scholarly journals Voltage and reactive power optimisation of offshore wind farms based on terminal voltage control mode of DFIG

2017 ◽  
Vol 2017 (13) ◽  
pp. 874-879 ◽  
Author(s):  
Cuihua Tian ◽  
Xuanyao Luo ◽  
Jianpeng Dong ◽  
Baichao Chen ◽  
Jiaxin Yuan
Keyword(s):  
Reactive Power ◽  
Voltage Control ◽  
Wind Farms ◽  
Offshore Wind ◽  
Control Mode ◽  
Offshore Wind Farms ◽  
Terminal Voltage ◽  
Voltage Control Mode

scholarly journals Energisation Method for Offshore Wind Farms Connected to HVdc via Diode Rectifiers

2019 ◽  
Author(s):  
Oscar Saborío-Romano ◽  
Ali Bidadfar ◽  
Jayachandra Naidu Sakamuri ◽  
Ömer Göksu ◽  
Nicolaos Antonio Cutululis
Keyword(s):  
Reactive Power ◽  
Wind Farms ◽  
Power Delivery ◽  
Offshore Wind ◽  
Proof Of Concept ◽  
Offshore Wind Farms ◽  
Suitable Alternative ◽  
Active And Reactive Power ◽  
Auxiliary Power ◽  
Run Up

Diode rectifiers (DRs) have been recently suggested as a viable alternative for connecting offshore wind farms (OWFs) to HVdc, eliciting growing interest from both industry and academia. However, energisation of DR-connected OWFs is not straightforward. The present study constitutes a proof of concept of a novel energisation method for DR-connected OWFs, in which auxiliary power is provided from the shore through the HVdc link and the dc bus bar of one or more WTs. The proposed method provides an alternative with minimal additional hardware, which can be easily extended to more WTs in the OWF, increasing reliability by providing redundancy. The study includes coinciding auxiliary loads with active and reactive power components and a semi-aggregated OWF model, in which every WT is individually represented in the string containing the energising WT. Two additional sequences of simulation events are considered following the initial energisation sequence. Such sequences comprise wind power taking over the provision of the auxiliary power and the run-up to maximum (available) power production. The simulation results indicate that the proposed method is a suitable alternative for energising OWFs connected to HVdc via DRs.<br><br>The manuscript has been submitted to IEEE Transactions on Power Delivery.

scholarly journals Energisation Method for Offshore Wind Farms Connected to HVdc via Diode Rectifiers

2021 ◽  
Author(s):  
Oscar Saborío-Romano ◽  
Ali Bidadfar ◽  
Jayachandra Naidu Sakamuri ◽  
Ömer Göksu ◽  
Nicolaos Antonio Cutululis
Keyword(s):  
Reactive Power ◽  
Wind Farms ◽  
Offshore Wind ◽  
Proof Of Concept ◽  
Offshore Wind Farms ◽  
Suitable Alternative ◽  
Active And Reactive Power ◽  
Auxiliary Power ◽  
Additional Sequence ◽  
Additional Hardware

Diode rectifiers (DRs) have been recently suggested as a viable alternative for connecting offshore wind farms (OWFs) to HVdc, eliciting growing interest from both industry and academia. However, energisation of DR-connected OWFs is not straightforward. The present study constitutes a proof of concept of a novel energisation method for DR-connected OWFs, in which auxiliary power is provided from the shore through the HVdc link and the dc bus bar of one or more WTs. The proposed method provides an alternative with minimal additional hardware, which can be easily extended to more WTs in the OWF, increasing reliability by providing redundancy. The study includes coinciding auxiliary loads with active and reactive power components and a semi-aggregated OWF model, in which every WT is individually represented in the string containing the energising WT. An additional sequence of simulation events is considered following the initial energisation sequence. Such sequence comprises wind power taking over the provision of the auxiliary power. The simulation results indicate that the proposed method is a suitable alternative for energising OWFs connected to HVdc via DRs.<br><br>The manuscript has been submitted to the CIGRÉ Symposium 2021.

