Frequency domain model of an HVDC link with a line-commutated current-source converter. Part II: varying overlap

Toledo, P.F. de; Ängquist, Lennart; Nee, Hans‐Peter

doi:10.1049/iet-gtd.2008.0588

Cited by 11 publications

(4 citation statements)

References 2 publications

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“…This matrix is obtained from (6) as . The transfer (Jacobian) matrix can be written as (12) The voltage stability is affected by both and . However, is usually kept constant and the stability is evaluated by incremental relationship between and as (13) where…”

Section: Voltage Stability and Steady-state Interactions Analysesmentioning

confidence: 99%

“…To deal with these issues, authors have proposed analytical models (eigenvalue-based and/or frequency-domain models) of LCC-HVDC systems [2], [8]- [12]. These models are usually used in local studies, where a small portion of power system including HVDC converter is modeled in detail and the rest of the power system is replaced by an equivalent simple circuit.…”

Section: Introductionmentioning

confidence: 99%

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Power System Stability Analysis Using Feedback Control System Modeling Including HVDC Transmission Links

Bidadfar

Nee

Zhang

et al. 2016

IEEE Trans. Power Syst.

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A general platform is introduced to study the dynamics of power systems with high voltage dc (HVDC) transmission links. Small-signal stability, voltage stability, and interaction phenomena of power systems with both line-commutated-converter HVDC (LCC-HVDC) and voltage-source-converter HVDC (VSC-HVDC) are addressed using the proposed platform. In this platform, the entire power system is modeled as a multivariable feedback control system (FCS) which consists of three interconnected blocks. The contents as well as the inputs and outputs of the blocks are selected such that the conventional analysis tools for power system stability are applicable, both in the time and frequency domains. In the FCS model, the relationships between different instabilities are clear, and participant agents of each instability can be determined. The model is developed in a modular and hybrid style, to make it feasible for a large power system. The proposed model is validated against an electromagnetic transient simulation program (PSCAD) using time responses.Index Terms-Dynamics, feedback control system, high-voltage dc (HVDC) systems, power system modeling.

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Section: Voltage Stability and Steady-state Interactions Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Power System Stability Analysis Using Feedback Control System Modeling Including HVDC Transmission Links

Bidadfar

Nee

Zhang

et al. 2016

IEEE Trans. Power Syst.

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“…Dynamic properties in both AC/DC of HVDC-link are presented on frequency-domain model. This model is used to control and stability analysis of overall power systems, that Part I describes fixed-commutation overlap method [16] and Part II explains the model upgraded by varying-overlap angle [17].…”

Section: Introductionmentioning

confidence: 99%

Transient response improvement of direct current using supplementary control based on ANFIS for rectifier in HVDC

Ginarsa

Muljono

Nrartha

et al. 2020

IJPEDS

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Current control scheme is commonly used in high voltage direct current (HVDC) to transmit power delivery. This scheme is done by adjusting trigger angle to regulate direct current (DC) in thyristor devices. The adaptive neuro-fuzzy inference system (ANFIS) control is widely applied for start and fault operation. But, solution for transient response of DC current in HVDC system is not clearly studied before. In this paper, supplementary control (SC) based on ANFIS is proposed to improve the transient response of the current. The SC control is designed by learning-processes and SC parameters are obtained by data-training automatically. For current reference at 1.05 pu and up-ramp at 20 pu/s, maximum overshoot is achieved at 5.12% and 7.72% for the SC and proportional integral controller (PIC), respectively. When the up-ramp is increased to 28 pu/s, the maximum overshoot is achieved at 10.01% for the SC. While, the peak overshoot for the PIC is 14.28%.

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“…Such linearized models are advantageous for controller design, analysis of interaction among the subsystems, subsynchronous torsional interaction phenomenon, etc. [25]. These small-signal models are typically valid only within a small range about an operating point for which they were established.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Average-Value Modeling of CIGRE HVDC Benchmark System

Atighechi

Chiniforoosh

Jatskevich

et al. 2014

IEEE Trans. Power Delivery

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High-voltage direct-current (HVDC) systems play an important role in modern energy grids, whereas efficient and accurate models are often needed for system-level studies. Due to the inherent switching in HVDC converters, the detailed switch-level models are computationally expensive for the simulation of large-signal transients and hard to linearize for small-signal frequency-domain characterization. In this paper, a dynamic average-value model (AVM) of the first CIGRE HVDC benchmark system is developed in a state-variable-based simulator, such as Matlab/Simulink, and nodal-analysis-based electromagnetic transient program (EMTP), such as PSCAD/EMTDC. The 12-pulse converters in the HVDC system are modeled with a set of nonlinear algebraic functions that are extracted numerically. The results from the average-value models are compared with the results of the detailed simulation to verify the accuracy of the AVMs in predicting the large-signal time-domain transients. The

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Frequency domain model of an HVDC link with a line-commutated current-source converter. Part II: varying overlap

Cited by 11 publications

References 2 publications

Power System Stability Analysis Using Feedback Control System Modeling Including HVDC Transmission Links

Power System Stability Analysis Using Feedback Control System Modeling Including HVDC Transmission Links

Transient response improvement of direct current using supplementary control based on ANFIS for rectifier in HVDC

Dynamic Average-Value Modeling of CIGRE HVDC Benchmark System

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