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公开(公告)号：KR1020030051076A
公开(公告)日：2003-06-25
申请号：KR1020010081976
申请日：2001-12-20
Applicant: 한국전기연구원 , 주식회사 선진전자기술
IPC: G01R31/12
Abstract: PURPOSE: A method for measuring a partial discharge during the drive in the stator winding of a high pressure rotator is provided to economically and reliably monitor the insulation status in the stator winding of the high pressure rotator. CONSTITUTION: A method for measuring a partial discharge during the drive in the stator winding of a high pressure rotator includes the steps of: detecting the zero point and dividing(S304) the partial discharge signal inputted thereto into a positive(+) and a negative(-) partial discharge signals, dividing(S305) the divided signals into dual paths, detecting by dividing one set period by a predetermined plurality of unit intervals on the phase axis in response to each of the signal on the dual paths, detecting/maintaining(S307) the maximum value by the divided period unit based on the detected phase, implementing(S308) the analog to digital conversion therefor, and alternately performing the above step to each of the signals on the dual path on the phase axis and analyzing the insulation status of the stator winding based on the converted digital data.
Abstract translation: 目的：提供一种在高压旋转器的定子绕组的驱动期间测量局部放电的方法，以经济且可靠地监测高压旋转器的定子绕组中的绝缘状态。 构成：用于测量高压旋转器的定子绕组中的驱动期间的局部放电的方法包括以下步骤：检测零点并将输入的部分放电信号划分为正（+）和负 （ - ）部分放电信号，将划分的信号划分为（S305）为双路径，响应于双路径上的每个信号，将相位轴上的预定多个单位间隔分开一个设定的周期，检测/维持 （S307）基于检测到的相位的分频周期单位的最大值，实现（S308）其模拟数字转换，并且对相位轴上的双路径上的每个信号交替执行上述步骤，并分析 基于转换的数字数据定子绕组的绝缘状态。
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公开(公告)号：KR101604443B1
公开(公告)日：2016-03-25
申请号：KR1020140143121
申请日：2014-10-22
Applicant: 한국전기연구원
Abstract: 본발명은부분방전신호를검출하기위한써지펄스의최대전압을자동으로측정하여적절한크기로자동조절하고, 측정된파형을분석하여부분방전개시전압을자동으로획득할수 있도록하는전동기의부분방전개시전압자동측정장치를제공하는것을목적으로하며, 이러한목적달성을위한본 발명은, 소정전압레벨의써지펄스를생성하여전동기권선에인가하는써지펄스생성부; 상기써지펄스가전동기권선에인가됨에따라상기전동기로부터검출되는전기적신호를획득하는센서부; 상기전기적신호에기초하여부분방전의발생여부를판단하는부분방전판단부; 상기부분방전의발생여부에따라상기써지펄스생성부의전압레벨을조절하는전압레벨조절부; 및상기써지펄스발생부와부분방전판단부및 전압레벨조절부에세팅되는기초값을설정하고, 상기부분방전판단부에서측정되는파형의최대전압과상기써지펄스의전압레벨을기초로부분방전개시전압을확정하는제어부;를포함하는것을기술적요지로한다.
Abstract translation: 本发明提供一种用于自动测量电动机的局部放电起始电压（PDIV）的装置，其自动测量用于检测局部放电信号的浪涌脉冲的最大电压，自动将测量电压的大小调整为 适当的大小，并分析测量波形以自动获取PDIV。 为此，根据本发明的用于自动测量电机的PDIV的装置包括：浪涌脉冲发生单元，其产生具有一定电压电平的浪涌脉冲，并将浪涌脉冲施加到电动机绕组; 传感器单元，其根据所述电动机绕组的浪涌脉冲获取从所述电动机检测出的电信号; 局部放电确定单元，其基于所述电信号确定是否产生局部放电; 电压电平控制单元，其根据是否产生局部放电来控制浪涌脉冲发生单元的电压电平; 以及控制单元，其设置浪涌脉冲发生单元，局部放电确定单元和电压电平控制单元的默认值，并且基于由局部放电确定单元测量的波形的最大电压和电压来确定PDIV 浪涌脉冲的电平。
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公开(公告)号：KR101416626B1
公开(公告)日：2014-08-06
申请号：KR1020130069286
申请日：2013-06-17
Applicant: 한국전기연구원
Abstract: The present invention relates to a device for diagnosing a failure of an induction motor and a diagnosis method using the same. The device includes a zoom estimation of signal parameters via rotational invariance (ESPRIT) module which calculates an estimated number of failure-related frequencies and an estimated value for a failure-related frequency using a current signal generated by an induction motor; a size estimation module which estimates the size of the failure-related frequency using the estimated number of failure-related frequencies and the estimated failure-related frequency calculated by the zoom ESPRIT module; and a failure diagnosis module which determines a failure of the induction motor by comparing the size of the failure-related frequency estimated by the size estimation module and a failure threshold value. According to the present invention, by using the zoom ESPRIT technique, it is possible to diagnose a failure of an induction motor using the current signal of the motor more accurately than other failure diagnosis techniques and can simplify the circuit.
