Short‐Circuit Point Estimation Method for Distribution Lines Using Smart‐Meters

Author:

Kodama Yasuhiro1,Otani Kenji1

Affiliation:

1. National Institute of Advanced Industrial Science and Technology Fukushima Renewable Energy Institute AIST (FREA), 2‐2‐9, Machiikedai, Koriyama Fukushima 963‐0298 Japan

Abstract

The presence of a substantial short‐circuit current generates a large electromagnetic repulsive force. The energy of such a short‐circuit current increases the likelihood of equipment damage. Furthermore, the occurrence of short‐circuits disrupts the stable supply of electric power. When a short‐circuit occurs in a distribution line, short‐circuit point identification is realized based on information such as overcurrent indicators and equipment damage caused by the short‐circuit. However, there is no established method for promptly pinpointing the short‐circuit location. Therefore, this study proposes a short‐circuit point estimation method for distribution lines using smart‐meters; whose performance is anticipated to improve in the future. The proposed method involved using smart‐meter voltage measurements to measure and determine the changes in the voltage drop slope, caused by the distribution‐substation short‐circuit currents and load currents, from the short‐circuit location to the end point. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

Publisher

Wiley

Reference17 articles.

1. Electric Technology Research Association.Advancement of distribution automation system technology.2016;72(3):113(in Japanese).

2. Agency for Natural Resources and Energy.“Typhoon” and “Electricity” ‐ Resilience of electricity considering long‐term power outages.https://www.enecho.meti.go.jp/about/special/johoteikyo/typhoon.html. Accessed January 2020.

3. Electric Technology Research Association.Advancement of distribution automation system technology.2016;72(3):118 (in Japanese).

4. 38th Committee on Natural Resources and Energy Energy Conservation and New Energy Subcommittee New Energy Subcommittee/Electricity and Gas Business Subcommittee Electricity and Gas Basic Policy Subcommittee Grid System Working Group.Material 2–2 efforts and issues towards the next generation of networks.https://www.meti.go.jp/shingikai/enecho/shoene_shinene/shin_energy/keito_wg/pdf/038_02_02.pdf. Accessed April 2022.

5. Next‐generation smart meter system review committee METI.Summary of next‐generation smart meter system review committee.2022.

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