公开(公告)号：US4362986A

公开(公告)日：1982-12-07

申请号：US196760

申请日：1980-10-14

申请人： James J. Burke ,  Dale A. Douglass ,  Robert A. Lacy ,  Richard J. Murphy ,  Delano D. Wilson ,  Jonathan B. Wright

发明人： James J. Burke ,  Dale A. Douglass ,  Robert A. Lacy ,  Richard J. Murphy ,  Delano D. Wilson ,  Jonathan B. Wright

IPC分类号： G01R31/02

CPC分类号： G01R31/024

摘要： A selected point in an electric power system is monitored for subsequent fault analysis. The voltage and current at the point is continuously sampled with samples for a predetermined period of time being temporarily stored in memory. In response to a Fault Event, voltage and current samples at differing sample rates and for differing periods of time are recorded. Voltage and current samples after a Cold Load Pickup are recorded, also the recorded samples allow later analysis of the fault and identification of the cause of the fault.

摘要翻译： 监控电力系统中的选定点以进行后续故障分析。 该点处的电压和电流被连续采样，样本暂时存储在存储器中一段预定的时间。 响应于故障事件，记录不同采样率和不同时间段的电压和电流采样。 记录冷负荷后的电压和电流样本，记录的样本也可以随后分析故障并识别故障原因。

公开(公告)号：US4370609A

公开(公告)日：1983-01-25

申请号：US271222

申请日：1981-06-08

申请人： Delano D. Wilson ,  Dale E. Hedman

发明人： Delano D. Wilson ,  Dale E. Hedman

IPC分类号： G01R31/02 ,  G01R31/08

CPC分类号： G01R31/086 ,  G01R31/021 ,  Y04S10/522

摘要： A device for locating faults on the lines of electrical power distribution systems, including generally a variable impedance means adapted for connection in series with an electrical power line, and means for switching such variable impedance means between a first low impedance value when an initial current I.sub.1 of predetermined level flows on the power line for a predetermined period of time to enable detection of a fault condition, and a second high impedance value which limits the flow of current to a low level I.sub.2. A meter or other indicating device provides a reading of the current I.sub.1 to determine if a fault condition exists. In this fashion, the fault locator device limits both the magnitude and the time duration of the current when testing for a fault, so as not to adversely effect any system components.

摘要翻译： 一种用于定位配电系统线路上的故障的装置，包括一般包括适于与电力线串联连接的可变阻抗装置，以及用于在初始电流I1 的预定电平在电力线上流动预定时间段以使得能够检测到故障状况，以及将电流流动限制到低电平I2的第二高阻抗值。 仪表或其他指示装置提供电流I1的读数以确定故障状况是否存在。 以这种方式，故障定位装置在测试故障时限制电流的大小和持续时间，从而不会对任何系统组件产生不利影响。