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电力电缆耐压试验的意义和方法
发布日期:2021-04-11 来源:博宇电力 阅读:235

BIANPINCHUANLIANXIEZHENNAIYASHIYANYOUYUQIDUTEDEYOUSHIDEDAOLEGUANGFANDEYINGYONG,YOUYUXIANDAISHEHUIYIJICHENGSHIDEFAZHAN,DUIGAOYADIANLIDIANLANDEXUQIUBUDUANZENGZHANG,DAOZHILEWOGUODIANWANGGAIZAOGONGCHENGZENGDUO。GAOYADIANLANSHIDIANWANGGAIZAOYIJIDAXINGGONGDIANSHUNIUZHONGDEZHUYAOYINGYONGPINZHONG,QIJUYOUSHUSONGRONGLIANGDA、DIANXINGNENGHAO、WEIHUFANGBIANDENGYOUSHI。ZAIXIANRUJINDEGONGDIANQIYEZHONG,BIANPINCHUANLIANXIEZHENNAIYASHIYANSHIWEILAIDIANLIDIANLANNAIYASHIYANZHONGDEZHONGYAOFANGSHI,YOUCIKEJIANBIANPINCHUANLIANXIEZHENNAIYASHIYANJUYOUYIDINGDEXIANSHIYIYI。

一、电力电缆耐压试验的意义

DIANLIDIANLANZAISHIYONGGUOCHENGZHONGRONGYISHOUDAOGEZHONGYINSUDEYINGXIANG,DAOZHICHUXIANGUZHANG、DUANLUDENGWENTI,ZHEIXIEWENTIDOUYUJUEYUANBUFENQUESUNYOUYIDINGDEGUANXI,QIZHUYAOYOUXIASHUJIFANGMIANYINQIDE:

①ZHANGQIMANFUHEYUNXING。ZAIYIBANQINGKUANGXIA,DIANLANWENDUSHANGSHENG8℃,JUEYUANSHOUMINGJIUHUIXIAJIANG,RUOZHANGQICHUYUMANFUHEYUNXINGZHUANGTAI,JIUHUIDAOZHIZHANGQICHUYUGAOWENZHUANGTAI,DAOZHIJUEYUANSHIYONGSHOUMINGSUODUAN。

②WAILICHONGJI。ZHEIZHUYAOSHIDIANLANPUSHEGUOCHENGZHONGSHOUDAOSHIGONGJISHUDEYINGXIANG。

③SHOUCHAO。YOUYUYUSHUIJUYOUDAODIANZUOYONG,HUIDAOZHIJIEZHISUNHAOZENGDUO,JINERDAOZHIJUEYUANFARE,CUSHIJUEYUANSHOUMINGSUODUAN。

④JIECHUBULIANG。ZHEIZHUYAOSHIYOUYUDIANLANZHIZUOGONGYIJISHUSHUIPINGDI,JIETOUMEIYOUYASHI、JIAREBUCHONGFENDENGDAOZHIDEDIANLANJIETOUJUEYUANJIANGDI。

⑤FUSHIZUOYONG。FENGLIQINSHI、YUSHUIQINSHIYIJIDIXIADIANLANDESUANJIANFUSHIDOUHUIDAOZHIDIANLANJUEYUANJIANGDI。YINCI,JIANCEDIANLIDIANLANYOUWUGUZHANGHUOYICHANGCUNZAIJUYOUZHONGYAODEXIANSHIYIYI。NAIYASHIYANJIUSHIYIXUNZHAODIANLANCUNZAIDEGUZHANGWEIMUDEDEYIZHONGJIANYANFANGSHI。

二、目前电力电缆耐压试验的主要方法

1.超低频耐压试验

CHAODIPIN(0.1Hz)NAIYASHIYANFANGFAZUIZAOCHUXIANYU1980NIAN,QIZHUYAOSHIYONGYUGUANCHADIANLANYUNXINGSHIFOUCUNZAIJUEYUANQUESUNDEYIZHONGWUSUNSHIYANFANGFA,BINGQIEGAIFANGFAJINGGUODALIANGDEYANJIUSHISHIYANYIJIXIANCHANGSHIYAN,ZHONGSHIKONGGUZHENGSHICHAODIPINNAIYASHIYANZAIZHONGDIYADIANLIDIANLANNAIYASHIYANZHONGYOUJIAOHAODEYINGYONGXIAOGUO。GAIFANGFALIYONGDEYUANLISHIJIANG50HzJIAOLIUDIANTONGGUOZHENGLIUYULVBOZHUANBIANWEIZHILIUDIANYA,ZAIJINGYOUNIBIANDIANLU,JIANGZHILIUDIANYAZHUANBIANWEI1kHzJIAOLIUDIANYA,ZAITONGGUO0.1HzZHENGXIANZHENDANGQIWANCHENGDIAOFUCHULI,DANGJINGGUODIAOFUHOU,1kHzJIAOLIUDIANYADENGFUBOJIUHUIZHUANBIANWEI0.1HzBIANHUATIAOFUBO。QIZHUYAOSHIJIYUGAOYABIANYAQIYUDIANYABEIZENGDIANLUZHIJIANXINGCHENGDEGAODIANYA,QIZHUYAOBIAOXIANWEIZHENGXIANBO,BINGJINGYOUYAMINDIANZUQIJINXINGDIAOJIE,CONGERSHIGAOJIAOLIUDIANYAFUZAISHUCHUWEI0.1HzGAOYAZHENGXIANBOXING。

超低频耐压试验的优势主要在于:

①WUSUNHUAI;

②ZHUNQUEXINGGAO;

