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公开(公告)号：KR101029292B1
公开(公告)日：2011-04-18
申请号：KR1020100074274
申请日：2010-07-30
Applicant: 한국전력공사
IPC: G01R31/08
CPC classification number: G01R31/083 , G01R31/11
Abstract: PURPOSE: An apparatus and a method for detecting the defected point of a cable are provided to improve the accuracy of a detecting operation using simple equipment. CONSTITUTION: A pulse generator(230) applies a pulse signal to a cable. A waveform measuring unit(220) measures a first signal including the pulse signal or the reflective wave signal with respect to the pulse signal. A signal extracting unit(210) implements wavelet transformation with respect to the first signal in order to extract approximate signal based on each step. A second signal is extracted by multiplying approximate signals on each step. A detecting unit(240) extracts the time difference of first waveform generating time and second waveform generating time based on the second signal in order to detect the location of defected point of the cable.
Abstract translation: 目的：提供一种用于检测电缆缺陷点的设备和方法，以提高使用简单设备的检测操作的准确性。 构成：脉冲发生器（230）向电缆施加脉冲信号。 波形测量单元（220）相对于脉冲信号测量包括脉冲信号或反射波信号的第一信号。 信号提取单元（210）相对于第一信号执行小波变换，以便基于每个步骤提取近似信号。 通过在每个步骤上乘以近似信号来提取第二信号。 检测单元（240）基于第二信号提取第一波形生成时间和第二波形生成时间的时间差，以检测电缆的缺陷点的位置。
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公开(公告)号：KR200339286Y1
公开(公告)日：2004-01-28
申请号：KR2020030033487
申请日：2003-10-25
Applicant: 한국전력공사
IPC: G01R31/12
Abstract: 본 고안은 가공 송전선 중 ACSR(Aluminum Conductors Steel Reinforced : 이하 ACSR 이라고 함) 전선에 산불이 발생한 경우 와전류 센서에 의해 전선 내부의 알루미늄선과 아연도금 강선의 아연도금의 소실정도 및 양상을 추정함으로써 선로의 상태를 파악하여 산불에 열화된 가공 송전전의 수명을 평가할 수 있는 화염열화정도 측정하는 센서장치에 관한 것이다.
이를 위한 본 고안의 센서장치는, 다수의 상용 커넥터(Connector)와 플랫 케이블(Flat Cable)을 이용하여 제작된 ACSR 전선에 탈착이 용이한 다층의 분할 관통형 센서(도 2a 및 도 2b) 및 미리 삽입된 내부도체 및 코일을 가진 브리지방식의 측정회로(도 3)를 이용하는 화염열화측정부, 이 화염열화 측정부에 고주파 교번 자속을 공급하기 위한 D/A 변환부, 측정된 신호를 처리하기 위한 마이크로프로세서부, 전력선 도체상에서의 전진 및 후진 구동을 위한 모터제어부, 지상으로 측정데이터 전송을 위한 무선통신부, 그리고 전송된 데이터를 사용자의 선택에 따라 출력을 하는 출력부로 구성된 것을 특징으로 한다.
따라서, 본 고안은 ACSR 전선의 환경에 따른 자연 상태의 알루미늄 단면적 변화와 아연 부식정도를 측정하는 기존의 전선부식 탐상기를 개량한 것으로, 주변에 산불이 발생하여 단시간에 강도가 센 화염에 ACSR 전력선이 노출될 때 생기는 전선의 열화 정도를 정량화할 수 있도록 알고리즘을 개발하고, 측정시의 감도를 개선할 수 있도록 기존의 단층형 분할 관통형 센서와 정전류 직접공급 방식의 측정회로를 개선한 것이다.-
公开(公告)号：KR1020020027662A
公开(公告)日：2002-04-15
申请号：KR1020000058090
申请日：2000-10-04
Applicant: 한국전력공사
IPC: G01N21/62
Abstract: PURPOSE: A method and apparatus is provided to easily monitor the saline contamination of insulator, while simplifying configuration and reducing cost and labor. CONSTITUTION: A method comprises a first step of emitting a laser beam to an external prism(21) from among two prisms having 100 percent reflecting surfaces and which are arranged to face with each other; and a second step of automatically detecting the saline contamination attached to the surface of the prism by detecting the change of amount of received beam. An apparatus comprises a laser emitting unit; a prism sensor including an external prism having a reflecting surface exposed to the ambient air, and an internal prism(22) opposed to the external prism; a light receiving unit for receiving the laser beam reflected from the prism sensor; a measuring unit(40) for measuring and comparing data of the laser emitting unit and the light receiving unit; an outer box(70) for accommodating each element; a wire communication circuit(50) for connecting the measuring unit and a monitoring unit(60); and the monitoring unit for receiving the measuring and comparison result of the measuring unit through the wire communication circuit.
