Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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變電站直流電源系統(tǒng)環(huán)網(wǎng)故障分析

來(lái)源:電工電氣發(fā)布時(shí)間:2023-07-27 13:27 瀏覽次數(shù):268

變電站直流電源系統(tǒng)環(huán)網(wǎng)故障分析

張譏培,劉亞娟,程意平
(國(guó)網(wǎng)河南省電力公司平頂山供電公司,河南 平頂山 467200)
 
    摘 要:隨著對(duì)電網(wǎng)安全要求越來(lái)越高,因直流環(huán)網(wǎng)引起的繼電保護(hù)裝置拒動(dòng)和誤動(dòng)案例也越來(lái)越多。介紹了直流環(huán)網(wǎng)類型及原因,并討論了不同直流環(huán)網(wǎng)類型對(duì)直流電源影響表征現(xiàn)象和影響程度,發(fā)現(xiàn)按直流環(huán)網(wǎng)對(duì)直流系統(tǒng)的影響程度和緊急情況而言,兩極異極環(huán)網(wǎng)最為嚴(yán)重,單極異極環(huán)網(wǎng)次之,同極環(huán)網(wǎng)影響程度最小,為現(xiàn)場(chǎng)檢修人員提供了判斷依據(jù),縮短了故障查找和處理時(shí)限。
    關(guān)鍵詞: 直流環(huán)網(wǎng);過渡電阻;對(duì)地電壓
    中圖分類號(hào):TM711     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2023)07-0037-04
 
Ring Network Fault Analysis of DC Power Source System in Substations
 
ZHANG Ji-pei, LIU Ya-juan, CHENG Yi-ping
(State Grid Henan Electric Power Company Pingdingshan Power Supply Company, Pingdingshan 467200, China)
 
    Abstract: As the requirements of power grid security become higher, more and more cases of refuse operation and false action of relay protection devices caused by DC ring network appear. The paper introduces the types and causes of DC ring network and discusses the effects of different types of DC ring network on DC power source characterization and influence degree. From the perspective of the influence degree of DC ring network on DC system and emergency situation, bipolar heteropolar ring network is the most serious, unipolar heteropolar ring network is the second, and homopolar ring network has the least influence degree. Therefore, the above conclusion can provide judgment basis for on-site maintenance personnel and shorten the time of fault search and treatment.
    Key words: DC ring network; transition resistance; ground voltage
 
參考文獻(xiàn)
[1] 李晶,陳纓,陳軻娜,等. 發(fā)電廠和變電(換流)站直流電源系統(tǒng)可靠性[M]. 北京:中國(guó)電力出版社,2018.
[2] 趙張磊,劉希嘉,陳剛,等. 變電站直流異極性環(huán)網(wǎng)故障分析與解決方案[J]. 電工技術(shù),2019(21):110-112.
[3] 中國(guó)電力企業(yè)聯(lián)合會(huì). 電力系統(tǒng)用蓄電池直流電源裝置運(yùn)行與維護(hù)技術(shù)規(guī)程:DL/T 724—2021[S]. 北京:中國(guó)電力出版社,2021:7.
[4] 李善龍.變電站直流絕緣檢測(cè)系統(tǒng)設(shè)計(jì)及應(yīng)用研究[D].濟(jì)南:山東大學(xué),2016.
[5] 全杰雄,溫才權(quán). 變電站直流系統(tǒng)直流互竄事件分析[J]. 電工技術(shù),2020(22):98-100.
[6] 梁建斌. 變電站直流系統(tǒng)接地故障查找的研究[D].廣州:華南理工大學(xué),2013.
[7] 吳劍鳴,嚴(yán)正. 控制電纜的分布電容對(duì)繼電保護(hù)的影響及防范措施[J] . 電力自動(dòng)化設(shè)備,2007,27(11):115-118.
[8] 李應(yīng)文,彭明智,張純. 變電站直流電源系統(tǒng)直流環(huán)網(wǎng)與交流竄入的原因及危害[J] . 自動(dòng)化與儀器儀表,2018(7):57-60.
[9] 黃志鵠. 變電站直流電源系統(tǒng)兩段母線環(huán)網(wǎng)故障分析[J]. 廣西電業(yè),2011(12):83-84.
[10] 中國(guó)電力企業(yè)聯(lián)合會(huì). 直流電源系統(tǒng)絕緣監(jiān)測(cè)裝置技術(shù)條件:DL/T 1392—2014[S] . 北京:中國(guó)電力出版社,2015:3.