Application of dynamic REI reduction

Stadler, Josef; Renner, Herwig

doi:10.1109/isgteurope.2013.6695311

Cited by 10 publications

(2 citation statements)

References 12 publications

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“…The dynamic equivalent of REI (Radial Equivalent Independent), similar in implementation to the center of inertia model, but providing equality power losses in the steady state for the initial and equivalent networks. This is achieved by introducing a temporary fictitious "network of zero power balance", electrically connecting the nodes of these networks with each other [17,18].…”

Section: Reducing the Power System Dynamics Models -Two-machine Equiv...mentioning

confidence: 99%

Coherence indicators of generators for express assessment of electric power system transient stability

Efimov

Stashkevich

2023

E3S Web of Conf.

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A brief overview of the generator coherence indicators is presented, the areas and limitations of their applicability are indicated. The application of the area method for the rapid assessment of the transient stability of complex multi-machine electric power system based on the features of the dynamics of the system behavior, determined by the heterogeneous structure of the electrical network, is considered. A distinctive feature of the proposed approach is the use of the characteristics of the heterogeneity of the power system structure, which determine the presence of weak links (or cut-sets) of the electrical network, which are critical from the point of view of a possible violation of the system stability.

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Section: Reducing the Power System Dynamics Models -Two-machine Equiv...mentioning

confidence: 99%

Coherence indicators of generators for express assessment of electric power system transient stability

Efimov

Stashkevich

2023

E3S Web of Conf.

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“…In this approach, the power and current injection in external areas are aggregated to a fictitious bus. e number of fictitious buses created depends on the number of desired generators and loads [36]. en, Gaussian elimination is used to reduce the grid resulting from power aggregation.…”

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confidence: 99%

Application of Data-Driven Tuned Fuzzy Inference System for Static Equivalencing of Power Systems with High Penetration of Renewable Energy

Hailu¹,

Nyakoe

Muriithi

2022

Journal of Electrical and Computer Engineering

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To reduce the complexity of multiarea power systems during power flow study and security assessment, equivalencing of external power systems is essential. In this paper, external power systems are modeled as adaptive loads representing the tie-line flows varying with system operating conditions. The fuzzy inference system tuned by hybrid genetic-simulated annealing (HGSA-FIS) is proposed to predict the active and reactive power of adaptive loads from forecasted renewable energy (RE) generation and loads demand. The performance of proposed equivalent has been evaluated with an RTS-GMLC by comparing the power flow results in the internal system before and after equivalencing under varying RE and load demand scenarios. The results demonstrate the robustness of HGSA-FIS-based equivalent under varying RE generation and load demand. Furthermore, the proposed equivalent performs close to ANN-based equivalent and outperforms ANFIS-based equivalent. To practically implement the proposed approach, the neighboring system operators are required to exchange only the forecast data of RE generation and load demand, and the equivalent needs to be updated upon major grid changes.

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