METHOD AND APPARATUS FOR DETECTION OF POWER SYSTEM DISTURBANCE WITHIN DIGITAL SUBSTATION

Title:

METHOD AND APPARATUS FOR DETECTION OF POWER SYSTEM DISTURBANCE WITHIN DIGITAL SUBSTATION

Document Type and Number:

WIPO Patent Application WO/2016/141568

Kind Code:

A1

Abstract:

A method for detecting a disturbance in a power system (1) within a digital substation and an apparatus using the same. The method includes: sensing electrical parameters at an end of a transmission line (10); sampling the sensed electrical parameters; extracting traveling-wave information from high frequency component of the samples using a signal processing method; and if the extracted traveling-wave information indicating occurrence of the disturbance, transmitting the extracted traveling-wave information to an intelligent electronic device of the digital substation (11) from a merging unit (112) or non-conventional instrument transformer of the digital substation (11). As compared with the amount of the sample data of the sensed electrical parameters, the amount of the data representing the extracted traveling-wave information is reduced. Thus the extracted traveling-wave information can be transmitted via a data link with a relatively narrow bandwidth, such as the process bus under standard IEC 61850.

Inventors:

LIU KAI (CN)
LI YOUYI (SE)
WANG JIANPING (SE)

Application Number:

PCT/CN2015/074001

Publication Date:

September 15, 2016

Filing Date:

March 11, 2015

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ABB TECHNOLOGY LTD (CH)
LIU KAI (CN)
LI YOUYI (SE)
WANG JIANPING (SE)

International Classes:

H02J13/00; G01R31/08

Domestic Patent References:

WO2014053174A1

2014-04-10

Foreign References:

CN103840556A	2014-06-04
CN102157981A	2011-08-17
CN102122815A	2011-07-13
CN101447698A	2009-06-03
CN102386678A	2012-03-21
KR20040042092A	2004-05-20

Other References: