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電壓互感器消磁機重量輕方便攜帶


近年來(lai),我國電網側儲能發(fa)展迅猛。作為新(xin)一代電(dian)網設備,儲能就像一(yi)個超大容(rong)量的充電寶,在(zai)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)低(di)谷時當(dang)作用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)負荷(he)充滿電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li),在(zai)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)高峰時當(dang)作發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源釋放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li),有效填補(bu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)缺口,很大(da)限度(du)保(bao)障生(sheng)產生(sheng)活(huo)用(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。今年以來,為(wei)應對清潔能(neng)(neng)源的大(da)規模接入,蘇州供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)公司持續加強(qiang)科技更新,加快電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網(wang)(wang)各環(huan)節智能(neng)(neng)化升(sheng)級,穩健開(kai)展儲能(neng)(neng)技術研究與應用(yong)(yong),不斷(duan)提(ti)升(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網(wang)(wang)的能(neng)(neng)源配置能(neng)(neng)力(li)和(he)調節能(neng)(neng)力(li),提(ti)高電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網(wang)(wang)運行經濟(ji)性(xing)和(he)效能(neng)(neng)。除(chu)昆(kun)山(shan)儲能(neng)(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站外,當(dang)前,張家港(gang)樂余(yu)、常熟任(ren)陽兩(liang)座(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網(wang)(wang)側儲能(neng)(neng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)站也(ye)在(zai)如(ru)(ru)火如(ru)(ru)荼(tu)建設(she)中,未來將與昆(kun)山(shan)儲能(neng)(neng)站組成國內(nei)規模很大(da)的城市儲能群,總(zong)容量達242兆瓦時(shi),極大提(ti)升(sheng)風電、光伏(fu)等(deng)可再生清潔能源(yuan)消納能力和電網可靠(kao)靈活經(jing)濟運行(xing)水平。



一(yi)、剩磁的(de)危害(WBXC-1200電壓(ya)互感器消磁機(ji)重量(liang)輕方便攜(xie)帶

1.1 引發(fa)變壓器的(de)(de)繼電保(bao)護裝置(zhi)誤(wu)動,使變壓器的(de)(de)投運(yun)頻頻失敗;

1.2 變(bian)(bian)壓(ya)器出線短路故障切(qie)除時所產(chan)生(sheng)的電壓(ya)突增,誘發(fa)變(bian)(bian)壓(ya)器保護(hu)誤動,使變(bian)(bian)壓(ya)器各側負荷全(quan)部停(ting)電;

1.3 A電站(zhan)一臺變壓器空載接進電源產(chan)生的勵磁涌流,誘發(fa)鄰近其他B電站、C電站(zhan)等正在運行(xing)的變壓器(qi)產生“和應涌流”(sympathetic inrush)而(er)誤(wu)跳閘,造成大面積停電;

1.4 勵磁涌流會導(dao)致變壓器及斷路器因電動力過(guo)大受(shou)損;

1.5 誘(you)發操縱(zong)過電壓,損壞電氣設備;

1.6 勵磁(ci)涌流(liu)中的(de)直流(liu)分量(liang)導致(zhi)電(dian)流(liu)互感器(qi)磁(ci)路被過(guo)度磁(ci)化而大(da)幅降低(di)丈量(liang)精度和繼電(dian)保護裝置的(de)正確(que)動作率;

1.7 勵磁涌(yong)流中的大量(liang)諧波(bo)對電網(wang)電能質量(liang)造(zao)成嚴(yan)重的污染;

1.8 造(zao)成(cheng)電網電壓驟升或(huo)驟降,影響(xiang)其他電氣設備正常工作(zuo)。

二、主要性能(neng)特(te)點(WBXC-1200電壓互感(gan)器(qi)消(xiao)磁機重(zhong)量輕方(fang)便攜帶

采用(yong)的(de)技術-直流變(bian)頻(pin)衰減原理(li);

三相變壓器(qi)只對B相消磁(ci)就能達到消磁(ci)的目的;

具有自動穩流判斷、16位(wei)AD數據采集處理功能(neng);

具有(you)手動/自動消磁模式(shi),共5種(zhong)消磁(ci)模式;

消磁速度快-單次由30min提高到不大于3min

消磁效(xiao)果明顯-單次由80%提高到90%以(yi)上;

可(ke)直接利(li)用(yong)直流電(dian)(dian)阻(zu)測(ce)試的電(dian)(dian)流線,方便與直流電(dian)(dian)阻(zu)測(ce)試配套;

采用(yong)中文(wen)界面,界面清(qing)晰(xi),實時顯(xian)示消磁進度(du);

適用(yong)于35kV及以上大型電力變壓器及互感器投運前消除剩磁;尤其是針對330kV及以上電壓等(deng)級的大容量(liang)變壓器;

