风力发电场变配电工程电气设计.docx

毕业论文?本科毕业设计?风力发电场变配电工程电气设计?风力发电厂电气部分设计?摘要?javascript:;风力发电作为一种清洁的可再生能源发电方式,已越来越受到世界各国的欢迎，与此同时，风电场设计也备受重视。javascript:;虽然风电场电气设计与传统电厂设计的原理相同,但传统的设计方法并不一定适合风电场设计。所以有必要进行专门针对风电场电气主接线设计的研究。?javascript:;风电场的电气设计主要包含几个方面：风力发电机组升压方式、风电场集电线路选择、风机（风电机组）分组及连接方式。javascript:;现国内外风力发电机组出线电压多为690V，多采用升至35kV方案。风电场集电线路方案一般采用架空线或电缆敷设方式。javascript:;架空线的成本较低,但可靠性较低,电缆的成本高,可靠性也高；集电线路结构有4种常用方案，链形结构；单边环形结构；双边环形结构；复合环形结构。javascript:;链形结构简单，成本不高。环形设计成本较高，但其可靠性较高。风力发电机分组多为靠风机的排布位置、及结合现场施工的便捷性制定。?javascript:;本文主要针对风电场电气主接线进行设计和优化,通过对风机的分组和连接方式、风电场集电线路方案、风电javascript:;场短路电流计算及设备选取等的问题进行深入的计算与讨论，提出一些关于风机分组连接、集电线路设计的可行方案。javascript:;并通过现有风电场的数据，对方案进行技术和经济方面的比较，确定最终方案并对其进行优化。为今后的风电场设计提供一些经验和参考意见, 便于今后找出一套适用于风电场电气主接线设计的方法。?关键词：风电场,电气设计, 集电系统?ABSTRACT?By the wind power as one kind of clean renewable energy source the electricity generation way, the design of wind farm has been popular and been paid attention to with the world. Although the electrical design of wind farm and the traditional design technology at the electrical principle is the same, but sometimes the methods are not suitable in fact. So specifically for the electrical design of wind farm has come into being.?The electrical design of wind farm mainly includes several aspects: wind turbinewind farm collectorvoltage,line selection,wind(wind turbine)group and connection. Now the domestic and internationalwind turbineoutput voltageis 690V,the use ofup to35kV.. Wind farm electrical collector system generally uses the bus or cable. The cost of bus is relatively lower, but reliability is low, cable is high costs and high reliability; The electrical collector system has four common solutions, string clustering; Unilateral redundancy clustering; Bilateral redundancy clustering; Composite redundancy clustering. String clustering is simple structure, cost is not high. With redundancy design cost is higher, but it has high reliability. For more on WTGS group and combining lay on its location and the convenient of building. ?We will discuss about