混合气体绝缘设备充、补气技术研究
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摘要
混合绝缘气体充气、补气是混合气体绝缘设备运维的重要环节。现有的分压充、补气方法,难以精确控制气体混合比例,不能满足混合气体绝缘设备大规模推广的技术要求。为此结合SF_6气体现场充、补气技术经验,提出以动态配气原理为基础的SF_6、N_2等组分精确加压配气技术方案,研制新型混合气体加压配气补气装置,装置能够实现SF_6气体与N_2等两组分混合绝缘气体的现场连续精确配制,气体混合比例范围0%～100%可调,配气误差小于1%,满足不同设备精确配比加压充补气要求。同时提出混合绝缘气体现场补气比例的计算公式,可根据混合气体绝缘设备实际比例,获得合适的补气浓度。
Gas filling and supplying is an important part for the operation and maintenance of mixed gas insulation equipment. Due to the difficulty in accurately controlling the mixing ratio, the existing gas filling and supplying method based on partial pressure cannot meet the technical requirements of the large-scale promotion of mixed gas insulation equipment. Combined with the experience of SF_6 filling and supplying technology, this paper puts forward the gas preparation method under a certain pressure based on the principle of dynamic gas distribution of SF_6, N_2, etc. A new type of mixed gas filling and supplying device is developed, which can realize the accurate and continuous mixing of SF_6 and N_2; the ratio ranges from 0% to 100% and the distribution error is less than 1%. Also, the formula of the mixture ratio of the mixed insulation gas is proposed, which can be used to obtain the suitable gas concentration according to the actual proportion of the mixed gas insulation equipment.
Gas filling and supplying is an important part for the operation and maintenance of mixed gas insulation equipment. Due to the difficulty in accurately controlling the mixing ratio, the existing gas filling and supplying method based on partial pressure cannot meet the technical requirements of the large-scale promotion of mixed gas insulation equipment. Combined with the experience of SF_6 filling and supplying technology, this paper puts forward the gas preparation method under a certain pressure based on the principle of dynamic gas distribution of SF_6, N_2, etc. A new type of mixed gas filling and supplying device is developed, which can realize the accurate and continuous mixing of SF_6 and N_2; the ratio ranges from 0% to 100% and the distribution error is less than 1%. Also, the formula of the mixture ratio of the mixed insulation gas is proposed, which can be used to obtain the suitable gas concentration according to the actual proportion of the mixed gas insulation equipment.
引文
[1] Christophorou L G, Olthoff J K, Green D S. Gases for electrical insulation and arc interruption: possible present and future alternatives to pure SF6[J]. IEEE Power Engineering Review, 2003, 18(6): 31.
[2] 张辉,焦俊韬,肖登明,等.六氟化硫的替代灭弧气体电气特性研究综述[J].电工电气,2016,3(3):1-5.
[3] 贾申利,赵虎,等.SF6替代气体灭弧性能的研究进展综述[J].高压电器, 2011,47(11):87-92.
[4] 李兴文,赵虎.SF6替代气体的研究进展综述[J].高电压技术,2016,42(6):1695-1701.
[5] 汤昕,廖四军,杨鑫.SF6混合/替代气体绝缘性能的研究进展[J].绝缘材料,2014,47(6):18-22.
[6] 张高潮.气体绝缘输电管线研究现状[J].绝缘材料,2014,47(6):6-9.
[7] Koch H, Hopkins M. Overview of gas insulated lines(GIL)[J]. Power Engineering Society General Meeting, 2005(1): 940-944.
[8] 王湘汉,汪沨,邱毓昌.气体绝缘传输线的近期发展动向[J].高压电器,2008,44(1):69-72.
[9] 周辉,邱毓昌,仝永刚,等. N2/SF6混合气体的绝缘特性[J].高压电器,2003,39(5):13-15.
[10] 王琦,邱毓昌.N2/SF6混合气体在气体绝缘管道电缆中的应用[J].电线电缆,2004(1):28-29.
[11] 李松琴. SF6混合气体在开关设备中的应用[J].电气技术,2011(12):68-70.
[12] 郭璨,张乔根,文韬,等.雷电冲击下稍不均匀电场中SF6/N2混合气体的协同效应[J].高电压技术,2015,41(1):69-75.
[13] 牛文军,魏俊梅,张铎,等.550 kV SF6/N2充气母线绝缘性能研究[J].高压电器,2014,50(1):77- 80.
[14] 申强,孙亮,仲伟涛,等.SF6断路器在北方高寒地区的选择与应用[J].黑龙江电力,2004,26(6):425- 427.
[15] LIU Xueli, XIAO Dengming. Monte Carlo simulation of electrons warm parameters in the SF6/CF4 gas mixtures[J]. Japanese Journal of Applied Physics, 2007, 46(4A): 1663-1667.
[16] 苏镇西,刘伟.关于SF6混合绝缘气体几个重要问题的探讨[J].高压电器,2016,52(12):232-236.
[2] 张辉,焦俊韬,肖登明,等.六氟化硫的替代灭弧气体电气特性研究综述[J].电工电气,2016,3(3):1-5.
[3] 贾申利,赵虎,等.SF6替代气体灭弧性能的研究进展综述[J].高压电器, 2011,47(11):87-92.
[4] 李兴文,赵虎.SF6替代气体的研究进展综述[J].高电压技术,2016,42(6):1695-1701.
[5] 汤昕,廖四军,杨鑫.SF6混合/替代气体绝缘性能的研究进展[J].绝缘材料,2014,47(6):18-22.
[6] 张高潮.气体绝缘输电管线研究现状[J].绝缘材料,2014,47(6):6-9.
[7] Koch H, Hopkins M. Overview of gas insulated lines(GIL)[J]. Power Engineering Society General Meeting, 2005(1): 940-944.
[8] 王湘汉,汪沨,邱毓昌.气体绝缘传输线的近期发展动向[J].高压电器,2008,44(1):69-72.
[9] 周辉,邱毓昌,仝永刚,等. N2/SF6混合气体的绝缘特性[J].高压电器,2003,39(5):13-15.
[10] 王琦,邱毓昌.N2/SF6混合气体在气体绝缘管道电缆中的应用[J].电线电缆,2004(1):28-29.
[11] 李松琴. SF6混合气体在开关设备中的应用[J].电气技术,2011(12):68-70.
[12] 郭璨,张乔根,文韬,等.雷电冲击下稍不均匀电场中SF6/N2混合气体的协同效应[J].高电压技术,2015,41(1):69-75.
[13] 牛文军,魏俊梅,张铎,等.550 kV SF6/N2充气母线绝缘性能研究[J].高压电器,2014,50(1):77- 80.
[14] 申强,孙亮,仲伟涛,等.SF6断路器在北方高寒地区的选择与应用[J].黑龙江电力,2004,26(6):425- 427.
[15] LIU Xueli, XIAO Dengming. Monte Carlo simulation of electrons warm parameters in the SF6/CF4 gas mixtures[J]. Japanese Journal of Applied Physics, 2007, 46(4A): 1663-1667.
[16] 苏镇西,刘伟.关于SF6混合绝缘气体几个重要问题的探讨[J].高压电器,2016,52(12):232-236.