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1.发明授权Partial discharge measurement system and partial discharge measurement method by repeated impulse voltage 有权部分放电测量系统和部分放电测量方法通过重复脉冲电压公开(公告)号：US09322881B2
公开(公告)日：2016-04-26
申请号：US14384759
申请日：2013-03-13
CPC分类号： G01R31/343 , G01R19/0084 , G01R31/1272 , G01R31/14
摘要： An impulse voltage generator uses a predetermined rectangular waveform signal and a high voltage to generate an impulse voltage. The high voltage is obtained by boosting an instruction voltage of the rectangular waveform signal on a per-cycle basis. A partial discharge frequency calculation section receives detection signals based on partial discharges occurring in an object to be measured by the application of the impulse voltage and counts the detection signal on a per-cycle basis as a partial discharge frequency. An application voltage signal observation circuit observes an application voltage signal indicating the impulse voltage applied to the object to be measured. In a first cycle in which the partial discharge frequency reaches a specified frequency or more, a voltage value acquiring section sets, as a partial discharge starting voltage, the peak value of the voltage indicated by the application voltage signal output from the application voltage signal observation circuit.
摘要翻译： 脉冲电压发生器使用预定的矩形波形信号和高电压来产生脉冲电压。 通过在每个周期的基础上升高矩形波形信号的指令电压来获得高电压。 局部放电频率计算部分通过施加脉冲电压来接收基于在待测物体中发生的局部放电的检测信号，并以每周期为基础的检测信号作为局部放电频率进行计数。 施加电压信号观测电路观察表示施加到被测量物体的脉冲电压的施加电压信号。 在局部放电频率达到规定频率以上的第一周期中，电压值取得部将施加电压信号观测输出的施加电压信号所表示的电压的峰值设定为局部放电开始电压 电路。
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公开(公告)号：US10444273B2
公开(公告)日：2019-10-15
申请号：US15303936
申请日：2015-04-21
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION , Kabushiki Kaisha Toshiba , TOSHIBA INDUSTRIAL PRODUCTS AND SYSTEMS CORPORATION
发明人： Tomomi Ikegami , Tetsuo Yoshimitsu , Takayuki Sakurai , Tatsuya Hirose , Satoshi Hiroshima , Yuji Yamamoto
摘要： A partial discharge measurement device includes: an impulse voltage application unit; a measurement control unit; and first and second partial discharge detection unit. The measurement control unit includes: a first and a second detector level partial discharge counting unit; and a partial discharge resistance evaluation unit. Each of the first and the second detector level partial discharge counting units outputs a first or second detection signal when the first or second detection signal exceeds a predetermined specified value. The partial discharge resistance evaluation unit counts the number of occurrences of partial discharge based on an output from the first and second detector level partial discharge counting unit, and regards the impulse voltage value at which the count value has reached a predetermined value as a partial discharge inception voltage under the repeated impulse voltage application.
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3.发明申请PARTIAL DISCHARGE MEASUREMENT SYSTEM AND PARTIAL DISCHARGE MEASUREMENT METHOD BY REPEATED IMPULSE VOLTAGE 有权部分放电测量系统和部分放电测量方法由重复的脉冲电压公开(公告)号：US20150015303A1
公开(公告)日：2015-01-15
申请号：US14384759
申请日：2013-03-13
CPC分类号： G01R31/343 , G01R19/0084 , G01R31/1272 , G01R31/14
摘要： An impulse voltage generator uses a predetermined rectangular waveform signal and a high voltage to generate an impulse voltage. The high voltage is obtained by boosting an instruction voltage of the rectangular waveform signal on a per-cycle basis. A partial discharge frequency calculation section receives detection signals based on partial discharges occurring in an object to be measured by the application of the impulse voltage and counts the detection signal on a per-cycle basis as a partial discharge frequency. An application voltage signal observation circuit observes an application voltage signal indicating the impulse voltage applied to the object to be measured. In a first cycle in which the partial discharge frequency reaches a specified frequency or more, a voltage value acquiring section sets, as a partial discharge starting voltage, the peak value of the voltage indicated by the application voltage signal output from the application voltage signal observation circuit.
