±500kV同塔三回柔性直流输电线路的电磁环境Study on Electromagnetic Environment of ±500 kV Triple-circuit Flexible DC Transmission Line on Same Tower
马晓倩;何堃;谢莉;陆家榆;鞠勇;
摘要(Abstract):
根据柔性直流电网多端友好接入和网络化的特点,以及走廊资源日趋紧张的现状,±500 kV同塔三回柔性直流线路需求日益迫切。在线路设计时,需要合理选择±500 kV同塔三回柔性直流输电线路的极导线排列方式和线路参数,以使线路的电磁环境满足环境保护要求。分别采用基于EPRI经验公式、CISPR经验公式以及叠加原理的可听噪声和无线电干扰计算方法,研究了同塔三回直流输电线路采用不同型号导线时的可听噪声和无线电干扰水平,确定了不同极导线排列方式下满足可听噪声和无线电干扰限值要求的最小导线。采用基于上流有限元法的合成电场数值算法计算分析了采用不同导线时同塔三回直流输电线路的地面合成电场,确定了不同极导线排列方式下满足地面合成电场限值要求的导线最小高度。针对在已有单回或双回直流线路上方增设双极直流线路使之变成同塔三回直流线路的工程需求,研究分析了增设前后直流线路电磁环境的变化规律,结果表明,选择合适的极导线排列方式,可使增设后形成的同塔三回直流线路的电磁环境满足限值要求。
关键词(KeyWords): 同塔三回直流输电线路;电磁环境;合成电场;可听噪声;无线电干扰;导线选型;导线最小高度
基金项目(Foundation): 国家电网公司科技项目(GY71-18-047):“500 kV柔性直流线路同塔三回或与交流线路同塔双回设计应用研究”~~
作者(Author): 马晓倩;何堃;谢莉;陆家榆;鞠勇;
Email:
DOI: 10.13335/j.1000-3673.pst.2019.1247
参考文献(References):
- [1]汤广福,王高勇,贺之渊,等.张北500 kV直流电网关键技术与设备研究[J].高电压技术,2018,44(7),2097-2106.Tang Guangfu,Wang Gaoyong,He Zhiyuan,et a1. Research on key technology and equipment for Zhangbei 500 kV DC grid[J].High Voltage Engineering,2018,44(7):2097-2106(in Chinese).
- [2]李英彪,卜广全,王姗姗,等.张北柔直电网工程直流线路短路过程中直流过电压分析[J].中国电机工程学报,2017,37(12):33-41,308.Li Yingbiao,Bu Guangquan,Wang Shanshan,et a1.Analysis of DC overvoltage caused by dc short-circuit fault in Zhangbei VSC-based DC grid[J].Proceedings of the CSEE,2017,37(12):33-41,308(in Chinese).
- [3]吴桂芳.我国±500 kV直流输电工程的电磁环境问题[J].电网技术,2005,29(11):5-8.Wu Guifang.Electromagnetic environment problem brought about by±500 kV DC transmission project in China[J]. Power System Technology,2005,29(11):5-8(in Chinese).
- [4]陆家榆,鞠勇.±800 kV直流输电线路电磁环境限值研究[J].中国电力,2006,39(10):37-42.Lu Jiayu,Ju Yong.Study on the limits of electromagnetic environment of±800 kV DC transmission lines[J].Electric Power,2006,39(10):37-42(in Chinese).
- [5]杨勇,陆家榆,雷银照.极导线垂直排列直流线路地面合成电场的一种计算方法[J].中国电机工程学报,2007,27(21):13-18.Yang Yong,Lu Jiayu,Lei Yinzhao.A calculation method for the total electric field strength at the ground level under vertical bipolar HVDC transmission lines[J].Proceedings of the CSEE,2007,27(21):13-18(in Chinese).
