风力发电机组选型、布置及风电场发电量估算(切吉二期).docx

风力发电机组选型、布置及风电场发电量估算（切吉二期）7风电机组选型、布置及风电场发电量估算7风电机组选型、布置及风电场发电量估算7.1 风力发电机组选型在风电场的建设中，风力发电机组的选择受到风电场自然环境、交通运输、吊装等条件制约.在技术先进、运行可靠、满足国产化的前提下，应根据风电场风况特征和风电机姐的参数，计算:风电场的年发电量，选择综合指标最佳的风力发电机倒.7.1.1 建设条件切吉风电场二期工程场址海拔高度在3150三32如之间，属高海拔地区，空P#薄，多年平均空气密度为0.885kg/1，应选择适合高海拔地区的风机；读风电场场址地处柴达木盆地东北边修，地貌类型以山前便斜平原的戈壁漳为主，地形平坦，地势开网，便于风机安装；场址北距育JK公路（109国道）3.2k.,交通便利，范工条件较好，可通过简易道路运物大型设备.根据0622#窝风塔2006.11.l2008.10.31测风数据计算得到风电场场址80m高度风功率密度分布如图7.1所示.图中用羲色深浅表示风能指标高低，蕨色越深风能指标越好，嵌色越浅风能指标越差.由图7.1可见，读风电场场址地势开阿，地形平坦，风能指标基本一致。根据0622榻风塔风能资源计算结果，本风电场主风向和主风能方向基本一致,以西西北（IwD和西S）风的风速、风能最大和频次最高.80m高度风速演率主要集中在1.0三89.ObA,无破坏性风速，全年均可发电.80m高度年平均风速为6.54s,年平均风功率密度为309.OI/bS年有效风速（3.0ws20.（Ws）利用时数分别为6900h.用IASP9.0程序进行曲线拟合计算,得到0622#测风塔80.高度年平均风速为6.65s,平均风功率密度为319Ib,50m高度年平均风速为6.31bs,平均风功率密度为2751/2；30高度年平均风速为603s,平均风功率密度为236Im'Ioln高度年平均风速为5.27as,平均风功率密度为165f三,根据风电场风能资源讦估方法判定该风电场风功率密度等级接近3级.由茶卡，象站30年资料推算推算至风力发电机组轮毅69m、70«、80B高度50年一遇大风速分别为32.8138、32.8Ws、33.3三8(切变指数取0.10),均小于37.5三s5370m高度湍流强度值小于0.12,湍流强度较小.根据国际电工例会IEC61400-1(2005)标准判定该风电场可选用适合IECIIIc锻及其以上安全标准的风机.BH7.1切吉风电场二期80高度风功率密度分布图7.1.2 机型选择根据本风电场建设条件，该风电场场址海拔高度在3150三3260三之间，属高海拔地区，空气稀薄，存在电机维障和散热等问题.经调研国内适合高海拔地区的风机制造厂家，本次初选南车时代r88-1500kK金风科技Gf87-1500HT东汽FD93E-1500kI湖南湘电XE93-2000H和上汽!1106-2000kW风机进行了比较.机型特征叁数如下：叶片数，3片额定功率：1500kW、2000kl风轮直径I87105三切入风速：33.5bs切出风速：20ns-25as项定风速，11.5-13os安全风速：52.5s轮戴高度：6980m根据切吉风电场风能资源特点，按照东西间距9D（D为叶片直径）、南北间距5D的原则进行布置,按风机厂提供的当地空气密度0.885kgm'状况下功率曲钱，采用IASP9.0软件分别计算各风电机坦理论发电量和尾流影响后的发电量，并按综合折减系数26%计算年上网电公，叁照各风电机组的报价情况，对初选的6种机型分别进行了技术经济比较，结果见表7.1.«7.1初选机型经济比较表序项目单位-zt1.5te-WrTOO士*QP117Of7r?nnoDv11no*U11J1ACZ1M±r1.1171C1C1COAO11QZxQQQQQQQd0/1Or7fr7fUCononA11J-M-4XOOOf7nono1CCM壮士n氏myinCACiCCCAOAOUImaA4dTT1<o<nIyIlcZl1Afr7f1000*71onnnHZXr1.1771CfaTTnncoOCI70OCUUOOO,700/1OU1OO1tOatA1O111r71U10/10n11¾3太"Kk=QOQ1AfO(AQCQOICEQOQ1f71n-rV二(on41nonAonnoconoco11÷-11g&Ar7Q71OAOr7C11uc八1OM工宜r7OC:OlelOlOr7CC7OO1OZ工konoonnOOC:OlyIDQ1r7r71AMZt曲oon4dOO4COO/O011C-HBr1QdCO从表7.1可知，不同机型发电量差别相对较大，风电场年等效满负荷小时数从1716h到1843h不等.从表7.1中可知，方案5O1105-2000kW）单位电度静态投资较低，且市场占有率较高，因此本次设计以方案5ei06-2000H）为推荐方案，即以24台上汽I105-2000kI机型为设计依据.7.1.3 风力发电机姐的技术指标比较推荐方案主要技术弁数见表7.2,各比选风力发电机功率分数、推力系数参数见表7.3,各比选风力发电机功率曲线、推力系数曲线见图7.2图7.3.表7.2推荐方案风机的主要技术弁数表1.型Tffirl11痢1111C二/Qcnn1壮体古E/_、1CQjfi1.KjEBlAd“由DrPBl-trr1.KHg114-1.3*6frQTh宓涸*加陟西PnB沾O+71illKX。八砌50冏施1.jQR日B;古UC匚O*11三颁小宓CAolr山EhiX八八11珏猛拈田CQD,1QOD-AEAIQIQ功率因素0.95（感性）防护等级IP54g4/4R«7.3比选风力发电机功率曲线及推力系数曲线表（密度O.885kgm3）WT88-1500kWGW87-1500kWFD93E-1500kWXE93-2000kWW105-2000kW风速ms功率EkW推力系数风速ms功率EkW推力系数风速ms功率EkW推力系数风速ms功率EkW推力系数风速ms功率EkW推力系数3.5370.99033191.05563300325.14290.88490239.70.9664670.90384720.838543.5170.92493.546.57650.8085413.530.90.9174.51050.851480.84460.8485.0.73484.0.83360545482522803757651490.77262620.805424.5840.77744.5125.0820.7321754.5134.70.8155.52010.76374210.8053851270.74195170.7580.7324445193.30.77762640.763686330.805395.51810.74755.5227.5040.7324815.5264.20.7776.53390.764298980.762962450.75056300.510