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公开(公告)号：KR100911724B1
公开(公告)日：2009-08-10
申请号：KR1020070070322
申请日：2007-07-13
Applicant: 한국전기연구원
Abstract: 본 발명은 휴대형 온습도 및 절연유중 수분농도 측정장치에 관한 것으로서, 더욱 상세하게는 마이크로히터가 부착된 상대습도측정센서를 이용하여 유입식 전력기기로부터 채취된 절연유중의 수분농도와 온도 및 상대습도를 겸용으로 측정하는 휴대형 온습도 및 절연유중 수분농도 측정장치에 관한 것이다.
이를 위해, 본 발명은 절연유 중 수분과 반응하여 상대습도를 측정하는 상대습도측정센서; 상기 상대습도측정센서의 온도를 일정하게 유지하도록 상대습도측정센서의 하부에 부착된 마이크로히터; 상기 상대습도측정센서 및 마이크로히터에 전원을 공급하는 전원공급부; 상기 측정된 상대습도로부터 수분농도를 결정하는 관계식이 입력되어 있는 신호처리부; 상기 마이크로히터의 온도를 제어하는 온도제어부; 및 상기 결정된 절연유 중 수분농도를 표시하는 표시창;를 포함하여 구성되고, 상기 상대습도측정센서를 절연유에 담근 후 상기 상대습도측정센서의 온도를 일정하게 유지하여 유중 수분농도를 결정하는 것을 특징으로 하는 휴대형 온습도 및 절연유중 수분농도 측정장치를 제공한다.
상대습도측정센서, 마이크로히터, 신호처리부, 온도제어부, 표시창, 수분농도-
公开(公告)号：KR100817105B1
公开(公告)日：2008-03-26
申请号：KR1020060086601
申请日：2006-09-08
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: 본 발명은 다수의 세라믹 소체들을 직렬로 연결시켜 직렬 연결수량 조정에 따라 비례하는 높은 전압에 적용이 가능 함으로써 고전압 전기기기의 운전중 부분방전 측정에 폭넓게 사용할 수 있으며, 고압기기의 부분방전 측정용으로 높은 유전정접으로 인한 장기간 사용시 열폭주 현상에 의한 파손의 위험가능성을 경감시킬 수 있도록 한 열적안정성을 지닌 세라믹 커플러에 관한 것이다.
본 발명은, 기존의 세라믹 소체의 주원료인 높은 유전율을 갖고 있지만 안정된 온도특성을 보유한 SrTiO
3 계를 이용하는 대신, 세라믹 컴파운드로서 바륨 티타네이트(BaTiO
3 )를 주재료로 구성하고, 온도에 따른 유전율의 변화를 최소화하기 위하여 마그네슘 티타네이트(MgTiO
3 ) 억제제를 기본 첨가재로 하여 소성하고, 이를 다중 강화형으로 제조하며, 세라믹 소체의 배합재로 센서의 주요 특성중 하나인 절연 내력을 보강하기 위하여 표면의 열린 기공과 내부의 닫힌 기공을 극소화하고 소결온도를 저온화하기 위하여 매트릭스 역할을 하는 SiO
2 와 Bi
2 O
3 를 조합하여 제조하며,에폭시 수지 등을 세라믹 소체 외부에 직접 성형 압출하여 세라믹 소체를 보호하면서, 에폭시 외함에 연면 방전 방지 및 연면 섬락 방지를 위하여 연면 누설길이를 늘이는 구조를 갖는 것을 특징으로 한다.
세라믹커플러, 부분방전, 세라믹소체, 회전기기, 열적안정성, 부분방전검출, 운전중-
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公开(公告)号：KR1020040075190A
公开(公告)日：2004-08-27
申请号：KR1020030010663
申请日：2003-02-20
Applicant: 한국전기연구원
IPC: H05K9/00
CPC classification number: G01R29/08 , H05K9/0069
Abstract: PURPOSE: A shielding apparatus is provided to effectively measure the partial discharge by compensating for the noise through the balanced bridge system. CONSTITUTION: A shielding apparatus comprises a shielding unit(100). The shielding unit includes a shielding chamber(110) for accommodating a power device(10) as an inspection object, wherein the shielding chamber includes an outer shielding layer(110a) having a grounded end, and an inner shielding layer(110b) electrically insulated from the outer shielding layer; a first coaxial cable(120a) having an end connected to the power device, a shielding line(121a) grounded to the inner shielding layer of the shielding chamber, and the other end connected to a British national connector(BNC) terminal(160); a coupling capacitor(130) for performing a charging operation in accordance with the partial discharge generated from the power device, and detecting and outputting a partial discharge signal by discharging; and a second coaxial cable(120b) having an end connected to the coupling capacitor, a shielding line(121b) grounded to the inner shielding layer of the shielding chamber, and the other end connected to the BNC terminal.
