Comparison of SVC and STATCOM Impacts on Wind Farm Stability Connected to Power System

Yıl 2010, Cilt: 2 Sayı: 2, 13 - 22, 01.06.2010

M. Sedighizadeh A. Rezazadeh M. Parayandeh

Öz

This paper considers the impacts of the Static Var Compensator (SVC) and Static Synchronous Compensator (STATCOM) on stability of the wind farms based on fixed speed induction generators (FSIG) which are connected to power system, after a severe disturbance occurrence. Because of asynchronous characteristic of fixed speed induction generators, the instability in wind farms based on FSIG is severally created by the extreme reactive power absorption by FISG after fault. This phenomenon is a result of rotor slip of FISG increase during the fault, and consequently, the consumption of reactive power is raised. The comparison is made between the performances of the wind farm equipped by SVC and STATCOM to improve the wind farm stability during and after fault. The simulation results show both of the devices can enhance the system stability during and after disturbance, especially when the network is weak. It is shown that the STATCOM have a much better performance as compared to SVC to improve wind farm stability, and provided better reactive power support to network

Anahtar Kelimeler

SVC, STATCOM, Stability, Wind Farm

Kaynakça

• [1] V. Akhmatov, H. Knudsen, A.H. Nielsen, J.K. Pedersen, and N.K. Poulsen, “A dynamic stability limit of gridconnected induction generators". Proc. International IASTED Conference on Power and Energy Systems, Marbella, Spain, ( 2000).
• [2] L. Holdsworth, X.G. Wu, J.B. Ekanayake, and N. Jenkins, "Comparison of fixed-speed and doubly-fed induction generator wind turbines during power system disturbances", IEE Proc. C- Gener. Transm. Distrib., Vol. 150,( 3 ), 2003, pp. 343-352
• [3] S. M. Bolik, "Grid Requirements Challenges for Wind Turbines", Fourth International Workshop on LargeScale Integration of Wind Power and Transmission networksfor Offshore Wind Farms, Oct. 2003.
• [4] L. Holdsworth, N. Jenkins, and G. Strbac, "Electrical stability of large, offshore wind farms", IEE Seventh International Conference on AC-DC Power Transmission, pp. 156-161, 2001.
• [5] X.G. Wu, A. Arulampalam, C. Zhan, and N. Jenkins, "Application of a Static Reactive Power Compensator (STATCOM) and a Dynamic Braking Resistor (DBR) for the stability enhancement of a large wind farm", Wind Engineering Journal, vol. 27, no. 2, pp. 93-106, March 2003.
• [6] Lie Xu Liangzhong Yao Sasse, C., "Comparison of Using SVC and STATCOM for Wind Farm Integration", International Conference on Power System Technology, 2006. Power Con 2006. Oct. 2006, page(s): 1-7