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公开(公告)号：WO2019083144A1
公开(公告)日：2019-05-02
申请号：PCT/KR2018/009811
申请日：2018-08-24
Applicant: 한국전력공사
CPC classification number: G01R31/083 , G01R31/088 , G01R31/11
Abstract: 본 발명은 지중케이블 고장위치 탐지 장치 및 그 방법에 관한 것으로, 본 발명의 일실시예에 따른 지중케이블 고장위치 탐지 장치는, 시간-주파수 영역 반사파 계측법에 따라 지중케이블의 전파 특성을 고려하여 상기 지중케이블의 고장위치를 탐지하기 위한 기준신호를 설계하기 위한 최적 기준신호 설계부; 상기 설계된 기준신호를 생성하여 상기 지중케이블에 인가함에 따라, 상기 지중케이블에 인가되는 기준신호, 상기 인가된 기준신호에 대한 반사신호를 취득하기 위한 신호 인가 및 취득부; 및 상기 취득된 기준신호와 반사신호에 대한 시간-주파수 영역 에너지 분포를 구한 후, 기준신호와 반사신호 간의 유사성을 판단함에 따라 상기 지중케이블의 고장위치가 존재하는지를 분석하기 위한 데이터 분석부;를 포함한다.
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公开(公告)号：WO2017158608A1
公开(公告)日：2017-09-21
申请号：PCT/IL2017/050337
申请日：2017-03-17
Applicant: ARIEL SCIENTIFIC INNOVATIONS LTD.
Inventor： PINHASI, Yosef , YAHALOM, Asher
CPC classification number: G01R31/088 , G01R31/025 , G01R31/085 , G01R31/11 , H04B3/46
Abstract: System and method for locating a fault on a line comprises a sampler that samples a pulse from the fault, the sampling being carried out at a predetermined sampling rate. A differentiator produces a differential or derivative of the pulse, and an analyzer obtains timing information from the derivative, from which it is possible to locate the fault knowing the total length of the line and the wave propagation rate.
Abstract translation: 用于定位线路上的故障的系统和方法包括采样器，该采样器对来自故障的脉冲进行采样，采样以预定的采样率进行。 微分器产生脉冲的微分或微分，并且分析器从微分器获得定时信息，从中可以知道线的总长度和波传播速率，从中可以定位故障。
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公开(公告)号：WO2017066704A1
公开(公告)日：2017-04-20
申请号：PCT/US2016/057218
申请日：2016-10-14
Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.
CPC classification number: H02H3/50 , G01R31/021 , G01R31/085 , G01R31/11 , G01R31/40 , H02H1/0007 , H02H7/22 , H02H7/263 , H02H7/265
Abstract: The present disclosure pertains to systems and methods for obtaining and processing high-frequency electric power system measurements for control and monitoring of an electric power system. High-frequency measurements may be used to detect traveling waves and/or to detect faults in the electric power system. In various embodiments, a processing device may receive high-frequency electric power system measurements from each of a local location and a remote location and may process the high-frequency electric power system measurements to identify and locate a fault. The occurrence of and location of a fault and may be used to implement protective actions to remediate identified faults.
Abstract translation: 本公开涉及用于获得和处理用于电力系统的控制和监测的高频电力系统测量的系统和方法。 高频测量可用于检测行波和/或检测电力系统中的故障。 在各种实施例中，处理设备可以从本地位置和远程位置中的每一个接收高频电力系统测量结果，并且可以处理高频电力系统测量结果以识别和定位故障。
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公开(公告)号：WO2017066205A1
公开(公告)日：2017-04-20
申请号：PCT/US2016/056466
申请日：2016-10-11
Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.
Inventor： SCHWEITZER, Edmund O., III , GUZMAN-CASILLAS, Armando , KASZTENNY, Bogdan Z. , MYNAM, Mangapathirao Venkata
IPC: H02J4/00
CPC classification number: H02H1/0007 , G01R31/085 , G01R31/086 , G01R31/11 , H02H3/38 , H02H7/265
Abstract: The present disclosure relates to a fault in an electric power delivery system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions associated with at least a portion of the electric power delivery system. A traveling wave detector may be configured to detect a traveling wave event based on the plurality of representations of electrical conditions. A traveling wave directional subsystem may be configured to calculate an energy value of the traveling wave event during an accumulation period based on the detection of the traveling wave by the traveling wave disturbance detector. A maximum and a minimum energy value may be determined during the accumulation period. A fault direction may be determined based on the maximum energy value and the minimum energy value. A fault detector subsystem configured to declare a fault based on the determined fault direction.