摘要翻译： 脉冲电压发生器使用预定的矩形波形信号和高电压来产生脉冲电压。 通过在每个周期的基础上升高矩形波形信号的指令电压来获得高电压。 局部放电频率计算部分通过施加脉冲电压来接收基于在待测物体中发生的局部放电的检测信号，并以每周期为基础的检测信号作为局部放电频率进行计数。 施加电压信号观测电路观察表示施加到被测量物体的脉冲电压的施加电压信号。 在局部放电频率达到规定频率以上的第一周期中，电压值取得部将施加电压信号观测输出的施加电压信号所表示的电压的峰值设定为局部放电开始电压 电路。
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公开(公告)号：US20140292382A1
公开(公告)日：2014-10-02
申请号：US14294237
申请日：2014-06-03
发明人： Hiroyuki Ogawa , Takayuki Sakurai , Tetsuo Yoshimitsu , Tatsuya Hirose , Satoshi Hiroshima , Masayuki Hikita , Masahiro Kozako , Takahisa Ueno
摘要： A signal generator generates a combined signal that is generated only in the period where supply of a pulse signal is effected, a pulse signal whose frequency is of a higher impulse repetition frequency than the frequency of the period setting signal and whose amplitude represents a voltage value that is lower than the high voltage HVDC value. A semiconductor switch accumulates electric charge on a capacitative element by means of the high voltage HVDC from the high voltage generator when the voltage value of the combined signal is lower than the set gate voltage value and generates an impulse voltage whose peak value is the value of the high voltage HVDC, by means of the electric charge that is discharged from the capacitative element when the voltage value of the combined signal exceeds the set gate voltage value.
摘要翻译： 信号发生器产生仅在实施脉冲信号供给的周期中产生的组合信号，其频率比周期设定信号的频率高的脉冲重复频率的脉冲信号，其振幅表示电压值 即低于高压HVDC值。 当组合信号的电压值低于设定的栅极电压值时，半导体开关借助于来自高电压发生器的高电压HVDC在电容元件上积累电荷，并产生峰值为 通过在组合信号的电压值超过设定的栅极电压值时从电容元件放电的电荷，产生高压HVDC。
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公开(公告)号：US09197201B2
公开(公告)日：2015-11-24
申请号：US14294237
申请日：2014-06-03
发明人： Hiroyuki Ogawa , Takayuki Sakurai , Tetsuo Yoshimitsu , Tatsuya Hirose , Satoshi Hiroshima , Masayuki Hikita , Masahiro Kozako , Takahisa Ueno
摘要： A signal generator generates a combined signal that is generated only in the period where supply of a pulse signal is effected, a pulse signal whose frequency is of a higher impulse repetition frequency than the frequency of the period setting signal and whose amplitude represents a voltage value that is lower than the high voltage HVDC value. A semiconductor switch accumulates electric charge on a capacitative element by means of the high voltage HVDC from the high voltage generator when the voltage value of the combined signal is lower than the set gate voltage value and generates an impulse voltage whose peak value is the value of the high voltage HVDC, by means of the electric charge that is discharged from the capacitative element when the voltage value of the combined signal exceeds the set gate voltage value.
摘要翻译： 信号发生器产生仅在实施脉冲信号供给的周期中产生的组合信号，其频率比周期设定信号的频率高的脉冲重复频率的脉冲信号，其振幅表示电压值 即低于高压HVDC值。 当组合信号的电压值低于设定的栅极电压值时，半导体开关借助于来自高电压发生器的高电压HVDC在电容元件上积累电荷，并产生峰值为 通过在组合信号的电压值超过设定的栅极电压值时从电容元件放电的电荷，产生高压HVDC。
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