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[cityname]电力变压器在智能电网接口中的应用

作者:电力变压器厂  发布日期:2019-04-08  

    

足球彩票  MUQIANDEXUDUOYANJIUZHILIYUWEIDIANLIXITONG******HUA、FUZAIFENPEI、CANSHUPEIZHIHEDIANNENGCHUCUNGUANLIZHIDINGCELVE。YOUYU***JINDUIYU“ZHINENGDIANWANG”HE“XUNIDIANCHANG”DEZHANWANG,YANJIUDEGUANZHUDIANDEXUANZETONGCHANGYIJUJINGJIGONGXIAO,SHOUDAOSHICHANGDETUIDONG。DANSHI,WOMENBUNENGWANGJI,RENHEGAOJIDEDIANLIXITONGYUNXINGJISHUBIXUYIWULISHANGWENDINGHEKEKAOYUNXINGDEDIANLIXITONGWEIJICHU。WEILEMANZUZHEIZHONGXINXINGDIANLIXITONGDEYAOQIU,DUIDIANWANGDEWULICENGMIANDEKONGZHIBIXUZHONGXINDIAOZHENGJIAYIGAIJIN。YUCITONGSHI,FENBUSHIDIANLIBIANYAQIJISHUHEGAOSHENTOUXINGDEKEZAISHENGDIANLIBIANYAQIJISHUDECHIXUFAZHANQUSHIYEYAOQIUDIANWANGKONGZHIJIEGOUTIXIJINXINGDIAOZHENG。XIANDAIDIANLIDIANZIJISHU,TONGGUOTIGONGYIGEGAOXIAODEZIDONGKONGZHIPINGTAIKEYIWEIDERsHERESsGOUJIANYIGEQIANGDADEDIANWANGLIANJIE,RUTU1SUOSHI。DENGJIAYUCHANGGUIDIANLIBIANYAQI,DIANWANGLIANJIEDIANLIBIANYAQIKEYIBIAOXIANWEIJIBENDEDIANWANGLIANJIEGONGNENG。ZHIYOUDANGDERsHERESsKEYICONGCHANGGUIDEDAXINGJIZHONGSHIDIANLIBIANYAQINEILIJIEGUANGUOWULIDIAOKONGRENWUSHI,TAMENCAINENGZAIDIANLIXITONGZHONGHUODEYUCHANGGUIDIANLIBIANYAQIPINGDENGDEDIWEI。ZHIYOUDANGDERsHERESsZAIDIANLIJIERUDIANWANGDEGUOCHENGZHONGBUZHIXIANGSHOUQUANLI,TONGSHIYENENGCHENGDANYIWUDESHIHOU,TAMENCAINENGDEDAOZHENZHENGDEZIYOU。WEILESHIDIANLIBIANYAQINENGGOUCANYUDAOHUOYUEDEDIANWANGKONGZHIZHONG,CHONGFENDEKONGZHICELVESHIBIXUDE。RANER,SHIZHIJINRI,KONGZHILINIANDEFAZHANHAISHIYUANYUANLUOHOUYUXUYAO。


TU1 DIANLIBIANYAQIZUOWEIECSsHEDIANWANGJIANDEROUXINGDUOGONGNENGJIBENLIANJIE

  
  1.电力变压器接入电网的要求

足球彩票  JINTIAN,DERsHERESsSUOSHIYONGDEDIANLIBIANYAQIRENGRANZHUYAOCAIYONGLEBEIDONGKONGZHIJISHU。ZHEIYIWEIZHEDUIDIANWANGJIERUGONGLVDEKONGZHIYUTONGGUOYICINENGYUANCHANSHENGDIANNENGDENENGLIANGZHUANHUANXITONGMIQIEXIANGGUAN。DUIDIANWANGCELAISHUO,TAMENXIANGDANGYUFUDEFUZAI。TAMENJIANGCONGECSCHUHUODEDEQUANBUGONGLVZHURUDIANWANG。ZAIZHEIZHONGFANGSHIXIA,DIANWANGCEDEDIANWANGKONGZHIZHENGHE,SHENZHIYUZHUDONGCANYUKONGZHIHEWENDINGDIANWANGZHUANGTAIBIANLIANGDOUSHIBUKENENGDE。