scholarly journals Power Oscillation Damping from OffshoreWind Farms Connected to HVDC via Diode Rectifiers

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3387 ◽  
Author(s):  
Saborío-Romano ◽  
Bidadfar ◽  
Göksu ◽  
Zeni ◽  
Cutululis
Keyword(s):  
Reactive Power ◽  
Wind Farms ◽  
Open Loop ◽  
Active Power ◽  
Offshore Wind ◽  
Voltage Source ◽  
Offshore Wind Farms ◽  
Power Oscillation ◽  
Power Oscillation Damping ◽  
Oscillation Damping

Diode rectifiers (DRs) have elicited increasing interest from both industry and academiaas a feasible alternative for connecting offshore wind farms (OWFs) to HVDC networks. However,before such technology is deployed, more studies are needed to assess the actual capabilities ofDR-connected OWFs to contribute to the secure operation of the networks linked to them. This studyassessed the capability of such an OWF to provide support to an onshore AC network by means of(active) power oscillation damping (POD). A semi-aggregated OWF representation was considered inorder to examine the dynamics of each grid-forming wind turbine (WT) within a string whenproviding POD, while achieving reasonable simulation times. Simulation results corroboratethat such an OWF can provide POD by means of OWF active power controls similar to thosedeveloped for OWFs connected to HVDC via voltage source converters, while its grid-forming WTsshare the reactive power consumption/production and keep the offshore voltage frequency andmagnitude within their normal operating ranges. Open-loop test results show that such capabilitycan, however, be restricted at operating points corresponding to the lowest and highest values ofactive power output.

Optimum voltage control for loss minimization in HVDC multi-terminal transmission systems for large offshore wind farms

2012 ◽  
Vol 89 ◽  
pp. 54-63 ◽  
Author(s):  
Mònica Aragüés-Peñalba ◽  
Agustí Egea-Àlvarez ◽  
Oriol Gomis-Bellmunt ◽  
Andreas Sumper
Keyword(s):  
Voltage Control ◽  
Wind Farms ◽  
Offshore Wind ◽  
Loss Minimization ◽  
Transmission Systems ◽  
Offshore Wind Farms

scholarly journals Enhanced Voltage Control of VSC-HVDC-Connected Offshore Wind Farms Based on Model Predictive Control

2018 ◽  
Vol 9 (1) ◽  
pp. 474-487 ◽  
Author(s):  
Yifei Guo ◽  
Houlei Gao ◽  
Qiuwei Wu ◽  
Haoran Zhao ◽  
Jacob Ostergaard ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Predictive Control ◽  
Voltage Control ◽  
Wind Farms ◽  
Offshore Wind ◽  
Offshore Wind Farms

scholarly journals Resource aware wind farm and D-STATCOM optimal sizing and placement in a distribution power system

2021 ◽  
Vol 11 (6) ◽  
pp. 4641
Author(s):  
Anzum Ansari ◽  
Shankarlingappa C. Byalihal
Keyword(s):  
Power System ◽  
Distribution System ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Offshore Wind ◽  
Optimal Placement ◽  
Offshore Wind Farms ◽  
Optimal Sizing ◽  
Multi Objective

<span lang="EN-US">Doubly fed induction generators (DFIG) based wind farms are capable of providing reactive power compensation. Compensation capability enhancement using reactors such as distributed static synchronous compensator (D-STATCOM) while connecting distribution generation (DG) systems to grid is imperative. This paper presents an optimal placement and sizing of offshore wind farms in a coastal distribution system that is emulated on an IEEE 33 bus system. A multi-objective formulation for optimal placement and sizing of the offshore wind farms with both the location and size constraints is developed. Teaching learning algorithm is used to optimize the multi-objective function constraining on the capacity and location of the offshore wind farms. The proposed formulation is a multi-objective problem for placement of the wind generator in the power system with dynamic wind supply to the power system. The random wind speed is generated as the input and the wind farm output generated to perform the optimal sizing and placement in the distributed system. MATLAB based simulation developed is found to be efficient and robust.</span>

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