Distribution network reconfiguration for operational objectives: reducing voltage violation incidents and network losses
As the share of Distributed energy resources (DER) in the low voltage distribution network (DN) is expected to rise, a higher and more variable electric load and generation could stress the DNs, leading to increased congestion and power losses. To address these challenges, DSOs will have to invest i...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
14.09.2024
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Subjects | |
Online Access | Get full text |
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Summary: | As the share of Distributed energy resources (DER) in the low voltage
distribution network (DN) is expected to rise, a higher and more variable
electric load and generation could stress the DNs, leading to increased
congestion and power losses. To address these challenges, DSOs will have to
invest in strengthening the network infrastructure in the coming decade. This
paper looks to minimize the need for flexibility through dynamic DN
reconfiguration. Typically, European DNs predominantly use manual switches.
Hence, the network configuration is set for longer periods of time. Therefore,
an opportunity is missed to benefit from more short-term dynamic switching. In
this paper, a method is proposed which identifies the best manual switches to
replace with remotely controlled switches based on their performance in terms
of avoided voltage congestion incidents and DN power losses. The developed
method is an exhaustive search algorithm which divides the problem into 3
subsequent parts, i.e. radial configuration identification, multi-period power
flow and impact assessment for reconfigurable switch replacement on DN
operation. A numerical evaluation shows that replacing the two top-ranked
switches in the test case reduced the power losses by 4.51% and the voltage
constraint violations by 38.17%. Thus, investing in only a few reconfigurable
switches can substantially improve the operational efficiency of DNs. |
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DOI: | 10.48550/arxiv.2409.09460 |