星力7代捕鱼

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                        有功和无功功率的理解

                        交流电路星力7代捕鱼中,由电源供给负载的电功率有两种:一种是有功功率,一种是无功功率。电压电流同相位,电源向负载供电,负载把电能转换成其他能量,叫有功。电压电流不同相位部分,电源与负载之间交换电能,这部分(除线路损耗外)电能不转换(电磁以外的)成其他能量,叫无功。


                        有功功率


                        有功功率星力7代捕鱼是保持用电设备正常运行所需的电功率,也就是将电能转换为其他形式能量(机械能、光能、热能)的电功率。比如:5.5千瓦的电动机就是把5.5千瓦的电能转换为机械能,带动水泵抽水或脱粒机脱粒;各种照明设备将电能转换为光能,供人们生活和工作照明。有功功率的符号用P表示,单位有瓦(W)、千瓦(kW)、兆瓦(MW)。

                        星力7代捕鱼 YOUGONGGONGLV:ZAIJIAOLIUDIANLUZHONG,DIANYUANZAIYIGEZHOUQINEIFACHUSHUNSHIGONGLVDEPINGJUNZHI(HUOFUZAIDIANZUSUOXIAOHAODEGONGLV),CHENGWEI"YOUGONGGONGLV"。YOUGONGGONGLVGUODIDAOZHIXIANSUNZENGJIA、RONGLIANGXIAJIANG、SHEBEISHIYONGLVXIAJIANG,CONGERDAOZHIDIANNENGLANGFEIJIADA。


                        无功功率


                        电网中的感性负载(如电机,扼流圈,变压器,感应式加热器及电焊机等)都会产生不同程度的电滞,即所谓的电感。


                        GANXINGFUZAIJUYOUZHEIYANGYIZHONGTEXING -----JISHISUOJIADIANYAGAIBIANFANGXIANG,GANXINGFUZAIDEZHEIZHONGZHIHOURENGNENGJIANGDIANLIUDEFANGXIANG(RUZHENGXIANG)BAOCHIYIDUANSHIJIAN。YIDANCUNZAILEZHEIZHONGDIANLIUYUDIANYAZHIJIANDEXIANGWEICHA,JIUHUICHANSHENGFUGONGLV,BINGBEIFANKUIDAODIANWANGZHONG。DIANLIUDIANYAZAICIXIANGWEIXIANGTONGSHI,YOUXUYAOXIANGTONGDAXIAODEDIANNENGZAIGANXINGFUZAIZHONGJIANLICICHANG,ZHEIZHONGCICHANGFANXIANGDIANNENGJIUBEICHENGZUOWUGONGGONGLV。


                        DINGYI:ZAIJUYOUDIANGANHUODIANRONGDEDIANLUZHONG,ZAIMEIBANGEZHOUQINEI,BADIANYUANNENGLIANGBIANCHENGCICHANG(HUODIANCHANG)NENGLIANGZHUCUNQILAI,RANHOU,ZAISHIFANG,YOUBAZHUCUNDECICHANG(HUODIANCHANG)NENGLIANGZAIFANHUIJIDIANYUAN,ZHISHIJINXINGZHEIZHONGNENGLIANGDEJIAOHUAN,BINGMEIYOUZHENZHENGXIAOHAONENGLIANG,WOMENBAZHEIGEJIAOHUANDEGONGLVZHI,CHENGWEI" WUGONGGONGLV"。


                        无功功率比较抽象,它是用于电路内电场与磁场的交换,并用来在电气设备中建立和维持磁场的电功率。它不对外作功,而是转变为其他形式的能量。凡是有电磁线圈的电气设备,要建立磁场,就要消耗无功功率。比如40瓦的日光灯,除需40多瓦有功功率(镇流器也需消耗一部分有功功率)来发光外,还需80乏左右的无功功率供镇流器的线圈建立交变磁场用。由于它不对外做功,才被称之为“无功”。无功功率的符号用Q表示,单位为乏(Var)或千乏(kVar)。


                        星力7代捕鱼 WUGONGGONGLVGUOGAODEQUEDIAN:


                        1)WUGONGGONGLVHUIDAOZHIDIANLIUZENGDAHESHIZAIGONGLVZENGJIA,DAOZHIXITONGRONGLIANGXIAJIANG;


                        星力7代捕鱼 2)WUGONGGONGLVZENGJIA,HUISHIZONGDIANLIUZENGJIA,CONGERSHISHEBEIHEXIANLUDESUNHAOZENGJIA;


