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21. 发明授权

US06483435B2 Method and device of fault location for distribution networks 有权
标题翻译：配电网故障定位方法及装置
公开(公告)号：US06483435B2
公开(公告)日：2002-11-19
申请号：US09901638
申请日：2001-07-11
申请人： Murari Saha , Eugeniusz Rosolowski
发明人： Murari Saha , Eugeniusz Rosolowski
IPC分类号： G08B2100
CPC分类号： G01R31/088
摘要： The present invention relates to a method for location of a fault which has occurred on one of a plurality of lines in a power distribution network where the location is performed with the measured values of the common supply voltage of the plurality of lines and the currents of the plurality of lines after the occurrence of a fault; calculating the equivalent positive-sequence impedance Z1kf and zero-sequence impedance ZZ0kf of the network in a pre-fault steady state for all M nodes based on knowledge of the configuration and topology of the network, and obtaining, via a superordinate protection system, which of plurality of lines has become faulty and which type of fault has occurred. The invention is characterised by calculating the equivalent impedance Zek using fault loop calculation depending on the fault type as Z _ ek = { Z _ 1 ⁢ k f - Z _ 1 ⁢ f - ⁢ for ⁢ ⁢ phase ⁢ - ⁢ to ⁢ - ⁢ phase ⁢ ⁢ fault ⁢ - ⁢ loop Z _ 1 ⁢ k f + k _ I ⁢ Z _ 0 ⁢ k f - Z _ 1 ⁢ N - ⁢ for ⁢ ⁢ phase ⁢ - ⁢ to ⁢ - ⁢ ground ⁢ ⁢ fault ⁢ - ⁢ loop where k _ I = I _ pN 3 ⁢ I _ p - I _ pN , ⁢ Z _ 1 ⁢ N = V _ ph I _ p - I _ pN / 3 , and: Vph -voltage at the faulty phase, Z1f - positive-sequence fault-loop impedance obtained from measurements, Ip, IpN - adequately: fault-loop and residual currents obtained from measurements, and checking if Im(Zek)≦0, k=1,2, . . . M wherein, upon being fulfilled, the distance to fault is chosen.
摘要翻译：本发明涉及一种在配电网络中的多条线路中发生的故障定位方法，该配电网络中的多条线路的公共电源电压的测量值和发生故障后的多条线路; 基于网络配置和拓扑结构的知识，计算出所有M个节点在故障前稳定状态下网络的等效正序阻抗Z1kf和零序阻抗ZZ0kf，并通过上级保护系统获得的多条线路已经发生故障，发生了哪种类型的故障。本发明的特征在于根据故障类型计算等效阻抗Zek，其故障类型为：故障相位处的Vph电压，从测量获得的Z1f-正序故障回路阻抗，Ip，IpN - 充分：循环和剩余电流，并检查Im（Zek）<= 0，k = 1,2，...。。。其中，在满足之后，选择与故障的距离。

22. 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。

23. 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。

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