.732476351.30.7777574260.76461011760.684776.53220.75346.5382.4270.732626.5453.20.7777.55260.76511114570.6132374140.7567476.3050.7325347573.40.77786350.76351215000.428727.55200.75787.5585.2940.7325887.5711.60.7778.57540.73771315000.3227886440.75898710.1060.7323998876.30.77798830.70331415000.252738.57790.74748.5852.320.7325678.51054.10.7779.510150.67061515000.2032399200.7133910130.732614912490.7471011510.63871615000.166819.510710.68189.51176.510.7325949.51450.40.71310.512880.6071715000.139021012200.6465101367.270.7326011016450.68111420.5181500.110.1350.610.1570.7310.1780.6113.515440.29321315000.30681320100.4288331320000.311415440.260313.515000.27091420100.33037213.520000.27614.515440.23271415000.2411520100.2636021420000.2451515440.209314.515000.21581620100.21489714.520000.21815.515440.18911515000.19431720100.1783751520000.1961615440.171615.515000.17571820100.15027815.520000.179图7.3初选风力发电机推力系数曲线（密度0.885kg三,）本期工程总装机容量（MW）49.549.549.54848理论发电量（万142414151140701288712909kWh)9.8.6.8,7,1上网电量（万90638978.8956.8237.8844.kWh).75704年等效满负荷利用小时数（三）18311814180917161843容量系数0.2090.2070.2070.1960.210由表7.4可看出，推荐方案（上汽I105-2000kf）年上网电量为8844.4万Mrh,年等效清负荷小时数为1843h,容量系数为0.21推荐方案单机发电量计算表见表7.5.项目威布尔参数平均风速理论发电量扣除尾流影响发电量利用率折减功率曲线折减控制与湍流影响折减气候影响折减叶片污染折减损耗及场用电折减其它因素影响折减年利用小时数AK/5%6%4%3%1%5%2%/单位m/S/m/s万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h小时17.21.66.59536.3508.5483.1452.6432.3417.0411.9386.5376.3188227.21.66.59536.6502.8477.6447.5427.4412.3407.2382.1372.0186037.21.66.59537.4499.2474.3444.3424.3409.4404.4379.4369.4184747.21.66.6537.8496.1471.3441.6421.7406.8401.9377.1367.1183657.21.66.59536.3492.1467.5438.0418.3403.6398.63740364.2182167.21.66.59536.9491.6467.0437.5417.8403.1398.2373.6363.8181977.21.66.56532.7488.2463.8434.5415.0400.3395.5371.0361.3180687.21.66.56533.3494.0469.3439.7419.9405.1400.1375.4365.6182897.21.66.59535.9509.4483.9453.4433.0417.7412.6387.1376.91885107.21.66.61539.0503.0477.8447.6427.5412.4407.4382.2372.21861117.21.66.61539.O496.2471.4441.7421.8406.9402.0377.1367.21836127.31.66.6537.7490.6466.0436.6417.0402.3397.3372.8363.01815137.31.66.6537.9489.0464.5435.2415.6401.0396.1371.6361.81809147.31.66.62541.0491.4466.8437.3417.7402.9398.0373.5363.61818157.21.66.64542.8494.4469.7440.0420.2405.4400.4375.7365.81829167.21.66.61539.1494.1469.4439.7420.0405.2400.2375.5365.61828177.21.66.61538.6510.4484.9454.3433.9418.5413.4387.9377.71889187.21.66.61538.6503.5478.3448.1428.0412.9407.8382.7372.618635418O37O8306464264447150405266.19年剂用3s6耗球电鹿¾2A¾45.5.晋风6.217.5切吉风电场二期推荐方案（上汽1105-2000）80b高度单机发电量表续表7.5切吉二期风电场推荐方案（上汽1105-2000）80m高度单机发电量表量量折减减影响折减时数AK/5%6%4%3%1%5%2%/单位m/S/m/s万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h万kW.h小时227.31.66.6538.5498.1473.2443.3423.4408.4403.5378.6368.61843237.31.66.59537.0498.1473.2443.3423.4408.4403.5378.6368.61843247.1.6.62540504.479.449429.413.408.383.37318636.075.20986.57合计/平均7.21.66.612909.111951.911354.310637.210159.19800,69681.19083.58844.41843