  ***JINDEDIANLIXITONGZHANGCHENGXIUDINGYEJINJINDUIYICHANGDEDIANWANGBIANHUAZUOCHULEYUFANGXINGDEFANYING。DUIGAOYAHEZHONGYADIANWANG,UCTECAOZUOSHOUCE、GUOJIADIANWANGBIANMAHEGUOJIADIANWANGLIANJIEZHANGCHENGDENG,DINGYILEDIANWANGDIANLIBIANYAQILIANJIEXINGWEI。DUIDIYAWANGLUO,GUICHENGXIJIEZHIJINHAIWEIDINGYIHECHUBAN。DUIYUGAOYAHEZHONGYAWANGLUO,WENTAIYAOQIUDINGYILEFADIANDANYUANBIXUJIANSHAOTAMENDEYOUGONGCHULIYIYINGDUIPINLVGUOGAO,HUOZHEANZHAODIANWANGDIAODUYAOQIUCHENGJIETIZHUANGCHULI。JUCI,CHAOGUOXUQIUDEYOUGONGGONGLVHUIBEIJUJUESHANGWANG。ZAIZHENGCHANGYUNXINGTIAOJIANXIA,FADIANDANYUANHAIBIXUTIGONGWUGONGGONGLV。DONGTAIXINGWEIDEDINGYIYAOQIUFADIANDANYUANBIXUZAIDIANWANGGUZHANGDEQINGKUANGXIABAOCHIYUDIANWANGDELIANJIEBINGNENGGOUTIGONGDUANLUDIANLIU。

  WEILEZENGJIADERsHERESsZAIDIANWANGZHONGDEBILI,GUIZHANGZHIDUHAIYINGGAIJINXINGGENGSHENRUDEBIANGE。FENBUSHIFADIANDANYUANBIXUYUJIZHONGSHIDIANLIBIANYAQICHENGDANTONGYANGDEJICHUDIAOKONGRENWU。ZHIYOUZHEIYANGDIANWANGCAINENGBEIJILIZHEYUNXINGZAIFENBUXINGSHIXIA。WEILAIDEDIANLIXITONGBUJINJINYAOQIUDERsHERESsCHENGDANJIADINGDEYUFANGXINGDECUOSHIHEKAIHUANKONGZHI。ZHEIXIEDIANLIBIANYAQIBIXUZHIXINGWULISHANGDESHIJIDEDIANLIXITONGDIAOKONG。ZHIYOUZHEIYANG,WEILAIJIZHONGSHIDIANLIBIANYAQICAINENGBEIDERsHERESsQUDAIHUOZHEBUCHONG。

  2.CHANGGUIDIANLIXITONGKONGZHIFANGFAZAIDIANLIBIANYAQIXITONGZHONGDECAIYONG

  XINDEDERsHERESsBIXUCANYUDAOXIANYOUDEXITONGZHONGBINGSHIYINGXIANYOUDEJIEGOUHEKONGZHICELVE。YINCIDIANLIBIANYAQIBIXUSHIYINGXIANYOUDEDIANWANGKONGZHIBINGQIEZUNCONGJIBENYUANZE,YOUQISHIZAIXIANGHULIANJIEDEYUNXINGZHONG。JIBENDEDIANLIBIANYAQIKONGZHIBIXUYICHUANTONGFADIANKONGZHIFANGSHIWEIJICHU,BINGhttp://sichuan.glambyanam.com/BEIFENLEIRUTU2SUOSHI。


