1、 光伏并網柜簡介

     分布式(shi)(shi)并網光(guang)(guang)伏(fu)系(xi)統(tong)是利(li)用光(guang)(guang)伏(fu)組件將(jiang)太陽能(neng)直接轉變(bian)為(wei)(wei)電(dian)(dian)能(neng)的(de)發(fa)(fa)(fa)(fa)電(dian)(dian)方式(shi)(shi)，并且(qie)能(neng)一(yi)定(ding)程度保證發(fa)(fa)(fa)(fa)電(dian)(dian)的(de)穩定(ding)性(xing)、可靠(kao)性(xing)及供給配(pei)電(dian)(dian)網電(dian)(dian)能(neng)質量，是一(yi)種(zhong)新型的(de)、環保型且(qie)具(ju)有(you)長遠發(fa)(fa)(fa)(fa)展(zhan)前(qian)景的(de)發(fa)(fa)(fa)(fa)電(dian)(dian)系(xi)統(tong)。該(gai)系(xi)統(tong)在用戶(hu)所在場(chang)地或(huo)附近(jin)建(jian)(jian)(jian)設(she)運行，以(yi)(yi)用戶(hu)側自發(fa)(fa)(fa)(fa)自用為(wei)(wei)主、多(duo)余電(dian)(dian)量上網且(qie)在配(pei)電(dian)(dian)網系(xi)統(tong)平衡調節為(wei)(wei)特(te)征的(de)光(guang)(guang)伏(fu)發(fa)(fa)(fa)(fa)電(dian)(dian)設(she)施。它能(neng)夠就近(jin)逐步(bu)解決用戶(hu)的(de)用電(dian)(dian)問題，通過并網送去(qu)實(shi)現供電(dian)(dian)差額(e)的(de)補(bu)償與外送。光(guang)(guang)伏(fu)電(dian)(dian)源處于用戶(hu)側，發(fa)(fa)(fa)(fa)電(dian)(dian)供給當地負荷(he)，可以(yi)(yi)有(you)效減少對電(dian)(dian)網供電(dian)(dian)的(de)依賴，減少線路損耗(hao)。通過借助建(jian)(jian)(jian)筑物表(biao)面(mian)，將(jiang)光(guang)(guang)伏(fu)蓄電(dian)(dian)池作(zuo)為(wei)(wei)建(jian)(jian)(jian)筑材料，從而有(you)效地增加(jia)光(guang)(guang)伏(fu)電(dian)(dian)站的(de)占地面(mian)積。分布式(shi)(shi)光(guang)(guang)伏(fu)發(fa)(fa)(fa)(fa)電(dian)(dian)系(xi)統(tong)規模較小，可以(yi)(yi)根據實(shi)際要求進行建(jian)(jian)(jian)設(she)，建(jian)(jian)(jian)設(she)區域選擇(ze)性(xing)較大(da)，在未(wei)來能(neng)源綜合利(li)用發(fa)(fa)(fa)(fa)展(zhan)中有(you)很大(da)的(de)發(fa)(fa)(fa)(fa)展(zhan)空間。

     并(bing)網(wang)柜主(zhu)要(yao)由刀閘、斷路器及有關的(de)控制元件組(zu)成，由于其連接(jie)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機系(xi)統(tong)(tong)和(he)電(dian)(dian)(dian)(dian)(dian)網(wang)系(xi)統(tong)(tong)，安裝(zhuang)有完備(bei)的(de)并(bing)網(wang)保(bao)護裝(zhuang)置，起到發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)機并(bing)網(wang)作用(yong)，而被稱為(wei)“并(bing)網(wang)柜"。 光(guang)伏(fu)(fu)(fu)并(bing)網(wang)柜作為(wei)光(guang)伏(fu)(fu)(fu)電(dian)(dian)(dian)(dian)(dian)站的(de)總出口存在于光(guang)伏(fu)(fu)(fu)系(xi)統(tong)(tong)中，是連接(jie)光(guang)伏(fu)(fu)(fu)電(dian)(dian)(dian)(dian)(dian)站和(he)電(dian)(dian)(dian)(dian)(dian)網(wang)的(de)配(pei)電(dian)(dian)(dian)(dian)(dian)裝(zhuang)置，可(ke)(ke)以保(bao)護、計量光(guang)伏(fu)(fu)(fu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)的(de)總量，方便故障檢(jian)修管理，提高(gao)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)的(de)安全性和(he)經濟效益(yi)。具(ju)備(bei)檢(jian)失壓(ya)(ya)分(fen)閘、檢(jian)有壓(ya)(ya)合閘、過(guo)流保(bao)護、過(guo)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)保(bao)護、孤島保(bao)護、防(fang)逆(ni)流保(bao)護、諧波治理、無功補償等多項保(bao)護功能，同時具(ju)備(bei)顯示光(guang)伏(fu)(fu)(fu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)運行參數和(he)狀態指示，被廣泛運用(yong)于光(guang)伏(fu)(fu)(fu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)，與光(guang)伏(fu)(fu)(fu)并(bing)網(wang)逆(ni)變器配(pei)套(tao)使用(yong)可(ke)(ke)組(zu)成一套(tao)完整的(de)光(guang)伏(fu)(fu)(fu)發(fa)(fa)(fa)電(dian)(dian)(dian)(dian)(dian)系(xi)統(tong)(tong)解決方案。

