黄德线退役后凤滩水电厂送出方案研究

Research on transmission scheme after retirement of Huangde transmission lines for Fengtan Hydropower Station

位于怀化西北部的凤滩水电厂是湖南电网的主力电厂之一,其220 kV送出线路黄秧坪—德山运行年代久远,存在较大安全隐患需要退出运行。结合凤滩水电厂的地理位置、周边电网网络状况及负荷特性,以2014年作为计算水平年对黄德线退役后是否需要加强系统网络以及如何加强进行系统论证研究,提出3种网络加强方案,并通过对3种方案的技术经济性比较推荐方案2,即新建黄秧坪—永顺220 kV线路作为黄德线退役后凤滩水电厂送出方案,并对黄桃线退役推荐方案是否能适应黄桃退役后凤滩送出需要进行适应性研究。

As one of the main stations of Hunan power grid,Fengtan Hydropower Station is located in the northwest of Huaihua.The 220kV Huangyangping to Deshan transmission lines has been running for thirty-one years,which need to retire due to many hidden troubles in operation.Considering the location of Fengtan Hydropower Station,the surrounding network condition and load characteristic location,it is researched systematically that whether the system network needs to be strengthened or not and how to strengthen it after retirement of Huangde line.Three kinds of program are put forward and the second scheme is recommend that operation of newly builded Huangyangping to Yongshun 220kV line is transmission scheme after Huangde line retirement by comparing technical economy of three schemes.It is also studied whether the recommended scheme is able to meet the need of power transmission for Fengtan Hydropower Station after Huangtao line retirement.