Abstract translation: 本公开涉及电力输送系统中的故障。 在一个实施例中，系统可以包括数据采集子系统，该数据采集子系统被配置为接收与电力输送系统的至少一部分相关联的电气条件的多个表示。 行波检测器可以被配置为基于电条件的多个表示来检测行波事件。 行波定向子系统可以被配置为基于行波干扰检测器对行波的检测来计算累积时段期间行波事件的能量值。 在累积期间可以确定最大和最小能量值。 可以基于最大能量值和最小能量值来确定故障方向。 故障检测器子系统被配置为基于所确定的故障方向来宣布故障。
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公开(公告)号：WO2016131721A1
公开(公告)日：2016-08-25
申请号：PCT/EP2016/053029
申请日：2016-02-12
Inventor： SALLEM, Soumaya , RAVOT, Nicolas
CPC classification number: G01R31/11 , G01R31/083
Abstract: Procédé de caractérisation d'un défaut impactant un câble dans lequel un signal de référence s de support temporel limité est injecté et une mesure r de la réflexion dudit signal de référence s dans le câble est réalisée, caractérisé en ce que ledit procédé comprend les étapes suivantes : - Identifier (201) une portion de la mesure r correspondant à un défaut, cette portion de mesure étant appelée signature du défaut, - Générer (202) un signal de référence s' modifié, d'amplitude paramétrable, égal à la somme dudit signal de référence s et dudit signal de référence s inversé et retardé d'un retard paramétrable, - Déterminer (203) conjointement les valeurs du retard paramétrable et de l'amplitude paramétrable qui minimisent l'erreur entre le signal de référence s' modifié et la signature du défaut, - En déduire (204) une estimation de la longueur du défaut à partir de la valeur dudit retard déterminée.
Abstract translation: 本发明涉及一种用于表征影响电缆的故障的方法，其中馈送时间有限的支持参考信号s，并且测量r由电缆中的所述参考信号s的反射构成。 所述方法的特征在于，所述方法包括以下步骤：识别（201）与故障相对应的测量r的一部分，该测量部分被称为故障签名; 产生（202）具有可参数振幅并且等于所述参考信号s和所述参考信号s的和的参考信号s'的修改的参考信号s'，所述参考信号s被反相并被延迟可参数延迟; 共同确定（203）使修改后的参考信号s'和故障签名之间的误差最小化的可参数延迟值和参数稳定幅值; 从其中得出（204）从所述预定延迟的值开始的故障长度的估计。
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Patent Agency Ranking
公开(公告)号：WO2016118584A1
公开(公告)日：2016-07-28
申请号：PCT/US2016/014061
申请日：2016-01-20
Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.
CPC classification number: G01R31/088 , G01R13/02 , G01R31/08 , G01R31/085 , G01R31/11 , H02H1/003 , H02H1/0092 , H02H7/265 , Y04S10/522
Abstract: The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave.
Abstract translation: 本公开涉及基于行波计算电力传输系统中的故障定位。 在一个实施例中，与本公开一致的系统可以被配置为检测电力传输系统中的故障。 该系统可以包括：行波检测子系统，用于检测和测量传输线上的行波和故障位置估计子系统。 故障位置估计子系统可以从行波检测子系统接收在参考事件期间生成的传输线上的第一多个行波。 故障位置估计子系统可以从行波检测子系统接收在计划外事件期间产生的第二多个行波。 可以检测第二多个波中的不匹配的行波，并且基于不匹配的行波来检测非计划外事件的位置。
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公开(公告)号：WO2015195019A1
公开(公告)日：2015-12-23
申请号：PCT/SE2014/050766
申请日：2014-06-19
Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
Inventor： FERTNER, Antoni , BÖRJESSON, Per Ola , ERICSON, Klas
Abstract: The present disclosure relates to wireline communication systems, and in particular to aspects of a method and a line estimation device for estimating a characteristic impedance of a section of a transmission medium. The method comprises determining, by a test equipment having a test port with known impedance Z ref , an S 11 scattering parameter vector S 11ref [f] of the transmission medium, indexed by frequency f. The method also comprises generating, based on Z ref and S 11ref [f], a model of reflection in the transmission medium corresponding to an observation of the transmission medium via a test port having a test impedance Z T , and also estimating the characteristic impedance of the section as a value of Z T which minimizes a difference between a reflection value of the model of reflection and a respective target reflection value of the section.
Abstract translation: 本公开涉及有线通信系统，特别涉及用于估计传输介质的一部分的特征阻抗的方法和线路估计装置的方面。 该方法包括通过具有已知阻抗Z ref的测试端口的测试设备确定由频率f索引的传输介质的S11散射参数矢量S11 ref [f]。 该方法还包括基于Zref和S11ref [f]生成对应于通过具有测试阻抗ZT的测试端口对传输介质的观察的传输介质中的反射模型，并且还估计该部分的特征阻抗 作为ZT的值，其使反射模型的反射值与该部分的各个目标反射值之间的差最小化。
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8.发明申请
公开(公告)号：WO2015039124A1
公开(公告)日：2015-03-19
申请号：PCT/US2014/055919
申请日：2014-09-16
Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC
Inventor： SCHWEITZER, Edmund O., III , MYNAM, Mangapathirao Venkata , GUZMAN-CASILLAS, Armando , SKENDZIC, Veselin , KASZTENNY, Bogdan Z. , WHITEHEAD, David E.
