Transient Power System Analysis With Measurement-Based Gray Box and Hybrid Dynamic Equivalents

Stanković, A.M.; Sarić, Andrija T.

doi:10.1109/tpwrs.2003.821459

Cited by 50 publications

(38 citation statements)

References 18 publications

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“…Within this respect we would like to pinpoint some recent research carried out in constructing the dynamic equivalents through artificial neural networks reported in [18], [19] and [20]. The developed methodologies provide a voltage-current dynamic equivalent of an external system with unknown structure.…”

Section: A Construction and Use Of Dynamic Equivalentsmentioning

confidence: 99%

“…The developed methodologies provide a voltage-current dynamic equivalent of an external system with unknown structure. In [18] and [19] two neural networks are used, one to extract states of the reduced order equivalent and one to predict the new states values of the external system. In [20] the external system is represented in an input-output formulation and only one neural network is used to predict system dynamic behavior.…”

Section: A Construction and Use Of Dynamic Equivalentsmentioning

confidence: 99%

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A collaborative framework for multi-area dynamic security assessment of large scale systems

Wehenkel

Glavić²,

Ernst³

2007

2007 IEEE Lausanne Power Tech

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Abstract-In this paper we propose a collaborative framework to carry out multi-area dynamic security assessment over an interconnection operated by a team of TSOs responsible of different areas. In this framework each TSO does his part of the work and, thanks to information exchange and coordination rules, potential security problems can be detected by all the involved TSOs. We find that distributed multi-area security assessment is achievable and useful if, on the one hand, each TSO can provide an appropriate dynamic equivalent model of his area and if, on the other hand, he is able to publish stability bounds on his inflows under which the dynamic performance of his system would remain acceptable. We then discuss the notions of dynamic equivalent model and external stability domain characterization of an area and identify techniques for deriving such equivalents and stability bounds within the proposed framework.

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Section: A Construction and Use Of Dynamic Equivalentsmentioning

confidence: 99%

Section: A Construction and Use Of Dynamic Equivalentsmentioning

confidence: 99%

A collaborative framework for multi-area dynamic security assessment of large scale systems

Wehenkel

Glavić²,

Ernst³

2007

2007 IEEE Lausanne Power Tech

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“…In [19] an equivalent model of a microgrid is studied for the dynamic analysis based on an optimization method. In [20] a grey-box and hybrid dynamic equivalent model is proposed for transient power system analysis, and the measurement data of point of common couple (PCC) are collected for the parameter identification. A dynamic equivalent model of an Active Distribution Network based on a grey-box approach is proposed in [21], where the equivalent model comprises a generator and a composite load.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Equivalent Modeling of a Grid-Tied Microgrid Based on Characteristic Model and Measurement Data

et al. 2017

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Abstract:Microgrids can significantly improve the utilization of distributed generation (DG) and the reliability of the power supply. However, in the grid-tied operational mode, the interaction between the microgrid and the distribution network cannot be ignored. The paper proposes an equivalent modeling method for the microgrid under grid-tied mode based on a characteristic model. It can simplify the microgrid model in the numerical simulation of the distribution network. The proposed equivalent model can present the dynamic response of a microgrid but not miss any of its primary characteristics. The characteristic model is represented by a low-order time-varying differential equation with the same characteristics of the original microgrid system. During the modeling process, the voltage and the power exchanged between the microgrid and distribution network are collected as the training data for the identification of model parameters. A recursive damped least squares algorithm (RDLS) is used for the parameter identification. A microgrid system containing different DGs is built to test the proposed modeling method in DIgSILENT, and the results show that the proposed dynamic equivalent modeling method is effective and the characteristic model can present the dynamic behaviors of the detailed model of a microgrid.

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“…For this purpose, three main model reduction approaches, namely: (i) coherency methods based on identifying coherent groups of generators [5][6][7][8] modal methods based on linearised models of the external systems [3,9,10], and (iii) system identification methods based on measurement and simulation responses [11][12][13][14] have been considered.…”

Section: Introductionmentioning

confidence: 99%

Representation of a grid-tied microgrid as a reduced order entity for distribution system dynamics and stability studies

Jayawardena

Meegahapola

Robinson

et al. 2015

International Journal of Electrical Power & Energy Systems

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Transient Power System Analysis With Measurement-Based Gray Box and Hybrid Dynamic Equivalents

Cited by 50 publications

References 18 publications

A collaborative framework for multi-area dynamic security assessment of large scale systems

A collaborative framework for multi-area dynamic security assessment of large scale systems

Dynamic Equivalent Modeling of a Grid-Tied Microgrid Based on Characteristic Model and Measurement Data

Representation of a grid-tied microgrid as a reduced order entity for distribution system dynamics and stability studies

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