A Second-Order Synchronous Machine Model for Multi-swing Stability Analysis

Ajala, Olaoluwapo; Domínguez-García, Alejandro D.; Sauer, Peter W.; Liberzon, Daniel

doi:10.1109/naps46351.2019.9000368

Cited by 10 publications

(8 citation statements)

References 8 publications

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“…Figures 1. (b), (c), and (e) show that the synchronization stability boundary can discriminate the stability of multiple swings for multiple generators in real time, which is a difficult and important problem [27]. For n-1 operating points of n generators, the system is considered to be out of global synchronization if any of the operating points Similar results are obtained on 3-generator test system (3-gen) by the same steps (see Supplementary Material for details).…”

Section: Stability Boundarymentioning

confidence: 99%

Network‐Independent Grid Synchronous Stability Boundary and Spontaneous Synchronization

Yuan

2024

Preprint

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Spontaneous synchronization on complex networks is widespread in the real world. These synchronization behaviors are believed to be closely related to the network topology. However, it is difficult to obtain complete information in reality. Therefore, a network-independent analysis path is needed. In this study, a synchronized stability boundary equation is derived which is system- and disturbance-independent and applicable to arbitrarily coupled grids. The results also imply that spontaneous synchronization on a network may be network independent. These conclusions provide new research paths for network synchronization and analyze the synchronization stability of grids in a unified way.

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Section: Stability Boundarymentioning

confidence: 99%

Network‐Independent Grid Synchronous Stability Boundary and Spontaneous Synchronization

Yuan

2024

Preprint

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“…This has been validated on different standard arithmetic models (Figure . 2 and Extended Figure 4). Equation ( 1) is also suitable for identifying the stability of a power system with multiple swings 23 and showing the time interval of instability(as in Figure 2c,e).…”

Section: Stability Boundarymentioning

confidence: 99%

System-Inherent Grid Synchronous Stability Boundary and Spontaneous Synchronization

Yuan

2023

Preprint

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Synchronization is a prerequisite for the stability of electrical energy, which is the cornerstone of a functioning society. Identifying whether generators are synchronized or not has been attracting immense research interest. Utilizing synchronized stability boundaries can strongly simplify stability discrimination. However, fundamental issues such as determining accurate stability boundaries remain challenging. In this study, an accurate synchronized stability boundary equation that is independent of the system and disturbances is presented, and it is applicable to an arbitrarily coupled grid. The special structure induced by spontaneous synchronization appears to be only near the stability boundary. The results of this study show that: the synchronous stability boundary is an intrinsic property of the system, independent of its structure and parameters. Synchronization on the network may be independent of the network. These conclusions will challenge the traditional perception of synchronization on networks, and the synchronization stability of the grid can be analyzed in a uniform way.

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“…The simulation results we presented so far were developed using a reduced-order generator model that, in [30], was validated and shown to accurately mimic the behavior of a nineteenth-order model. In this section we provide additional results that show that our proposed synchronization method works when the same system is modeled using the nineteenthorder generator model.…”

Section: High-order Model Testingmentioning

confidence: 99%

“…Synchronization procedure: In addition to angular velocity synchronization, phase synchronization is also important. The phase θ 2 will evolve according to (30), which comes from the physics of the system but was not explicitly taken into account in the above procedure. Due to the imperfect frequency synchronization caused by the disturbance, the phase difference θ 2 − θ 3 will "drift" and there will be a time when θ 2 (t)− θ 3 (t) + d(t) will become close to an integer multiple of 2π.…”

Section: B Synchronization Analysismentioning

confidence: 99%

An Approach to Robust Synchronization of Electric Power Generators

Ajala

Domínguez-García

Liberzon

2018

2018 IEEE Conference on Decision and Control (CDC)

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We consider the problem of synchronizing two electric power generators, one of which (the leader) is serving a time-varying electrical load, so that they can ultimately be connected to form a single power system. Each generator is described by a second-order reduced state-space model. We assume that the generator not serving an external load initially (the follower) has access to measurements of the leader's phase angle, corrupted by some additive disturbances. By using these measurements, and leveraging results on reduced-order observers with ISS-type robustness, we propose a procedure that drives (i) the angular velocity of the follower close enough to that of the leader, and (ii) the phase angle of the follower close enough to that of the point at which both systems will be electrically connected. An explicit bound on the synchronization error in terms of the measurement disturbance and the variations in the electrical load served by the leader is computed. We illustrate the procedure via numerical simulations.

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A Second-Order Synchronous Machine Model for Multi-swing Stability Analysis

Cited by 10 publications

References 8 publications

Network‐Independent Grid Synchronous Stability Boundary and Spontaneous Synchronization

Network‐Independent Grid Synchronous Stability Boundary and Spontaneous Synchronization

System-Inherent Grid Synchronous Stability Boundary and Spontaneous Synchronization

An Approach to Robust Synchronization of Electric Power Generators

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