高壓直流輸電用閥電抗器鐵芯損耗試驗(yàn)研究
黃華,張翔,劉磊,方太勛,楊帆,鄭力
(南京南瑞繼保電氣有限公司,江蘇 南京 211102)
摘 要:換流閥運(yùn)行時(shí),閥電抗器僅在換流閥開通和關(guān)斷的暫態(tài)過程中承受電壓,且交替工作于不飽和、飽和兩種狀態(tài),因此無法直接引用傳統(tǒng)的鐵芯損耗計(jì)算公式進(jìn)行鐵芯損耗計(jì)算,也就無法對(duì)閥電抗器的鐵芯設(shè)計(jì)進(jìn)行校核?;阼F芯損耗發(fā)熱引起的溫升等效原則,在相同的電抗器進(jìn)水溫度和相近的環(huán)境溫度下,分別設(shè)計(jì)了高頻和工頻工況下的鐵芯測(cè)溫試驗(yàn),根據(jù)工頻工況下測(cè)得的鐵芯溫升(對(duì)環(huán)溫),并利用高頻工況下試驗(yàn)得到的鐵芯損耗和鐵芯溫升(對(duì)環(huán)溫)的關(guān)系曲線,得到工頻工況下的鐵芯損耗實(shí)際值,從而對(duì)閥電抗器鐵芯設(shè)計(jì)進(jìn)行校核,確保在換流閥長(zhǎng)期運(yùn)行時(shí)不會(huì)閥電抗器出現(xiàn)異常發(fā)熱。
關(guān)鍵詞:換流閥;閥電抗器;鐵芯損耗;光纖測(cè)溫
中圖分類號(hào):TM406 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2019)05-0049-04
Experimental Study on Iron Core Loss of Valve Reactor for HVDC Transmission
HUANG Hua, ZHANG Xiang, LIU Lei, FANG Tai-xun, YANG Fan, ZHENG Li
(NR Electric Co., Ltd, Nanjing 2111 02, China)
Abstract: The valve reactor only withstands the voltage in the transient process of valve opening and closing, and it alternatingly works in the unsaturated and saturated two states, so that the core loss calculation couldn’t directly quote the traditional core loss calculation formula and also could check the core design of the valve reactor. This paper designed the iron core temperature test under high frequency and power frequency conditions respectively based on the equivalent principle of temperature rise caused by iron core loss and heat, which was the same reactor inlet temperature and similar ambient temperature. According to the core temperature rise (on the temperature) measured under the power frequency conditions, the test under high frequency condition was utilized to get the relation curve of the iron core loss and the iron core temperature rise (for the ambient temperature) and the actual value of iron core loss under power frequency condition, so as to check the iron core design of valve reactor, and to ensure that the valve reactor does not appear abnormal heat when converter valve is in the long-term operation.
Key words: converter valve; valve reactor; iron core loss; fiber temperature measurement
參考文獻(xiàn)
[1] 黃華,方太勛,劉磊,等. 晶閘管換流閥反向恢復(fù)特性建模及阻容參數(shù)優(yōu)化設(shè)計(jì)[J]. 電力自動(dòng)化設(shè)備,2017,37(2):187-190.
[2] 魯成棟,肖登明,秦松林. 特高壓直流換流閥的運(yùn)行性能及其失效機(jī)制[J]. 電氣技術(shù),2014(4):5-10.
[3] 劉杰, 張靜, 曹均正, 等. 直流輸電換流閥阻尼系統(tǒng)特性研究[J]. 中國(guó)電機(jī)工程學(xué)報(bào),2012,32(30):16-22.
[4] 唐平,趙剛. 考慮閥用電抗器飽和特性后換流閥單元的過電壓分布[J]. 電氣技術(shù),2013(11):36-39.
[5] 李勁松,楊慶新,李永建,等. 高頻高磁密時(shí)疊置硅鋼片的鐵芯損耗計(jì)算式改進(jìn)[J]. 高電壓技術(shù),2016,42(3):994-1002.
[6] 中華人民共和國(guó)國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局,中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì). 高壓直流換流站損耗的確定:GB/T 20989—2007[S]. 北京:中國(guó)標(biāo)準(zhǔn)出版社,2007:6-7.
[7] 紀(jì)鋒,陳鵬,魏曉光,等.HVDC換流閥用飽和電抗器的建模及仿真[J]. 智能電網(wǎng),2013,1(2):65-69.
[8] 陳鵬,曹均正,魏曉光,等. 高壓直流換流閥用飽和電抗器的暫態(tài)電路仿真模型[J]. 高電壓技術(shù),2014,40(1):288-293.
[9] 紀(jì)鋒,曹均正,陳鵬,等.HVDC整流側(cè)閥飽和電抗器鐵損仿真研究[J]. 電網(wǎng)技術(shù),2014,38(10):2680-2684.
[10] 紀(jì)鋒,曹均正,陳鵬,等. 高壓直流輸電系統(tǒng)逆變側(cè)閥飽和電抗器電氣應(yīng)力研究[J]. 高電壓技術(shù),2014,40(8):2579-2585.
[11] 陳鵬,孫寶奎,紀(jì)鋒.±1 100 kV特高壓直流換流閥飽和電抗器樣機(jī)的失效模式與加速壽命試驗(yàn)方法[J]. 高電壓技術(shù),2016,42(8):2612-2617.
[12] 周會(huì)高,許釩,黃超,等. 特高壓直流輸電換流閥運(yùn)行試驗(yàn)合成回路研究[J]. 高電壓技術(shù),2006,32(12):158-163.
[13] 楊一鳴,曹燕明.用合成回路進(jìn)行±800 kV向家壩—上海工程換流閥運(yùn)行試驗(yàn)[J]. 高電壓技術(shù),2010,36(1):281-284.
[14] 張建國(guó),付興珍. 高壓直流輸電晶閘管閥用飽和電抗器的設(shè)計(jì)[J]. 西安航空技術(shù)高等??茖W(xué)校學(xué)報(bào),2010,28(3):31-34.