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

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一起35 kV不接地系統(tǒng)單相弧光接地事故分析

來源:電工電氣發(fā)布時(shí)間:2018-06-15 14:15 瀏覽次數(shù):729
一起35 kV不接地系統(tǒng)單相弧光接地事故分析
 
韓煒煒,黃鑫,李啟鵬,楊海華
(南京南瑞繼保電氣有限公司,江蘇 南京 211102)
 
    摘 要:某220 kV變電站的35 kV不接地系統(tǒng)中,因單相接地故障引起的弧光接地過電壓,導(dǎo)致濾波支路過流保護(hù)動(dòng)作及多處設(shè)備損壞。闡述了事故的發(fā)生過程,分析了事故電壓波形并找出現(xiàn)場(chǎng)故障原因?;赑SCAD/EMTDC軟件建立了包含弧光接地故障的現(xiàn)場(chǎng)仿真模型,分析了間歇性弧光接地引起的過電壓過程,仿真結(jié)果驗(yàn)證了該事故是由于間歇性弧光接地引起系統(tǒng)故障的分析,并提出了相應(yīng)解決方案。
    關(guān)鍵詞:弧光接地;過電壓;PSCAD/EMTDC軟件;事故原因分析
    中圖分類號(hào):TM864     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2018)06-0046-04
 
Single Phase Arc-Earthing Accident Analysis of a Case of 35 kV Non-Effective Ground System
 
HAN Wei-wei, HUANG Xin, LI Qi-peng, YANG Hai-hua
(Nari-Relays Electric Co., Ltd, Nanjing 211102, China)
 
    Abstract: There was a single-phase ground fault of arc-earthing overvoltage causing filtering circuit over-current protective action which occurred in a 220 kV substation where the 35 kV system was non-effective grounded. Lots of equipments were damaged because of the non-continuous single-phase ground fault. This paper expounded the generating process of the accident, analyzed the accident voltage waveform and founded the field failure causes. The field simulation model including arc-earthing was established by using the common electromagnetic transient simulation software PSCAD/EMTDC. This paper analyzed the generating process of the overvoltage caused by the intermittent arc-earthing. The simulation results verify that this accident is caused by intermittent arc-earthing and the corresponding solution is proposed to avoid these incidents.
    Key words: arc-earthing; overvoltage; PSCAD/EMTDC software; accident cause analysis
 
參考文獻(xiàn)
[1] 劉連睿.10~35 kV系統(tǒng)弧光接地過電壓的危害及解決辦法[J]. 華北電力技術(shù),1999(3) :21-22.
[2] 陳筱平,劉雅潔,汪穎,等. 某實(shí)際間歇性弧光接地事故仿真分析與對(duì)策研究[J]. 電力科學(xué)與工程,2012,28(9) :10-17.
[3] 司馬文霞,冉銳,袁濤,等. 采用數(shù)學(xué)形態(tài)學(xué)的弧光接地過電壓識(shí)別方法[J]. 高電壓技術(shù),2010,36(4) :835-841.
[4] 顏建國(guó),平紹勛. 弧光接地過電壓的分析方法探討[J]. 江蘇電機(jī)工程,2012,31(2) :62-64.
[5] 平紹勛,周玉芳. 電力系統(tǒng)中性點(diǎn)接地方式及運(yùn)行分析[M]. 北京:中國(guó)電力出版社,2010.
[6] 平紹勛. 電力系統(tǒng)內(nèi)部過電壓保護(hù)及實(shí)例分析[M]. 北京:中國(guó)電力出版社,2006.
[7] JOHNS A T, AGGARWAL R K, SONG Y H. Improved techniques for modelling fault arcs on faulted EHV transmission systems[J]. IEE Proceedings- Generation,Transmission and Distribution,1994,141(2) :148-154.
[8] 韓愛芝,曾定文,魯鐵成. 配電網(wǎng)間歇性電弧接地過電壓的仿真分析與對(duì)策[J]. 高壓電器,2010,46(1) :72-75.
[9] 馮世濤,列劍平,鄭良華,等.10 kV配電網(wǎng)系統(tǒng)弧光接地過電壓研究[J]. 吉林電力,2010,38(5) :5-8.
[10] 夏國(guó)武,崔紅.10 kV系統(tǒng)工頻弧光接地過電壓的研究[J]. 東北電力大學(xué)學(xué)報(bào),2012,32(6) :33-37.
[11] 毛衛(wèi)華. 弧光接地過電壓的危害及消弧措施[J]. 電氣應(yīng)用,2008,27(10) :49-51.
[12] 許穎. 對(duì)消弧線圈“消除弧光接地過電壓”的異議[J]. 電力設(shè)備,2001,26(4) :48-50.
[13] 靳曉東,李謙,王曉瑜,等. 配電網(wǎng)弧光接地過電壓的仿真及分析[J]. 高電壓技術(shù),1994,20(3) :71-75.
[14] 姜壇. 弧光接地過電壓及其限制措施[ J ] . 銅業(yè)工程,2006(4) :43-46.
[15] 陳慈萱. 過電壓保護(hù)原理與運(yùn)行技術(shù)[M]. 北京:中國(guó)電力出版社,2001.
[16] 焦瑾. 鐵磁諧振過電壓事故及其防止(2)[J]. 江蘇電機(jī)工程,1998,17(4) :24-27.