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Multiagent-Based Distribution AutomationSolution for Self-Healing Grids
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems. (PSMIX)
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems. (PSMIX)ORCID iD: 0000-0002-2014-0444
Ericsson Innovations Russia.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems. (PSMIX)
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2015 (English)In: IEEE transactions on industrial electronics (1982. Print), ISSN 0278-0046, E-ISSN 1557-9948, Vol. 62, no 4, 2620-2628 p.Article in journal (Refereed) Published
Abstract [en]

A multiagent-based distribution automationsolution is proposed to be used in the distribution of selfhealinggrids to solve the service restoration part of theFault Location, Isolation and Service Restoration (FLISR)task. The solution reduces the grid topology to an undirectedweighted graph and executes a distributed implementationof Prim’s minimum spanning tree algorithm tosolve the problem. The solution is compliant with state-ofthe-art standards within smart grids, including but not limitedto IEC61850. To test the performance of the algorithm,a testbed is assembled consisting of a physical dc gridmodel and several Arduino microcontrollers and RaspberryPi computers. The test results show that the proposedalgorithm can handle complex FLISR scenarios.

Place, publisher, year, edition, pages
2015. Vol. 62, no 4, 2620-2628 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-165047DOI: 10.1109/TIE.2014.2387098ISI: 000351406000058Scopus ID: 2-s2.0-84924856035OAI: oai:DiVA.org:kth-165047DiVA: diva2:806897
Note

QC 20150505

Available from: 2015-04-22 Created: 2015-04-22 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Cost-effective Communication and Control Architectures for Active Low Voltage Grids
Open this publication in new window or tab >>Cost-effective Communication and Control Architectures for Active Low Voltage Grids
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The monitoring and control of low voltage distribution grids has historically been disregarded due to the unidirectional flow of power. However, nowadays the massive integration of distributed energy resources into distribution grids, such as solar photovoltaics, distributed storage, electric vehicles and demand response programs, presents some challenges. For instance, the unidirectional top-down power flow is being replaced by power flows in any direction: top-down and bottom-up. This paradigm shift adds extra regulatory, economic, and technical complexity for the Distribution System Operators (DSO). Thus to overcome the possible operational constraints, thermal limits, or voltage problems in the grid, an update of the existing electricity infrastructures is required. In response to this new situation, this thesis investigates the cost-effective communication and control architectures that are required for active low voltage grid monitoring and control applications, considering the regulatory constraints and the efficient utilization of the assets from a DSO’s perspective. The solutions include: i) optimal sensor placement configuration to perform low voltage state estimation, ii) optimal metering infrastructure designs for active low voltage monitoring applications, iii) coordinated control strategies to allow the integration of microgrid-like structures into the distribution grids, iv) optimal placement of actuators for operating the control strategies, v) a multiagent-based control solution for self-healing and feeder reconfiguration applications, and vi) a framework model and simulations to assess the reliability of the ICT infrastructure that enables the monitoring and control applications. As concluding remark, since the deployment of technology at low voltage grids is restricted to assets owned by the DSO, the operability of the grid is limited. This condition makes it so that the required communication and control enhancement solutions shall prioritize cost-effectiveness over comprehensiveness and complexity. Thus, the results from the presented studies show that it is essential to perform thorough cost-benefit analyses of the potential improvement solutions for each grid, because this will allow deploying the right technology only at the necessary locations.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2017. 69 p.
Series
TRITA-EE, ISSN 1653-5146 ; 2017:160
Keyword
Active low voltage distribution grids, CAPEX & OPEX, communication & control architectures, cost-effectiveness, MPC, multiagent systems, photovoltaics, voltage control.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-217271 (URN)978-91-7729-588-4 (ISBN)
Public defence
2017-12-18, Kollegiesal, Brinellvägen 8, KTH-huset, floor 4, KTH Campus, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
SweGRIDS - Swedish Centre for Smart Grids and Energy Storage
Note

QC 20171106

Available from: 2017-11-06 Created: 2017-11-06 Last updated: 2017-11-28Bibliographically approved

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Nordström, Lars

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