Impedance Matching for VSC–HVDC and Energy Storage Damping Controllers

Tirtashi, Mohammad Reza Safari; Samuelsson, Olof; Svensson, Jörgen

doi:10.1109/tpwrd.2017.2719578

Cited by 10 publications

(9 citation statements)

References 2 publications

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“…As can be seen from Fig. 4, the conversion relationship of physical quantities in the two coordinate systems is (15) (15) can be linearized as ( 16)…”

Section: B Small-signal Model Of the Pllmentioning

confidence: 99%

“…This method uses equivalent sources to substitute for voltage source converter, in addition, there are no simulation of IGBTs or PWM trigger modular, so it is more appropriate for electromechanical transient modeling and simulation. The small-disturbance electromechanical dynamics of a power system can be translated to an equivalent circuit model with inductances and capacitance, so, in [15], it is shown that impedance matching can be used to select resistor value, and equivalently damping controller gain, that gives maximum damping ratio. The system stability for the HVDC voltage-source converters (VSCs) operating both as an inverter and a rectifier is well predicted from the Nyquist plot of impedance ratio in [16], but it doesn't consider the influence of the phase-locked loop in this method.…”

Section: Introductionmentioning

confidence: 99%

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General Small-Signal Modeling and Parameter Optimization of the Soft Normally-Open Point Connected to the Distribution Network

et al. 2021

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The soft normally-open point (SNOP) is a multi-terminal power electronic device installed between two or more feeders in the low and medium voltage distribution network, which can adjust the active power and reactive power between the feeders. A small-signal model of SNOP connected to the distribution network is established. The model includes the linearization equations of the AC system, voltage source converter, control system and internal DC system. State space is used to describe the small-signal model. The state matrix of SNOP is derived, which is not limited by the strength of AC system and the number of terminals. The objective function of control parameter optimization is established according to the characteristic roots of the state matrix. Taking a three-terminal system as an example, the characteristic roots of the state matrix are calculated and the stability of the system can be judged. The accuracy of the model is verified by the comparison of the electromagnetic transient model and the small-signal model, and the parameter optimization method is verified by the time domain simulation.

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“…As can be seen from Fig. 4, the conversion relationship of physical quantities in the two coordinate systems is (15) (15) can be linearized as ( 16)…”

Section: B Small-signal Model Of the Pllmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

General Small-Signal Modeling and Parameter Optimization of the Soft Normally-Open Point Connected to the Distribution Network

et al. 2021

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“…In 2017, M. R. Safari Tirtashi and O. Samuelsson [5], worked on the small-disturbance electromechanical dynamics of a power system that can be interpreted to a corresponding circuit model with capacitances and inductances. Proportionate to local frequency, active power damping control by means of a VSC-HVDC connected otherwise storage of energy subsequently symbolizes establishing a resistor in the circuit design.…”

Section: Literature Reviewmentioning

confidence: 99%

“…For example, weaken responses of the system determination of the consequence from the imbalances of power, therefore, reasoning frequency variations to be ahead of secure working restrictions. Extremely solid development, though, the development of appropriate methods was attained in the precedent concerning to facilitate the contribution of VSWT in the PFC [5]. Further lately, there an erstwhile investigation of active attempt on the incorporation of wind farms via the transmission of the VSC associations owing to the observed drawbacks that their interdependence might decrease the stability of frequency in the power system, this significant feature considered as the most important inspirations of this investigation of the study.…”

Section: Introductionmentioning

confidence: 99%

Deep Neural Network and Social Ski-Driver Optimization Algorithm for Power System Restoration with VSC - HVDC Technology

Ganesh¹

2020

JCMPS

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VSC-HVDC has to turn out to be a novel development for attaining a competent and consistent bulk power transmission. In the VSC-HVDC link, the main confronts is the "soft start-up" otherwise the power system restoration subsequent to the black-out system, against minimum response delay and over voltage. In this work, VSC-HVDC connection with Social Ski Driver algorithm--trained Deep Neural Network (DNN), called as DNN-Social ski-Driver (SSD) algorithm, and it is proposed to reinstate the power rapidly. The experimentation is done in the system by producing blackout during the development of a three-phase fault. The evaluation performance is done in the VSC-HVDC with DNN-SSD in the conventional PI controller. The experimentation outcomes endow with more rapidly independent and restoration control for the reactive and real powers. The proposed algorithm reduces the over voltage while comparing it with the conventional algorithms.

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“…Recently, the voltage source converter based high voltage direct current (VSC-HVDC) is widely used in dc transmission, renewable energy generation, island network supply and other fields [1][2][3][4]. In general control scheme of VSC-HVDC, the three-phase AC grid voltage is usually assumed to be balanced.…”

Section: Introductionmentioning

confidence: 99%

Active and Reactive Power Compensation Control Strategy for VSC-HVDC Systems under Unbalanced Grid Conditions

Liu

Zhai

et al. 2018

Energies

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This paper presents a power compensation strategy to suppress the double frequency power ripples of Voltage source converter high-voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions. The mathematical control equations of the double frequency ripple power of VSC under unbalanced operating conditions are firstly derived and established, where the dynamic behaviors of the double frequency ripples in active and reactive power are regarded as being driven by current-relevant components and voltage-relevant components, respectively. Based on the equations, a power compensation control strategy of VSC-HVDC is proposed via the passivity-based control with disturbance observer to suppress both the current-relevant and voltage-relevant components in the power ripples. With this control strategy, the double frequency ripples in active and reactive power are suppressed simultaneously and system performance is significantly enhanced with the implementation of the disturbance observer in the passivity-based control. Theoretical stability analysis and simulation cases show the effectiveness and superiority of the proposed strategy.

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Impedance Matching for VSC–HVDC and Energy Storage Damping Controllers

Cited by 10 publications

References 2 publications

General Small-Signal Modeling and Parameter Optimization of the Soft Normally-Open Point Connected to the Distribution Network

General Small-Signal Modeling and Parameter Optimization of the Soft Normally-Open Point Connected to the Distribution Network

Deep Neural Network and Social Ski-Driver Optimization Algorithm for Power System Restoration with VSC - HVDC Technology

Active and Reactive Power Compensation Control Strategy for VSC-HVDC Systems under Unbalanced Grid Conditions

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