Investigation on Dynamic Response of Grid-Tied VSC During Electromechanical Oscillations of Power Systems

Wang, Bo; Cai, Guowei; Yang, Deyou; Wang, Lixin; Yu, Zhiye

doi:10.3390/en13010094

Cited by 3 publications

(4 citation statements)

References 28 publications

(38 reference statements)

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“…In [9], Bo Wang et al focus on the dynamic analysis of a grid-tied voltage source converter (GVSC) during electromechanical oscillations. A small-signal model and an input-output transfer function matrix are constructed to reveal the passive response of the GVSC on the basis of the power equation in the d-q coordinate system.…”

Section: Published Papers Highlightsmentioning

confidence: 99%

Modern Power System Dynamics, Stability and Control

Alexandridis¹

2020

Energies

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This Special Issue of Energies, “Modern Power System Dynamics, Stability and Control”, addresses the core problem of deploying novel aspects in the analysis of modern power systems as these are composed after the high penetration of distributed generation (DG) with different renewable energy sources (RES). The focus is given either on the new whole power and control system configuration or on individual cases of DG sources, power converters and other general or specific plants and devices. The problem can be tackled with different methodologies and may have several, more or less valuable and complicated solutions. The twenty-three accepted papers certainly offer a good contribution in a wide range of applications; they are extended from basic system theory perspectives, fundamental nonlinear analysis tools and novel modeling deployments to some interesting particular system and control issues.

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Section: Published Papers Highlightsmentioning

confidence: 99%

Modern Power System Dynamics, Stability and Control

Alexandridis¹

2020

Energies

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“…Since many types of converter-based installations have been recently introduced in power systems, it is important to note that all major ac/dc interface configurations, such as voltage source converters (VSCs) [25], or current source converters (CSCs) can be described by employing the IA formulation. The input and output of such a converter device, including any combination of passive circuit components connected to it, can be considered as a node, in accordance with the admittance model.…”

Section: Controlled Impedance-admittance (Cia) Modeling Of Power Grid...mentioning

confidence: 99%

“…. v dc (25) where now v T 1 = v dB1 v qB1 v dB2 v qB2 v dB3 v qB3 v dB4 v qB4 v dB5 v qB5 , and an input vector u T = u 1 . .…”

mentioning

confidence: 99%

Controlled Impedance-Admittance-Torque Nonlinear Modeling and Analysis of Modern Power Systems

Papageorgiou

Alexandridis

2020

Energies

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Modern power systems are continuously transformed into decentralized ones where distributed generation (DG) plays a key role. Almost all the different distributed energy resources (DERs) are connected in geographically dispersed places through controlled power electronic interfaces in a manner that essentially affects the dynamic performance and control of the whole power system. Simultaneously, rotating machines in power production or absorption, dominate the system response and stability. In this new frame, this paper proposes a novel generalized dynamic representation and full scale modeling of a modern power system based on the well-known impedance-admittance (IA) network model for the electricity grid, substantially extended to include in detail both the power converter devices by considering the controlled power electronic dynamics and the electrical machines by inserting their full electromechanical dynamics. This formulation results in a holistic nonlinear dynamic description, defined here as controlled impedance-admittance-torque (CIAT) model of the whole system which features common structural characteristics. The model is deployed in state space, involves all the controlled inputs in DG, namely the duty-ratio signals of each power converter interface, all the other external inputs affecting the system, namely all the known or unknown voltage, current, and torque inputs. As shown in the paper, the proposed CIAT model retains its fundamental properties for any DG and network topology, standard or varying. This enables the compression of the accurate analytic power system dynamic description into a matrix-based generic nonlinear model that can be easily used for analysis studies of such large-scale systems. Taking into account the nonlinear nature of the CIAT matrix-based model and the persistent action of the external inputs, Lyapunov methods deployed on recently established input to state stability (ISS) notions are systematically applied for the system analysis. Hence, the traditionally used small-signal model-based analysis that suffers from the intermittent and continuously changing operation of DERs is completely substituted by the proposed formulation. A modern power system example with different DERs involved is analyzed by this way and is extensively simulated to verify the validity of the proposed method.

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“…Finally, Wang et al [18] investigate on the dynamic response of a grid‐tied voltage source converter during electromechanical oscillations, using the adaptive local iterative filter decomposition presented by Yang et al [19] to identify oscillation parameters.…”

Section: Introductionmentioning

confidence: 99%

Real‐time identification of electromechanical oscillations through dynamic mode decomposition

Berizzi

Bosisio

Riccardo

et al. 2020

IET Generation, Transmission & Distribution

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Nowadays, traditional synchronous generators are replaced by distributed renewable energy sources (DRESs), which are connected to the grid via power converters. This shift towards non-synchronous generation leads to low inertia power systems and affects considerably the frequency control procedure. To provide an inertial response and to enhance grid stability, DRESs can be equipped with fast discharging energy storage systems, such as ultracapacitors. This feature allows distribution system operators (DSOs) to provide an inertial response as ancillary service to transmission system operators (TSOs) by coordinating the operation of many DRESs. For this purpose, DSOs should develop tools to quantify and control the provision of inertial response. Towards this objective, in this study, two new methodologies are proposed. The first one aims to evaluate the maximum aggregated inertial capability of active distribution networks (ADNs). The second one aims to dispatch DRESs to provide specific, TSO-defined, inertial response with the minimum cost. Both methods are tested on a medium voltage grid. Several cases are examined highlighting the impact of different parameters, such as converter limitations, line congestions, on the inertial capability of ADNs. Results indicate that the proposed methods can fully exploit operational limits of ADNs and maximise their inertial capability.

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Investigation on Dynamic Response of Grid-Tied VSC During Electromechanical Oscillations of Power Systems

Cited by 3 publications

References 28 publications

Modern Power System Dynamics, Stability and Control

Modern Power System Dynamics, Stability and Control

Controlled Impedance-Admittance-Torque Nonlinear Modeling and Analysis of Modern Power Systems

Real‐time identification of electromechanical oscillations through dynamic mode decomposition

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