Conference paper
Coordinated voltage control in offshore HVDC connected cluster of wind power plants
This paper presents a coordinated voltage control scheme (CVCS) for a cluster of offshore wind power plants connected to a voltage-source converter-based high-voltage direct current system. The primary control point of the proposed voltage control scheme is the introduced Pilot bus, which is having the highest short-circuit capacity in the offshore AC grid.
The developed CVCS comprehends an optimization algorithm, aiming for minimum active power losses in the offshore grid, to generate voltage reference to the Pilot bus. During the steady-state operation, the Pilot bus voltage is controlled by dispatching reactive power references to each wind turbine (WT) in the wind power plant cluster based on their available reactive power margin and network sensitivity-based participation factors, which are derived from the dV/dQ sensitivity of a WT bus w.r.t. the Pilot bus.
This method leads to the minimization of the risk of undesired effects, particularly overvoltage at the terminals of the WT located far away from the AC collector substation, by dispatching lower reactive power references compared with the ones nearer to the substation. In addition, this paper proposes a control strategy for improved voltage ride through capability of WTs for faults in the offshore grid, thus leading to improved dynamic voltage profile in the offshore AC grid.
Language: | English |
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Publisher: | IEEE |
Year: | 2018 |
Pages: | 1-1 |
Proceedings: | 2017 IEEE Power & Energy Society General Meeting |
ISBN: | 1538622114 , 1538622122 , 1538622130 , 9781538622117 , 9781538622124 and 9781538622131 |
ISSN: | 19449925 and 19449933 |
Types: | Conference paper |
DOI: | 10.1109/PESGM.2017.8274171 |
ORCIDs: | Altin, Müfit , Goksu, Omer and Cutululis, Nicolaos Antonio |
AC collector substation CVCS Dispatching HVDC transmission Pilot bus voltage Reactive power Substations Voltage control Wind energy Wind power generation control strategy coordinated voltage control scheme dV/dQ sensitivity dynamic voltage profile electric current control high-voltage direct current system minimum active power losses network sensitivity-based participation factors offshore AC grid offshore HVDC connected cluster offshore grid faults offshore installations offshore wind power plants power generation control power grids power system faults power system stability primary control point reactive power control reactive power margin short-circuit capacity steady-state operation substations voltage control voltage reference voltage ride voltage-source converter wind power plant cluster wind power plants wind turbine wind turbines