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WAMS-supported power mismatch optimization for secure intentional islanding
ID Grozdanovski, Jovancho (Author), ID Mihalič, Rafael (Author), ID Rudež, Urban (Author)

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Abstract
It is expected that a coordinated operation of several system integrity protection schemes will become a necessity in the future. This research represents an innovative strategy for coordinating under-frequency load shedding and intentional controlled islanding schemes for improving electric power system stability and resilience. In the great majority of real-world cases, both approaches follow conventional tactics, i.e., disconnecting a fixed number of feeders at predefined frequency thresholds and isolating a predefined area of a power system regardless of the actual conditions. Under the newly arisen network conditions in which weather-dependent distributed energy sources introduce a significant level of intermittency, conventional approaches need to be upgraded in order to retain a high level of power system operation security. In this paper, a mixed-integer linear programming approach is used to adjust the island size, including/excluding additional substations according to the available amount of generation in the region. The fine-tuning of the power rebalancing is achieved by potentially blocking selected load shedding stages. This minimizes the power imbalance of the newly formed islands, which helps to reduce the number of partial or even total blackouts and also accelerates the power system’s restoration process. The optimization approach was tested on a generic IEEE 39-bus network and shows promising results along with the capability of coping with real-world applications using wide-area monitoring systems as a source of real-time measurements. The results also indicated the importance of appropriate load modelling since both voltage and frequency dependence are recognized to have a significant effect on intentional controlled islanding.

Language:English
Keywords:under-frequency load shedding, intentional controlled islanding, optimization, WAMS
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FE - Faculty of Electrical Engineering
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:13 str.
Numbering:Vol. 14, iss. 10, art. 2790
PID:20.500.12556/RUL-135442 This link opens in a new window
UDC:621.31
ISSN on article:1996-1073
DOI:10.3390/en14102790 This link opens in a new window
COBISS.SI-ID:63071235 This link opens in a new window
Publication date in RUL:15.03.2022
Views:502
Downloads:88
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Record is a part of a journal

Title:Energies
Shortened title:Energies
Publisher:Molecular Diversity Preservation International
ISSN:1996-1073
COBISS.SI-ID:518046745 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:12.05.2021

Secondary language

Language:Slovenian
Keywords:podfrekvenčno razbremenjevanje, namerno, načrtno nadzorovano otočenje, optimizacija, WAMS

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0356
Name:Elektroenergetski sistemi

Funder:ARRS - Slovenian Research Agency
Funding programme:Young Researchers

Funder:ARRS - Slovenian Research Agency
Project number:J2-9232
Name:Upravljanje z viri za zanesljive komunikacije z nizkimi zakasnitvami v pametnih omrežjih - LoLaG

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