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公开(公告)号：KR1020130041572A
公开(公告)日：2013-04-25
申请号：KR1020110105916
申请日：2011-10-17
Applicant: 한국전기연구원
IPC: G01R31/34 , G01R19/165 , G01H1/00 , G01K7/00
Abstract: PURPOSE: An online comprehensive condition diagnosing device for diagnosing a high pressure induction motor and a method thereof are provided to predict electrical and mechanical defects or malfunctions in advance by measuring a first phase current, vibration, a temperature, and a three phase partial discharge signal, thereby extending the lifetime of the induction motor and minimizing a ripple effect when the induction motor breaks down. CONSTITUTION: A current sensor(11) measuring currents in a high pressure induction motor(10), a vibration sensor(12) measuring vibration, a temperature sensor(13) measuring a temperature and a partial discharge sensor(14) measuring a three phase partial discharge are installed. Exact state monitoring and diagnosis of the induction motor are conducted after consecutively measuring each sensor signal, digitalizing data through a high speed A/D conversion(17), passing the same through an optimal diagnosis algorithm, and transmitting a diagnosis result to a remote monitoring diagnosis system through wired communications. [Reference numerals] (22) Computer; (AA) Wired communication;
Abstract translation: 目的：提供一种用于诊断高压感应电动机的在线综合状况诊断装置及其方法，用于通过测量第一相电流，振动，温度和三相局部放电信号预先预测电气和机械缺陷或故障 从而延长感应电动机的使用寿命，并使感应电动机故障时的纹波效应最小化。 构成：测量高压感应电动机（10）中的电流的电流传感器（11），测量振动的振动传感器（12），测量温度的温度传感器（13）和测量三相的局部放电传感器（14） 安装了局部放电。 感应电动机的状态监测和诊断是连续测量每个传感器信号后，通过高速A / D转换（17）数字化数据，通过最佳诊断算法，并将诊断结果发送到远程监控 诊断系统通过有线通信。 （附图标记）（22）计算机; （AA）有线通讯;
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公开(公告)号：KR1020110111829A
公开(公告)日：2011-10-12
申请号：KR1020100031107
申请日：2010-04-05
Applicant: 한국전기연구원
Abstract: 본 발명은 전동기의 결함 상태를 진단하기 위하여 작동 중인 전동기로부터 전류 신호 및 진동 신호 데이터를 획득한 뒤, 획득된 데이터로부터 전동기의 상태를 나타내는 특징값을 계산하고, 계산된 특징값을 이용하여 소정의 결함별 계산식을 통해 결함별 진단 파라미터를 계산한 뒤, 계산된 결함별 진단 파라미터를 각각의 결함별 임계치와 비교하여 각 결함별로 발생 유/무 및 경/중을 진단하도록 구성됨으로써, 전동기에서 발생한 다양한 종류의 결함 상태를 복합적으로 진단할 수 있고, 이를 통해 전동기의 효과적인 유지보수가 가능하도록 하는 전동기의 온-사이트 복합 결함 진단 방법에 관한 것이다.
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公开(公告)号：KR101531641B1
公开(公告)日：2015-07-06
申请号：KR1020130157804
申请日：2013-12-18
Applicant: 한국전기연구원
Abstract: 본발명은전력케이블의부분방전측정장치에관한것으로하나이상의전력케이블들의하나이상의접속부들에설치되어하나이상의전력케이블들의부분방전신호를감지하는하나이상의부분방전측정센서들, 하나이상의전력케이블들과이격설치되어하나이상의전력케이블들의외부로부터발생하는잡음을검출하는하나이상의외부노이즈검출용센서들, 하나이상의부분방전측정센서들과상기하나이상의외부노이즈검출용센서들이감지한신호를입력받아서잡음을제거하고, 입력받은신호의크기와파형의특성을분석하는하나이상의로컬유니트부들및 하나이상의로컬유니트부들로부터데이터를전송받아서부분방전발생여부와부분방전발생위치를측정하고, 하나이상의로컬유니트부들의동기화를지시하는메인유니트부를포함하는것을구성되는것을특징으로한다.
Abstract translation: 本发明涉及一种用于测量电力电缆的局部放电的设备，包括：一个或多个局部放电测量传感器，其安装在一个或多个电力电缆的至少一个连接单元中，并检测电力电缆的局部放电信号; 一个或多个外部噪声检测传感器，其与电力电缆分开安装以检测从电力电缆的外部产生的噪声; 至少一个本地单元部分，通过接收由局部放电测量传感器和外部噪声检测传感器检测到的信号来消除噪声，并分析输入信号的波形的大小和特性; 以及从单元部分接收数据以测量是否发生局部放电的主单元部分和部分放电的发生位置，并指示本地单元部分的同步。
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公开(公告)号：KR101410737B1
公开(公告)日：2014-06-24
申请号：KR1020120132709
申请日：2012-11-22
Applicant: 한국전기연구원
Abstract: 본 발명은 전력케이블 시스를 변형하거나 제거하지 않은 상태에서 전력케이블 시스의 외부에 설치하여 전력케이블의 고전압 운전 중에도 안전하고 간편하게 부분방전을 검출할 수 있도록 한 전력케이블용 부분방전 검출장치에 관한 것이다.
즉, 본 발명은 XLPE 전력케이블의 측정하고자 하는 어느 부분이라도 코일이 감겨진 절연체와 외부 금속박을 포함하는 부분방전 검출장치를 배치하여, 전력케이블의 시스층 외부로 유도된 자기장을 코일 및 외부 금속막에서 부분방전 펄스신호로 검출할 수 있도록 함으로써, 전력케이블의 시스를 변형하거나 제거하지 않은 상태에서 전력케이블의 어느 부분에서도 안전하고 간편하게 부분방전을 검출할 수 있는 전력케이블용 부분방전 검출장치를 제공하는데 그 목적이 있다.-
公开(公告)号：KR1020140069439A
公开(公告)日：2014-06-10
申请号：KR1020120136668
申请日：2012-11-29
Applicant: 한국전기연구원
Abstract: The purpose of the present invention is to provide a method for avoiding the detection of partial discharge reflected waves, which can increase the reliability of a signal analysis by analyzing a partial discharge original signal to be analyzed, by adjusting the mounting position of two sensors installed on a power cable and by setting the measurement time to avoid measurement of the reflected waves.
Abstract translation: 本发明的目的是提供一种避免局部放电反射波检测的方法，通过调节安装的两个传感器的安装位置，可以通过分析待分析的局部放电原始信号来提高信号分析的可靠性 并通过设置测量时间来避免测量反射波。
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Patent Agency Ranking
公开(公告)号：KR101214444B1
公开(公告)日：2012-12-21
申请号：KR1020110042281
申请日：2011-05-04
Applicant: 한국전기연구원
Abstract: 본발명은고전압회전기기의부분방전측정장치및 그측정방법에대한것으로서, 더욱상세하게는고전압회전기기의절연상태를부분방전신호의극성구분을통해진단하는부분방전측정장치에서수신된부분방전신호를그대로측정하는한편수신된부분방전신호를반전시켜서측정하는채널부를가지면서측정된각 신호들의피크값을추출· 비교함으로써, 부분방전신호의극성에대한분석의정확성을높이고, 잡음제거에활용하여신뢰성을높일수 있는고전압회전기기의부분방전측정장치및 그측정방법에관한것이다.
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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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