# Systems and methods for identifying faulted segments in multiphase power networks

## Abstract

Systems and methods for identifying faulted segment(s) in a multiphase power network may include receiving a current measurement that was measured during a fault, obtaining a set of equivalent sequence impedances for the segments, building a set of sequence bus impedance matrices, selecting a segment, calculating coefficients for the segment based on the set of equivalent sequence impedances for the segment and the sequence bus impedance matrices, calculating an estimated per unit fault distance for the segment based at least partially on the current measurement and the coefficients, identifying the segment as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one, and repeating for each of the segments the calculating coefficients, calculating an estimated per unit fault distance, and identifying as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one.

- Inventors:

- Issue Date:

- Research Org.:
- ABB Inc., Cary, NC (United States)

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 1600424

- Patent Number(s):
- 10,514,412

- Application Number:
- 15/174,687

- Assignee:
- ABB Inc. (Cary, NC)

- DOE Contract Number:
- OE0000547

- Resource Type:
- Patent

- Resource Relation:
- Patent File Date: 06/06/2016

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 42 ENGINEERING

### Citation Formats

```
Kang, Ning, and Mousavi, Mirrasoul.
```*Systems and methods for identifying faulted segments in multiphase power networks*. United States: N. p., 2019.
Web.

```
Kang, Ning, & Mousavi, Mirrasoul.
```*Systems and methods for identifying faulted segments in multiphase power networks*. United States.

```
Kang, Ning, and Mousavi, Mirrasoul. Tue .
"Systems and methods for identifying faulted segments in multiphase power networks". United States. https://www.osti.gov/servlets/purl/1600424.
```

```
@article{osti_1600424,
```

title = {Systems and methods for identifying faulted segments in multiphase power networks},

author = {Kang, Ning and Mousavi, Mirrasoul},

abstractNote = {Systems and methods for identifying faulted segment(s) in a multiphase power network may include receiving a current measurement that was measured during a fault, obtaining a set of equivalent sequence impedances for the segments, building a set of sequence bus impedance matrices, selecting a segment, calculating coefficients for the segment based on the set of equivalent sequence impedances for the segment and the sequence bus impedance matrices, calculating an estimated per unit fault distance for the segment based at least partially on the current measurement and the coefficients, identifying the segment as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one, and repeating for each of the segments the calculating coefficients, calculating an estimated per unit fault distance, and identifying as a potentially faulted segment if the estimated fault distance for the segment is between about zero and about one.},

doi = {},

journal = {},

number = ,

volume = ,

place = {United States},

year = {2019},

month = {12}

}

Works referenced in this record:

##
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patent-application, May 2005

- Choi, Myoen-Song; Lee, Seung-Jae
- US Patent Application 10/722089; 20050114048

##
Method of locating the position of a fault on a power transmission

patent, October 1998

- Johns, Allan T.
- US Patent Document 5,825,189

##
Microgrid Power Distribution System And Power Flow Asymmetrical Fault Analysis Method Therefor

patent-application, December 2013

- Ou, Ting-Chia
- US Patent Application 13/528043; 20130346011