Stability of a Voltage Source Converter Subject to Decrease of Short-Circuit Capacity: A Case Study

Papangelis, Lampros; Debry, Marie-Sophie; Prevost, Thibault; Panciatici, Patrick; Cutsem, Thierry Van

doi:10.23919/pscc.2018.8442773

Cited by 24 publications

(32 citation statements)

References 13 publications

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“…Wind speed Decrease results in less stability [33] Decrease results in less stability [7] Grid strength Decrease results in less stability [34] Decrease results in less stability [7,24,[35][36][37][38]…”

Section: Dfig-ssr Ssci Operating Conditionsmentioning

confidence: 99%

Critical Review of Mitigation Solutions for SSO in Modern Transmission Grids

et al. 2020

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The replacement of conventional generation by power electronics-based generation changes the dynamic characteristics of the power system. This results in, among other things, the increased susceptibility to subsynchronous oscillations (SSO). First, this paper discusses three recently emerging SSO phenomena, which arise due to the interactions between (1) a doubly-fed induction generator and a series compensated transmission system; (2) a voltage source converter (VSC) and a weak grid; and (3) nearby VSCs. A fundamental review of these phenomena resulted in the requirement for a reclassification of the existing SSO phenomena. This reclassification is proposed in this work and is based on interacting components identified using participation factor analysis for the distinct phenomena. Second, a critical review of the existing mitigation measures is performed for these phenomena, highlighting the advantages and disadvantages of the solutions. The influence of the wind speed, grid strength, number of wind turbines, and several converter controller parameters are also discussed. To assist equipment manufacturers, control design engineers, and system operators in selecting and designing effective mitigation measures, the existing solutions are categorized in control solutions, hardware solutions, and solutions based on system level coordination. Finally, perspectives on open issues conclude this paper.

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Section: Dfig-ssr Ssci Operating Conditionsmentioning

confidence: 99%

Critical Review of Mitigation Solutions for SSO in Modern Transmission Grids

et al. 2020

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“…A linearization of the system of differentialalgebraic equations is performed. The control parameters used for model validation are tuned according to [5] and shown in Table I. For the stability analysis the equivalent grid impedance is equal to X eq = X w = 2 p.u..…”

Section: Small-signal Stability Analysis Of Vsc Connected To Weamentioning

confidence: 99%

“…These HVDC connections are based either on Line Commutated Converters (LCCs) or Voltage Source Converters (VSCs) [4]. However, VSCs have been gaining momentum, because of their flexibility and control capabilities [5]. Consequently, they are ideally suited to integrate the growing capacity of RES being installed.…”

Section: Introductionmentioning

confidence: 99%

“…In [12], the authors propose a grid synchronization mechanism by introducing an impedanceconditioning term in the Phase Locked Loop (PLL), to increase the range of stable power transfer of VSCs, which operate in weak grids. Furthermore, in [5], an investigation of the stability of VSC connected subject to low SCC is performed, where the impact of the various control parameters on system stability and maximum stable power transfer of VSC are studied. In the aforementioned work, VSCs operate in a gridfeeding mode, where the active and reactive power injected to the grid are kept constant.…”

Section: Introductionmentioning

confidence: 99%

“…The contribution of this paper is to provide a groundwork for understanding the nonlinear behavior of grid-supporting VSCs, connected to weak AC grids. The system model, used in this paper, is an extension of the one presented in [5]. Moreover, constraints on the magnitudes of VSC control gains are defined based on eigenvalue and H 2 norm analysis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Grid Supporting VSCs in Power Systems with Varying Inertia and Short-Circuit Capacity

Misyris

Mermet-Guyennet

Chatzivasileiadis

et al. 2019

2019 IEEE Milan PowerTech

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Voltage Source Converters (VSCs) can offer various control strategies to enable realization of the vision of a "Global Grid". With the increasing penetration of renewable energy sources, it is becoming more frequent for VSCs to be required to provide active and reactive power regulation. In this paper, a model of a grid-supporting VSC connected to a weak AC grid with low Short Circuit Capacity (SCC) and low inertia is presented. The impact of SCC and inertia is then illustrated by means of small-signal stability, H2 norm and large-disturbance analysis.

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An almost globally stable adaptive phase‐locked loop for synchronization of a voltage source converter to a weak grid

Zonetti,

Bobtsov,

Ortega

et al. 2023

Adv Control Appl

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In this article, we are interested in the problem of adaptive synchronization of a voltage source converter with a possibly weak grid with unknown angle and frequency. To guarantee a suitable synchronization with the angle of the three‐phase grid voltage we design an adaptive observer for such a signal requiring measurements only at the point of common coupling. Then we propose an alternative certainty‐equivalent, adaptive phase‐locked loop that ensures the angle estimation error goes to zero for almost all initial conditions. Although well‐known, for the sake of completeness, we also present a PI controller with feedforward action that ensures the converter currents converge to an arbitrary desired value. Relevance of the theoretical results and their robustness to variation of the grid parameters are thoroughly discussed and validated in the challenging scenario of a converter connected to a grid with low short‐circuit‐ratio.

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Stability of a Voltage Source Converter Subject to Decrease of Short-Circuit Capacity: A Case Study

Cited by 24 publications

References 13 publications

Critical Review of Mitigation Solutions for SSO in Modern Transmission Grids

Critical Review of Mitigation Solutions for SSO in Modern Transmission Grids

Grid Supporting VSCs in Power Systems with Varying Inertia and Short-Circuit Capacity

An almost globally stable adaptive phase‐locked loop for synchronization of a voltage source converter to a weak grid

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