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公开(公告)号：US09366715B2
公开(公告)日：2016-06-14
申请号：US13861840
申请日：2013-04-12
Applicant: ABB RESEARCH LTD
Inventor： Abhisek Ukil , Bernhard Deck , Vishal H. Shah
CPC classification number: G01R31/08 , G01R19/0092 , G01R31/025 , G01R31/085 , H02H3/081 , H02H3/265
Abstract: A method of determining a fault direction parameter of a fault on an AC transmission line of a power distribution system relative to a measurement location of the transmission line. The method includes measuring a time-dependent AC current of the transmission line at the measurement location to obtain time-domain current data indicative of the measured current, obtaining a time of the fault on the transmission line, identifying first and second times by identifying a periodically re-occurring feature of the current data, such that the fault time is between the first and second times, extracting, from the current data, an offset indicative parameter indicative of a time offset of the current at the fault time and between the first and second times, calculating an offset direction parameter by comparing the offset indicative parameter to a non-offset indicative parameter, and establishing the fault direction parameter based on the offset direction parameter.
Abstract translation: 一种确定配电系统的交流输电线路相对于传输线的测量位置的故障方向参数的方法。 该方法包括测量测量位置处的传输线的时间相关AC电流，以获得指示测量电流的时域电流数据，获得传输线上的故障时间，通过识别第一次和第二次识别 周期性地重新发现当前数据的特征，使得故障时间在第一和第二时间之间，从当前数据中提取指示故障时间处的电流的时间偏移和第一 并且第二次，通过将偏移指示参数与非偏移指示参数进行比较来计算偏移方向参数，以及基于偏移方向参数建立故障方向参数。
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公开(公告)号：US09887530B2
公开(公告)日：2018-02-06
申请号：US14730785
申请日：2015-06-04
Applicant: ABB RESEARCH LTD
Inventor： Hariram Satheesh , Bernhard Deck , GN Krishnamoorthy , Mallikarjun Kande , Sanjeev Koul , Naman Raval , Nayan Shah , Vishal H. Shah
Abstract: A protection relay is disclosed that generates a trip signal to operate a circuit breaker in case of a fault condition. A first module provides measurement and analysis of power parameters of the power line connecting the power equipment that is being protected, the protection being provided by generating a first trip signal for operating a circuit breaker connected in the power line. One or more second modules can boost performance of the protection relay by measurement and analysis of power parameters-to generate a second trip signal for operating a circuit breaker connected in the power line. The first trip signal and the second trip signal are logically combined to generate a trip signal that operates the circuit breaker.
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公开(公告)号：US09250282B2
公开(公告)日：2016-02-02
申请号：US13751474
申请日：2013-01-28
Applicant: ABB RESEARCH LTD
Inventor： Abhisek Ukil , Bernhard Deck , Vishal H. Shah
Abstract: A method of determining a fault parameter of a fault on an AC transmission line 10 of a power distribution system 1 relative to a measurement location 12 of the transmission line 10 comprising: measuring a time-dependent current of the transmission line 10 at the measurement location 12; transmitting a current signal indicative of the measured current to a decision logic section 36, the current signal comprising a plurality of pre-fault current values and a plurality of post-fault current values; determining, by the decision logic section 36, a plurality of phase difference values indicative of respective phase differences between respective pre-fault current values and respective post-fault current values; accumulating the plurality of phase difference values into an accumulated phase difference parameter; obtaining the fault parameter by comparing the accumulated phase difference parameter to a threshold value; and outputting the determined fault parameter.
Abstract translation: 一种确定配电系统1的交流传输线路10相对于传输线10的测量位置12的故障参数的方法，包括：测量测量位置处的传输线路10的时间相关电流 12; 将指示所测量的电流的电流信号发送到判定逻辑部分36，该电流信号包括多个故障前电流值和多个故障后电流值; 由判定逻辑部分36确定指示相应的故障前电流值和相应的故障后电流值之间的相位差的多个相位差值; 将所述多个相位差值累积为累积相位差参数; 通过将累积的相位差参数与阈值进行比较来获得故障参数; 并输出所确定的故障参数。
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公开(公告)号：US20130221977A1
公开(公告)日：2013-08-29
申请号：US13861840
申请日：2013-04-12
Applicant: ABB RESEARCH LTD
Inventor： Abhisek UKIL , Bernhard Deck , Vishal H. Shah
IPC: G01R31/08
CPC classification number: G01R31/08 , G01R19/0092 , G01R31/025 , G01R31/085 , H02H3/081 , H02H3/265
Abstract: A method of determining a fault direction parameter of a fault on an AC transmission line of a power distribution system relative to a measurement location of the transmission line. The method includes measuring a time-dependent AC current of the transmission line at the measurement location to obtain time-domain current data indicative of the measured current, obtaining a time of the fault on the transmission line, identifying first and second times by identifying a periodically re-occurring feature of the current data, such that the fault time is between the first and second times, extracting, from the current data, an offset indicative parameter indicative of a time offset of the current at the fault time and between the first and second times, calculating an offset direction parameter by comparing the offset indicative parameter to a non-offset indicative parameter, and establishing the fault direction parameter based on the offset direction parameter.
Abstract translation: 一种确定配电系统的交流输电线路相对于传输线的测量位置的故障方向参数的方法。 该方法包括测量测量位置处的传输线的时间相关AC电流，以获得指示测量电流的时域电流数据，获得传输线上的故障时间，通过识别第一次和第二次识别 周期性地重新发现当前数据的特征，使得故障时间在第一和第二时间之间，从当前数据中提取指示故障时间处的电流的时间偏移和第一 并且第二次，通过将偏移指示参数与非偏移指示参数进行比较来计算偏移方向参数，以及基于偏移方向参数建立故障方向参数。
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