Decentralized Control of Offshore Wind Farms Connected to Diode-Based HVdc Links

Cardiel-Alvarez, Miguel Angel; Arnaltes, Santiago; Rodriguez-Amenedo, José Luis; Nami, Ashkan

doi:10.1109/tec.2018.2804662

Cited by 56 publications

(40 citation statements)

References 17 publications

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“…• Reduction of volume (80%) and weight (66%) of the platform. However, several problems have to be solved before implementing a DRU-HVDC connection [132][133][134][135]:…”

Section: Diode Rectifier Unitmentioning

confidence: 99%

Offshore Wind Power Integration into Future Power Systems: Overview and Trends

Fernández‐Guillamón

Das

Cutululis

et al. 2019

JMSE

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Nowadays, wind is considered as a remarkable renewable energy source to be implemented in power systems. Most wind power plant experiences have been based on onshore installations, as they are considered as a mature technological solution by the electricity sector. However, future power scenarios and roadmaps promote offshore power plants as an alternative and additional power generation source, especially in some regions such as the North and Baltic seas. According to this framework, the present paper discusses and reviews trends and perspectives of offshore wind power plants for massive offshore wind power integration into future power systems. Different offshore trends, including turbine capacity, wind power plant capacity as well as water depth and distance from the shore, are discussed. In addition, electrical transmission high voltage alternating current (HVAC) and high voltage direct current (HVDC) solutions are described by considering the advantages and technical limitations of these alternatives. Several future advancements focused on increasing the offshore wind energy capacity currently under analysis are also included in the paper.

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“…• Reduction of volume (80%) and weight (66%) of the platform. However, several problems have to be solved before implementing a DRU-HVDC connection [132][133][134][135]:…”

Section: Diode Rectifier Unitmentioning

confidence: 99%

Offshore Wind Power Integration into Future Power Systems: Overview and Trends

Fernández‐Guillamón

Das

Cutululis

et al. 2019

JMSE

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“…The phase-plane analysis [32] can be performed to demonstrate the stability of the simplified second-order nonlinear system consisting of Equations (22) and (23). Clearly, the equilibrium point of the system is:…”

Section: Stability Analysis Of Q-f Controlmentioning

confidence: 99%

“…From Equations (22) and 23, it can be observed that there is a coupling relationship between the state variables φ and i wq , which determines the reactive power-frequency dynamic characteristics.…”

Section: Stability Analysis Of Q-f Controlmentioning

confidence: 99%

“…Actually, there is a substantial amount of capacitive compensation on the SEB of the LCC-HVDC or diode-based HVDC, leading to a strong coupling between the bus voltage and the active power balance, and also between the frequency and the reactive power balance [17,[20][21][22]. Consequently, references [17,[20][21][22] develop a novel control concept, where the frequency is regulated by the reactive power, whereas the voltage is regulated by the active power. There is another coordination approach developed in [18,19] where the voltage is controlled by both the WF and the LCR.…”

Section: Introductionmentioning

confidence: 99%

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Coordinated Control for Large-Scale Wind Farms with LCC-HVDC Integration

Geng

Yang

et al. 2018

Energies

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Wind farms (WFs) controlled with conventional vector control (VC) algorithms cannot be directly integrated to the power grid through line commutated rectifier (LCR)-based high voltage direct current (HVDC) transmission due to the lack of voltage support at its sending-end bus. This paper proposes a novel coordinated control scheme for WFs with LCC-HVDC integration. The scheme comprises two key sub-control loops, referred to as the reactive power-based frequency (Q-f) control loop and the active power-based voltage (P-V) control loop, respectively. The Q-f control, applied to the voltage sources inverters in the WFs, maintains the system frequency and compensates the reactive power for the LCR of HVDC, whereas the P-V control, applied to the LCR, maintains the sending-end bus voltage and achieves the active power balance of the system. Phase-plane analysis and small-signal analysis are performed to evaluate the stability of the system and facilitate the controller parameter design. Simulations performed on PSCAD/EMTDC verify the proposed control scheme.

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“…Ref. [14,15] also introduce distributed solutions using Q/f droop control for reactive power sharing among WTs. In these proposals, communication between WTs is not needed, and the second one avoids using any PLL.…”

Section: Introductionmentioning

confidence: 99%

Active Power Filtering Embedded in the Frequency Control of an Offshore Wind Farm Connected to a Diode-Rectifier-Based HVDC Link

et al. 2018

Self Cite

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This paper presents a novel active power filtering (APF) scheme embedded in a centralised frequency control of an offshore wind farm (OWF) connected to a high voltage direct current link through a diode rectifier station. The APF is carried out by a voltage source converter (VSC), which is connected to the rectifier station to provide frequency control for the offshore ac-grid. The proposed APF scheme eliminates harmonic currents at a capacitor bank placed at the rectifier station. This leads to a significant reduction in the total harmonic distortion of the offshore ac-grid voltage, and thus, to an improvement in the OWF power. Hence, the rectifier passive ac-filter bank is not needed anymore. A new selective harmonic compensation method based on the dynamic phasor (DP) theory is used in the proposed APF scheme which allows the extraction of the phasor form of harmonics in dc-signals. Therefore, the well-known proportional-integral regulators are used for the harmonic current compensation. Moreover, the offshore ac-grid is modelled for the system harmonic analysis using a grid solution based on the DP theory. Finally, a VSC power rating analysis is studied. The performance of the proposal is validated by simulations in both steady-state and transient conditions.

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Decentralized Control of Offshore Wind Farms Connected to Diode-Based HVdc Links

Cited by 56 publications

References 17 publications

Offshore Wind Power Integration into Future Power Systems: Overview and Trends

Offshore Wind Power Integration into Future Power Systems: Overview and Trends

Coordinated Control for Large-Scale Wind Farms with LCC-HVDC Integration

Active Power Filtering Embedded in the Frequency Control of an Offshore Wind Farm Connected to a Diode-Rectifier-Based HVDC Link

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