图2 电力变压器连接到电网侧的馈电方式

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  DANGJIERUDIANWANGDEGOUJIANSHIDERsHUORESsSHI,CHANGGUIDEJICHUKONGZHIFANGSHIKEYIBEIDIANLIBIANYAQICAIYONGHEZHIXING。XIANGDIANWANGCHUANSHUDEGONGLVKEYIBEIECSHUODIANWANGQUDONG。ZAIECSQUDONGKUIDIANSHI,ECSJUEDINGLEXIANGDIANWANGCHUANSHUDEGONGLV。RUJIN,DANTAIRESsDIANLIBIANYAQIDIANXINGDIJIUZAIZHEIZHONGKUIDIANFANGSHIXIAYUNXING,BINGXIANGDIANWANGZHURUQUANBUKETIGONGDEGONGLV。ZAIDIANWANGQUDONGKUIDIANSHI,BUZAISHIECS,ERSHIDIANWANGJUEDINGGONGLVDECHUANSHU。DIANXINGDE,DADUOSHUCHANGGUIDAXINGDIANCHANGYUNXINGZAIZHEIZHONGFANGSHIXIA,TONGYANG,ZHEIZHONGFANGSHIQIANZAIDESHIHEDERsHERESsXITONG,HUOZHEZHISHAOSHIHESHIDIANLIXITONG。ZAIECSQUDONGKUIDIANDEQINGKUANGXIA,DIANLIBIANYAQIKONGZHIFANGSHIBEICHENGZUODIANWANGPINGXINGFANGSHI。DIERZHONGQINGKUANGKEYIBEILIANGZHONGBUTONGDEDIANLIBIANYAQIKONGZHIFANGSHISHIXIAN,FENBIESHIDIANWANGXINGCHENGFANGSHIHEDIANWANGZHICHIFANGSHI。DIANWANGXINGCHENGFANGSHIZHONGDIANLIBIANYAQIDEZUOYONGSHIJIANLIHEWEICHIDIANWANGZHUANGTAIBIANLIANG。DIANWANGZHICHIFANGSHIZHONGDIANLIBIANYAQIBEIYONGYUPINGHENGGONGLV。TAKEYICHUANSHUYUXIANSHEDINGSHULIANGDEGONGLV,ZHEIGESHULIANGKEYIGENJUDIANLIXITONGDEXUYAOHUOZHEGAOJIKONGZHIYUNXINGDEDAODECANKAOZHIJINXINGDIAOZHENG。YINGYONGZHEIGEKONGZHIFANGSHIDEDIANLIBIANYAQILIZIRUTU3ZHITU5DEZUOCESUOSHI。CIWAI,ZHEIXIEJIBENYOUGONGGONGLVDIAOKONGQIQIANZAIDEDUIERCIDIANWANGKONGZHIDEXIANGHULIANXIKEYIBEILEISIDECHANSHI。


TU3 ZHUDONGKONGZHIBINGYUDIANWANGLIANJIEDEDIANLIBIANYAQIDEDIANWANGXINGCHENG(GF)KONGZHIFANGSHI




足球彩票TU4 ZHUDONGKONGZHIBINGYUDIANWANGLIANJIEDEDIANLIBIANYAQIDEDIANWANGZHICHI(GS)KONGZHIFANGSHI




图5 被动控制电力变压器的电网平行(GP)控制方式

足球彩票  SUOYOUBEIJIESHAODEKONGZHIFANGSHIDOUKEYISHIYINGDUICHENGHEBUDUICHENGFUZAITIAOJIANHEDIANLIBIANYAQIYINGJIAN。DUIYUZHEIXIEJICHUDEKONGZHIFANGSHI,ZHENGRUQIANBIANJIESHAODE,ZHIYOUDIANWANGXINGCHENGFANGSHIHEDIANWANGZHICHIFANGSHICAISHIYONGYUBEIJIJIDIYINGYONGDAOWULICENGMIANDEKONGZHIZHENGGEDIANLIXITONG。FENBUSHIFADIANDANYUANZAIDIANWANGPINGXINGFANGSHIZHONGBUNENGBEICONGDIANWANGCEKONGZHI。RANER,CHULECHONGFENDEJICHUKONGZHIFANGSHI,FADIANDANYUANKONGZHIYIDINGYAONENGGOUYUDINGYIDECHAOCHANGGUIERCIDIANWANGDIAOKONGQIJINXINGJIAOHUZUOYONG。ZHEIGEYAOQIUTONGYANGNENGGOUBEISUOMIAOSHUDEJICHUKONGZHIFANGSHISUOSHIXIAN。YOUYUZHEIXIEKONGZHIJIEGOUSHIJIYUCHANGGUIDIANLIXITONGKONGZHICELVEDE,TAMENTIGONGLEYUCHANGGUIDIANLIXITONGKONGZHITONGYANGDEERCIDIAOKONGJIEKOU(RUTU5SUOSHI)。YINCI,JUBEIZHEIXIEGONGNENGDEDERsHERESsJIUKEYIXIANGCHANGGUIDANYUANYIYANGLIANJIEDAODIANWANGKONGZHIZHONG。DIANWANGZHONGDEERCIYOUGONGDIAOKONGQIBEIYAOQIUJIANGDIANWANGPINLVDIAOJIEDAOZHENGCHANGZHI。TAWEIDIANWANGXINGCHENGHEDIANWANGZHICHIDEKONGZHIJIEGOUTIGONGLEZAIGUANZHUDIANDEYOUGONGGONGLVPIANYIZHI。