Abstract translation: 目的：提供了一种方法和设备，可以方便地监测绝缘子的盐水污染，同时简化配置并降低成本和人力。 构成：一种方法包括：从具有100％反射面的两个棱镜中将激光束发射到外部棱镜（21）并且彼此相对配置的第一步骤; 以及第二步骤，通过检测接收光束的量的变化来自动检测附着到棱镜表面的盐水污染物。 一种装置包括激光发射单元; 棱镜传感器，包括具有暴露于环境空气的反射表面的外部棱镜和与外部棱镜相对的内部棱镜; 光接收单元，用于接收从棱镜传感器反射的激光束; 测量单元（40），用于测量和比较激光发射单元和光接收单元的数据; 用于容纳每个元件的外箱（70） 用于连接测量单元和监视单元（60）的有线通信电路（50）; 以及监视单元，用于通过有线通信电路接收测量单元的测量和比较结果。
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公开(公告)号：KR102231150B1
公开(公告)日：2021-03-24
申请号：KR1020190135266
申请日：2019-10-29
Applicant: 한국전력공사
IPC: G01R31/12 , G01R31/14 , G01R29/08 , G01R23/167 , G08B21/18
Abstract: 본발명의부싱진단시스템은, 외부의부싱모니터링장치로부터모니터링신호를수신하는부싱모니터링신호취득블록; 상기수신된모니터링신호에서전력주파수대역의전류신호와, 열화방전신호의고주파대역의전류신호를분리하는신호처리블록; 및상기전력주파수대역의전류신호를분석하여변압기전류누설여부를판단하고, 상기고주파대역의전류신호를부근의부분방전진단정보와연동하여부싱의결함여부및 정도를진단하는진단블록을포함할수 있다.
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公开(公告)号：KR1020180032978A
公开(公告)日：2018-04-02
申请号：KR1020160122361
申请日：2016-09-23
Applicant: 한국전력공사
CPC classification number: H02J3/01 , H02J3/36 , H02M1/14 , H02M7/483 , Y02E40/22 , Y02E40/40 , Y02E60/60 , H02J2003/365
Abstract: 본발명의일 실시예에따른전압형컨버터는교류전력을직류전력으로또는직류전력을교류전력으로변환하는전압형컨버터로서, 제1 직류선로및 제2 직류선로와연결되는적어도하나의밸브; 및상기밸브와연결된하이브리드능동필터를포함하고, 상기하이브리드능동필터는, 상기밸브와직렬로결합된직렬변압기; 상기직렬변압기의양단에연결된수동필터부; 순환전류억제를위한보상전압을상기직렬변압기에인가하는전압형인버터; 및상기전압형인버터를제어하는제어기를포함한다.
Abstract translation: 根据本发明实施例的电压源转换器是用于将交流电力转换成直流电力或直流电力转换成交流电力的电压源转换器，并且包括：连接到第一直流线路的至少一个阀以及 第二直流线路; 以及连接到所述阀的混合有源滤波器，其中所述混合有源滤波器包括：与所述阀串联耦合的串联变压器; 连接到串联变压器的两端的无源滤波器单元; 电压源逆变器，用于施加用于抑制流向串联变压器的环流的补偿电压; 以及用于控制电压源逆变器的控制器。
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Patent Agency Ranking
公开(公告)号：KR1020150037022A
公开(公告)日：2015-04-08
申请号：KR1020130116183
申请日：2013-09-30
Applicant: 한국전력공사
Abstract: 본발명은초고압케이블의뇌임펄스전압시험을위한시험전류차단장치에관한것으로, 초고압케이블의뇌임펄스전압시험시, 상기초고압케이블의온도를상승시키기위한시험전류를공급하고, 상기뇌임펄스인가시상기초고압케이블로부터역으로유입되는뇌임펄스전압을차단시키는차단부와, 상기뇌임펄스전압시험시, 상기초고압케이블의온도를상승시키기위하여상기케이블에전류를공급할때, 초기돌입전류에의해발생할수 있는개폐과전압으로부터서지를제거하여상기초고압케이블을보호하기위한보호부및 상기시험전류의공급과상기뇌임펄스전압을차단하기위하여상기차단부를원격으로제어하는조작부를포함한다.
