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1. 发明授权

US06476613B2 Method of fault location in parallel transmission lines with series compensation 有权
标题翻译：并联传输线故障定位方法与串联补偿
公开(公告)号：US06476613B2
公开(公告)日：2002-11-05
申请号：US09902863
申请日：2001-07-10
申请人： Murari Mohan Saha , Jan Izykowski , Eugeniusz Rosolowski
发明人： Murari Mohan Saha , Jan Izykowski , Eugeniusz Rosolowski
IPC分类号： G01R3102
CPC分类号： G01R31/083
摘要： The present invention relates to a method for locating a fault (F) in a section of parallel transmission lines in a network comprising the steps: measuring the currents and voltages of both lines at a measuring point arranged at one end (A) of the section, determining the fault distance (x) between the measuring point and the fault as a solution of an equation Ax2−Bx+C−Rf=0 comprising the fault distance (x) as a variable and the fault resistance (Rf), the invention is characterised in that the parameters (A, B, C, D) comprise the phase components of the locally measured currents and voltages and are obtained from calculating from the measuring point to the fault location along the both parallel lines, and wherein the equation is resolved into its real and imaginary parts: Real(A)x2−Real(B)x+Real(C)−Rf=0 Imag(A)x2−Imag(B)x+Imag(C)=0, whereby the fault distance is derived from the imaginary part.
摘要翻译：本发明涉及一种用于定位网络中并行传输线路部分中的故障（F）的方法，包括以下步骤：在布置在所述部分的一端（A）处的测量点处测量两条线路的电流和电压确定测量点与故障之间的故障距离（x），作为包含故障距离（x）的方程式Ax2-Bx + C-Rf = 0作为变量和故障电阻（Rf），本发明其特征在于，参数（A，B，C，D）包括局部测量的电流和电压的相位分量，并且从沿着两条平行线的测量点到故障位置的计算获得，并且其中方程式解决了它的实部和虚部：从而从虚部导出故障距离。

2. 发明授权

US07286963B2 Method and device for fault location on three terminal power line 有权
标题翻译：三端电源线故障定位方法及装置
公开(公告)号：US07286963B2
公开(公告)日：2007-10-23
申请号：US11320835
申请日：2005-12-30
申请人： Murari Mohan Saha , Eugeniusz Rosolowski , Jan Izykowski , Rafal Molag
发明人： Murari Mohan Saha , Eugeniusz Rosolowski , Jan Izykowski , Rafal Molag
IPC分类号： G01R31/00
CPC分类号： G01R31/086
摘要： A method for locating a fault in three terminal power line, having sections located in front of or behind of the tap point and which assumes occurrence of the fault in at least one of those sections. Three phase currents and voltages are measured at one end of the power lines system. The amplitudes of load currents in the remaining sections of the power lines system are measured before a fault occurs. The measurements of the amplitudes of load currents are stored in the remaining sections of the power lines system. Impedance data of the network are determined. The symmetrical components approach is used when calculating the location of the fault.
摘要翻译：一种用于定位三端电力线中的故障的方法，其具有位于分接点前面或后面的部分，并且在这些部分中的至少一个部分中发生故障。在电力系统的一端测量三相电流和电压。在故障发生之前测量电力系统的剩余部分中负载电流的幅度。负载电流幅度的测量值存储在电力系统的其余部分。确定网络的阻抗数据。在计算故障位置时使用对称分量方法。

3. 发明授权

US07298149B2 Fault location using measurements of current and voltage from one end of a line 有权
标题翻译：故障位置使用从一端的电流和电压测量
公开(公告)号：US07298149B2
公开(公告)日：2007-11-20
申请号：US10518430
申请日：2003-06-18
申请人： Murari Mohan Saha , Jan Izykowski , Eugeniusz Rosolowski
发明人： Murari Mohan Saha , Jan Izykowski , Eugeniusz Rosolowski
IPC分类号： G01R31/08
CPC分类号： G01R31/085 , G01R31/088 , H02H3/385 , H02H7/26
摘要： A method to locate a fault from one end of a section of a power line utilizing measurements of current, voltage and angles between the phases at a first end of said section. Symmetrical components of currents are calculated for the current and voltage measurement at the first end. A value of impedance is calculated for an extra link between the terminals with the impedance for the positive sequence. A compensation is determined for the shunt capacitance. The zero-sequence current is determined from the healthy line of a section of parallel power lines. A distance to a fault is calculated for the parallel line section. The distance to the fault from the first end is calculated. The fault is located utilizing the calculate distances.
摘要翻译：一种利用在所述部分的第一端处的相位之间的电流，电压和角度的测量来定位电力线路的一端的故障的方法。在第一端计算电流和电压测量的电流的对称分量。对于具有正序列阻抗的端子之间的额外链路来计算阻抗值。确定并联电容的补偿。零序电流由一段平行电力线的健康线确定。对于平行线段计算到故障的距离。计算从第一端到故障的距离。故障位置利用计算距离。