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  3.FANGZHENYANJIU

  FANGZHENSHIYANZHENGTICHUDEKONGZHICELVEDEDIYIBU,KONGZHICELVECAIYONGCHANGGUIDEDIANLIXITONGKONGZHICELVE。CESHITIAOJIANSHI:LIANGGEXIANGHULIANJIEDEDIANWANG,MEIGEDIANWANGGEBAOHANYIGEDIANWANGXINGCHENGFANGSHIDEDIANLIBIANYAQIHEYIGEDIANWANGZHICHIFANGSHIDEDIANLIBIANYAQI,RUTU6SUOSHI。DIANWANGDEEDINGPINLVHEEDINGDIANYAFENBIESHIfrated=50Hz,VLL=400Vrms。

  DIANWANGXINGCHENGHEDIANWANGZHICHIFANGSHIDEDIANLIBIANYAQIEDINGSHIZAIGONGLVFENBIESHISr=125kVA,Sr=80kVA。LIANGZHONGDIANLIBIANYAQIDEYOUGONGGONGLVHEWUGONGGONGLVSHEDINGZHIDOUFENBIESHI6kWHE3.3kvar。FANGZHENSHIYONGDEDIANLANXINGHAOSHINAYY4×50SE,Rl=0.772Ω/km,Xl=0.083Ω/km。WEILEBIJIAOBUTONGDEDIANLIBIANYAQIFUZAIFENPEI,SUOYOUKONGZHIQIDEXIACHUIYINSHUCHUSHIZHISHEZHIXIANGTONG。ERCIKONGZHIQIBEIYONGLAIKONGZHIGONGLVJIAOHUANHENENGLIANGPINGHENG,TONGSHIWEICHIZHENGCHANGPINLV。

  如图6所示,有功和无功负载的初始条件两个电网设置相同,分别是16kW和7.3kvar。这使得全系统的功率额定值分别为32kW和14.6kvar。15s后,在电网1上加一个阶跃负载。有功功率增加20.2kW,无功功率增加到7.37kvar。仿真结果有功功率、无功功率、频率、三相电压、三相电流如图7至图10所示。


图6 两个微型电网,每一个包含一个电网形成方式电力变压器和一个电网支持方式电力变压器


  图7描述了电力变压器的有功功率。***初,每个电网形成方式的电力变压器都提供10kW功率,电网支持方式的电力变压器都提供6kW功率。于是,两个电网形成方式的电力变压器和两个电网支持方式的电力变压器平均分摊负载功率。15s时,4.2kW的负载阶跃功率被加到第一个电网上。随着负载改变,所有的电力变压器都马上做出了反应,功率的产生和消耗被重新分配。


图7 (a)电力变压器有功功率 (b)电力变压器无功功率

  
足球彩票  一段时间后,二次控制器控制电力变压器动作,第一个电网上的阶跃负载只由第一个电网上的电力变压器补偿。交换功率受到控制重新回到之前的设定值。不同电力变压器的无功功率如图7b所示。开始时,所有电力变压器提供的无功功率都近似为14.6kvar。15s的时候,第一个电网的无功功率增加了70var。正如前面提到的,本次仿真并没有对无功功率进行二次控制。电网形成方式的电力变压器补偿增加的阶跃负载,电网支持方式的电力变压器提供相同数量的无功功率。

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足球彩票  DIANLIXITONGDEPINLVRUTU8SUOSHI。YOUYUYICIHEERCIKONGZHIDOUYINGXIANGDIANWANGPINLV,DANSHIYINGXIANGSHIZAIBUTONGDESHIJIANCHIDU,KUAISUKONGZHIQIDEFANYINGRUFANGDACHUANGKOUSUOSHI。


TU8 DIANLIXITONGPINLV



图9 (a) t=15s时加入阶跃负载的GF1三相电压 (b) t=15s时加入阶跃负载的GF1三相电流

足球彩票  YOUYU15sJIARULEJIEYUEFUZAI,PINLVDEJIANGLUOYOUXIACHUIKONGZHIGONGNENGJUEDING。DANGYICIKONGZHIXUNSUWENDINGPINLVHOU,ERCIKONGZHIXIANGDUIHUANMANDEJIANGPINLVDIAOHUI50Hz。

