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

Article retrieval

文章檢索

首頁 >> 文章檢索 >> 文章瀏覽排名

短路電流非周期分量及其在繼電保護中的應(yīng)用

來源:電工電氣發(fā)布時間:2016-04-06 15:06 瀏覽次數(shù):15

短路電流非周期分量及其在繼電保護中的應(yīng)用 

馮建勤,黃思芳,宋海龍 
鄭州輕工業(yè)學(xué)院 電氣信息工程學(xué)院,河南 鄭州 450002 
 

摘 要:為準(zhǔn)確判斷電力系統(tǒng)短路故障,提出了一種利用短路電流中的非周期分量作為短路故障的判據(jù)。通過相量分析和仿真分析,研究了短路電流中的非周期分量。利用Matlab仿真軟件提取短路電流中的非周期分量,得出了短路電流中非周期分量的特點。利用這些特點將非周期分量法運用到繼電保護中去,既可單獨作為線路的主保護,也可與其它保護相結(jié)合,運行結(jié)果表明,運用此法可準(zhǔn)確判斷電力系統(tǒng)短路故障。
關(guān)鍵詞:短路電流;非周期分量;光電流互感器;繼電保護
中圖分類號:TM771 文獻(xiàn)標(biāo)識碼:B 文章編號:1007-3175(2014)12-0035-04


Short-Circuit Current Aperiodic Components and Their Application in Relay Protection 

FENG Jian-qin, HUANG Si-fang, SONG Hai-long 
College of Electric and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China 
 

Abstract:In order to accurately determine the short-circuit fault in power system, this paper proposed to use the aperiodic components in short-circuit current as a criterion in short-circuit faults and studied the aperiodic components in short-circuit current by phasor and simulation analysis. The aperiodic components in short-circuit current were simulated and extracted in Matlab to obtain the characteristics of the aperiodic components in the short-circuit current, so that the aperiodic components method was applied in the relay protection, either as a primary protection circuit alone, or as the combination with other protection circuit. The results show that this method can accurately judge the short-circuit faults of the power system.
                Key words:short-circuit current; aperiodic components; optical current transducer; relay protection


參考文獻(xiàn)
[1] El-Hadidy A M, Mahfouz A A.Impact of decaying DC component on the characteristics of over-current protective relays[C]//20th International Conference and Exhibition on Electricity Distribution,2009.
[2] 李勝芳,劉鋼,趙福平,等.非周期分量下電流互感器的相位特性研究[J].電測與儀表,2012,49(1):8-12.
[3] 李艷鵬,侯啟方,劉承志.非周期分量對電流互感器暫態(tài)飽和的影響[J].電力自動化設(shè)備,2006,26(8):15-18.
[4] 景敏慧,孔霄迪,覃松濤,等.P類電流互感器飽和原因分析及對策[J].電力系統(tǒng)自動化,2007,31(21):94-97.
[5] 張小鳴,費雨勝.一種濾除衰減直流分量的電流估計新算法[J].電力系統(tǒng)保護與控制,2010,38(20):90-95.
[6] 張秋麗,黃純,賀建輝,安明.一種消除衰減直流分量影響的改進DFT遞推算法[J].電力系統(tǒng)保護與控制,2010,38(24):1-5.
[7] 陳奎,孫常青,張麗,唐軼.一種新方法在監(jiān)視線保護中的應(yīng)用[J].電力系統(tǒng)保護與控制,2010,38(6):76-83.
[8] Abdulah A, Konjicua S.Algorithm for elimination of DC component from fault current[C]//IEEE Mediterranean Electrotechnical Conference,2006.
[9] Musa O, Aksamovic A.Comparative analysis of algorithms for elimination of exponentially decaying DC component[C]//19th International Conference on Systems, Signals and Image Processing,2012.
[10] Cho Y S, Lee C K, Gilsoo Jang, et al.An innovative decaying DC component estimation algorithm for digital relaying[J].IEEE Transactions on Power Delivery, 2009,24(1):73-78.
[11] 方剛,高仕斌,林國松,等.一種提高消除衰減非周期分量響應(yīng)速度的交流采樣數(shù)據(jù)修正法[J].電力系統(tǒng)保護與控制,2009,37(20):61-64.
[12] 唐建輝,吳在軍,胡敏強.一種精確濾除衰減非周期分量的新算法[J].繼電器,2005,33(11):14-17.
[13] 及洪泉,楊以涵,李巖松,等.基于光學(xué)電流互感器的非周期分量線路縱差保護[J].中國電機工程學(xué)報,2007,27(19):45-49.
[14] 李巖松,郭志忠,楊以涵,等.自適應(yīng)光學(xué)電流互感器的基礎(chǔ)理論研究[J].中國電機工程學(xué)報,2005,25(22):21-26.
[15] 劉青,王增平,徐巖,等.光學(xué)電流互感器對繼電保護系統(tǒng)的影響研究[J].電網(wǎng)技術(shù),2005,29(1):11-14.
[16] 馮建勤,馮巧玲.電氣工程基礎(chǔ)[M].北京:中國電力出版社,2010.