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时间:2020-04-02
《风电场无功补偿问题的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第37卷第16期电力系统保护与控制Vol.37No.162009年8月16日PowerSystemProtectionandControlAug.16,2009风电场无功补偿问题的研究112223朱雪凌,张洋,高昆,李强,杜习周,刘同和(1.华北水利水电学院,河南郑州450011;2.河南电力试验研究院,河南郑州450052;3.濮阳供电公司,河南濮阳457000)摘要:研究了改善异步机风电场电压稳定性的措施。基于普通异步风机的恒速风电机组是目前应用较为广泛的风电机组,其发出有功功率的同时吸收无功功率,会导致接入风电地区电网的电压稳定性
2、降低。采用在风电场升压站加装静止无功补偿器(SVC)的方法,控制并网点的电压水平,重点研究在不同风速和负荷下,如何确定SVC的补偿量问题。文中对风电场节点的处理较准确地反映了其无功和电压特性。提出了将遗传算法与模拟退火法相结合的遗传模拟退火算法,采用模拟退火进行个体更新,以增加群体的多样性,避免陷入局部最优。以某实际含风电场的电力系统为例对所提算法的有效性进行测试,结果表明按照该算法确定的SVC补偿量进行风电场的无功补偿,可以明显提高风电场的电压稳定性。关键词:异步机风电场;电压稳定;无功补偿;静止无功补偿器(SVC);遗传模拟退火算法
3、(GSAA)Researchonthecompensationofreactivepowerforwindfarms112223ZHUXue-ling,ZHANGYang,GAOkun,LIQiang,DUXi-zhou,LIUTong-he(1.NorthChinaUniversityofConservancyandElectricPower,Zhengzhou450011,China;2.ElectricPowerResearchInstitute,Zhengzhou450052,China;3.PuyangPowerSupplyC
4、ompany,Puyang457000,China)Abstract:Themeasurestoenhancevoltagestabilityofinductiongeneratorbasedwindfarmarestudiedinthispaper.Windturbinesequippedwithinductiongeneratoriswidelyusedintheworldsofar.Thelocalgridvoltagestabilitywillbereducedduetotheintegrationofinductiongene
5、ratorbasedwindfarmbecausethehighdemandofreactivepowerisabsorbedbyinductiongenerator.AmethodthatassemblingSVCatthelow-pressuresideofwindfarmboosterstationstocontrolthevoltagelevelofparallelpointisproposedinthepaper.HowtodeterminetheSVCcapacityatdifferentwindspeedandloadle
6、velisresearched.Theprocessingofthewindfarmnodereflectsitscharacteraccurately.Anewkindofhybridgeneticalgorithm,whichiscomposedofsimplegeneticalgorithmandsimulatedannealingisproposed.Simulatedannealingmethodisusedtorenewindividualcharacter.Sothediversityofgroupisincreaseda
7、ndthelocaloptimumcanbeavoided.Anactualpowersystemareusedtotesttheeffectoftheproposedalgorithm.TestresultsshowthatusingthemethodproposedinthispapertodetermineSVCcapacitycanenhancevoltagestabilityofwindfarmobviously.ThisworkissupportedbyNaturalScienceAdvancedProjectProgram
8、sFundedbyEducationDepartmentofHenanProvince(No.2008B470003).Keywords:inductiongeneratorbasedwindfarm;vo
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