8500kW风电场电气系统一次设计电气工程及其自动化专业
68页1、摘要风能作为一种情结能源而受到世界各国的重视,并加以开发和利用。通过技术开发,可以将风能转变为电能、热能、化学能等。其中,风能转化为电能是通过风力发电机将风能转化为电能,即风机桨叶在风力的带动下旋转,在大型风机中一般转速很低,正常情况下额定转速为20-30r/min,所以需要通过增速系统增速至1500r/min左右,再通过发电系统发出电能。在我国,风力发电总量逐渐增加,无论是在沿海地区还是内陆地区,在风能充足的地方,到处可见风力发电场,可见风电已经占据我国发电系统重要位置。本论文阐述对象为风力发电场,设计10台单容量为850KW的风力发电机,风机发出690v的电经过箱式变压器升压到35kv后送入110kv升压站,再由升压站引出一回线路将电送入电网。本论文通过对风力发电场的电气一次设计过程的阐述,详细说明了风电场电力一次系统的设计过程。包括风机选择,35kV升压变压器选择,110kV升压变压器选择,断路器、隔离开关选择以及110kV侧SF6高压封闭式组合电器(GIS)选择。在本设计过程中,参考了在本设计末所列出来的参考文献。限于本人水平能力,本设计难免有不足之处,所以真诚希望老师指正。A
2、bstract As a kind of clean energy, wind energy has been paid more and more attention by all countries in the world. With the development of technology, wind energy can be converted into electric energy, heat energy and chemical energy, etc. Among them, the conversion of wind energy into electricity is to convert wind energy into electrical energy by means of wind turbines, that is, the blade of the wind turbine is driven by the wind. in general, large fan speed is very low, under normal circumst
3、ances rated speed of 20-30r/min, so we need to speed up the growth rate of the system to about 1500r/min, and then Power generation by generating system. In China, the total wind power gradually increased, whether in coastal areas or inland areas, in places where wind power is abundant, wind farms can be seen everywhere, and it is obvious that wind power has occupied an important position in Chinas power generation system.This paper describes object is wind farms, Design the number of 10 unites
4、wind turbines with a single capacity of 850kW. After the fan sends out the 690V electric power through the box type transformer to boost to 35kV , into the 110kV booster station, Then the power is put into a power network by one return circuit which is led out by booster station. In this paper, through about the wind power plant electrical once system design process exposition, including the selection of fans, 35kV step-up transformer selection, 110kV step-up transformer selection, circuit break
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