4. 发明授权

US07221166B2 Fault location using measurements from two ends of a line 有权
标题翻译：故障位置使用从两端的测量
公开(公告)号：US07221166B2
公开(公告)日：2007-05-22
申请号：US10546595
申请日：2002-11-22
申请人： Murari Mohan Saha , Eugeniusz Rosolowski , Jan Izykowski
发明人： Murari Mohan Saha , Eugeniusz Rosolowski , Jan Izykowski
IPC分类号： G01R31/08
CPC分类号： G01R31/088 , H02H3/40
摘要： The present invention relates to a method to locate a fault in a section of a transmission line using measurements of current, voltage and angles between the phases at a first (A) and a second (B) end of said section. The invention is characterised by the steps of, after the occurrence of a fault along the section, calculating a distance (dA, dB) to a fault dependent on a fault current measured at one of said first and second ends and phase voltages measured at both of said first and second ends (A, B), where the distance to fault is calculated from the end (A or B) where the fault current is measured. The invention is particularly suitable when a current transformer at either of the first or second ends (A, B) is saturated. If so, then, a distance (d) to a fault is calculated dependent on a fault current measured at the non-affected end and phase voltages measured at both the affected end and the non-affected end.
摘要翻译：本发明涉及使用所述部分的第一（A）和第二（B）端之间的相位之间的电流，电压和角度的测量来定位传输线的部分中的故障的方法。本发明的特征在于以下步骤：在沿着该部分发生故障之后，计算与故障相关的故障的距离（d A，A，B B）在所述第一和第二端中的一个测量的电流以及在所述第一和第二端（A，B）两端测量的相位电压，其中从测量故障电流的端部（A或B）计算出与故障的距离。当第一或第二端（A，B）中的任一个的电流互感器饱和时，本发明特别合适。如果是这样，则根据在非受影响端测量的故障电流和在受影响端和非受影响端测量的相电压来计算与故障的距离（d）。

5. 发明申请

US20090150099A1 Method for fault location in electric power lines 有权
标题翻译：电力线故障定位方法
公开(公告)号：US20090150099A1
公开(公告)日：2009-06-11
申请号：US11991130
申请日：2006-09-05
申请人： Przemyslaw Balcerek , Marek Fulczyk , Eugeniusz Rosolowski , Jan Izykowski , Murari Saha
发明人： Przemyslaw Balcerek , Marek Fulczyk , Eugeniusz Rosolowski , Jan Izykowski , Murari Saha
IPC分类号： G01R31/08
CPC分类号： G01R31/086 , G01R31/088
摘要： A method for locating faults in three-terminal and multi-terminal power lines, applicable in electric power systems for overhead and underground cable transmission and distribution lines. The inventive method is characterised in that it measures current for fault and pre-fault conditions and in one terminal station of the system line phase voltage for fault and pre-fault conditions is measured, a hypothetical fault location is assumed, the distances to the hypothetical fault locations are calculated and fault resistance is calculated, the actual fault point is selected by first comparing the numerical values concerning the distances to the hypothetical fault locations and rejecting those results whose numerical values are negative or bigger than one in relative units, and then by analysing the values of the calculated fault resistances for the fault locations and rejecting those results of the calculations for which the value of fault resistance is negative, and if there is still more than one calculation result remains not rejected then performing selection of the valid result by analysing the values of the calculated respective equivalent source impedances.
摘要翻译：一种用于定位三端子和多端子电力线路故障的方法，适用于架空和地下电缆输配电线路的电力系统。本发明的方法的特征在于其测量故障和故障前状况的电流，并且在一个终端中测量用于故障和故障前状况的系统线路相电压，假设假定故障位置，到假设的距离计算故障位置并计算故障电阻，通过首先比较与假想故障位置的距离相关的数值，并排除数值为负或大于相对单位的结果，然后再按分析故障位置计算出的故障电阻的值，并排除故障电阻值为负的计算结果，如果还有一个以上的计算结果仍然不被拒绝，则执行有效结果的选择分析计算出的各个等效源阻抗的值。

