Wide area dynamic monitoring and stability controls

Sakis Meliopoulos, George Cokkinides, Renke Huang, Evangelos Farantatos, Sungyun Choi, Yonghee Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Citations (Scopus)

Abstract

This paper presents a new approach for wide area dynamic monitoring of the system with many possible applications. One such application is discussed to provide real time stability controls. The new approach utilizes a substation based dynamic state estimation. The substation based dynamic state estimation uses data from relays, PMUs, meters, FDRs etc in the substation only thus avoiding all issues associated with transmission of data and associated time latencies. The substation based dynamic state estimator provides accurate representation of the dynamic state of the system. The dynamic state estimator runs at rates comparable to the suggested rates in the synchrophasors standard C37.118. Presently it has been implemented to execute 10 times per second thus providing the dynamic state of the substation 10 times per second. The results of the substation based dynamic state estimator are transmitted to a central location for monitoring the dynamic state of the system. A major advantage is the fact that only the dynamic state of the substation is transmitted instead of the raw PMU data that typical wide area monitoring implementations use. Note that the data describing the dynamic state is much less that the raw data of the PMUs. This fact facilitates the speedier transmission of the data in addition to the advantage of a more accurate dynamic state as opposed to the raw data. This infrastructure can be used for a number of applications. The paper focuses on transient stability monitoring, identification of out of step conditions and control. We propose an approach that is based on accurate evaluation of the system energy function (Lyapunov indirect method) and extraction of stability properties from the energy function. Specifically, we provide a methodology for determining the required data accuracy for the reliable real time estimation of the energy function. When the data meet these requirements, the estimated energy function can be visualized and animated providing a powerful visual tool for observing the transient stability or instability of the system. The infrastructure of the substation based dynamic state estimator provides the required accuracy and the ability to predict instabilities before they occur.

Original languageEnglish
Title of host publication2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010
DOIs
Publication statusPublished - 2010 Oct 25
Externally publishedYes
Event2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010 - Rio de Janeiro, Brazil
Duration: 2010 Aug 12010 Aug 6

Publication series

Name2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010

Conference

Conference2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010
CountryBrazil
CityRio de Janeiro
Period10/8/110/8/6

Fingerprint

Monitoring
State estimation
Phasor measurement units
Lyapunov methods

Keywords

  • Data accuracy
  • Energy function
  • GPS-synchronization
  • PMU
  • Transient stability

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Control and Systems Engineering

Cite this

Meliopoulos, S., Cokkinides, G., Huang, R., Farantatos, E., Choi, S., & Lee, Y. (2010). Wide area dynamic monitoring and stability controls. In 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010 [5563253] (2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010). https://doi.org/10.1109/IREP.2010.5563253

Wide area dynamic monitoring and stability controls. / Meliopoulos, Sakis; Cokkinides, George; Huang, Renke; Farantatos, Evangelos; Choi, Sungyun; Lee, Yonghee.

2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010. 2010. 5563253 (2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Meliopoulos, S, Cokkinides, G, Huang, R, Farantatos, E, Choi, S & Lee, Y 2010, Wide area dynamic monitoring and stability controls. in 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010., 5563253, 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010, 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010, Rio de Janeiro, Brazil, 10/8/1. https://doi.org/10.1109/IREP.2010.5563253
Meliopoulos S, Cokkinides G, Huang R, Farantatos E, Choi S, Lee Y. Wide area dynamic monitoring and stability controls. In 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010. 2010. 5563253. (2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010). https://doi.org/10.1109/IREP.2010.5563253
Meliopoulos, Sakis ; Cokkinides, George ; Huang, Renke ; Farantatos, Evangelos ; Choi, Sungyun ; Lee, Yonghee. / Wide area dynamic monitoring and stability controls. 2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010. 2010. (2010 IREP Symposium - Bulk Power System Dynamics and Control - VIII, IREP2010).
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