發(fā)電機(jī)伏赫茲限制與過激磁保護(hù)的配合整定研究 

宋瑋，劉桂林 
(華北電力大學(xué)，河北 保定 071000) 
 

摘 要： 針對發(fā)電機(jī)自動勵磁調(diào)節(jié)器中伏赫茲限制曲線的整定與發(fā)變組中過激磁保護(hù)曲線整定配合不盡合理的現(xiàn)象，分析了兩者之間的動作特性以及過激磁保護(hù)經(jīng)常配置的兩套方案，根據(jù)相關(guān)理論和它們的功能推導(dǎo)出伏赫茲限制應(yīng)優(yōu)先于過激磁保護(hù)動作，歸納出了伏赫茲限制與定時限過激磁保護(hù)、反時限過激磁保護(hù)之間配合整定的原則。結(jié)合工程實例進(jìn)行分析，指出在配合整定合理的情況下要考慮兩者之間留有合理的級差來更好地保證發(fā)電機(jī)的安全。
關(guān)鍵詞： 配合原則；發(fā)變組過激磁保護(hù)；伏赫茲限制；整定關(guān)系；反時限；定時限
中圖分類號：TM307+.3 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2014)07-0008-05

Study on Coordination Setting of Generator V/Hz Limit and Over Excitation Protection 

SONG Wei, LIU Gui-lin 
（North China Electric Power University, Baoding 071000, China） 
 

Abstract: Aiming at unreasonable coordination issues of V/Hz limit curves setting in automatic voltage regulator of generator and over excitation protection curves setting in transformer unit, this paper analyzed the action features between the two settings and two plans of over excitation protection normal disposition. According to the related theory and their functions, this paper deduced that V/Hz limit should have priority before over excitation action, generalizing the coordination setting principle among V/Hz limit, time limit over excitation protection and inverse time limit over excitation protection. The engineering practical example analysis shows that under the conditions of reasonable coordination setting, a reasonable grade difference between the two settings should be kept to ensure the safety of generator better.
         Key words: coordination principle; transformer unit over excitation protection; V/Hz limit; setting relationship; inverse time limit; time limit

參考文獻(xiàn)
[1] DL/T 684-2012 大型發(fā)電機(jī)變壓器繼電保護(hù)整定計算導(dǎo)則[S].
[2] GB/T 14285-2006 繼電保護(hù)和安全自動裝置技術(shù)規(guī)程[S].
[3] 涂義元.發(fā)電機(jī)過激磁保護(hù)誤動原因分析[J].華電技術(shù)，2010，32(7)：26-30.
[4] 顧志飛，江衛(wèi)良，郝后堂，等. 一種微機(jī)型反時限過激磁保護(hù)實現(xiàn)的方法[J]. 電力自動化設(shè)備，2012，32(7)：149-152.
[5] 劉取.電力系統(tǒng)穩(wěn)定性及發(fā)電機(jī)勵磁控制[M].北京：中國電力出版社，2007.
[6] 王維儉.電氣主設(shè)備繼電保護(hù)原理與應(yīng)用[M].北京：中國電力出版社，2010.
[7] 竺士章.發(fā)電機(jī)勵磁系統(tǒng)試驗[M].北京：中國電力出版社，2005.