US 12,235,310 B2
System and method for analyzing fault data of a power transmission network
Obbalareddi Demudu Naido, Bangalore (IN); Neethu George, Bangalore (IN); and Nandkishor Kubal, Pune (IN)
Assigned to HITACHI ENERGY LTD, Zürich (CH)
Appl. No. 16/760,843
Filed by Hitachi Energy Ltd, Zürich (CH)
PCT Filed Dec. 29, 2017, PCT No. PCT/IB2017/058500
§ 371(c)(1), (2) Date Apr. 30, 2020,
PCT Pub. No. WO2019/086946, PCT Pub. Date May 9, 2019.
Claims priority of application No. 201741038730 (IN), filed on Oct. 31, 2017.
Prior Publication US 2021/0165032 A1, Jun. 3, 2021
Int. Cl. G01R 31/08 (2020.01); G01R 19/25 (2006.01); G06F 16/25 (2019.01)
CPC G01R 31/086 (2013.01) [G01R 19/2513 (2013.01); G01R 31/088 (2013.01); G06F 16/254 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A system for analyzing fault data in a power transmission network with a plurality of power transmission lines, wherein a plurality of power system devices are distributed across the power transmission network, each power system device configured to perform one or more of measurement of data to generate measured data and processing of the measured data to generate processed data in response to a condition in a corresponding segment of the power transmission network, the system comprising:
a data aggregator configured to receive disturbance data from one or more power system devices of the plurality of power system devices in response to a fault in the corresponding segment of the power transmission network, wherein the received disturbance data comprises one or more of the measured data and the processed data, and wherein the one or more power system devices sample data at a corresponding one or more data sampling rates;
a data analyzer configured to select a fault location technique from a plurality of fault location techniques, wherein the data analyzer is configured to select the fault location technique depending on the data sampling rate of the corresponding power system device of the one or more power system devices, and a topology of a corresponding power transmission line of the power transmission network, wherein the fault location technique is one of a phasor based fault location technique, a time domain based fault location technique, or a travelling wave based fault location technique; and
a fault locator configured to locate the fault in the power transmission network based on the fault location technique selected by the data analyzer, the received disturbance data, system parameters of the corresponding segment of the power transmission network, and geographical information associated with the power transmission network.