6. 发明申请

US20090021878A1 METHOD AND ADAPTIVE DISTANCE PROTECTION RELAY FOR POWER TRANSMISSION LINES 有权
标题翻译：电力传输线的方法和自适应距离保护继电器
公开(公告)号：US20090021878A1
公开(公告)日：2009-01-22
申请号：US12279030
申请日：2006-12-21
申请人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
发明人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
IPC分类号： H02H3/00
CPC分类号： H02H3/40 , G01R31/025 , G01R31/088 , H02H7/28
摘要： A method and an adaptive distance protection relay for compensating for a remote line end infeed effect during determination of a distance to a resistive fault on a three-phase power transmission line. It is assumed that a fault current flows through the fault resistance. A fault loop impedance is first calculated by a known algorithm from phase voltages and phase currents. A shift of the fault loop impedance is determined from the fault loop impedance, the impedance of the transmission line for the positive current sequence and the phase angle of a complex fault current distribution factor, where the fault current distribution factor is the ratio of the fault loop current to the fault current. The distance to fault is calculated by subtracting the impedance shift from the fault loop impedance and dividing the result by the impedance of the transmission line for the positive current sequence.
摘要翻译：一种方法和自适应距离保护继电器，用于在确定到三相输电线路上的电阻故障的距离期间补偿远端线路进给效应。假设故障电流流过故障电阻。首先通过已知的相电压和相电流来计算故障回路阻抗。故障回路阻抗的变化由故障回路阻抗，正电流序列的传输线的阻抗和复杂故障电流分布因子的相位角确定，其中故障电流分布因子是故障比回路电流到故障电流。通过从故障回路阻抗中减去阻抗偏移并将结果除以正电流序列的传输线的阻抗来计算故障距离。

7. 发明授权

US08183871B2 Method and device for fault location in a two-terminal transmission or distribution power line 有权
标题翻译：双端子传输或配电电源线故障定位方法和装置
公开(公告)号：US08183871B2
公开(公告)日：2012-05-22
申请号：US12160552
申请日：2006-09-11
申请人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
发明人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
IPC分类号： G01R31/08 , G01R31/00
CPC分类号： G01R31/088 , G01R31/085
摘要： A method for locating a fault in a two-terminal power transmission or distribution line. Measurements of the three phase currents are received from both terminals. Measurements of the three phase voltages are received from one line terminal. Parameters of the line are received. The fault type is received. Based on this received information the distance to fault from the one terminal where the phase voltages were measured is determined and output. Since only the phase voltages of one line terminal are needed, the functionality of a device, in particular a current differential relay, can be expanded to determine the distance to fault in an off-line mode.
摘要翻译：一种用于定位两端电力输配电线路故障的方法。从两个端子接收三相电流的测量。从一个线路终端接收三相电压的测量。接收线路的参数。接收故障类型。基于该接收到的信息，确定并输出从测量相电压的一个端子到故障的距离。由于仅需要一个线路终端的相电压，因此可以扩展设备的功能，特别是电流差动继电器，以确定离线模式下与故障的距离。

8. 发明申请

US20060097728A1 Fault location using measurements of current and voltage from one end of a line 有权
公开(公告)号：US20060097728A1
公开(公告)日：2006-05-11
申请号：US10518430
申请日：2003-06-18
申请人： Murari Saha , Jan Izykowski , Eugeniusz Rosolowski
发明人： Murari Saha , Jan Izykowski , Eugeniusz Rosolowski
IPC分类号： G01R31/08
CPC分类号： G01R31/085 , G01R31/088 , H02H3/385 , H02H7/26
摘要： A method to locate a fault from one end of a section of a power line utilizing measurements of current, voltage and angles between the phases at a first end of said section. Symmetrical components of currents are calculated for the current and voltage measurement at the first end. A value of impedance is calculated for an extra link between the terminals with the impedance for the positive sequence equal to: ( Z _ 1 ⁢ ⁢ LB & ⁢ AB = Z _ 1 ⁢ LB ⁢ Z _ 1 ⁢ AB Z _ 1 ⁢ LB + Z _ 1 ⁢ AB ) ⁢ ⁢ where ⁢ : Z1AB=impedance for the positive sequence of the extra link, Z1LA=positive-sequence impedance of the healthy line. A compensation is determined for the shunt capacitance with the aid of an equation of the form: B2comp—1(dcomp—1)2+B1comp—1dcomp—1+B0comp—1=0 where: B2comp—1=A2—Recomp—1A00—Imcomp—1−A2—Imcomp—1A00—Recomp—1 B1comp—1=A1—Recomp—1A00—Imcomp—1−A1—Imcomp—1A00—Recomp—1 B0comp—1=A0—Recomp—1A00—Imcomp—1−A0—Imcomp—1A00—Recomp—1. The zero-sequence current is determined from the healthy line of a section of parallel power lines. A distance to a fault is calculated for the parallel line section. The distance to the fault from the first end is calculated using a quadratic equation of the form: B2d2+B1d+B0=0 where: B2=A2—ReA00—Im−A2—ImA00—Re B1=A1—ReA00—Im−A1—ImA00—Re B0=A0—ReA00—Im−A0—ImA00—Re.