- [6]杨勇,鞠勇,陆家榆,等.极导线垂直和水平排列±500 kV直流输电线路的电磁环境比较分析[J].电网技术,2008,32(6):71-75.Yang Yong,Ju Yong,Lu Jiayu,et a1.Comparative analysis on electromagnetic environment of±500 kV DC transmission lines with vertical and horizontal pole arrangements[J]. Power System Technology,2008,32(6):71-75(in Chinese).
- [7]杨勇,陆家榆,雷银照.同塔双回高压直流线路地面合成电场的计算方法[J].中国电机工程学报,2008,28(6):32-36.Yang Yong,Lu Jiayu,Lei Yingzhao.Calculation of the total electric field at ground level for double-circuit HVDC overhead transmission lines[J].Proceedings of the CSEE,2008,28(6):32-36(in Chinese).
- [8]杨勇,陆家榆,雷银照.同走廊双回直流线路地面合成电场计算[J].电网技术,2009,33(19):181-185.Yang Yong,Lu Jiayu,Lei Yingzhao.Calculation of total electric field at ground level underneath double-circuit HVDC transmission lines in the same corridor[J].Power System Technology,2009,33(19):181-185(in Chinese).
- [9]杨扬,陆家榆,杨勇.基于上流有限元法的同走廊两回±800 kV直流线路地面合成电场计算[J].电网技术,2012,36(4):22-27.Yang Yang,Lu Jiayu,Yang Yong.Calculation of total electric field at the ground level under double-circuit±800 kV DC transmission lines arranged on same corridor with upstream FEM method[J].Power System Technology,2012,36(4):22-27(in Chinese).
- [10]刘泽洪,陆家榆,余军,等.同走廊两回±800 kV直流线路地面合成电场研究(英文)[J].中国电机工程学报,2011,31(6):121-130.Liu Zehong,Lu Jiayu,Ju Yong,et al.Study on the total electric field at the ground level under two-circuit±800 kV DC transmission lines in the same corridor[J].Proceedings of the CSEE,2011,31(6):121-130.
- [11]马晓倩,陆家榆,鞠勇.同塔双回交流线路改直流线路合成电场分析[J].电网技术,2015,39(6):1538-1545.Ma Xiaoqian,Lu Jiayu,Ju Yong.Study of total electric field of DC lines converted from double-circuit AC line[J]. Power System Technology,2015,39(6):1538-1545(in Chinese).
- [12] Yang Y,Lu J,Lei Y.A calculation method for the electric field under double-circuit HVDC transmission lines[J].IEEE Transactions on Power Delivery,2008,23(4):1736-1742.
- [13] Lu T,Feng H,Zhao Z,et al.Analysis of the electric field and ion current density under ultra high-voltage direct-current transmission lines based on finite element method[J]. IEEE Transactions on Magnetics,2007,43(4):1221-1224.
- [14]刘杰,田冀焕,邹军,等.双回直流线路无线电干扰与可听噪声计算[C].中国电机工程学会电磁干扰专业委员会第十届学术会议,西安,2007:117-124.
- [15] Zhao L,Lu J,Cui X,et al.The altitude effect and correction of audible noise for HVDC transmission lines[J].IEEE Transactions on Power Delivery,2016,32(4):1954-1963.
- [16] Li X,Zhao L,Lu J,et al.Altitude correction of radio interference of HVDC transmission lines part i:converting method of measured data[J].IEEE Transactions on Electromagnetic Compatibility,2017,59(1):275-283.
- [17] Zhao L,Xiang C,Li X,et al.Altitude correction of radio interference of HVDC transmission lines part II:measured data analysis and altitude correction[J]. IEEE Transactions on Electromagnetic Compatibility,2017,59(1):284-292.
- [18] DL 5497—2015,高压直流架空输电线路设计技术规程[S].
- [19] PQ/GDW 181—2008,±500 kV直流架空输电线路设计技术规定[S].
- [20] DL/T 436—2005,高压直流架空送电线路技术导则[S].