Conference paper
Coordinated Voltage Control of Offshore Wind Farms Combined with AC Grid based on OPF-MPC Method
Department of Electrical Engineering, Technical University of Denmark1
Center for Electric Power and Energy, Centers, Technical University of Denmark2
Electric Power Systems, Center for Electric Power and Energy, Centers, Technical University of Denmark3
Technical University of Denmark4
Hunan University5
This paper proposes a coordinated voltage control (CVC) scheme for the offshore wind farms (OWFs) with AC grid based on the optimal power flow (OPF) and model predictive control (MPC). In the proposed scheme, the AC grid and wind turbine generators (WTGs) are coordinated to keep voltages within the feasible range, reduce the active power losses and optimize reactive power distribution among the OWFs with AC grid.
In the upper layer, an OPF-based voltage control method is designed for AC grid, which can achieve the optimal power flow considering the active power outputs of OWFs, to minimize the voltage deviations of all buses. In the lower layer, a MPC-based voltage control method is designed for each OWF, which can optimize reactive power distribution among WTGs inside each OWF with the reactive power output references of each OWF from the upper layer.
The analytic sensitivity coefficient calculation method is applied to improve the computation efficiency. Two offshore wind farms with a modified IEEE 5 bus system were used to verify the proposed CVC scheme.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2020 |
| Pages: | 1-5 |
| Proceedings: | 2020 IEEE PES Asia-Pacific Power and Energy Engineering Conference |
| Series: | Asia-pacific Power and Energy Engineering Conference, Appeec |
| ISBN: | 172815748X , 172815748x , 1728157498 , 9781728157481 and 9781728157498 |
| ISSN: | 21574847 and 21574839 |
| Types: | Conference paper |
| DOI: | 10.1109/APPEEC48164.2020.9220446 |
| ORCIDs: | Wang, Pengda and Wu, Qiuwei |
Coordinated voltage control Model predictive control Optimal power flow Reactive power dispatch
AC grid Generators MPC-based voltage control method OPF-MPC method OPF-based voltage control method OWF Power transmission lines Propagation losses Reactive power Sensitivity Wind farms Wind turbines active power losses active power outputs coordinated voltage control coordinated voltage control scheme distributed power generation load flow model predictive control offshore installations offshore wind farms optimal power flow power generation control power generation faults power grids predictive control reactive power reactive power control reactive power dispatch reactive power distribution reactive power output references upper layer voltage control voltage deviations wind power plants wind turbine generators wind turbines
