-
公开(公告)号：US20150081236A1
公开(公告)日：2015-03-19
申请号：US14486925
申请日：2014-09-15
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Veselin Skendzic , Bogdan Z. Kasztenny , David E. Whitehead
CPC classification number: G01R31/088 , G01R27/16 , G01R31/085
Abstract: Electric power delivery system fault location systems and methods as disclosed herein include validation of the received traveling wave fault measurements. Validation may include estimating a location of the fault using an impedance-based fault location calculation. Time windows of expected arrival times of traveling waves based on the estimated fault location and known parameters of the line may then be established. Arrival times of traveling waves may then be compared against the time windows. If the traveling waves arrive within a time window, then the traveling waves may be used to calculate the location of the fault.
Abstract translation: 如本文所公开的电力输送系统故障定位系统和方法包括接收的行波故障测量的验证。 验证可以包括使用基于阻抗的故障位置计算来估计故障的位置。 然后可以建立基于估计的故障位置和行的已知参数的行波的预期到达时间的时间窗口。 然后可以将行波的到达时间与时间窗口进行比较。 如果行波在时间窗内到达，则可以使用行波来计算故障的位置。
-
公开(公告)号：US11307264B2
公开(公告)日：2022-04-19
申请号：US15621783
申请日：2017-06-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: Phase selection for traveling wave fault detection systems is disclosed herein. Intelligent electronic devices (IEDs) may be used to monitor and protect electric power delivery systems by detecting and acting upon traveling waves. A phase of the electric power delivery system may be selected based on the relative polarity of the traveling waves detected. The amplitude and/or polarity of the selected phase may be compared with the amplitudes and/or polarities of the other phases to determine a fault condition. For instance, the IED may determine a single-phase-to-ground fault based on the relative polarities and magnitudes of the detected traveling waves, send a protective action to the identified faulted phase, and/or continue to monitor the system for a continuation of the event or identification of a different event, such as a three-phase fault, using incremental quantities.
-
23.发明授权公开(公告)号：US10677834B2
公开(公告)日：2020-06-09
申请号：US16132117
申请日：2018-09-14
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: Distance protection of electric power delivery systems are disclosed herein where a fault within a zone of protection is detected using time-domain fault detection supervised by frequency-domain fault detection. The distance fault detection may be asserted when the real or imaginary parts of the time-domain operating and polarizing quantities are both positive or both negative and an angle between the frequency domain operating and polarizing quantities is within a predetermined range. Additional security may be provided using a level check, a sign consistency check, or a disturbance detector.
-
24.发明申请公开(公告)号：US20200088780A1
公开(公告)日：2020-03-19
申请号：US16132117
申请日：2018-09-14
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: Distance protection of electric power delivery systems are disclosed herein where a fault within a zone of protection is detected using time-domain fault detection supervised by frequency-domain fault detection. The distance fault detection may be asserted when the real or imaginary parts of the time-domain operating and polarizing quantities are both positive or both negative and an angle between the frequency domain operating and polarizing quantities is within a predetermined range. Additional security may be provided using a level check, a sign consistency check, or a disturbance detector.
-
公开(公告)号：US10522995B2
公开(公告)日：2019-12-31
申请号：US15622006
申请日：2017-06-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Bogdan Z. Kasztenny , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Normann Fischer
Abstract: The present disclosure pertains to systems and methods for supervising protective elements in electric power systems. In one embodiment, a system may be configured to selectively enable a protective action an electric power system. The system may include a data acquisition subsystem receive a plurality of representations of electrical conditions associated with at least a portion of the electric power delivery system. An incremental quantities module may calculate incremental quantities from the plurality of representations. The system may be configured to detect an event, to determine an incremental quantities value during the event, and to determine a time-varying threshold. The incremental quantities value during the event may be compared with the time-varying threshold, and a protective action module may be enabled to implement a protective action when the value of the incremental quantities value during the event exceeds the time-varying threshold.
-
Patent Agency Ranking
26.发明申请公开(公告)号：US20190212382A1
公开(公告)日：2019-07-11
申请号：US16358407
申请日：2019-03-19
Applicant: Schweitzer Engineering Laboratories, Inc.