10) 該產品體積小,重量輕,非常適用于現場。

三、主要技術指標(WBXC-1200電壓(ya)互感器(qi)消(xiao)磁(ci)機重量輕方便(bian)攜帶

1、消磁電流:5A1A200mA5mA可定制

2、消(xiao)磁方式:手動、自(zi)動

3、消(xiao)磁時間:手動 3min/     自(zi)動9min/

4、消磁(ci)效果:大于(yu)90%/  

5、消磁進度(du):0100%

6、工(gong)作電源:AC 220V±10%

7、電源頻率:50Hz±1Hz

8、環(huan)境(jing)溫度(du):-25℃~50

9、環(huan)境濕度(du):≤90%

10、重    量:5kg(不含測(ce)試線)

四、面板功能介紹(shao)(WBXC-1200電壓互感(gan)器消磁機(ji)重量輕方便攜帶

⑴ 消磁(ci)輸出:接(jie)被消磁(ci)的變壓器(qi)或互感(gan)器(qi)套管。

⑵ 液 晶 屏(ping):顯示消磁狀(zhuang)態和進(jin)度

⑶ 電源(yuan)開關:AC 220V電源開(kai)關

⑷ 復    位(wei):中斷儀器工作/選(xuan)擇消磁電流

⑸ 啟(qi)    動:啟動消磁輸出

⑹ 接(jie)地(di)端子(zi):與地(di)線(xian)連(lian)接(jie)

⑺ 交流220V:接市(shi)電AC 220V電源插座

五、使用說明(WBXC-1200電壓互感(gan)器消磁機重量輕(qing)方便(bian)攜帶

用標準電源(yuan)線把儀(yi)器與外部AC220V電源連接(jie)(jie),用接(jie)(jie)地(di)線將接(jie)(jie)地(di)端(duan)(duan)子(zi)與大地(di)連接(jie)(jie),消(xiao)磁輸出端(duan)(duan)子(zi)接(jie)(jie)變壓器高(gao)壓側線圈的兩端(duan)(duan),消(xiao)磁輸出不分正(zheng)負。如果是單相變壓器接(jie)(jie)AX,如圖1所示;如果(guo)是三相變壓器(qi)只接(jie)B0,如(ru)圖2所示。

1、接(jie)好測試線后,打(da)開電源開關(guan),液(ye)晶顯示:

2、系(xi)統進(jin)入(ru)“自動/手動模(mo)式”選擇菜單液晶(jing)顯示(shi):

3、按“復位”鍵,循環選擇(ze)“自(zi)動模(mo)式”或(huo)者“手動模(mo)式”,閃(shan)爍的字幕表示當前選擇的模式,再按“啟動”鍵,表示確定了之前的選擇。



A、若*初選擇的是手動(dong)模(mo)式,按(an)“啟動(dong)”鍵(jian),系統進入(ru)“手動(dong)模(mo)式電流選擇”菜(cai)單,液晶(jing)顯示:

按“復位”鍵,循環選擇5A1A200mA5mA,閃爍(shuo)的字幕表示當前選擇的電(dian)流(liu)檔,再按(an)“啟動(dong)”鍵(jian),表示確定了(le)之前的選擇,并開始消(xiao)磁。儀器手動(dong)消(xiao)磁一共(gong)有(you)4種(zhong),分別(bie)為:5A標準消磁、1A標準消磁、200mA標準(zhun)消磁、5mA標準消磁

液晶顯(xian)示(其他3種組合省略):

B、若*初(chu)選擇(ze)的是自(zi)動(dong)模(mo)式,上一步操作結束(shu)后再按“啟動(dong)”鍵(jian),開始自(zi)動(dong)消磁過程,系統自(zi)動(dong)按照5A1A200mA5mA的順序進行消磁。

液(ye)晶顯示(其他三種消磁(ci)過程省略)

AB操作(zuo)(手動(dong)和自(zi)動(dong)模式的消磁過(guo)程(cheng))結束后,等進度達到100%后,液晶顯示:

4、至此消磁(ci)結束,系(xi)統(tong)自動放電,液(ye)晶(jing)顯示:

5、放電結(jie)束(shu)后進入“自動/手動模式”選擇(ze)菜單,重(zhong)復以(yi)上操作即可。


不僅電(dian)網側(ce),用戶側(ce)也在逐漸成為參與電(dian)網調節(jie)的生(sheng)力軍。日前(qian),國家重點研發計劃(hua)城區用戶與電網供需友好(hao)互動(dong)系(xi)統順利(li)完成項(xiang)目綜合績效評價,作為(wei)重點示范(fan)區域的蘇(su)州(zhou)環金(jin)雞湖地(di)區,11.2萬戶(hu)居民用戶(hu)、168戶工商業用戶,已(yi)經(jing)從(cong)電力的使用者(zhe)變成了電網的參(can)與者,通過國(guo)內率先試點實施積分型準現貨市場的供需互動機制,引導用戶主動參與需求響應,實現該(gai)區域(yu)負荷(he)峰谷差下(xia)降6.04%,居民(min)綜(zong)合能耗下(xia)降5.8%

據(ju)了解,蘇州大規模源網荷儲友好互動系統的增(zeng)補(bu)大用戶接入(ru)工程(cheng)也在(zai)有序推進,今年*高(gao)毫秒級(ji)在(zai)控(kong)負荷將達到70萬(wan)千瓦,有力支撐電網(wang)動態(tai)調節(jie)消(xiao)納大規模清潔能源(yuan)。

 


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