Control interactions between the HVDC and UPFC by use of the RGA

Wang, X.F.; Li, Yang; Du, Wei; Wang, H.F.; Fan, Lingling

doi:10.1049/cp.2016.0472

Cited by 2 publications

(2 citation statements)

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“…The relative gain array (RGA) method identifies interactions between different control loops from the power system devices. This method is a general approach presented by Skogestad and Postlethwaite (2005), but has been suggested by X. F. Wang et al (2016) in the frequency domain for the interaction analysis in power systems. The RGA is defined by the ratio of an open-loop gain and a closed-loop gain depending on the inputs and outputs under study.…”

Section: Methods For Power-electronics-based Power Systemsmentioning

confidence: 99%

Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Cheah-Mañé

Egea‐Àlvarez

Prieto‐Araujo

et al. 2022

WIREs Energy & Environment

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The stability, operation, and control of power networks have been challenged due to the increased penetration of power electronic converters. New instability phenomena have appeared due to the interaction of the power converter controllers with other power network elements, including other power converters. Small-signal tools have been proved effective to identify and mitigate stability issues but their development is still ongoing. This article presents the state of the art on small-signal modeling and stability assessment of converterdominated networks. The modeling of converters and other power system components is reviewed, as well as the most common small-signal analysis techniques employed in conventional and modern power systems with power electronics. Two case studies are introduced to exemplify the modeling and stability analysis, employing some of the techniques presented in the article.

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Section: Methods For Power-electronics-based Power Systemsmentioning

confidence: 99%

Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Cheah-Mañé

Egea‐Àlvarez

Prieto‐Araujo

et al. 2022

WIREs Energy & Environment

View full text Add to dashboard Cite

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“…It has the advantages of simple calculation and can quantify the interaction between control loops. Consequently, it is widely applied in quantitative analysis of the coupling of UPFC, STATCOM, FACTS and HVDC [26,27].…”

Section: Rga Principlementioning

confidence: 99%

Coupling analysis on power‐frequency control loops for virtual synchronous generator based on relative gain array and Prony method

Jia

Yan

Qin

2023

IET Power Electronics

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With the improvement of the penetration of power electronic equipment, a challenging scenario is arising in power‐frequency control system design of virtual synchronous generator (VSG). This affects the stability and control performance of the multi‐VSG grid‐connected system due to the undesirable dynamic coupling of the power‐frequency control loops. From this perspective, this paper proposes a systematic procedure for accurately evaluating the coupling of power‐frequency control loop, which is based on the relative gain array (RGA) and Prony analysis method. Firstly, the output admittance model of multi‐VSG grid‐connected system is established, and the transfer function matrices of output power and angular frequency are derived, respectively. Then, the variation law of coupling between control loops of VSG with different parameters is investigated by two methods: One is numerical analysis, and the other is RGA method which can determine the frequency band of coupling. Besides, the interaction between different VSG control strategies is compared and analyzed based on RGA. Subsequently, Prony analysis method is proposed to verify the results of RGA analysis. Finally, simulation and experimental results in a two‐machine grid‐connected system are presented to support the theoretical analysis and demonstrate the feasibility of the proposed method.

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Control interactions between the HVDC and UPFC by use of the RGA

Cited by 2 publications

References 0 publications

Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Modeling and analysis approaches for small‐signal stability assessment of power‐electronic‐dominated systems

Coupling analysis on power‐frequency control loops for virtual synchronous generator based on relative gain array and Prony method

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