Abstract translation: 本发明涉及一种用于在高压电缆的雷电冲击耐受电压测试期间停止测试电流的装置，包括：阻塞部分，用于提供用于提高高压电缆的温度的测试电流，并阻止从所述高压电缆反向流动的脑冲击电压 高压电缆测试高压电缆的脑冲击电压; 保护部件，通过在向电缆提供电流时，通过消除浪涌来切换过电压来保护高压电缆，这可以通过初始浪涌电流产生，以便在测试脑脉冲电压时提高高压电缆的温度; 以及控制部分，以控制阻塞部分提供测试电流并阻止脑冲击电压。
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公开(公告)号：KR1020140037366A
公开(公告)日：2014-03-27
申请号：KR1020120102796
申请日：2012-09-17
Applicant: 한국전력공사
Abstract: The present invention relates to an apparatus and a method for calculating a deformation rate of a cable in a duct which comprise: a video acquisition unit which a plurality thereof is installed on the upper side of the duct and acquires a video image of the cable in the duct; a data analysis unit which calculates displacement depending on change in a position of the cable by analyzing the first video image and a current video image of a cable in the duct, thereby visualizes a position of the cable; and a calculation unit of a cable deformation rate which calculates a snake width and a snake pitch of the cable based on the position of the visualized cable and applies temperature variation of the cable to the calculated snake width and the snake pitch, thereby calculates the cable deformation rate. [Reference numerals] (110) Video acquisition unit; (120) Temperature detecting sensor unit; (130) First data collecting unit; (140) Second data collecting unit; (150) Data storage unit; (161) Left and right displacement calculation unit; (163) Up and down displacement calculation unit; (164) Mapping unit; (165) Visualizing unit; (171) First calculation unit; (173) Second calculation unit; (180) Alarming unit
Abstract translation: 本发明涉及一种用于计算管道中的电缆的变形率的装置和方法，包括：视频采集单元，其多个安装在管道的上侧，并获取电缆的视频图像 管道 数据分析单元，其通过分析管道中的电缆的第一视频图像和当前视频图像来计算电缆位置的变化，从而可视化电缆的位置; 以及电缆变形率的计算单元，其基于可视化电缆的位置来计算电缆的蛇宽度和蛇节距，并且将电缆的温度变化应用于计算的蛇宽度和蛇音距，从而计算电缆 变形率。 （附图标记）（110）视频采集单元; （120）温度检测传感器单元; （130）第一数据收集单元; （140）第二数据采集单元; （150）数据存储单元; （161）左右位移计算单元; （163）上下位移计算单元; （164）映射单元; （165）可视化单元; （171）第一计算单位; （173）第二计算单位; （180）报警单元
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公开(公告)号：KR1020140033710A
公开(公告)日：2014-03-19
申请号：KR1020120099880
申请日：2012-09-10
Applicant: 한국전력공사
Abstract: The present invention relates to an apparatus and a method for measuring a movement strain rate of a cable in a conduit. The apparatus comprises: a displacement detection sensor provided on the outside of a conduit and detecting position displacement of the cable in the conduit; a temperature detection sensor provided on the outside of the conduit and detecting temperature variation of the cable in the conduit; and a cable strain rate measuring unit measuring snake width and snake pitch of the cable using position displacement detected by the displacement detection sensor, and measuring a movement strain rate of the cable by applying temperature variation detected by the temperature detection sensor to the calculated snake width and the snake pitch of the cable. [Reference numerals] (111) First displacement detection sensor; (112) Second displacement detection sensor; (123) Temperature detection sensor; (130) Data collecting unit; (140) Data gathering unit; (150) Data storing unit; (161) First measuring unit; (162) Second measuring unit; (170) Display unit; (180) Alarming unit
