公开(公告)号：US20150054524A1

公开(公告)日：2015-02-26

申请号：US14451141

申请日：2014-08-04

Applicant: Hitachi, Ltd.

Inventor： Chie KOBAYASHI ,  Toshiaki ROKUNOHE ,  Yoshiharu WADA ,  Go KOBAYASHI ,  Ken OBAYASHI

IPC: G01R31/12 ,  G01R31/14 ,  G01R31/40

CPC classification number: G01R31/1227

Abstract: A partial discharge measurement device according to the present invention includes a frequency separation unit for separating a partial discharge signal which occurs in an apparatus under diagnosis and is detected by a sensor into the partial discharge signal and a main circuit voltage phase signal, an arithmetic device which receives the partial discharge signal and the main circuit voltage phase signal separated by the frequency separation unit and calculates a partial discharge signal synchronized with a main circuit voltage based on the partial discharge signal and the main circuit voltage phase signal, a power supply device for extracting a voltage obtained by dividing the main circuit voltage and supplying a power supply voltage to the arithmetic device, and a control unit for issuing an instruction for powering on or off at least the arithmetic device to the power supply device.

Abstract translation: 根据本发明的局部放电测量装置包括：频率分离单元，用于将在诊断中发生的并且由传感器检测到的局部放电信号分离成局部放电信号和主电路电压相位信号;运算器件 其接收由频率分离单元分离的局部放电信号和主电路电压相位信号，并且基于部分放电信号和主电路电压相位信号计算与主电路电压同步的局部放电信号;电源装置， 提取通过划分主电路电压而获得的电压并将电源电压提供给运算装置;以及控制单元，用于向至少一个运算装置发送接通或关闭供电装置的指令。