Abstract: A single-ended traveling wave fault location estimation is calculated using this disclosure, and a confidence level is determined based on available independent fault location estimations. Hypothesis are calculated based on traveling wave times and values, wherein the values indicate a polarity that is the same as the first received traveling wave. Hypothesis are then compared against results of other fault location estimations, and confidence levels assigned accordingly. The fault location is then calculated and displayed based on the hypothesis and confidence levels.
-
公开(公告)号：US10295585B2
公开(公告)日：2019-05-21
申请号：US15806959
申请日：2017-11-08
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Yajian Tong , Mangapathirao Venkata Mynam
Abstract: Traveling wave information from a single end of an electric power delivery system is used to determine a fault location on a power line of the electric power delivery system. Hypotheses of which of a plurality of received traveling waves represents a first reflection from the fault are evaluated. A determination of an arrival time of the first reflection from the fault is used to calculate a distance from the single end of the power line to the fault location.
-
公开(公告)号：US20170358913A1
公开(公告)日：2017-12-14
申请号：US15622006
申请日：2017-06-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Bogdan Z. Kasztenny , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Normann Fischer
CPC classification number: H02H3/02 , H02H1/0007 , H02H1/0084 , H02H3/30 , H02H7/26 , H02H7/263 , H02H7/265
Abstract: The present disclosure pertains to systems and methods for supervising protective elements in electric power systems. In one embodiment, a system may be configured to selectively enable a protective action an electric power system. The system may include a data acquisition subsystem receive a plurality of representations of electrical conditions associated with at least a portion of the electric power delivery system. An incremental quantities module may calculate incremental quantities from the plurality of representations. A protective module may be configured to detect an event, to determine an incremental quantities value during the event, and to determine a time-varying threshold. The incremental quantities value during the event may be compared with the time-varying threshold, and a protective action module may be enabled to implement a protective action when the value of the incremental quantities value during the event exceeds the time-varying threshold.
-
公开(公告)号：US20170104324A1
公开(公告)日：2017-04-13
申请号：US15291295
申请日：2016-10-12
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Armando Guzman-Casillas , Bodgan Z. Kasztenny , Mangapathirao Venkata Mynam
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.
-
30.发明申请FAULT DETECTION IN ELECTRIC POWER DELIVERY SYSTEMS USING UNDERREACH, DIRECTIONAL, AND TRAVELING WAVE ELEMENTS 审中-公开电力输送系统故障检测使用内部，方向和行驶波浪元件公开(公告)号：US20170012424A1
公开(公告)日：2017-01-12
申请号：US15272116
申请日：2016-09-21
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , Armando Guzman-Casillas , Bogdan Z. Kasztenny , Veselin Skendzic , Tony J. Lee , David E. Whitehead
CPC classification number: H02H7/20 , G01R31/08 , G01R31/085 , G01R31/088 , G01R31/2836 , G01R31/40 , G05B9/02 , H02H3/042 , H02H7/265
Abstract: The present disclosure pertains to systems and methods for detecting faults 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. The system may also include a traveling wave differential subsystem configured to determine an operating quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may also determine a restraint quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may detect a traveling wave generated by the fault based on the plurality of representations. A fault detector subsystem may be configured to declare a fault based on a comparison of the operating quantity and the restraint quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
Abstract translation: 本公开涉及用于检测电力输送系统中的故障的系统和方法。 在一个实施例中，系统可以包括被配置为接收电气条件的多个表示的数据采集子系统。 该系统还可以包括配置成基于电气条件的多个表示来确定操作量的行波差分子系统。 行波差分子系统还可以基于电气条件的多个表示来确定约束量。 行波差分子系统可以基于多个表示来检测由故障产生的行波。 故障检测器子系统可以被配置为基于操作量与约束量的比较来声明故障。 保护作用子系统可以基于故障的声明来实施保护动作。
-
-
-
-
-
-
-
-
-
Search Results
56
records
(took 0.031 seconds)
