1) 500 kV transmission network
500kV输电网
2) 500 kV power network
500kV电网
1.
scussion about future structure of 500 kV power network in bulk power system;
试谈大区系统500kV电网远景结构
2.
The paper makes the analyses and discussions from five aspects,namely the reasons that appeals happen,electromagnetic environment level for 500 kV power network,related provisions in standards and regulations,existent problems and protection strategies.
为评估和应对超高压电网设计建设和运行方面日益突出的电磁环境问题,介绍了我国500kV电网的电磁环境状况以及国内有关标准的规定和差异、国际非电离辐射防护委员会导则、IEEE标准的工频电场和磁场的限值;分析了我国电网环保目前存在的主要问题;还根据我国的实际,提出了电网的环保策略及其建议。
3) 500kV grids
500kV电力网
1.
Energy losses are an important technical and economical index in power systems, with the 500kV systems becoming the main grids in our country, it is necessary to study the operating features of the 500kV grids and improve the calculation of energy losses.
本文针对上述问题,作了以下研究工作:第一部分介绍了500kV电力网电能损耗计算的基础理论及其特殊性。
4) 500 kV transmission line
500kV输电线路
1.
ArcGIS-based Value-added application development for 500 kV transmission line information management systems;
基于ArcGIS技术的500kV输电线路信息管理系统的增值应用开发
2.
In the light of the difficulties in the replacement of tension-resistant insulator string of 500 kV transmission line,such as the difficult fix of working tool,the complicate procedure,the limited operation space and the difficulties in the dismantle of bowel plate,etc,a new idea of shifting the tension of transmission line by using of double interconnection plate was put forward.
针对目前500kV输电线路更换耐张绝缘子串二种施工方法存在着工具安装困难、操作程序过多、操作空间狭小、碗头挂板拆卸困难、工作效率十分低下的问题,提出了用二联板转移导线张力的新思路。
5) 500kV transmission line
500kV输电线路
1.
In recent years, windage yaw flashover frequently occurs in 500kV transmission lines, and the frequency of such accident exceeds the receivable limit of power system secure operation.
近年来,500kV输电线路风偏闪络事故频繁发生,其频率已超过电力系统安全运行可接受的限度。
6) ±500 kV transmission line
±500kV输电线路
1.
Using Three-Gorges to Shanghai ±500 kV transmission line project in Hubei (Yue 2 section) as an example, through technical and economic comparison, the "running over the forest" scheme turns out to be more economical than "chopping through the forest" scheme and can save up to 10.
以三峡至上海±500kV输电线路工程在湖北境内线路(鄂2标段)为实例,通过对过林区砍、跨方案技术经济比较,跨树方案所需砍伐费和植被恢复费较少,与砍树方案相比仍有一定经济性,线路可节省投资约1039万元,同时线路在经过林区时采用跨树方案,对森林保护、生态环境保护都有积极的意义,因此跨树方案不仅有较好的经济性,同时还有着显著的社会效益。
补充资料：葛洲坝—上海±500kV直流输电工程
葛洲坝—上海±500kV直流输电工程
Gezhouba-Shanghai±500k V Direct Current Transmission Project
葛洲坝一上海士SOOkv直流输电工程(Gezhouba一Shanghai士SOOkV Direet Cur-rent Transmission Project)中国第一个大容量、长距离超高压直流输电系统。其线路西起葛洲坝水电站的宋家坝变电所，东至华东电力系统上海市南桥换流站(见彩图插页31页)。线路全长1 046k。，输电电压土5。。kv，输送功率120方kw。线路由中国设计和施工，换流站设备由国外引进。线路第一极(极工) 逆变站(南桥)溉李渔思冷笋国┌──┬─┐┌─┬─┐│一艺│3 ││压│石│└──┴─┘└─┴─┘┌──┬─┐ │一艺│么│┌─┬─┐│ │ ││又│夕│└──┴─┘└─┴─┘┌──┬─┐ │乙 │飞│┌─┬─┐└──┴─┘│压│巨│ └─┴─┘┌──┬─┐ │乙 │玉│┌─┬─┐└──┴─┘│叮│己│ └─┴─┘ 葛一上线两端直流输电系统示意 1.6脉冲换流器2.换流变压器3.平波电抗器4.直流滤波器5.交流滤波器6.无功补偿电容器双极华东每侧双避工况系统V超地放类试哥)于扮89年5月调试，9月正式投人运行。极五希于199。年8月投运，葛一上线是华中电力系统泪电力系统间的强大联络线。线路采用拉线式铁塔支撑一极导线。导线采用4分裂导线束，塔顶采月雷线保护。当因故障或一侧停电检修时，单极运衣的输送功率为6。万kw。葛一上线两端直流输庄示意如图。 葛一上线调试过程中进行了中国首次士5001高压直流输电线路现场接地故障试验，强大的刘电电孤见彩图插页第32页。世界各国至今未见追验报道口〔林华咨朱家“
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条