Abstract translation: 目的：提供屏蔽装置，通过平衡桥系统补偿噪声，有效地测量局部放电。 构成：屏蔽装置包括屏蔽单元（100）。 屏蔽单元包括用于容纳作为检查对象的电力设备（10）的屏蔽室（110），其中屏蔽室包括具有接地端的外屏蔽层（110a）和电绝缘的内屏蔽层（110b） 从外屏蔽层; 具有连接到所述功率器件的端部的第一同轴电缆（120a），与所述屏蔽室的所述内屏蔽层接地的屏蔽线（121a），以及连接到英国国家连接器（BNC）端子（160）的另一端， ; 耦合电容器，用于根据从功率器件产生的局部放电进行充电操作，并通过放电来检测和输出局部放电信号; 以及具有连接到所述耦合电容器的端部的第二同轴电缆（120b），与所述屏蔽室的所述内屏蔽层接地的屏蔽线（121b），并且所述另一端连接到所述BNC端子。
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公开(公告)号：KR1020040075188A
公开(公告)日：2004-08-27
申请号：KR1020030010660
申请日：2003-02-20
Applicant: 한국전기연구원
IPC: G01R31/12
Abstract: PURPOSE: An on-driving partial discharge measurement sensor embedded with a filter is provided to improve reliability of partial discharge measurement. CONSTITUTION: A contact type partial discharge measurement sensor(40c) includes an insulated thin plate(41c), and a partial discharge signal line(42c) which is installed along a center of one side of the insulated thin plate and outputs a partial discharge signal generated in a winding of a corresponding high voltage rotator by being connected to a lead line of a coaxial cable. A shied(43c) is insulated from the partial discharge signal line electrically and blocks external electromagnetic field affecting sensing sensitivity. And a filter(45c) adjusts a frequency band of a partial discharge detection signal induced in the partial discharge signal line.
Abstract translation: 目的：提供嵌入式滤波器的驱动式局部放电测量传感器，以提高局部放电测量的可靠性。 构成：接触型局部放电测量传感器（40c）包括绝缘薄板（41c）和局部放电信号线（42c），其沿绝缘薄板的一侧的中心安装，并输出局部放电信号 通过连接到同轴电缆的引线而在对应的高压旋转器的绕组中产生。 屏蔽（43c）与局部放电信号线电绝缘，并阻止影响感测灵敏度的外部电磁场。 并且，滤波器（45c）调整在局部放电信号线中感应出的局部放电检测信号的频带。
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Patent Agency Ranking
公开(公告)号：KR1020040075187A
公开(公告)日：2004-08-27
申请号：KR1020030010659
申请日：2003-02-20
Applicant: 한국전기연구원
IPC: G01R31/08
Abstract: PURPOSE: An on-driving partial discharge measurement sensor is provided which is installed in a winding terminal of an impregnated insulation high voltage sensor is provided to measure partial discharge signal selectively. CONSTITUTION: An insulated thin plate(41b) is formed in a shape of so that it is installed in a winding terminal of an impregnated insulation high voltage rotator. A partial discharge signal line(42b) is installed around a center of the shape of the insulated thin plate, and is connected to a lead line of a coaxial cable to output a partial discharge signal generated in a winding of the high voltage rotator to the partial discharge measurement device.
Abstract translation: 目的：提供一种安装在浸渍式绝缘高压传感器的绕组端子上的驱动式局部放电测量传感器，用于选择性地测量局部放电信号。 构成：绝缘薄板（41b）形成为使其安装在浸渍绝缘高压旋转器的绕组端子的形状。 局部放电信号线（42b）安装在绝缘薄板形状的中心附近，并连接到同轴电缆的引线，以将在高压旋转器的绕组中产生的局部放电信号输出到 局部放电测量装置。
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公开(公告)号：KR1020160059826A
公开(公告)日：2016-05-27
申请号：KR1020140161863
申请日：2014-11-19
Applicant: 한국전기연구원
IPC: G01R31/12
CPC classification number: G01R31/12 , G01R31/1209 , G01R31/1218
Abstract: 본발명은부분방전측정신호처리방법에관한것으로서, 전력기기를진단함에있어부분방전측정신호의처리를위한데이터통신속도및 데이터저장효율을개선하여부분방전진단장치의동작성능을향상시킬수 있도록하는부분방전측정신호처리방법이개시된다. 이에, 본발명의실시예에따르면, 전력기기를진단하기위해각 샘플링시각에있어서의측정값을가지는부분방전파형을측정하는단계와; 기설정된샘플링구간에포함되는각 샘플링시각에있어서의측정값의크기들에대한평균값을계산하는단계와; 상기샘플링구간에있어서상기평균값이하가되는측정값을제거하여노이즈가제거된부분방전파형을획득하는단계와; 상기부분방전파형에대한상기샘플링구간에서의이동평균을구하여최종파형을획득하는단계; 및상기최종파형에대한피크검출을수행하여수행된결과에따른피크값들을추출하는단계;를포함하는것을기술적요지로한다.
Abstract translation: 本发明涉及局部放电测量信号处理方法。 公开了通过在诊断电力设备时提高用于处理局部放电测量信号的数据通信速度和数据存储效率来提高局部放电诊断装置的操作性能的局部放电测量信号处理方法。 根据本发明的实施例，技术要点包括：测量在每个采样时间具有测量值的部分放电波形以诊断电力设备的步骤; 计算包括在预定采样部分中的每个采样时间的测量值的大小的平均值的步骤; 获取部分放电波形的步骤，其中通过去除低于采样部分中的平均值的测量值来去除噪声; 通过计算采样部分中关于局部放电波形的移动平均值来获得最终波形的步骤; 以及通过对最终波形执行峰值检测来提取取决于执行结果的峰值的步骤。
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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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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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