© The Institution of Engineering and Technology
Current technology developments allow the provision of voltage/reactive control of wind turbines. This study focuses on the impact of wind power voltage control on both the transmission network (TNet) and the wind energy harvesting network (HNet). Different possibilities of implementing the control representative of the current situation where wind farms maintain a fixed power factor and future situation where wind farms will provide a proportional voltage control are tested. In addition, optimal controls with a certain objective function such as minimising the HNet losses or optimising the reactive power delivered to the TNet are implemented for comparison purposes. The impact of each implementation of voltage control on the HNet is assessed by means of the value of grid losses, whereas the impact on TNet is measured by the PQ capability curve and the voltage value at the bus that connects the wind energy HNet with the TNet. In addition, the importance of the transformers taps in the control is evaluated and conclusions depending on the topology of the network are obtained thanks to the analysis of two actual Spanish networks.
References
-
-
1)
-
11. Smith, P., Cuffe, P., Grimes, S., Hearne, T.: ‘Ireland's approach for the connection of large amounts of renewable generation’. Power and Energy Society General Meeting, 2010, pp. 1–3.
-
2)
-
3)
-
4)
-
2. Ministerio de Industria, .
-
5)
-
3. Singh, S.N., Østergaard, J., Singh, B.: ‘Reactive power capability of unified DFIG for wind power generation’. Power and Energy Society General Meeting, 2010, pp. 1–7.
-
6)
-
10. Ochoa, L.F., Keane, A., Harrison, G.P.: ‘Minimizing the reactive support for distributed generation: enhanced passive operation and smart distribution networks’, IEEE Trans. Power Syst., 2011, 26, pp. 2134–2142 (doi: 10.1109/TPWRS.2011.2122346).
-
7)
-
5. Rabelo, B., Hofmann, W., Silva, J.L., Oliveira, R.G., Silva, S.R.: ‘Reactive power control in doubly-fed induction generators for wind turbines’. Power Electronics Specialists Conf., PESC, 2008, pp. 106–112.
-
8)
-
9)
-
10)
-
4. Engelhardt, S., Erlich, I., Feltes, C., Kretschmann, J., Shewarega, F.: ‘Reactive power capability of wind turbines based on doubly fed induction generators’, IEEE Trans. Energy Convers., 2011, 26, pp. 364–372 (doi: 10.1109/TEC.2010.2081365).
-
11)
-
1. Global Wind Energy Council, .
-
12)
-
13)
-
12. Cuffe, P., Smith, P., Keane, A.: ‘Transmission system impact of wind energy harvesting networks’, IEEE Trans. Sustain. Energy, 2012, 3, pp. 643–651 (doi: 10.1109/TSTE.2012.2199342).
-
14)
-
15)
-
6. Qiao, W., Harley, R.G.: ‘Improved control of DFIG wind turbines for operation with unbalanced network voltages’. Industry Applications Society Annual Meeting, IAS, 2008, pp. 1–7.
-
16)
-
14. Keane, A., Cuffe, P., Diskin, E., et al: ‘Evaluation of advanced operation and control of distributed wind farms to support efficiency and reliability’, IEEE Trans. Sustain. Energy, 2012, 3, pp. 735–742 (doi: 10.1109/TSTE.2012.2200000).
-
17)
-
18)
-
7. Arlaban, T., Peiró, J., Alonso, Ó., et al: ‘Experiences in simulating and testing coordinated voltage control provided by multiple wind power plants’. Proc. Tenth Int. Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Power Plants, 2011.
-
19)
-
13. Keane, A., Ochoa, L.F., Borges, C.L.T., et al: ‘State-of-the-art techniques and challenges ahead for distributed generation planning and optimization’, IEEE Trans. Power Syst., 2013, 28, pp. 1493–1502 (doi: 10.1109/TPWRS.2012.2214406).
-
20)
-
21)
-
10. Ochoa, L.F., Dent, C.J., Harrison, G.P.: ‘Distribution network capacity assessment: variable DG and active networks’, IEEE Trans. Power Syst., 2010, 25, (1), pp. 87–9 (doi: 10.1109/TPWRS.2009.2031223).
-
22)
-
A. Keane ,
L.F. Ochoa ,
E. Vittal ,
C.J. Dent ,
G.P. Harrison
.
Enhanced utilization of voltage control resources with distributed generation.
IEEE Trans. Power Syst.
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1 ,
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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-rpg.2013.0308
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