期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
TD-SCDMA基站的防雷接地
1
作者 石彦宏 陈敏 《黑龙江科技信息》 2008年第30期54-54,共1页
TD-SCDMA基站天馈系统的雷电防护与以往2G基站明显不同,出现了一些新情况、新问题。从基站天馈系统的防雷保护、基站接地网与接地系统、设备接地及接地线、进站动力电缆的防护等几个方面给出合理可行的防护措施。
关键词 雷电防护措施 基站地网 设备接地 接地线
下载PDF
Feasibility Ananlysis of Building Pithead Power Plants in North Shaanxi and Ningxia Coal Bases
2
《Electricity》 2003年第4期11-15,共5页
North Shaanxi and Ningxia are extremely abundant in coal resources, with excellent geographical positions and transport facilities, suitable to build large size pithead power plants. This paper details the coal resour... North Shaanxi and Ningxia are extremely abundant in coal resources, with excellent geographical positions and transport facilities, suitable to build large size pithead power plants. This paper details the coal resources in North Shaanxi Province and Ningxia Autonomous Region, fuel coal and transportation conditions for building large size pithead power plants, and carries out the analyses of economic benefits and electricity prices of bidding for access to grid for the six recommended power plants. The analyses show that these power plants, after built up, will have strong competitive powers and make contributions for the sustainable development of power industry in North China and Shandong Province. 展开更多
关键词 coal bases pithead power plant economic benefit electricity price of bidding for access to grid FEASIBILITY
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部