IPC: G06F19/00
CPC classification number: G01R31/088 , G01R31/11
Abstract: Fault location using traveling waves in an electric power delivery system according to the embodiments herein uses line parameters that are adjusted using traveling wave reflections from known discontinuities in the electric power delivery system. The arrival times of a traveling wave and a reflection of the traveling wave from a known discontinuity may be used to adjust parameters of the electric power delivery system such as, for example, line length. The adjusted parameter can then be used to more accurately calculate the location of the fault using the traveling waves.
Abstract translation: 根据本文实施例的在电力输送系统中使用行波的故障定位使用使用来自电力输送系统中的已知不连续性的行波反射来调整的线路参数。 可以使用行波的到达时间和来自已知不连续性的行波的反射来调整电力输送系统的参数，例如线路长度。 然后可以使用经调整的参数来更精确地计算使用行波的故障位置。
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公开(公告)号：WO2015039113A1
公开(公告)日：2015-03-19
申请号：PCT/US2014/055894
申请日：2014-09-16
Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC
Inventor： SCHWEITZER, Edmund O., III , MYNAM, Mangapathirao Venkata , GUZMAN-CASILLAS, Armando , LEE, Tony J. , SKENDZIC, Veselin , KASZTENNY, Bogdan Z. , WHITEHEAD, David E.
IPC: G01R31/08 , G01R31/11 , G01R31/315
CPC classification number: G01R31/088 , G01R19/2513 , G01R31/085 , G01R31/11 , H02H7/265
Abstract: A location of a fault in an electric power delivery system may be detected using traveling waves instigated by the fault. The time of arrival of the traveling wave may be calculated using the peak of the traveling wave. To determine the time of arrival of the peak of the traveling wave, estimates may be made of the time of arrival, and a parabola may be fit to filtered measurements before and after the estimated peak. The maximum of the parabola may be the time of arrival of the traveling wave. Dispersion of the traveling wave may also be corrected using an initial location of the fault and a known rate of dispersion of the electric power delivery system. Time stamps may be corrected using the calculated dispersion of the traveling wave.
Abstract translation: 可以使用由故障引起的行波来检测电力输送系统中的故障位置。 可以使用行波的峰值来计算行波的到达时间。 为了确定行波的峰值的到达时间，可以估计到达时间，并且抛物线可以适合估计峰值之前和之后的滤波测量值。 抛物线的最大值可以是旅行波的到达时间。 也可以使用故障的初始位置和电力输送系统的已知的分散速率来校正行波的分散。 可以使用所计算的行波的色散校正时间标记。
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公开(公告)号：WO2015000754A1
公开(公告)日：2015-01-08
申请号：PCT/EP2014/063351
申请日：2014-06-25
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： CHEN, Hong , FENG, Lei
CPC classification number: G01R31/11 , G01R31/026 , G01R31/07 , H05B37/034
Abstract: Apparatuses (10) report problems in cable systems comprising cables (101) and loads (111) connected to the cables (101) via fuses (121) and comprise first circuits (1) for detecting the fuses (121) going from conducting modes to non-conducting modes or having reached non-conducting modes, second circuits (2) for receiving first pulse signal from devices (20) connected to the cables (101) and in response to receptions of the first pulse signals transmitting second pulse signals to the devices (20) and third circuits (3) for activating the second circuits (2) in response to detection results from the first circuits (1). The devices (20) search for the problems and comprise transmitters (21) for transmitting the first pulse signals to the apparatuses (10) and receivers (22) for receiving the second pulse signals from the apparatuses (10). The second pulse signals are indicative for the problems, and time-intervals between transmissions of the first pulse signals and receptions of the second pulse signals are indicative for locations of the problems.
Abstract translation: 装置（10）报告了电缆系统中的问题，包括电缆（101）和通过熔断器（121）连接到电缆（101）的负载（111）），并且包括用于检测从传导模式到熔断器 非导通模式或已经达到非导通模式的第二电路（2），用于从连接到电缆（101）的设备（20）接收第一脉冲信号，以及响应于将第二脉冲信号发送到第 用于响应于来自第一电路（1）的检测结果来激活第二电路（2）的装置（20）和第三电路（3）。 设备（20）搜索问题，并且包括用于将第一脉冲信号发射到设备（10）和接收器（22）的发射机（21），用于从设备（10）接收第二脉冲信号。 第二脉冲信号指示问题，并且第一脉冲信号的发送和第二脉冲信号的接收之间的时间间隔指示问题的位置。
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