Relay Protection Devices and Technologies for Power System

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: closed (15 February 2024) | Viewed by 895

Special Issue Editors


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Guest Editor
Faculty of Power and Electrical Engineering, Riga Technical University, LV-1010 Riga, Latvia
Interests: out of step automation; under-frequency protection including load shedding; wide area protection; fault location; distance protection; signal processing for protection purposes; innovative control strategies; energy storage systems automation

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Guest Editor
Faculty of Electrical and Environmental Engineering, Riga Technical University, Azenes street 12/1 LV-1048 Riga, Latvia
Interests: fault location; distance protection; single phase auto reclosing; directed overcurrent protection; earth fault protection

Special Issue Information

Dear Colleagues,

The transition in power systems toward more green and sustainable future puts forward new challenges for protection and automation. Distributed low-inertia generation, data technologies introduced to smart networks, and the emergence of “distributed offices” with great demand for safe power supply from customers mean there is a necessity to make a step forward in protection and fault automation. New developments in signal processing, communication, and decision support open a wide field of innovative possibilities in the concerned area. 

The aim of this Special Issue is to obtain a complete overview of advanced methods, devices, technologies. and control logistics applied in the area of power generation, transition, and distribution to identify, isolate, and prevent faults, blackouts, etc., to ensure there is stable and reliable power supply.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

Protection; system stability; under-frequency protection including load shedding, wide area measurement implementation, fault location, smart control, HVDC lines, and substation protection; microgrid protection; signal processing for protection purposes; supervisory control and data acquisition systems; and intelligent electronic devices.

Prof. Dr. Antans Sauhats
Dr. Aleksandrs Dolgicers
Guest Editors

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Keywords

  • protection
  • system stability
  • under-frequency protection including load shedding
  • wide area measurement implementation
  • fault location
  • smart control
  • HVDC lines and substations protection
  • microgrid protection

Published Papers (1 paper)

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Research

15 pages, 4860 KiB  
Article
Fault Location Method for Distribution Network Using an Additional Inductance Strategy
by Zonglei Yang, Chao Xie and Chunya Yin
Electronics 2024, 13(4), 712; https://doi.org/10.3390/electronics13040712 - 9 Feb 2024
Viewed by 685
Abstract
In distribution networks, time asynchrony exists between the phasor measuring unit (PMU) at both ends of a line, and the effective measurement time of the devices is short, leading to insufficient accuracy in phasor measurements. This paper proposes a fault location method for [...] Read more.
In distribution networks, time asynchrony exists between the phasor measuring unit (PMU) at both ends of a line, and the effective measurement time of the devices is short, leading to insufficient accuracy in phasor measurements. This paper proposes a fault location method for distribution networks that employ an additional inductance strategy to address the limited location accuracy caused by time asynchrony and the inadequate accuracy of phasor measurement devices. The method enhances the stability and accuracy of phase measurement by connecting an additional inductance after the online circuit breaker, thus extending the effective measurement time. It uses the symmetrical component method to obtain the positive-sequence and negative-sequence networks following a fault. Time asynchrony is treated as an equivalent asynchronous phase angle, which is then applied to the positive and negative-sequence voltage components. The impact of time asynchrony is mitigated by compensating for the phase angle difference using the ratio of the positive-sequence voltage component to the negative-sequence voltage component. This approach provides the fault location function and has improved the accuracy of fault location, which is advantageous for rapid fault repair. Full article
(This article belongs to the Special Issue Relay Protection Devices and Technologies for Power System)
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