420 kV GIS變電站雷電侵入波過電壓計算與防雷措施研究
馮汝明1,馮彪2,李鑫濤3
(1 內蒙古電力科學研究院,內蒙古 呼和浩特 010020;2 西安西電高壓開關有限責任公司,陜西 西安 710077;
3 渤海大學 控制科學與工程學院,遼寧 錦州 121013)
摘 要:420 kV GIS變電站在發(fā)生雷電侵入過電壓時,雷電波將沿線路傳入變電站,嚴重影響設備的絕緣水平,其與保護裝置避雷器之間的絕緣配合問題是電力系統(tǒng)中最基本和最重要的一種絕緣配合。對氧化鋅避雷器的工作原理、特性及雷電流的模擬進行了闡述,以某420 kV GIS變電站為對象,利用電磁暫態(tài)程序(ATP-EMTP)搭建了電磁暫態(tài)仿真平臺,對國外某420 kV GIS變電站400 kV側出線段桿塔受雷擊時,引起絕緣子發(fā)生閃絡后侵入波雷電過電壓進行計算,在其最嚴重的單線單母單變運行方式下,在給定避雷器配置方案措施下,獲得420 kV GIS變電站出線端電壓互感器及主變壓器端口的過電壓波形。通過計算分析,設計滿足規(guī)范及工程實際要求。
關鍵詞:GIS 變電站;雷電侵入波過電壓;絕緣配合;金屬氧化鋅避雷器
中圖分類號:TM633+.3 文獻標識碼:A 文章編號:1007-3175(2020)09-0013-06
Overvoltage Calculation and Measure of Lightning Intrusion Wave in 420 kV GIS Substation
FENG Ru-ming1, FENG Biao2, LI Xin-tao3
(1 Inner Mongolia Electric Power Science Research Institute, Hohhot 010020, China; 2 Xi'an Xidian High Voltage Switch Co., Ltd, Xi'an 710077, China;
3 School of Control Science and Engineering, Bohai University, Jinzhou 121013, China)
Abstract: When a lightning intrusion overvoltage occurs in a 420 kV GIS substation, the lightning wave will be transmitted into the substation along the line, which will seriously affect the insulation level of the equipment, and the insulation coordination problem between it and the lightning arrester of the protection device is the most basic and important kind of insulation coordination in the power system.The working principle, characteristics and lightning current simulation of zinc oxide arresters are explained.Taking a 420 kV GIS substation as the object, an electromagnetic transient simulation platform is built using the electromagnetic transient program (ATP-EMTP). Calculate the lightning overvoltage of the intrusion wave after the insulator flashover occurred when the pole tower on the 400 kV side of a 420 kV GIS substation abroad was struck by lightning.Assume that under its most serious single-line single-bus single-transformation operation mode, under the given arrester configuration plan, the overvoltage waveform of the voltage transformer at the outlet end of the 420 kV GIS substation and the main transformer port is obtained.Under its most serious single-line single-bus single-transformation operation mode, under the given arrester configuration plan, the overvoltage waveform of the voltage transformer at the outlet end of the 420 kV GIS substation and the
main transformer port is obtained.
Key words: GIS substation; lightning intrusion wave overvoltage; insulation coordination; MOA
參考文獻
[1] 李福壽. 電力系統(tǒng)過電壓計算[M]. 北京:水利電力出版社,1998.
[2] PANEK J, ALBRECHT P F, ELAHI H. Design criteria for lightning protection of HV substations[J].IEEE Transactions on Power Delivery,2002,7(2):489-498.
[3] 趙智大. 高電壓技術[M]. 北京:中國電力出版社,2018.
[4] 彭謙,李軍,卞鵬,等. 改進電氣幾何模型法在1 000 kV輸電線路雷電繞擊跳閘率計算中的應用[J]. 電網(wǎng)技術,2010,34(9):155-159.
[5] 司馬文霞,謝博,楊慶,等. 特高壓輸電線路雷電過電壓的分類識別方法[J]. 高電壓技術,2010,36(2):306-312.
[6] 劉青,張玉峰,程勇.220 kV GIS變電站雷電過電壓防護措施的研究[J]. 高壓電器,2008,44(4):329-331.
[7] 林莘,庚振新,徐建源,等.550 kV全封閉組合電器快速暫態(tài)過電壓影響因素分析[J]. 電網(wǎng)技術,2009,33(19):190-194.
[8] 林莘. 現(xiàn)代高壓電器技術[M]. 北京:機械工業(yè)出版社,2002.
[9] 李志兵,顏湘蓮,王浩,等. 金屬氧化物避雷器在陡波下的試驗與模型分析[J]. 高電壓技術,2012,38(10):223-231.
[10] 趙麗,李涵. 金屬氧化物避雷器雷擊失效概率分析[J]. 電瓷避雷器,2016(5):126-129.
[11] 張桂紅,郭潔,徐燕飛,等. 金屬氧化物避雷器陡波下模型的準確性分析[J]. 高電壓技術,2007,33(3):83-86.
[12] 施圍,郭潔. 電力系統(tǒng)過電壓計算[M].2 版. 北京:高等教育出版社,2006.