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Friday, 14 November 2014

STATCOM for Improved Dynamic Performance of Wind Farms in Power Grid

              STATCOM for Improved Dynamic Performance of Wind
Farms in Power Grid

ABSTRACT:

Application of FACTS controller called Static Synchronous Compensator STATCOM to improve the performance of power grid with Wind Farms is investigated .The essential feature of the STATCOM is that it has the ability to absorb or inject fastly the reactive power with power grid . Therefore the voltage regulation of the power grid with STATCOM FACTS device is achieved. Moreover restoring the stability of the power system having wind farm after occurring severe disturbance such as faults or wind farm mechanical power variation is obtained with STATCOM controller . The dynamic model of the power system having wind farm controlled by proposed STATCOM is developed . To Validate the powerful of the STATCOM FACTS controller , the studied power system is simulated and subjected to different severe disturbances . The results prove the effectiveness of the proposed STATCOM controller in terms of fast damping the power system oscillations and restoring the power system stability .

KEYWORDS:

1.      STATCOM
2.       Wind Generation
3.       Transient Stability

SOFTWARE: MATLAB/SIMULINK

BLOCK DIAGRAM:

Fig. 1 Studied model

 CONCLUSION:

Power system with wind farms performance can be improved using FACTS devices such as STATCOM . The dynamic model of the studied power system is simulated using Simulink Matlab package sofware . To validate the effect of the STATCOM controller of power system operation , the system is subjected to different disturbances such as faults and power operating conditions . The digital results prove the powerful of the proposed STATCOM controller in terms of Stability improvement, power swings damping, voltage regulation, increase of power transmission and chiefly as a supplier of controllable reactive power to accelerate voltage recovery after fault occurrence.

 REFERENCES:

 [1] V. Akhmatov, H.knudsen, A.H. Nielsen, J.K.pedersen, and N.K. poulsen, "A dynamic stability limit of grid connected induction generators", Pro. 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, no. 3, pp. 343-352, 2003.
[3] S.M. Bolik, "Grid requirments challenges for wind turbines", Fourth International Workshop on large-scale Integration of Wind Power and transmission networks for 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 farms", Wind Engineering Journal, vol. 27, no.2, pp.93-106, March2003.