Evaluation Method for Equivalent Models of PMSG-Based Wind Farms Considering Randomness

Zheng, Zetian; An, Zhi; Shen, Chen

doi:10.1109/tste.2018.2882854

Cited by 23 publications

(7 citation statements)

References 25 publications

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“…Shortly after this accident, the authors in [17] put forward the dynamic model of the type-3 wind turbines for the SSO/SSR analysis. In recent few years, more SSO/SSR phenomena have been observed in the power systems with growing number of power electronics, such as the SSO/SSR occurring in Guyuan, Hebei Province, China in 2011 [18], and the SSO/SSR among power electronic converter-interfaced wind generators in Hami, Xinjiang, China in 2015 [19], [20]. These incidents have revealed a pressing need to investigate the emerging SSO/SSR phenomena.…”

Section: B Oscillation Issues and Analysis Methodsmentioning

confidence: 99%

“…The second technique of dimension-reduction is to consider the average value of the d-axis impedance and q-axis impedance in dq frame as the dimension-reduced lumped impedance model [61], [62], [65], and the specific equations are presented in (18)- (20). However, this technique is lack of a deep theoretical support.…”

Section: B R-x-criterion-based Oscillatory Stability Assessmentmentioning

confidence: 99%

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Impedance-Based Oscillatory Stability Analysis of High Power Electronics-Penetrated Power Systems—A Survey

Zhou

et al. 2019

IEEE Access

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With increasing power electronics integrated into the power grids, the new types of oscillation issues have posed a critical threat to the secure operation of power grids. Apart from the conventional eigenvalue-based analysis, the impedance-based analysis becomes more attractive for the assessment of the oscillatory stability. This paper presents a systematic survey on the technical matters of the emerging impedance-based oscillatory stability analysis of power systems with high power electronics penetration. Firstly, the detailed derivation of impedance models of the power electronic converter-connected equipment are discussed. Then, common coordinate systems for the derivation of impedance models, as well as the characteristics of the impedance model in different coordinate systems are surveyed. On this basis, the aggregation of the individual impedance models is introduced to derive the lumped impedance model. Additionally, two typical impedance-based oscillatory stability criteria are demonstrated and discussed in details. Finally, the advantages as well as the limitations of the impedance-based oscillatory stability analysis, and the contributions as well as the challenges of the existing studies are summarized. A list of relevant literature is accommodated in the end.

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Section: B Oscillation Issues and Analysis Methodsmentioning

confidence: 99%

Section: B R-x-criterion-based Oscillatory Stability Assessmentmentioning

confidence: 99%

Impedance-Based Oscillatory Stability Analysis of High Power Electronics-Penetrated Power Systems—A Survey

Zhou

et al. 2019

IEEE Access

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“…Power system oscillations or electromechanical oscillation occurrences have always been a challenge in renewable-integrated power systems, which affect the stable operation of the integrated power grid. Analysis of electromechanical oscillation involves two categories, i.e., the frequency and damping performance [91]. Electromechanical oscillation frequency can reflect its potential causes and type.…”

Section: Power System Stability and Oscillationsmentioning

confidence: 99%

Solar, Wind and Their Hybridization Integration for Multi-Machine Power System Oscillation Controllers Optimization: A Review

et al. 2022

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Massive growth in global electrical energy demand has necessitated a genuine exploration and integration of solar and wind energy into the electrical power mix. This incorporation goes a long way in improving the cumulative generated power capacity of the power system. However, wind and solar photovoltaic (PV) are intermittent in nature, making the provisioning of a good maximum power tracking (MPPT) scheme necessary. Furthermore, the integration is characterized by synchronization challenges and introduces various modes of power system oscillations as it is converter-driven. This greatly affects the overall stability of the integrated power mix. Consequently, various technological models have been designed to address these challenges ranging from MPPT schemes, phase-lock loop (PLL), virtual synchronous generator (VSG), power system stabilizers (PSS), flexible AC transmission system (FACTS), coordinated control and artificial intelligence (AI). In this work, a multi-machine power system model is reviewed for integration stability studies. Various technical solutions associated with the integration are also reviewed. MPPT, PLL, VSG, PSS, FACTS, coordinated control, and various optimization technique schemes used for damping controller design are discussed.

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“…Nevertheless, the optimal number of clusters is unknown before computation and this may mean that the computational result is not optimal. An equivalent model with smaller variances of distances and expectations was presented to describe the original complex and high-dimensional model in [25]. Although this type of method can be used for the fast computation of large-scale wind power systems, it cannot effectively take into account the voltage security of each wind turbine due to different levels of model simplification, and it does not consider the transient voltage characteristics of the wind farm.…”

Section: Introductionmentioning

confidence: 99%

Fast computation of voltage/VAR feasible boundaries of wind farms: An adaptive parameter aggregation dimensionality reduction equivalence method

Xue

Niu

Fang

et al. 2023

IET Renewable Power Gen

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Efficient voltage/VAR feasible boundary (VVFB) assessments for large‐scale wind farms can help reduce cascading trip risks. An accurate VVFB assessment result for such large‐scale wind farms, which is essentially a transient security constrained optimal power flow (TSCOPF) problem, may involve dynamic characteristics of all wind turbines in a whole wind farm, and the TSCOPF scale of VVFB assessment is quite huge and difficult to use directly for online computations. Therefore, this paper proposes an adaptive parameter aggregation dimensionality reduction equivalence (APA‐DRE) method to efficiently and accurately solve the VVFB problem. First, the core parameters are combined into an adjacency matrix as an input aggregation sample based on automatic weighting factors. The proposed between‐within proportion index is used to evaluate the aggregation result and determine the optimal aggregation number of input samples. Then, the original VVFB model is accurately transformed into a small‐scale problem represented by equivalent wind turbines with optimal numbers based on the principle of equal voltage differences. Finally, actual wind farm results validate that the proposed approach reduces the computation scale of the VVFB and improves the computation efficiency of the original model by approximately three times while ensuring accuracy.

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Evaluation Method for Equivalent Models of PMSG-Based Wind Farms Considering Randomness

Cited by 23 publications

References 25 publications

Impedance-Based Oscillatory Stability Analysis of High Power Electronics-Penetrated Power Systems—A Survey

Impedance-Based Oscillatory Stability Analysis of High Power Electronics-Penetrated Power Systems—A Survey

Solar, Wind and Their Hybridization Integration for Multi-Machine Power System Oscillation Controllers Optimization: A Review

Fast computation of voltage/VAR feasible boundaries of wind farms: An adaptive parameter aggregation dimensionality reduction equivalence method

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