Abstract translation: 本发明涉及用于诊断感应电动机的故障的装置及其使用的诊断方法。 该装置包括通过旋转不变性（ESPRIT）模块对信号参数的变焦估计，该模块使用由感应电动机产生的电流信号来计算故障相关频率的估计数和故障相关频率的估计值; 尺寸估计模块，其使用所估计的故障相关频率的数量和由所述缩放ESPRIT模块计算的估计的故障相关频率来估计所述故障相关频率的大小; 以及故障诊断模块，其通过比较由所述尺寸估计模块估计的故障相关频率的大小和故障阈值来确定所述感应电动机的故障。 根据本发明，通过使用变焦ESPRIT技术，可以比其他故障诊断技术更精确地诊断电动机的电流信号，并且能够简化电路。
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公开(公告)号：KR1020140065803A
公开(公告)日：2014-05-30
申请号：KR1020120132709
申请日：2012-11-22
Applicant: 한국전기연구원
Abstract: The present invention relates to a device for detecting partial discharge in a power cable, which is installed outside a power cable sheath without transforming or removing the power cable sheath in order to safely and simply detect the partial discharge even when the power cable is operated at a high voltage. In other words, the objective of the present invention is to provide a device for detecting partial discharge which is arranged in any part to be measured in an XLPE power cable, comprises an insulator winded by a coil and external metal foil, and detects a magnetic field induced to the outside of a sheath layer of the power cable as a partial discharge pulse signal from the coil and the external metal foil. Therefore, the device for detecting partial discharge can safely and simply detect the partial discharge in every part of the power cable without transforming or removing the power cable sheath.
Abstract translation: 本发明涉及一种用于检测电力电缆中的局部放电的装置，其安装在电力电缆护套的外侧，而不需要改变或移除电力电缆护套，以便安全地简单地检测局部放电，即使电力电缆在 高电压。 换句话说，本发明的目的是提供一种用于检测局部放电的装置，该装置布置在XLPE电力电缆中要测量的任何部分中，包括由线圈和外部金属箔缠绕的绝缘体，并且检测磁性 作为来自线圈和外部金属箔的局部放电脉冲信号而引起电力电缆的护套层外侧的场。 因此，用于检测局部放电的装置可以安全且简单地检测电力电缆的每个部分的局部放电，而不需要转换或移除电力电缆护套。
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公开(公告)号：KR1020140053640A
公开(公告)日：2014-05-08
申请号：KR1020120119819
申请日：2012-10-26
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: A partial discharge detection method for high voltage power equipment according to the present invention is capable of effectively detecting a partial discharge of high voltage power equipment through signal coupling, as a non-contact type partial discharge detection unit is installed around an unclosed lead wire inside a distribution box of the high voltage power equipment. And the method is capable of effectively judging whether the high voltage power equipment is partially discharged or not, as the distribution box cuts off radiating external noise and is resistant to external noise to facilitate the detection of signals.