9. 发明授权

US06924647B2 Fault location method and device 有权
标题翻译：故障定位方法和设备
公开(公告)号：US06924647B2
公开(公告)日：2005-08-02
申请号：US10450655
申请日：2001-12-14
申请人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
发明人： Murari Saha , Eugeniusz Rosolowski , Jan Izykowski
IPC分类号： G01R31/08 , G06F19/00
CPC分类号： G01R31/086 , G01R31/088 , Y04S10/522
摘要： The present invention relates to a method for calculating the distance to fault in a section of a power transmission network, which section is arranged with line terminals at both ends, each terminal including impedance relays (AA, BB), including the steps of, at the occurence of a fault; measuring the apparent impedances by each relay, measuring the relaying currents, determining the type of fault, checking whether the fault involves a fault resistance or not, and, if so, solving a quadratic equation for complex numbers, resolving the quadratic equation for the real and imaginary components, obtaining two quadratic equations for a fault distance in which the coefficients are real numbers, combining the two equations and obtaining a distance to fault, or, if not so, solving a quadratic equation for real numbers, obtaining two solutions for the distance to fault d1, d2 and comparing the solutions as 0
摘要翻译：本发明涉及一种用于计算输电网络部分中的故障距离的方法，该部分布置成两端具有线路终端，每个终端包括阻抗继电器（AA，BB），包括以下步骤：发生故障; 测量每个继电器的视在阻抗，测量继电电流，确定故障类型，检查故障是否涉及故障电阻，如果是，求解复数的二次方程，求解真实的二次方程和虚部，为系数为实数的故障距离获得两个二次方程，组合两个方程并获得与故障的距离，或者如果不是，则求解实数的二次方程，为与故障距离d <1>，2 ，并将溶液比较为0 <（D 1> 1或2 2） <1 pu，其中pu是线路终端之间的传输线的长度。

10. 发明授权

US09461458B2 Method of distance protection of parallel transmission line 有权
标题翻译：并行传输线距离保护方法
公开(公告)号：US09461458B2
公开(公告)日：2016-10-04
申请号：US14238543
申请日：2012-08-06
申请人： Przemyslaw Balcerek , Murari Saha , Eugeniusz Rosolowski , Jan Izykowski , Piotr Pierz
发明人： Przemyslaw Balcerek , Murari Saha , Eugeniusz Rosolowski , Jan Izykowski , Piotr Pierz
IPC分类号： H02H3/42 , H02H3/36 , H02H7/26 , H02H3/16
CPC分类号： H02H3/16 , H02H3/42 , H02H7/267
摘要： The present invention is concerned with a method of distance protection of parallel transmission lines applicable both to series compensated and uncompensated electric power lines, using a distance relay. The method is characterized in that a pair of flags (ff1, ff2) are calculated for indication faulted and healthy circuits in parallel lines and in the same time a flag (Internal_Fault) for indication internal or external fault in parallel lines is calculated independently. Next gathering all calculated flags (ff1, ff2, Internal_Fault) an analyze of the value of these flags are performed and depending on the values of flags (ff1, ff2, Internal_Fault) and on their reciprocal relationship, a trip permission signal from the protection relay (4) is released and sent to the alarms devices or to the line breakers, or a block signal from the protection relay (4) is generated and sent to protect parallel lines before damage.
摘要翻译：本发明涉及一种使用距离继电器对并联传输线路进行距离保护的方法，其可应用于串联补偿和无补偿电力线路。该方法的特征在于，对并联线路中的指示故障和健康电路计算一对标志（ff1，ff2），并且同时计算用于指示并行线路中的内部或外部故障的标志（Internal_Fault）。接下来收集所有计算的标志（ff1，ff2，Internal_Fault），执行这些标志值的分析，并根据标志（ff1，ff2，Internal_Fault）的值和它们的倒数关系，保护继电器的跳闸许可信号（4）被释放并发送到报警装置或线路断路器，或者产生并发送来自保护继电器（4）的阻塞信号，并在发生损坏之前保护平行线路。

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