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1. 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。

2. 发明授权

US09182441B2 Method and device for fault location of series-compensated transmission line 有权
标题翻译：串联补偿传输线故障定位方法及装置
公开(公告)号：US09182441B2
公开(公告)日：2015-11-10
申请号：US13008782
申请日：2011-01-18
申请人： Murari Saha
发明人： Murari Saha
IPC分类号： G01R31/08 , G01R31/02
CPC分类号： G01R31/085 , G01R31/025 , G01R31/08 , G01R31/088
摘要： A transmission line system, a device for fault protection and computer programs, and a method for locating a fault in a series-compensated two-terminal power transmission line including a compensating bank for providing series-compensation to the transmission line. Different subroutines are utilized for locating faults on line segments from the first terminal to the compensating bank and line segments from the second terminal to the compensating bank. A selection is then made in order to determine a valid result. The subroutines utilize three phase currents synchronized measurements from both terminals and a three phase voltage measurements from one terminal for determining the respective per unit distance to a fault.
摘要翻译：一种传输线路系统，用于故障保护的设备和计算机程序，以及一种用于定位串联补偿的两端电力传输线路中的故障的方法，包括用于向传输线提供串联补偿的补偿组。利用不同的子程序来定位从第一终端到补偿组的线段上的故障，以及从第二终端到补偿组的线段。然后进行选择以确定有效结果。子程序利用来自两个端子的三相电流同步测量和来自一个端子的三相电压测量，以确定相应于每单位到故障的距离。

3. 发明授权

US08131485B2 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：US08131485B2
公开(公告)日：2012-03-06
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： G01R31/00
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 characterized 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。

4. 发明申请

US20110178741A1 METHOD AND DEVICE FOR FAULT LOCATION OF SERIES-COMPENSATED TRANSMISSION LINE 有权
标题翻译：用于系列补偿传输线故障定位的方法和装置
公开(公告)号：US20110178741A1
公开(公告)日：2011-07-21
申请号：US13008782
申请日：2011-01-18
申请人： Murari Saha
发明人： Murari Saha
IPC分类号： G01R31/08 , G06F19/00
CPC分类号： G01R31/085 , G01R31/025 , G01R31/08 , G01R31/088
摘要： A transmission line system, a device for fault protection and computer programs, and a method for locating a fault in a series-compensated two-terminal power transmission line including a compensating bank for providing series-compensation to the transmission line. Different subroutines are utilized for locating faults on line segments from the first terminal to the compensating bank and line segments from the second terminal to the compensating bank. A selection is then made in order to determine a valid result. The subroutines utilize three phase currents synchronized measurements from both terminals and a three phase voltage measurements from one terminal for determining the respective per unit distance to a fault.
摘要翻译：一种传输线路系统，用于故障保护的设备和计算机程序，以及一种用于定位串联补偿的两端电力传输线路中的故障的方法，包括用于向传输线提供串联补偿的补偿组。利用不同的子程序来定位从第一终端到补偿组的线段上的故障，以及从第二终端到补偿组的线段。然后进行选择以确定有效结果。子程序利用来自两个端子的三相电流同步测量和来自一个端子的三相电压测量，以确定相应于每单位到故障的距离。

5. 发明申请

US20110037480A1 METHOD FOR FAULT LOCATION IN UNCOMPENSATED POWER LINES WITH TWO-END UNSYNCHRONIZED MEASUREMENT 有权
标题翻译：不稳定电源线故障定位的方法，具有两端不间断测量
公开(公告)号：US20110037480A1
公开(公告)日：2011-02-17
申请号：US12669502
申请日：2008-06-23
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 , G06F19/00
CPC分类号： G01R31/088
摘要： A method is provided for fault location in uncompensated power lines with two-end unsynchronized measurement, finding an application in the power industry and for overhead and overhead-cable transmission or distribution lines. The method according to the invention includes measuring the voltage and currents at both ends (A) and (B) of the section, obtaining the phasor of the positive sequence voltages (VA1, VB1) measured at the ends (A) and (B), respectively, obtaining the phasor of the positive sequence currents (IA1, IB1) measured at the ends (A) and (B), respectively, determining whether there is a three-phase balanced fault, and using either a first subroutine or a second subroutine (depending on whether or not there is a fault), determining a distance (d) to the fault.
摘要翻译：提供了一种用于具有两端不同步测量的未补偿电力线路中的故障定位的方法，在电力工业中寻找应用，以及在架空电缆和架空电缆传输或分配线路上进行应用。根据本发明的方法包括测量部分两端（A）和（B）的电压和电流，获得在端部（A）和（B）测量的正序电压（VA1，VB1）的相量，分别获得在端部（A）和（B）测量的正序列电流（IA1，IB1）的相量，确定是否存在三相平衡故障，并且使用第一子程序或第二子程序子程序（取决于是否有故障），确定故障距离（d）。

6. 发明授权

US06529010B1 Location of fault on series-compensated power transmission lines 有权
标题翻译：串联补偿输电线路故障位置
公开(公告)号：US06529010B1
公开(公告)日：2003-03-04
申请号：US09582087
申请日：2000-09-05
申请人： Murari Saha , Jan Izykowski , Eugeniusz Rosolowski , Bogdan Kasztenny
发明人： Murari Saha , Jan Izykowski , Eugeniusz Rosolowski , Bogdan Kasztenny
IPC分类号： G01R3100
CPC分类号： G01R31/085
摘要： The present invention relates to a method for locating a fault on a power transmission line which is series-compensated with capacitors. The site of the fault is determined with the aid of measured currents and voltages at one of the two ends of the power transmission line before and after the occurrence of the fault and a calculating algorithm based on impedance models of the power transmission line before and after the occurrence of the fault.
摘要翻译：本发明涉及一种用电容串联补偿的输电线路故障定位方法。故障现场借助于故障发生前后输电线两端的测量电流和电压，以及基于前后输电线阻抗模型的计算算法，发生故障。

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

US06420876B1 Fault location in a medium-voltage network 有权
标题翻译：中压网络故障定位
公开(公告)号：US06420876B1
公开(公告)日：2002-07-16
申请号：US09646007
申请日：2000-12-27
申请人： Murari Saha , Eugeniusz Rosolowski
发明人： Murari Saha , Eugeniusz Rosolowski
IPC分类号： G01R3108
CPC分类号： G01R31/088 , G01R31/086
摘要： In a medium-voltage network, a method and a device for location of a fault on one of the lines having loaded branches. Common voltage and sum current are measured centrally prior to and after the occurrence of a fault. Positive sequence impedance of the line and a fictitious value of the positive-sequence impedance of the line, as viewed from each branch, is determined. A change of the fictitious value of two consecutive branches from a positive to a negative value is interpreted as if the fault is located on the intermediate line section. The fictitious value defines the distance on the line section from the branch with the latest positive value to the fault. The total distance to the fault is equal to the sum of the line sections up to the branch having positive values plus the distance of the faulty line section.
摘要翻译：在中压网络中，用于在具有加载分支的线路之一上定位故障的方法和装置。公共电压和和电流在发生故障之前和之后集中测量。确定线的正序阻抗和从每个分支观察的线的正序阻抗的虚拟值。两个连续分支从正值到负值的虚拟值的改变被解释为如果故障位于中间线段上。虚拟值定义线路部分与分支具有最新正值到故障的距离。到故障的总距离等于直到具有正值的分支的线路段加上故障线路段的距离的总和。

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