Offshore Wind Integration to a Weak Grid by VSC-HVDC Links Using Power-Synchronization Control: A Case Study

Mitra, Pinaki; Zhang, Lidong; Harnefors, Lennart

doi:10.1109/tpwrd.2013.2273979

Cited by 139 publications

(77 citation statements)

References 19 publications

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“…Second problem is due to the PLL dynamics when the power converter is synchronized to a weak grid [11], [12]. Zhang et al [11], [13], [14] proposed an alternative technique referred to as Power Synchronization Control (PSC), which does not require synchronization with a Phase Locked Loop (PLL) via emulating the behavior of a synchronous machine. It is reported that PSC provides a good performance and fast dynamics for low SCR values.…”

mentioning

confidence: 99%

Advanced Vector Control for Voltage Source Converters Connected to Weak Grids

Egea‐Àlvarez

Fekriasl

Hassan

et al. 2015

IEEE Trans. Power Syst.

238

146

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This article addresses an advanced vector current control for a Voltage Source Converter (VSC) connected to a weak grid. The proposed control methodology permits high-performance regulation of the active power and the voltage for the feasible VSC range of operation. First, the steady state characteristics for a power converter connected to a very weak system with a Short Circuit Ratio (SCR) of 1 are discussed in order to identify the system limits. Then, the conventional vector control (inner loop) and the conventional power/voltage control (outer loop) stability and frequency responses are analysed. From the analysis of the classic structure, an enhanced outer loop based on a decoupled and gain-scheduling controller is presented and its stability is analysed. The proposed control is validated by means of dynamic simulations and it is compared with classic vector current control. Simulation results illustrate that the proposed control system could provide a promising approach to tackle the challenging problem of VSC in connection with weak AC grids.

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mentioning

confidence: 99%

Advanced Vector Control for Voltage Source Converters Connected to Weak Grids

Egea‐Àlvarez

Fekriasl

Hassan

et al. 2015

IEEE Trans. Power Syst.

238

146

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“…where most of the developing nations and grid isolated areas rely heavily on them because of their abundance [1,2]. In recent years, there has been a growing interest in wind energy power systems because of the environmental benefits and the economic benefits of fuel savings.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of ANFIS Based Controller on Variable Speed Isolated Wind-Diesel Hybrid System for Better Performance

Khan¹,

Pahwa²

2017

AJEEE

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In this paper, a transient study on Isolated Wind-Diesel Hybrid System (IWDHS) of 200 kW has been carried out in MATLAB/SIMULINK environment. The detailed model of synchronous generator coupled to diesel engine, self-excited induction generator and load is studied and considered for analyzing the dynamic behavior of IWDHS. It has been taken into consideration that most of the time; the energy is to be provided by wind turbine in comparison to diesel generator. Instead of a fixed wind speed, the IWDHS is being supplied by variable wind speeds. that are more than its nominal value (10 m/s). This function is accomplished by using a conventional PI controller which regulates the pitch angle of the wind turbine blades during incoming varying gusts of wind. Further the system performance is improved by implementing an ANFIS controller. A controller design process is identified; it consists of generating input-output data pairs to identify the control variables range and initial fuzzy memberships, and then to tune or adapt them using an ANFIS network structure. The control objective was to extract maximum power at varying wind speeds and to limit the power as well as improve settling time at rated value at high wind speeds. The simulations have shown how advantageous an ANFIS based controller is over a conventional PI controller.

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“…in microgrids and in integration of solar and offshore wind into the power transmission system [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Typically, a VSC-HVDC system is controlled via a nestedloop control, which in turn is built on standard vector control methods [5][6][7]. However, recent studies show that a complete decoupled vector control cannot be achieved using conventional methods, which affects the performance of the standard vector control method, particularly if a converter works beyond the PWM (pulse-width-modulation) saturation bound [8].…”

Section: Introductionmentioning

confidence: 99%

Neural-network based vector control of VSCHVDC transmission systems

Alonso

et al. 2015

2015 International Conference on Renewable Energy Research and Applications (ICRERA)

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent City Research OnlineAbstract-The application of high-voltage dc (HVDC) using voltage-source converters (VSC) has surged recently in electric power transmission and distribution systems. An optimal vector control of a VSC-HVDC system which uses an artificial neural network to implement an approximate dynamic programming algorithm and is trained with Levenberg-Marquardt is introduced in this paper. The proposed neural network vector control algorithm is analyzed in comparison with standard vector control methods for various HVDC control requirements, including dc voltage, active and reactive power control, and ac system voltage support. Assessment of the resulting closed-loop control shows that the neural network vector control approach has superior performance and works efficiently within and beyond the constraints of the HVDC system, for instance, converter rated power and saturation of PWM modulation.

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Offshore Wind Integration to a Weak Grid by VSC-HVDC Links Using Power-Synchronization Control: A Case Study

Cited by 139 publications

References 19 publications

Advanced Vector Control for Voltage Source Converters Connected to Weak Grids

Advanced Vector Control for Voltage Source Converters Connected to Weak Grids

Design and Implementation of ANFIS Based Controller on Variable Speed Isolated Wind-Diesel Hybrid System for Better Performance

Neural-network based vector control of VSCHVDC transmission systems

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