Search International and National Patent Collections

1. (WO2018080523) DATA COST EFFECTIVE FAST SIMILARITY SEARCH WITH PRIORITY ACCESS

Pub. No.:    WO/2018/080523    International Application No.:    PCT/US2016/059572
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Oct 29 01:59:59 CEST 2016
IPC: G01R 25/00
G01R 27/00
G06F 1/26
G06F 1/28
G06F 19/00
H02J 3/18
H02J 3/24
Applicants: HITACHI, LTD.
Inventors: TAKATA, Mika
NISHIKAWA, Norifumi
YAMAZAKI, Jun
Title: DATA COST EFFECTIVE FAST SIMILARITY SEARCH WITH PRIORITY ACCESS
Abstract:
Example implementations described herein are directed to detecting similarity between anomalous events that are currently occurring or have previously occurred transmission power system based on phasor management unit (PMU) data to provide information to grid operators with online decision support. From the high-resolution time synchronized PMU data, the events can be quickly retrieved and compared so that operators can be provided with remedy actions that were attempted in response to the previous events. Utilization of PMU information for such decision support may compliment operation practices relying on supervisory control and data acquisition (SCADA) measurements by allowing a much fast response to the currently occurring event. Accurate identification of similar, historical events can advise grid operators of the cause of disturbances and provide ideas for response. Implementations of the proposed technology may improve the resilience and reliability of the transmission power systems.