Voltage stability analysis of electric power system connected with distributed gennerators.
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tapchikhgkdt@hcmute.edu.vnKeywords:
DG, PUAbstract
It is very common today to find renewable energy resources connected to distribution systems. The impact of this DG on voltage distribution levels has been addressed in the literature. Distributed generation is electric power source sited close to electricity consumption places thus eliminating the unnecessary transmission and distribution costs. In addition, DG can reduce the use of fossil fuels, add versatility of source and reliability of power supply, reduce power losses and improve the distribution feeder voltage conditions. This paper presents a method to study the relationship between the active power and voltage (PU) at the Point of Common Coupling to identify the voltage stability limit. It is a foundation to build a permitted working operation region in complying with the voltage stability limit at the load bus. This method can be used in teaching to students at the Faculty of Electrical Engineering
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References
Trinh Trong Chuong, “Voltage stability analysis of grid connected wind generators,” International Conference on Electrical Engineering. Okinawa-Japan, 06-10 July 2008.
Martin Geidl, “Protection of Power Systems with Distributed Generation”: State of the Art, Power Systems Laboratory, Swiss Federal
Institute of Technology (ETH) Zurich, 20th July 2005.
M.H. Haque, “Determination of Steady-State Voltage Stability Limit Using P-Q Curve,” IEEE Power Engineering Review, April 2002.
Lã Văn Út, Phân tích và điều khiển ổn định hệ , Nhà xuất bản Khoa học kỹ thuật. Hà nội, 2000.
Milanovic, J.V., David, T.M., Stability of Distribution Networks with Embedded Generators and Induction Motors, PES Winter Meeting, IEEE, 2002. Vol. 2, pp.1023 -1028.
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