Development of wind farm models for power system stability and planing studies

Pao Yue-kong Library Electronic Theses Database

Development of wind farm models for power system stability and planing studies

 

Author: Li, Yang
Title: Development of wind farm models for power system stability and planing studies
Degree: M.Sc.
Year: 2010
Subject: Wind power plants.
Wind turbines -- Mathematical models.
Wind energy conversion systems -- Stability.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Electrical Engineering
Pages: xiv, 72 p. : ill. ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2463056
URI: http://theses.lib.polyu.edu.hk/handle/200/6459
Abstract: The greenhouse gas emission has been one of the most important environmental problems in the world. To reduce this emission, technology innovation for energy is the best solution. Among all the new energy, such as nuclear, natural gas, solar PV and so on, wind energy stands out by its security and applicability. During a hundred years of development, wind energy has stepped into its best time. Major countries in the world pay a lot of attention to it. Various preferential policies are established to encourage people and companies to be involved into this industry. The wind power market in Denmark has already been mature, and in USA it keeps developing but was hit by financial crisis, while in China, wind power industry is erupting. Though the development speed is very fast, there still exists several problems that limit the wind industry to become self-sufficient and sound. Before increasing the penetration level of wind power in power system, the impacts caused by grid-connected wind power must be studied first. Otherwise, the power quality and the system stability will be affected. What is worse, the system might collapse because of the integration of wind power. With the help of software, we are able to simulate different operation conditions so that the performance of grid-connected wind farm can be tested before any physical prototype is produced. The cost and time of design can be lowered. Therefore, a correct model for wind farm is valuable. To supply terminal users with high quality electricity power, the voltage and frequency must be stable. Besides, the harmonics should be as small as possible. To maintain the normal operation of a power system, the steady-state, transient and small signal stabilities should be taken into consideration. All of these consideration might be more or less different when the wind power is integrated in. All of them need to be revaluated to ensure the system will continue to work normally.

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