Abstract translation: 根据本发明的高压电力设备的局部放电检测方法能够通过信号耦合来有效地检测高压电力设备的局部放电，因为非接触型局部放电检测单元安装在未封闭的引线内部 高压电力设备配电箱。 该方法能够有效地判断高压电力设备是否部分放电，因为配电箱切断辐射外部噪声，并能抵抗外部噪声，便于信号的检测。
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Patent Agency Ranking
公开(公告)号：KR1020140004987A
公开(公告)日：2014-01-14
申请号：KR1020120072614
申请日：2012-07-04
Applicant: 한국전기연구원
CPC classification number: G01H1/003
Abstract: The present invention relates to a vibration signal analysis method for an electric motor. The main purpose of the present invention is to provide the vibration signal analysis method for the electric motor to be able to implement a critical value set for determining the deformity occurrence more accurately and easily while improving the accuracy of diagnosis results for damage detection of the electric motor. In order to achieve the purpose, the vibration signal analysis method of the electric motor includes a step of installing a vibration sensor which can measure an X-axis and a Y-axis vibration at the same time in a diagnosed vibrator, a step of obtaining vibration signals arising from the X-axis and Y-axis vibration signals of a target motor through the vibration sensor during the operation of the diagnosed motor, a step of calculating the deformity frequency obtained from a rotational frequency of a diagnosed electric motor obtained using the X-axis and Y-axis vibration signals, and a step of obtaining data about peak values of the X-axis and the Y-axis vibration signals generated within a frequency range set to include the deformity frequency for the obtained X-axis and Y-axis vibration signals and diagnosing the deformity in the electric motor by comparing the data with a threshold value.
Abstract translation: 本发明涉及电动机的振动信号分析方法。 本发明的主要目的是提供一种电动机的振动信号分析方法，能够更准确，容易地实现用于确定畸形发生的临界值，同时提高电动机的损伤检测诊断结果的准确性 发动机。 为了达到这个目的，电动机的振动信号分析方法包括在诊断出的振动器中同时安装能够测量X轴和Y轴振动的振动传感器的步骤，获得 在诊断出的电动机的操作期间通过振动传感器从目标电动机的X轴和Y轴振动信号产生的振动信号，计算从使用该电动机获得的诊断电动机的转速得到的变形频率的步骤 X轴和Y轴振动信号，以及获得关于在设定为包括所获得的X轴和Y的变形频率的频率范围内产生的X轴和Y轴振动信号的峰值的数据的步骤 通过将数据与阈值进行比较来诊断电动机的畸变。
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公开(公告)号：KR101298972B1
公开(公告)日：2013-08-23
申请号：KR1020110126499
申请日：2011-11-30
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: 본 발명은 간단하고 안전하게 설치하여 측정하고, 측정의 감도를 높이고 단파 대역의 동작 상한 주파수를 극 초단파까지 확장시킨 비접촉식 부분 방전 검출장치에 관한 것이다.
본 발명은 신호 도전체가 부분 방전을 검출하기 위하여 전력기기의 리드에 설치되며, 상기 리드로부터의 부분 방전 펄스가 전자기적으로 유도되는 한편, 이렇게 유도된 신호를 검출장치의 테이퍼 형태의 출력부를 통하여 최소화된 왜곡으로 계측기로 전송되도록 하는 검출 방식으로 이루어진 비접촉식 부분 방전 검출장치를 제공한다.-
公开(公告)号：KR1020120124569A
公开(公告)日：2012-11-14
申请号：KR1020110042281
申请日：2011-05-04
Applicant: 한국전기연구원
Abstract: PURPOSE: A device for measuring the partial discharge of a high voltage rotor and a measuring method thereof is provided to accurately check an abnormal state of stator windings by accurately dividing the polarity of a partial discharge signal generated in a high voltage rotor. CONSTITUTION: A receiving unit receives an original partial discharge signal generated from a high voltage rotor(S110). A channel unit measures the received partial discharge signal and inverts the partial discharge signal to measure the same(S120). A