Stability Analysis of a Hybrid Multi-Infeed HVdc System Connected Between Two Offshore Wind Farms and Two Power Grids

Wang, Li; Yang, Zhihao; Lu, Xiu-Yu; Prokhorov, Anton V.

doi:10.1109/tia.2017.2672669

Cited by 40 publications

(6 citation statements)

References 26 publications

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“…A model of the western Danish power system was utilized for the test senario and results confirmed that, the application of SC at strategic locations, adequately damps power system oscillations and improves the frequency stability. Several research works [6], [7,8], have corroborated this findings and it has been applied in some HVDC projects [4,9], to improve grid strength. Despite the benefits that the SC offers, it may not be economically viable for scenarios with 100% RES.…”

Section: Introductionmentioning

confidence: 66%

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Stability analysis of a PMSG based Virtual Synchronous Machine

Baruwa

Fazeli

Egwebe

2020

Electric Power Systems Research

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This paper proposes a Virtual Synchronous Machine (VSM) strategy for Permanent Magnet Synchronous Generator based wind turbines which enables seamless operation in all operating modes. It guarantees Maximum Power Point Tracking in grid-connected operation, Load Following Power Generation in islanded operation and Low Voltage Ride Through capability during faults. To achieve optimal performance in all operating modes, the stability of the VSM is investigated in the event of small and large perturbations. The small-signal stability analysis of the VSM is conducted using a linearized state space model and the impact of the controllers on the dominant modes are derived using participation factor analysis. The transient stability and dynamic performance of the VSM are analyzed using a non-linear model. Based on this analysis, design guidelines and operational limits of the VSM are established. The results of this analysis are validated using time-domain simulations in MATLAB/SIMULINK.

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Section: Introductionmentioning

confidence: 66%

“…The synchronously-rotating-frame (SRF) PLL is implemented in this study [19]. The equations representing the PLL dynamics is given by (8):…”

Section: Power Synchronizationmentioning

confidence: 99%

Stability analysis of a PMSG based Virtual Synchronous Machine

Baruwa

Fazeli

Egwebe

2020

Electric Power Systems Research

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“…In [10], in order to suppress the subsynchronous control interaction caused by the converter control and the series capacitance in the series compensation transmission system with DFIG-based wind farm integration, a novel suppression strategy of DFIG based on active disturbance rejection control (ADRC) is proposed. In [11], aiming at the SSO problem of the multi-feed hybrid flexible DC transmission system with DFIG-based wind farm access, the damping controllers of two DC transmission lines are designed respectively via the pole assignment method based on the modal control theory. However, changes of operating conditions of wind farms make the oscillation frequency time-varying.…”

Section: Introductionmentioning

confidence: 99%

A Subsynchronous Oscillation Suppression Method Based on Self-Adaptive Auto Disturbance Rejection Proportional Integral Control of Voltage Source Converter Based Multi-Terminal Direct Current System with Doubly-Fed Induction Generator-Based Wind Farm Access

Su¹,

Dong²,

Liu³

et al. 2020

Energy Engineering

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A subsynchronous oscillation suppression strategy based on self-adaptive auto disturbance rejection proportional integral controller is proposed for doublyfed induction generator-based wind farm integrated into grid through voltage source converter based multi-terminal direct current. In this strategy, the nonlinear PI controller is constructed by fal function to replace the traditional linear PI controller, and then the tracking differentiator is used to arrange the appropriate transition process in combination with the idea of active disturbance rejection control, and the self-adaptive auto disturbance rejection proportional integral controller is designed. By applying the controller to the inner loop of the converter on the rotor side of the doubly-fed induction generator, the adaptability of the control parameters of the inner loop to the change of operating conditions of the system can be improved, and the dynamic performance of the system can be improved. The simulation results on PSCAD/EMTDC show that, compared with SSDC, when the wind speed is 7.5 m/s, 8.5 m/s and 9.5 m/s, the convergence time can be shortened by 0.2 s, 0.1 s and 0.25 s, respectively. When the number of grid-connected doubly-fed induction generator wind turbines is 200 and 220, the convergence time is shortened by 0.1s. When the self-adaptive auto disturbance rejection proportional integral controller and the multi-channel variable-parameter additional subsynchronous damping controller work together, the convergence time under the above three wind speeds are 2.7 s, 2.7 s and 2.3 s, respectively. When the number of grid-connected doubly-fed induction generator wind turbines is 200 and 220, the convergence time is 2.65 s and 2.75 s, respectively. It can be concluded that the self-adaptive auto disturbance rejection proportional integral controller can realize the effective suppression of the subsynchronous oscillation under different operating conditions of the wind farm via the comparison with the additional subsynchronous damping control of doubly-fed induction generator. Besides, subsynchronous oscillation will converge faster and the stability of the system can be enhanced when the self-adaptive auto disturbance rejection proportional integral controller and the multi-channel variable-parameter additional subsynchronous damping controller work together.

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“…Reference [5] proposed an efficient approach for commutation failure immunity level assessment based on the commutation failure immunity index in a hybrid multi-infeed HVDC system. Reference [6] presented the stability simulation results of two equivalent aggregated offshore wind farms based on a doubly-fed induction generator fed to two power grids through a hybrid multi-infeed HVDC system. Based on eigen-analysis, the impact of the Short-Circuit-Ratio (SCR) values of the LCC-HVDC and VSC-HVDC links, and the proximity between line-commutated converter (LCC) and VSC inverter stations on the dynamics of the hybrid multi-infeed HVDC system is investigated in reference [7], and then it is presented to systematically optimize the controller parameters for the hybrid multi-infeed HVDC system attached to a weak AC grid.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Li¹,

Li²,

Guo³

et al. 2020

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Based on the respective characteristics of line-commutated converter highvoltage direct current (LCC-HVDC) and voltage-source converter high voltage direct current (VSC-HVDC), two additional emergency DC power support (EDCPS) controllers are designed, respectively. In addition a coordinated control strategy based on a hybrid multi-infeed HVDC system for EDCPS is proposed. Considering the difference in system recovery between LCC-HVDC and VSC-HVDC in EDCPS, according to the magnitude of the amount of potential power loss, the LCC-HVDC and VSC-HVDC priority issues of boosting power for EDCPS are discussed in detail. Finally, a hybrid three-infeed HVDC that consists of two parallel LCC-HVDCs and one VSC-HVDC that is built in PSCAD/EMTDC are simulated. The effectiveness of the proposed approach is verified based on this hybrid three-infeed HVDC system.

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Stability Analysis of a Hybrid Multi-Infeed HVdc System Connected Between Two Offshore Wind Farms and Two Power Grids

Cited by 40 publications

References 26 publications

Stability analysis of a PMSG based Virtual Synchronous Machine

Stability analysis of a PMSG based Virtual Synchronous Machine

A Subsynchronous Oscillation Suppression Method Based on Self-Adaptive Auto Disturbance Rejection Proportional Integral Control of Voltage Source Converter Based Multi-Terminal Direct Current System with Doubly-Fed Induction Generator-Based Wind Farm Access

Archives of Electrical Engineering

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