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Design Requirements of Wide-Area Damping Systems-Using Empirical Data From a Utility IP Network
Ventyx ABB Co, S-10044 Vasteras, Sweden.ORCID iD: 0000-0003-4386-3781
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-3014-5609
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2014 (English)In: IEEE Transactions on Smart Grid, ISSN 1949-3053, E-ISSN 1949-3061, Vol. 5, no 2, 829-838 p.Article in journal (Refereed) Published
Abstract [en]

Phasor Measurement Unit (PMU) communication delays and data frame losses play a critical role in designing of wide-area damping systems driven by synchrophasor technology. While there are a plethora of simulation-based studies addressing this issue, empirical results from actual PMUs deployed in the field are rare. This paper provides important insights into the characterization of PMU communication delays and data frame losses based on empirical results collected from a utility IP network. Additionally, efforts are also made to elicit design requirements considering the above PMU data quality problems. Furthermore, three distinct delay-robust wide-area damping control schemes parameterized according to the proposed requirements are validated against the empirical delays and data frame losses. Time-domain simulation results suggest that the control schemes in question can effectively stabilize the power system in all of the tested scenarios.

Place, publisher, year, edition, pages
2014. Vol. 5, no 2, 829-838 p.
Keyword [en]
Communication delay, data frame loss, delay-robust control, inter-area oscillation, IP network, phasor measurement unit, wide-area monitoring and control system
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-129073DOI: 10.1109/TSG.2013.2290493ISI: 000331985300030Scopus ID: 2-s2.0-84897590564OAI: oai:DiVA.org:kth-129073DiVA: diva2:649869
Note

QC 20140414

Available from: 2013-09-19 Created: 2013-09-19 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Data Quality in Wide-Area Monitoring and Control Systems: PMU Data Latency, Completness, and Design of Wide-Area Damping Systems
Open this publication in new window or tab >>Data Quality in Wide-Area Monitoring and Control Systems: PMU Data Latency, Completness, and Design of Wide-Area Damping Systems
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The strain on modern electrical power system operation has led to an ever increasing utilization of new Information Communication Technology (ICT) systems to enhance the reliability and efficiency of grid operation. Among these proposals, Phasor Measurement Unit (PMU)-based Wide-Area Monitoring and Control (WAMC) systems have been recognized as one of the enablers of “Smart Grid”, particularly at the transmission level, due to their capability to improve the real-time situational awareness of the grid. These systems differ from the conventional Supervisory Control And Data Acquisition (SCADA) systems in that they provide globally synchronized measurements at high resolutions. On the other hand, the WAMC systems also impose several stringent requirements on the underlying ICT systems, including performance, security, and availability, etc. As a result, the functionality of the WAMC applications is heavily, but not exclusively, dependent on the capabilities of the underlying ICT systems. This tight coupling makes it difficult to fully exploit the benefits of the synchrophasor technology without the proper design and configuration of ICT systems to support the WAMC applications. The strain on modern electrical power system operation has led to an ever increasing utilization of new Information Communication Technology (ICT) systems to enhance the reliability and efficiency of grid operation. Among these proposals, Phasor Measurement Unit (PMU)-based Wide-Area Monitoring and Control (WAMC) systems have been recognized as one of the enablers of “Smart Grid”, particularly at the transmission level, due to their capability to improve the real-time situational awareness of the grid. These systems differ from the conventional Supervisory Control And Data Acquisition (SCADA) systems in that they provide globally synchronized measurements at high resolutions. On the other hand, the WAMC systems also impose several stringent requirements on the underlying ICT systems, including performance, security, and availability, etc. As a result, the functionality of the WAMC applications is heavily, but not exclusively, dependent on the capabilities of the underlying ICT systems. This tight coupling makes it difficult to fully exploit the benefits of the synchrophasor technology without the proper design and configuration of ICT systems to support the WAMC applications.

In response to the above challenges, this thesis addresses the dependence of WAMC applications on the underlying ICT systems. Specifically, two of the WAMC system data quality attributes, latency and completeness, are examined together with their effects on a typical WAMC application, PMU-based wide-area damping systems. The outcomes of this research include quantified results in the form of PMU communication delays and data frame losses, and probability distributions that can model the PMU communication delays. Moreover, design requirements are determined for the wide-area damping systems, and three different delay-robust designs for this WAMC application are validated based on the above results. Finally, a virtual PMU is developed to perform power system and communication network co-simulations.

The results reported by this thesis offer a prospect for better predictions of the performance of the supporting ICT systems in terms of PMU data latency and completeness. These results can be further used to design and optimize the WAMC applications and their underlying ICT systems in an integrated manner. This thesis also contributes a systematic approach to design the wide-area damping system considering the PMU data latency and completeness. Finally, the developed virtual PMU, as part of a co-simulation platform, provides a means to investigate the dependence of WAMC applications on the capabilities of the underlying ICT systems in a cost-efficient manner.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. xii, 47 p.
Series
Trita-EE, ISSN 1653-5146 ; 2013:038
Keyword
Phasor Measurement Units, Wide-Area Monitoring and Control systems, latency, completeness, power system communication, simulation, empirical study
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-129078 (URN)978-91-7501-886-7 (ISBN)
Public defence
2013-11-08, Sal F3, Lindstedtsvägen 26, KTH, Stockholm, 11:17 (English)
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Supervisors
Note

QC 20131015

Available from: 2013-10-15 Created: 2013-09-19 Last updated: 2013-10-15Bibliographically approved

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Zhu, KunNordström, Lars

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