peak value extracting unit extracts a first peak value and a second peak value from the signal measured by the channel unit(S130). A signal polarity determining unit determines the polarity of the partial discharge signal by using the first and the second peak values(S140). [Reference numerals] (AA) Start; (BB) Extracting the first peak value; (CC) Extracting the second peak value; (DD) Comparator; (EE) Setting the polarity of a partial discharge signal; (FF) Outputting; (GG) Finish; (S110) Original partial discharge signal receiving unit; (S121) Measuring a partial discharge signal; (S122) Measuring an inverted partial discharge signal
Abstract translation: 目的：提供一种用于测量高压转子的局部放电的装置及其测量方法，以通过精确地分离在高压转子中产生的局部放电信号的极性来精确地检查定子绕组的异常状态。 构成：接收单元接收从高电压转子产生的原始局部放电信号（S110）。 通道单元测量接收到的局部放电信号，并将该部分放电信号反相进行测量（S120）。 峰值提取单元从由信道单元测量的信号中提取第一峰值和第二峰值（S130）。 信号极性确定单元通过使用第一和第二峰值来确定局部放电信号的极性（S140）。 （附图标记）（AA）开始; （BB）提取第一个峰值; （CC）提取第二个峰值; （DD）比较器; （EE）设置局部放电信号的极性; （FF）输出; （GG）完成; （S110）原始局部放电信号接收单元; （S121）测量局部放电信号; （S122）测量反向局部放电信号
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公开(公告)号：KR101172750B1
公开(公告)日：2012-08-14
申请号：KR1020100132317
申请日：2010-12-22
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: 본 발명은 아크쉴드에 전기적으로 접촉되는 세라믹 커플러를 이용하여 진공차단기의 전류차단기구에 대한 부분방전을 용이하게 측정할 수 있도록 한 진공차단기용 전류차단기구의 부분방전 측정장치 및 방법에 관한 것이다.
즉, 본 발명은 아크쉴드에 전기적으로 접촉되는 세라믹 커플러를 이용하여 전류차단기구의 정상 운전중에 중공관의 내부 압력상승으로 발생되는 부분방전을 측정하되, 전류차단기구의 중공관내 전극부와 아크쉴드 사이에 걸리는 전압의 크기를 크게 증가시켜서 전기 세기를 크게 증가시켜 줌으로써, 부분방전 측정에 따른 중공관내 압력상승 감지 범위를 넓혀줄 수 있고, 중공관내 압력 상승으로 발생하는 부분방전 크기를 크게 증가시켜 부분방전 측정감도를 향상시킬 수 있도록 한 진공차단기용 전류차단기구의 부분방전 측정장치 및 방법을 제공하고자 한 것이다.-
公开(公告)号：KR1020120070834A
公开(公告)日：2012-07-02
申请号：KR1020100132317
申请日：2010-12-22
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: PURPOSE: An apparatus and a method for measuring partial discharge of a current shield mechanism for a vacuum breaker are provided to easily measure partial discharge of a vacuum breaker to a current mechanism using a ceramic couple that electrically contacts an arc shield. CONSTITUTION: A movable electrode(214) and a fixed electrode(215) are arranged to contact each other inside a hollow tube(212). A metallic arc shield(217) is installed with a gap along the interior surface of the hollow tube. A metallic plate O-ring(211) fixes the arc shield to the hollow tube. A ceramic coupler(300) is connected through a metallic wire(330) to the metallic plate O-ring exposed out of the hollow tube. A partial discharge detecting device(350) is connected through a signal cable(340) to a partial discharge pulse extracting unit(320) of the ceramic coupler. A partial discharge measuring device(360) is connected through a signal cable to the output part of the partial discharge detecting device.
Abstract translation: 目的：提供一种用于测量用于真空断路器的电流屏蔽机构的局部放电的装置和方法，以便容易地使用与电弧屏蔽电接触的陶瓷耦合器将真空断路器局部放电到电流机构。 构成：可动电极（214）和固定电极（215）布置成在中空管（212）内部彼此接触。 金属电弧屏蔽（217）沿着中空管的内表面安装有间隙。 金属板O形环（211）将弧形屏蔽件固定到中空管。 陶瓷耦合器（300）通过金属线（330）连接到从中空管露出的金属板O形环。 局部放电检测装置（350）通过信号电缆（340）连接到陶瓷耦合器的局部放电脉冲提取单元（320）。 局部放电测量装置（360）通过信号电缆连接到局部放电检测装置的输出部分。
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