Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Adaptive data link configuration for WAMC applications using a Stateful Data Delivery Service platform
KTH, School of Electrical Engineering (EES), Electric power and energy systems.ORCID iD: 0000-0002-6330-3055
KTH, School of Electrical Engineering (EES), Electric power and energy systems.ORCID iD: 0000-0003-3014-5609
2016 (English)In: Sustainable Energy, Grids and Networks, ISSN 0284-4354, E-ISSN 2352-4677, Vol. 6, p. 166-175Article in journal (Refereed) Published
Resource type
Text
Abstract [en]

Wide Area Monitoring and Control (WAMC) applications provide, among other things, stability control to power systems by using global measurements. However, these measurements suffer unavoidable Quality of Service (QoS) problems, such as delay, during the transmission through a wide area communication network. Such delays potentially lead to failure of the control application. To overcome these effects, mechanisms that provide robustness to QoS problems for control applications and configuration of communication networks to optimize QoS performance have been proposed by several researchers. To optimize utilization of the communication infrastructure and to adapt to variations in QoS, applications can benefit from an interface to request and obtain QoS information from a managed communication infrastructure. To meet this need, a novel Stateful Data Delivery Service (SDDS) for WAMC applications is proposed in this paper. The SDDS monitors the QoS performance online and provides feedback to one or more WAMC applications. To increase reliability of the applications, the SDDS also provides adaptive data link configuration services. By using online QoS measurements and multiple data sources, the SDDS platform can provide a WAMC application with data fulfilling its requirements. To prove the concept, a case study has been performed and the results of this study show that the application using the SDDS can keep a benchmark power system stable even when original data link QoS performance does not meet the application's requirements. The paper also contains a presentation of the SDDS prototype platform under development as a part of the ongoing research.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 6, p. 166-175
Keywords [en]
Adaptive data link configuration, POD, QoS, Stateful Data Delivery Service, WAMC applications
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:kth:diva-186944DOI: 10.1016/j.segan.2016.04.001ISI: 000377407500017Scopus ID: 2-s2.0-84963856938OAI: oai:DiVA.org:kth-186944DiVA, id: diva2:930585
Note

QC 20160524

Available from: 2016-05-24 Created: 2016-05-16 Last updated: 2019-02-07Bibliographically approved
In thesis
1. Quality Assurance of Time Critical Data Using Adaptive Data Delivery Mechanisms in Smart Grids
Open this publication in new window or tab >>Quality Assurance of Time Critical Data Using Adaptive Data Delivery Mechanisms in Smart Grids
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Smart grids are proposed to integrate renewable energy and to improve the efficiency of power system operation. The challenges of integrating renewable energy are the inherent fluctuations of generation which are difficult to predict which may lead to challenges to the safe operation of power systems. Improving the efficiency of power systems means they should be operated closer to their limits. To solve these challenges, advanced protection and control applications, have been proposed that increase the accuracy of reactions and reduce the response time to events and faults. However, not all the data required for these applications can be delivered by the conventional Supervisory Control And Data Acquisition (SCADA) systems. As an example, synchrophasor data are intended to be delivered via a Wide Area Monitoring and Control (WAMC) system, which can be seen as a parallel data delivery infrastructure to SCADA. As deployment of intelligent substation secondary devices such as Intelligent Electronic Devices (IEDs), Merging Units (MUs), and Phasor Measurement Units (PMUs), data volume and data resolution in the power systems is increasing. To flexibly share data in the power system, different data delivery architectures have been proposed. Flexible data sharing brings benefits of information resiliency from different data sources. But it also raises the requirements on cyber-security for protection of the smart grid applications. Such needs are in turn being gradually addressed by new cyber-security mechanisms.

In this thesis, the main quality attributes for time critical smart grid applications being; data accuracy, information resiliency, communication performance, and cyber-security and their interrelation are studied. Most previous research has been focused on assurance on one of these quality attributes, while in practical implementation the attributes are clearly related and interdependent. There is consequently a lack of study of the interactions between these quality attributes.

This thesis focuses on the interactions of three pairs of these four time critical data quality attributes. The hypothesis of the interaction of each pair has been formulated as research question which is answered in different sections of the thesis. The results of this thesis show that information resiliency can increase the data accuracy and enhance the communication performance assurance to the smart grid application. This is in the thesis shown by two of the contributions presented in this thesis, being the implementation and validation of an adaptive data source selection mechanism to realize at substation level and wide area system level separately. In addition, since cyber-security mechanisms can affect the communication performance, specifically latency, and a trade off between security and performance may be needed. A third contribution in the thesis is a framework incorporating these two time critical quality attributes consisting of  an adaptive cyber-security scheme which contributes to the incorporation of performance requirements.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2018. p. 69
Series
TRITA-EECS-AVL ; 2019:16
Keywords
time critical data quality, adaptive mechanisms, quality assurance, Smart Grid, information resiliency, data accuracy, end-to-end latency, cyber-security, substation automation, power system communication
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering; Industrial Information and Control Systems
Identifiers
urn:nbn:se:kth:diva-243862 (URN)978-91-7873-105-3 (ISBN)
Public defence
2019-03-13, F3, Lindstedtsvägen 26, Stockholm, 22:41 (English)
Opponent
Supervisors
Note

QC 20190208

Available from: 2019-02-08 Created: 2019-02-07 Last updated: 2019-02-08Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Wu, YimingNordström, Lars

Search in DiVA

By author/editor
Wu, YimingNordström, Lars
By organisation
Electric power and energy systems
In the same journal
Sustainable Energy, Grids and Networks
Computer Systems

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 344 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf