A simple direct method for fast transient stability assessment of large power systems

Xue, Yusheng; Cutsem, Th. Van; Ribbens-Pavella, M.

doi:10.1109/59.192890

Cited by 236 publications

(82 citation statements)

References 12 publications

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“…In the transient period, the critical machines move apart from the remaining ones. Considering the relative motion of the critical synchronous generators with respect to the remaining synchronous generators, a multi-machine power system can be equivalent to an OMIB system [18]. The motion of the equivalent OMIB system is described by:…”

Section: Eeac Theorymentioning

confidence: 99%

“…Aacc, Adecmax are the equivalent accelerating area and the equivalent maximum decelerating area of the whole system respectively. The transient stability of a multi-machine power system can be assessed by using equal area criterion combined with the equivalent power curves plotted in Figure 4 [18]. An index to measure the system transient stability, which is called as the transient stability margin, is defined as:…”

Section: Eeac Theorymentioning

confidence: 99%

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Impact Study of PMSG-Based Wind Power Penetration on Power System Transient Stability Using EEAC Theory

Liu

et al. 2015

Energies

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Abstract:Wind turbines with direct-driven permanent magnet synchronous generators (PMSGs) are widely used in wind power generation. According to the dynamic characteristics of PMSGs, an impact analysis of PMSG-based wind power penetration on the transient stability of multi-machine power systems is carried out in this paper based on the theory of extended equal area criterion (EEAC). Considering the most severe PMSG integration situation, the changes in the system's equivalent power-angle relationships after integrating PMSGs are studied in detail. The system's equivalent mechanical input power and the fault period electrical output power curves are found to be mainly affected. The analysis demonstrates that the integration of PMSGs can cause either detrimental or beneficial effects on the system transient stability. It is determined by several factors, including the selection of the synchronous generators used to balance wind power, the reactive power control mode of PMSGs and the wind power penetration level. Two different simulation systems are also adopted to verify the analysis results.

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Section: Eeac Theorymentioning

confidence: 99%

Section: Eeac Theorymentioning

confidence: 99%

Impact Study of PMSG-Based Wind Power Penetration on Power System Transient Stability Using EEAC Theory

Liu

et al. 2015

Energies

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“…Since the above contribution is normally beneficial to system stability, the direct methods can only claim a conservative estimation. With the above conditions, any additional simplification introduced in the analysis, or in the computational procedure will further weaken the overall accuracy of the results [12]. Moreover, the performance of grouping generators depends on the value ε.…”

Section: Introductionmentioning

confidence: 99%

Novel Techniques for Real Time Computing Critical Clearing Time SIME-B and CCS-B

Dinh¹,

Nguyen²,

Yoon³

2013

Journal of Electrical Engineering and Technology

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-Real time transient stability assessment mainly depends on real-time prediction.Unfortunately, conventional techniques based on offline analysis are too slow and unreliable in complex power systems. Hence, fast and reliable stability prediction methods and simple stability criterions must be developed for real time purposes. In this paper, two new methods for real time determining critical clearing time based on clustering identification are proposed. This article is covering three main sections: (i) clustering generators and recognizing critical group; (ii) replacing the multi-machine system by a two-machine dynamic equivalent and eventually, to a one-machineinfinite-bus system; (iii) presenting a new method to predict post-fault trajectory and two simple algorithms for calculating critical clearing time, respectively established upon two different transient stability criterions. The performance is expected to figure out critical clearing time within 100ms-150ms and with an acceptable accuracy.

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“…Approximate calculation of the CCT of the 2000OPs, for a 3~bSC at each one of the 31 generator buses, using the extended equal area criterion (EEAC) (Xue et al, 1988). This gave us good information about the relative severity of these contingencies in relation to the OPs represented in the data base, and allowed us to select three "interesting" ones for our investigations.…”

Section: Transient Stability (Pre)analysis and Attribute Calculationmentioning

confidence: 99%

Decision trees and transient stability of electric power systems

Wehenkel

Pavella

1991

Automatica

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A simple direct method for fast transient stability assessment of large power systems

Cited by 236 publications

References 12 publications

Impact Study of PMSG-Based Wind Power Penetration on Power System Transient Stability Using EEAC Theory

Impact Study of PMSG-Based Wind Power Penetration on Power System Transient Stability Using EEAC Theory

Novel Techniques for Real Time Computing Critical Clearing Time SIME-B and CCS-B

Decision trees and transient stability of electric power systems

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