③SHEBEITIJIXIAO,YIYUXIEDAI。DANSHIGAIFANGFADESHUCHUDIANYADENGJIJIAODI,ZHUYAOHAISHIZAIZHONGDIYADIANLANNAIYASHIYANZHONGSHIYONG。

2.调感式工频串联谐振试验

GAIFANGFAZHUYAOSHILIYONGDIANKANGQIDEGANKANGZUOYONGYIJIBEICEDIANLANDIANRONGDERONGKANGZAI50HzGONGPINHUANJINGZHONGHUICHANSHENGXIEZHENDEGONGZUOYUANLI,CIGUOCHENGZHONGHUICHANSHENGGAODIANYA。

DIAOGANSHIGONGPINCHUANLIANXIEZHENSHIYANDEYOUSHIZAIYU:

①SHUCHUDIANLIUBOXINGJIBENWEIZHENGXIANBO;

②TEYIXINGGAO,ZHIYOUZAICHUANLIANXIEZHENHUILUMANZULECHANSHENGXIEZHENDETIAOJIANHOU,CAIHUIXINGCHENGGAODIANYA,ERBEICEDIANLANYIDANCHUXIANWENTI,JIUHUIZAOCHENGHUILUYICHANG,JIUXIANGDANGYUDIANLANDUANLU,GAODIANYAYEHUICHUXIANYIZHIXINGJIANGLUO,YOUYOUYUDIANKANGQINENGGOUXIANZHIDUANLUDIANLIU,CONGERBAOHUZHUANGZHIBUSHOUYINGXIANG,CONGERBUXUYAOJIAZHUANGDIANZUBAOHUZHUANGZHI。GAISHIYANFANGSHIDELIESHIZAIYUCAOZUOFUZA、XITONGPINZHIYINSHUBUGAO、ZIDONGHUASHUIPINGDI、ZAOYINDA,DAOZHIQIZAISHIJIZHONGDEYINGYONGSHOUDAOXIANZHI。

3.变频串联谐振试验

BIANPINCHUANLIANXIEZHENSHIYANYUANLIYUSHANGSHUDIAOGANSHIGONGPINCHUANLIANXIEZHENSHIYANYUANLIXIANGSI,WEIYIBUTONGZHICHUZAIYU:BIANPINCHUANLIANXIEZHENSHIYANSHITONGGUODIAOJIEBIANPINDIANYUANZHONGDESHUCHUDIANYAPINLVSHIXIANSHIYANHUILUCHANSHENGXIEZHEN;ERDIAOGANSHIGONGPINCHUANLIANXIEZHENSHIYANZESHITONGGUOJIYU50HzGONGPINXIADEDIAOJIEDIANKANGQICHANSHENGDEDIANGANLIANGSHIXIANSHIYANHUILUCHANSHENGXIEZHEN。

变频串联谐振试验的优点为:

DANGSHIYANSUOXUDIANYUANRONGLIANGDIYUBEICEDIANLANDEDIANYUANRONGLIANGSHI,NENGGOUZAIYUANDIYUSUOXUDIANYUANGONGLVDEQINGKUANGXIAJINXINGSHIYAN,NENGGOUYOUXIAOTIGAOXIANCHANGSHIYANDEXIAOLV,BINGQIENENGGOUKEFUDIAOGANSHIGONGPINNAIYASHIYANZHUANGZHIZHONGDEQUEDIAN,SHIQINENGGOUZAISHIJISHENGHUOZHONGDEDAOGENGJIAGUANGFANDEYINGYONG。CIWAI,BIANPINCHUANLIANXIEZHENSHIYANDEGONGZUOPINLVJINWEI30~300Hz,NENGGOUWANSHANCHAODIPINNAIYASHIYANDEPINLVGUODI、SUNHAOXIAODAOZHIYUSHIJISUNHAOLIANGBUFUDEWENTI。YINCI,ZHONGSHIKONGGUBIANPINCHUANLIANXIEZHENNAIYASHIYANSUODEJIEGUOWEIJINGMI、QUANMIANHEKEKAODE。

三、变频串联谐振耐压试验设计

BIANPINCHUANLIANXIEZHENNAIYASHIYANZHUYAOBAOKUOBIANPINDIANYUANZHUDIANLU、LICIBIANYAQI、XIEZHENDIANKANGQI、DIANRONGFENYAQI、BUCHANGDIANRONGQIDENGSHEBEI。GUOJIDADIANWANGHUIYIZUZHIJIANYIYI30~300HzWEISHIYANPINLVFANWEI,DANSHIYOUYUSHIJISHENGHUOZHONGCUNZAIYIXIEYINGXIANGYINSU,KEYI20~300HzWEISHIYANPINLVFANWEI。WOGUOEDINGGONGPINWEI50Hz,ZAIYUFANGXINGSHIYANDEGONGPINFANWEIWEI45~55Hz,ZHEIYANGZUODEMUDEWEILEMANZUDUIBEICEDIANLANJUEYUANXIAJIANGJINXINGSHISHIJIANCEDEXUQIU,YINCICAIXUANZEBIEDINGGONGPINFANWEIGENGDADEPINLV。SHIJISHIYANZHONGDEJIEJINGONGPINPINLVWEI35~75Hz,ZHEIZHUYAOSHIZAIDALIANGDESHIYANYUYANJIUZHONGFAXIANGONGPINPINLVZAI35~75HzSHI,JICHUANDIANYAKEXINDUWEI95%,YINCI,ZHONGSHIKONGGUZAIBIANPINCHUANLIANXIEZHENNAIYASHIYANZHONGJIANGJIEJINGONGPINXUANZE35~75HzWEIZUILIXIANGZHUANGTAI。