足球彩票  DIYIGEDIANWANGXINGCHENGFANGSHIDEDIANLIBIANYAQIZAILIANJIEDIANCHUDEDIANYAHEDIANLIURUTU9SUOSHI。DIANLIBIANYAQIDIANYAJIHUBUSHOUGANRAO,YUCITONGSHI,ZHIYOUDIANLIUQUSHIYINGXIANGGUANFUZAIQINGKUANG。

  TU10YIDIYIGEDIANWANGFUZAIDESANXIANGDIANYAHESANXIANGDIANLIUWEILILAISHUOMINGFUZAIDIANYADIANLIUZHILIANGHEKONGZHIXINGNENG。15sSHI,FUZAIJIEYUEJIARUDIANWANG。FUZAIDIANYAJIHUBAOCHIBUBIAN,YUCITONGSHIDIANLIUSUIZHEJIEYUEFUZAIZENGJIA。


足球彩票TU10 (a) t=15sSHIJIARUJIEYUEFUZAIDEFUZAISANXIANGDIANYA (b) t=15sSHIJIARUJIEYUEFUZAIDEFUZAISANXIANGDIANLIU

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  4.SHIYANSHIXIAN

  YANZHENGQIANMIANJIESHAODEBIAOZHUNHUADIANLIBIANYAQIKONGZHIFANGSHIDEDIERBU,SHIZAICHONGFENDEYINGJIANPINGTAIJINXINGCESHI。SANZHONGFANGSHIDEKONGZHIJIEGOUZAIDUICHENGHEBUDUICHENGTIAOJIANXIADOUDEDAOLESHIXIAN。TU11ZHANSHILEGUDAOHUOXIANGHULIANJIEYUNXINGZHUANGTAIXIADEDIANLIBIANYAQIMOKUAIDEZHIXINGQINGKUANG。TU12ZHANSHILELEISIDEBUDUICHENGDIANWANGXINGCHENGFANGSHIDECESHIQINGKUANG。SHOUDAOBENWENDEJUXIANXING,JINYIBUDECESHIJIEGUOJIANGZAIHOUXUDELUNWENZHONGFABIAO。


图11 电力变压器模块平台和实验测试设备


TU12 BUDUICHENGDIANWANGXINGCHENGFANGSHIZHIXINGQINGKUANG:BUDUICHENGZUGANFUZAIJIEYUEXIACEDEDEXIANGDIANYAHEXIANGDIANLIU

  
足球彩票  目前电力系统仍然基于常规电厂高压运行的集中控制方式。随着被动控制的DERs和RESs的不断接入,可控电能的比率会逐渐减少。电力系统控制的激励变量的受限会危害系统的运行稳定性。为了在未来实现电力系统的可靠控制,DERs和RESs必须被授权可以积极参与电网状态变量频率和电压的调控。

足球彩票  XINDEDERsHERESsZAIXIANGXIDEJIBENYUNXINGYUANZEDEZHIDAOFANGZHENXIAZHENGZAIZHUBUJIARUDAOXIANYICUNZAIDEXITONGZHONG。WEILECANYUDAOZHEIGEKONGZHIXITONGZHONG,XIANYOUDECHANGGUIKONGZHICELVEBIXUZUOCHUDIAOZHENG。ZUOWEIDIANWANGLIANJIEDEDIANLIBIANYAQIDEKONGZHICELVEBIXUJIYUBIAOZHUNDECHANGGUIDIANCHANGKUIDIANFANGSHI。GENJUTUIJIANDECELVE,DERsHERESsKEYIHUOYUEDECANYUDAODIANLIXITONGDEWULIKONGZHIZHONG。FANGZHENYANJIUBIAOMING,DANGXIANGHULIANJIEDEWEIDIANWANGZHONG,ZHIYOUJIYUTUIJIANKONGZHIFANGSHIDEDIANLIBIANYAQISHI,DIANWANGRENGRANKEYIYUNXING。ZHEIZHONGKONGZHICELVEYIJINGZAISHIYANSHIDEDIANLIBIANYAQIZHUANGZHISHANGBEICHENGGONGDEYANZHENG。TUIJIANDEKONGZHICELVEBIAOZHUNDEYINGYONGZHISHIWEIDERSHERESsJIANLIYUCHANGGUIDIANLISHEBEIPINGDENGTIAOJIANHENENGYUANGONGYINGZAIWULICENGMIANHEJISHUCENGMIANZIYOUHUADEDIYIBU。

上一条: S11油浸式电力变压器的配电装置是如何进行工作的? 下一条: 电力变压器的试验操作

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