                        3)SHIXIANLUDEYAJIANGZENGDA,CHONGJIXINGWUGONGFUZAIHAIHUISHIDIANYAJULIEBODONG。


                        配电网中的电感性电气设备如变压器、电动机、电焊机星力7代捕鱼、空调器、洗衣机、电冰箱、钠灯、日光灯等投入运行后,不仅要从电力网中吸收有功功率用于做功,而且还要吸收无功功率建立磁场,这样就导致电力客户的自然功率因数一般都比较低。我国对电力客户的用电,规定了必须达到的功率因数标准。


                        星力7代捕鱼 WUGONGGONGLVJUEBUSHIWUYONGGONGLV,TADEYONGCHUHENDA。DIANDONGJIXUYAOJIANLIHEWEICHIXUANZHUANCICHANG,SHIZHUANZIZHUANDONG,CONGERDAIDONGJIXIEYUNDONG,DIANDONGJIDEZHUANZICICHANGJIUSHIKAOCONGDIANYUANQUDEWUGONGGONGLVJIANLIDE。BIANYAQIYETONGYANGXUYAOWUGONGGONGLV,CAINENGSHIBIANYAQIDEYICIXIANQUANCHANSHENGCICHANG,ZAIERCIXIANQUANGANYINGCHUDIANYA。YINCI,MEIYOUWUGONGGONGLV,DIANDONGJIJIUBUHUIZHUANDONG,BIANYAQIYEBUNENGBIANYA,JIAOLIUJIECHUQIBUHUIXIHE。WEILEXINGXIANGDISHUOMINGZHEIGEWENTI,XIANJUYIGELIZI:NONGCUNXIUSHUILIXUYAOKAIWATUFANGYUNTU,YUNTUSHIYONGZHUKUANGZHUANGMANTU,TIAOZOUDETUHAOBISHIYOUGONGGONGLV,TIAOKONGZHUKUANGJIUHAOBISHIWUGONGGONGLV,ZHUKUANGBINGBUSHIMEIYONG,MEIYOUZHUKUANGNITUZENMEYUNDAODISHANGNI?


                        ZAIZHENGCHANGQINGKUANGXIA,YONGDIANSHEBEIBUDANYAOCONGDIANYUANQUDEYOUGONGGONGLV,TONGSHIHAIXUYAOCONGDIANYUANQUDEWUGONGGONGLV。RUGUODIANWANGZHONGDEWUGONGGONGLVGONGBUYINGQIU,YONGDIANSHEBEIJIUMEIYOUZUGOUDEWUGONGGONGLVLAIJIANLIZHENGCHANGDEDIANCICHANG,NEIME,ZHEIXIEYONGDIANSHEBEIJIUBUNENGWEICHIZAIEDINGQINGKUANGXIAGONGZUO,YONGDIANSHEBEIDEDUANDIANYAJIUYAOXIAJIANG,CONGERYINGXIANGYONGDIANSHEBEIDEZHENGCHANGYUNXING。


                        WUGONGGONGLVDUIGONG、YONGDIANCHANSHENGYIDINGDEBUJIAYINGXIANG,ZHUYAOBIAOXIANZAI:


                        (1)JIANGDIFADIANJIYOUGONGGONGLVDESHUCHU。


                        (2)JIANGDISHU、BIANDIANSHEBEIDEGONGDIANNENGLI。


                        星力7代捕鱼 (3)ZAOCHENGXIANLUDIANYASUNSHIZENGDAHEDIANNENGSUNHAODEZENGJIA。


                        (4)ZAOCHENGDIGONGLVYINSHUYUNXINGHEDIANYAXIAJIANG,SHIDIANQISHEBEIRONGLIANGDEBUDAOCHONGFENFAHUI。


                        星力7代捕鱼 CONGFADIANJIHEGAOYASHUDIANXIANGONGJIDEWUGONGGONGLV,YUANYUANMANZUBULEFUHEDEXUYAO,SUOYIZAIDIANWANGZHONGYAOSHEZHIYIXIEWUGONGBUCHANGZHUANGZHILAIBUCHONGWUGONGGONGLV,YIBAOZHENGYONGHUDUIWUGONGGONGLVDEXUYAO,ZHEIYANGYONGDIANSHEBEICAINENGZAIEDINGDIANYAXIAGONGZUO。ZHEIJIUSHIDIANWANGXUYAOZHUANGSHEWUGONGBUCHANGZHUANGZHIDEDAOLI。

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