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Research on the Effect of Grid-Connected Wind Farms on Power System Stability and Improvement Measur

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Tutor: YinZhongDong
School: North China Electric Power University (Beijing)
Course: Power Electronics and Power Drives
Keywords: Wind power grid,Doubly fed induction wind turbines,Power system stability,System
CLC: TM315
Type: Master's thesis
Year:  2011
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The access of large-scale wind turbine is a major feature of modern power systems in industrialized countries . Wind power is currently the largest source of green energy generation , the highest efficiency compared with other energy basically no damage to the natural environment because of wind power . Wind power technology is an alternative to traditional energy more promising technology , but its impact on the operational stability of the grid or the current existence of important issues remain to be solved . This thesis discusses some of the problems of wind power grid following : First of all, the general discussion of some problems, such as the use of wind power grid centralized wind power than the single wind power more to improve grid stability ; wind power grid system ; problems generated by wind power the original system protection will grid technical requirements . Secondly , the modern wind farms use more VSCF wind turbine , doubly-fed induction wind turbine is the most widely used modern mainstream models . In this thesis, starting from the basic structure of the double-fed asynchronous machine analysis of the static and dynamic models . Finally PSCAD simulation further validation of its characteristics . Then discuss the doubly fed induction wind turbines connected to the grid with grid between static stability , dynamic stability and transient stability , as well as interested in the original system protection generated adversely affected . And validated through PSCAD simulation and numerical examples exist in the various stability problems . Finally, some measures should take measures to improve system stability and benefits FACTS FACTS improve wind power grid brought a series of questions from the line protection system and the original synchronous generator protection discussion .
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