/003

    Abstract: The present invention provides a system and method for monitoring vibration of a power transformer. The system comprises at least one vibration sensor operably mounted to the outer case of a transformer for sensing vibration of the power transformer; a spectrum analyzer for processing the vibration signal from the vibration sensor, the spectrum analyzer generating a frequency spectrum of the vibration signal and calculating a velocity rating from the frequency spectrum; a diagnosing means for evaluating the velocity rating of the vibration signal, the diagnosing means assigning a vibration grade for each velocity rating, the diagnosing means finding the maximum velocity rating; and a means for dispatching a control message to an operator when the maximum velocity rating reaches a threshold value. It can be appreciated that the mechanical health of a large-sized transformer can be managed in a systematic and efficient manner during its operation. This system can prevent accidents due to the mechanical failure of the transformer or diagnosing failure of the transformer itself during its operation. This system also can provide useful information to determine when the transformer has to be replaced and further to predict what the expected lifespan of the transformer will be.

    Abstract translation: 本发明提供了一种用于监测电力变压器的振动的系统和方法。 该系统包括至少一个振动传感器，其可操作地安装到变压器的外壳上，用于感测电力变压器的振动; 用于处理来自振动传感器的振动信号的频谱分析器，频谱分析仪产生振动信号的频谱并从频谱计算速度等级; 用于评估振动信号的速度等级的诊断装置，为每个速度等级分配振动等级的诊断装置，找到最大速度等级的诊断装置; 以及当最大速度等级达到阈值时向操作者发送控制消息的装置。 可以理解，在其操作期间，可以以系统和有效的方式管理大型变压器的机械健康。 该系统可以防止变压器机械故障引起的事故或诊断变压器本身在运行过程中的故障。 该系统还可以提供有用的信息来确定何时必须更换变压器，并进一步预测变压器的预期使用寿命。

    APPARATUS AND METHOD OF WATER ABSORPTION TEST FOR GENERATOR STATOR WINDING INSULATOR USING CROSS CAPACITANCE
    5.
    发明申请
    APPARATUS AND METHOD OF WATER ABSORPTION TEST FOR GENERATOR STATOR WINDING INSULATOR USING CROSS CAPACITANCE 有权
    发电机定子绕组绝缘子使用交流电容器的吸水试验装置及方法

    公开(公告)号：US20080001610A1

    公开(公告)日：2008-01-03

    申请号：US11464675

    申请日：2006-08-15

    Applicant: Yong-Chae Bae ,  Hee-Soo Kim ,  Hyun Lee ,  Yeon-Whan Kim ,  Doo-Young Lee

    Inventor： Yong-Chae Bae ,  Hee-Soo Kim ,  Hyun Lee ,  Yeon-Whan Kim ,  Doo-Young Lee

    IPC: G01R27/26

    CPC classification number: G01N27/223

    Abstract: Apparatus and method of water absorption for generator stator winding insulator using a cross capacitance are disclosed. The apparatus includes a sensor using a cross capacitance, and a water absorption testing unit for carrying out the water absorption test of the insulator of the stator winding of the power generator using the sensor. The apparatus determines whether the insulator absorbs water, according to thickness, using the cross capacitance, such that inferior winding is detected, a power plant is prevented from being suddenly stopped, costs for the maintenance are reduced, and the lifespan of the power generator is extended.

    Abstract translation: 公开了使用交叉电容的发电机定子绕组绝缘体的吸水装置和方法。 该装置包括使用交叉电容的传感器和用于使用该传感器执行发电机的定子绕组的绝缘体的吸水试验的吸水试验单元。 该装置根据厚度，使用交叉电容来测定绝缘体是否吸收水，使得检测到差的绕组，防止发电厂突然停止，维护成本降低，并且发电机的寿命为 延长

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