2、 光伏并網柜綜合監測解決方案

     光伏并網柜在(zai)運行中，會(hui)出(chu)現電(dian)網側電(dian)壓、頻率等(deng)方面的(de)(de)波動(dong)(dong)對本站造成沖擊、負荷過(guo)(guo)高等(deng)現象，不僅會(hui)對電(dian)網設備造成損壞還會(hui)威(wei)脅到維護人(ren)員(yuan)的(de)(de)生命安全。諧波問題是光伏發電(dian)的(de)(de)主要(yao)問題，光伏發電(dian)使(shi)用(yong)交、直流(liu)逆變(bian)器，由(you)于逆變(bian)器是通(tong)過(guo)(guo)半導體功(gong)率開關的(de)(de)開通(tong)和關斷作用(yong)，把直流(liu)電(dian)轉(zhuan)變(bian)成交流(liu)電(dian)，在(zai)此環節會(hui)產生諧波問題。另(ling)外由(you)于光伏項目的(de)(de)不確定性，造成輸出(chu)功(gong)率的(de)(de)隨機波動(dong)(dong)，導致電(dian)網頻率偏差、電(dian)壓波動(dong)(dong)與閃變(bian)等(deng)。

     針對上述情況，本解決方案利用防孤島保護裝置采集并(bing)網(wang)電(dian)(dian)(dian)(dian)(dian)壓(ya)、頻(pin)率(lv)及(ji)電(dian)(dian)(dian)(dian)(dian)網(wang)進線電(dian)(dian)(dian)(dian)(dian)流等(deng)信號，當發生(sheng)孤島現象(xiang)時，快速(su)切除并(bing)網(wang)點，使(shi)本站與電(dian)(dian)(dian)(dian)(dian)網(wang)側(ce)快速(su)脫(tuo)離。同時配置(zhi)電(dian)(dian)(dian)(dian)(dian)能質量在線監(jian)測(ce)裝置(zhi)，對電(dian)(dian)(dian)(dian)(dian)壓(ya)諧波、電(dian)(dian)(dian)(dian)(dian)壓(ya)波動與閃變、頻(pin)率(lv)偏(pian)差(cha)、電(dian)(dian)(dian)(dian)(dian)壓(ya)不平衡度、電(dian)(dian)(dian)(dian)(dian)壓(ya)暫(zan)(zan)降/暫(zan)(zan)升(sheng)/短時中斷等(deng)進行(xing)實(shi)時監(jian)測(ce)。通(tong)過這兩種設(she)(she)備在光伏并(bing)網(wang)柜中的使(shi)用，為電(dian)(dian)(dian)(dian)(dian)網(wang)的可靠運行(xing)提供保障。本解(jie)決(jue)方案設(she)(she)備配置(zhi)方案如表(biao)一。

表一 配置方案

3、 產品簡介

3.1 AM5SE-IS微機保(bao)護裝置

AM5SE-IS防孤島保護裝置主要適用于(yu)35kV、10kV及低壓380V光伏發(fa)電(dian)(dian)、燃氣發(fa)電(dian)(dian)等(deng)新能源并網供電(dian)(dian)系統。當發(fa)生(sheng)孤島現(xian)象時，可以(yi)快速(su)切除并網點，使本站與(yu)電(dian)(dian)網側快速(su)脫離，保(bao)證整個(ge)電(dian)(dian)站和相關維(wei)護人員的(de)生(sheng)命安全。

?技術參數

?主要功能

?外形及開孔尺寸

?安裝方法

裝(zhuang)(zhuang)置(zhi)采用面板(ban)嵌入式安(an)裝(zhuang)(zhuang)，首先在屏體面板(ban)上(shang)(shang)按(an)開孔(kong)尺(chi)寸開孔(kong)，如(ru)圖(tu)1。再將裝(zhuang)(zhuang)置(zhi)按(an)圖(tu)2所示(shi)放(fang)入開孔(kong)中，直(zhi)到裝(zhuang)(zhuang)置(zhi)面板(ban)靠住機柜的面板(ban)。將支架放(fang)置(zhi)于機柜面板(ban)的內部（上(shang)(shang)下(xia)各(ge)有一個支架），如(ru)圖(tu)3，旋轉4個固定螺(luo)絲(si)(si)，使裝(zhuang)(zhuang)置(zhi)牢固固定在機柜面板(ban)上(shang)(shang)，后蓋上(shang)(shang)4個翻蓋即(ji)可(ke)。（翻蓋上(shang)(shang)方(fang)有小缺口，拆卸時需用一字(zi)螺(luo)絲(si)(si)刀(dao)插入小缺口將翻蓋取下(xia)。）

3.2 APView500電能質(zhi)量在線監測裝置

APView500電(dian)能(neng)質量(liang)(liang)在線監(jian)(jian)測(ce)(ce)裝置集諧波分析、波形采樣(yang)、電(dian)壓(ya)暫(zan)降/暫(zan)升/中(zhong)斷、閃變(bian)監(jian)(jian)測(ce)(ce)、電(dian)壓(ya)不平(ping)衡度監(jian)(jian)測(ce)(ce)、事(shi)件(jian)記錄、測(ce)(ce)量(liang)(liang)控制等(deng)功能(neng)為一體。能(neng)夠滿足110kV及以(yi)下(xia)供(gong)電(dian)系(xi)統電(dian)能(neng)質量(liang)(liang)監(jian)(jian)測(ce)(ce)的要求，廣泛適用于化工、鋼鐵、冶金、醫院、數據中(zhong)心、交通建筑等(deng)行(xing)業(ye)的電(dian)能(neng)質量(liang)(liang)監(jian)(jian)測(ce)(ce)。

?技術參數

?監測精度

?基本功能