Abstract translation: 本发明涉及一种用于测量导管中电缆的运动应变速率的装置和方法。 该装置包括：设置在管道外侧的位移检测传感器，并检测电缆在导管中的位置位移; 温度检测传感器，其设置在所述导管的外侧，并且检测所述导管中的所述电缆的温度变化; 以及电缆应变率测量单元，使用由位移检测传感器检测到的位置位移来测量电缆的蛇宽度和蛇节距，并且通过将由温度检测传感器检测的温度变化应用于计算出的蛇宽度来测量电缆的运动应变率 和电缆的蛇音。 （附图标记）（111）第一位移检测传感器; （112）第二位移检测传感器; （123）温度检测传感器; （130）数据采集单元; （140）数据采集单元; （150）数据存储单元; （161）第一测量单元; （162）第二测量单元; （170）显示单元; （180）报警单元
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公开(公告)号：KR1020140029047A
公开(公告)日：2014-03-10
申请号：KR1020120096698
申请日：2012-08-31
Applicant: 한국전력공사
IPC: H02H9/02
Abstract: The present invention relates to a device for reducing overvoltage in a single point bonded section of an underground transmission system comprising a detection unit and a bypass switch. The detection unit is connected to a sheath voltage limiter in parallel and detects current flowing between the sheaths of the transmission line. The sheath voltage limiter is installed in a single point bonded section of a transmission line. The bypass switch operates when the current flowing between the sheaths is over a reference value and forms a return path of fault current. The present invention is provided to secure the return path of the fault current in the single point bonded section of the underground transmission system by using the excitation feature of a driving coil, thereby effectively restricting the overvoltage generated in the single point bonded section and minimizing transmission loss when normally operated according to the impedance features of the driving coil.
Abstract translation: 本发明涉及一种降低地下传输系统单点接合部分过电压的装置，包括检测单元和旁路开关。 检测单元并联连接到护套电压限制器，并检测在传输线的护套之间流动的电流。 护套电压限制器安装在传输线的单点接合部分。 当护套之间的电流超过参考值并且形成故障电流的返回路径时，旁路开关工作。 提供本发明，通过使用驱动线圈的激励特征来确保地下传输系统的单点接合部分中的故障电流的返回路径，从而有效地限制在单点接合部分中产生的过电压并使传输最小化 根据驱动线圈的阻抗特性正常工作时的损耗。
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公开(公告)号：KR1020130003436A
公开(公告)日：2013-01-09
申请号：KR1020110064803
申请日：2011-06-30
Applicant: 한국전력공사
Abstract: PURPOSE: A device for measuring the lateral pressure of a cable installed in a duct is provided to confirm the existence of defects of the cable in advance when installing the cable by accurately measuring the lateral pressure generated by installing the cable with tensile force at a desired speed, thereby verifying the stability of a cable state. CONSTITUTION: A device(100) for measuring the lateral pressure of a cable(20) installed in a duct(10) comprises an upper frame, a cable support(120), a rail guide, and a load cell(150). The cable is placed on the upper frame. The cable support has predetermined curvature and supports a lateral surface of the cable. The rail guide is joined to the lower part of the upper frame and facilitates the movement of the upper frame according to tensile force added on the cable. The load cell measures a side load of the cable supported by the cable support according to the movement of the upper frame.
Abstract translation: 目的：提供一种用于测量安装在管道中的电缆的侧向压力的装置，用于通过精确测量通过将拉伸力安装在所需电缆上而产生的侧向压力，来预先确认电缆的缺陷。 速度，从而验证电缆状态的稳定性。 构造：用于测量安装在管道（10）中的电缆（20）的侧向压力的装置（100）包括上框架，电缆支撑件（120），导轨引导件和称重传感器（150）。 电缆放置在上框架上。 电缆支架具有预定的曲率并且支撑电缆的侧表面。 轨道引导件连接到上框架的下部，并且根据加在电缆上的拉力促使上框架的移动。 负载传感器根据上框架的运动测量由电缆支架支撑的电缆的侧向载荷。
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