摘要
鉴于1000MW汽轮发电机组在电力系统中的重要地位,决不能简单照搬或沿用300MW及600MW汽轮发电机组的主保护配置方案。文中提出了2种新型中性点引出方式及主保护方案的配置,经对东方电机股份有限公司1000MW汽轮发电机内部短路故障进行分析计算,发现其保护性能均优于传统的发电机中性点引出方式及主保护配置方案。为了降低技改难度并积累工程经验,应首先选择汽轮发电机按照新型中性点引出方式2进行技改,以确保大型汽轮发电机组的安全运行;但该方案仍需电机制造和运行部门予以高度重视和支持,才能最终实现。
According to the important position of 1 000 MW turbine generator trait in power system, the disposition scheme of main protection for 300 MW and 600 MW turbine generator traits can not be simply used or copied for 1 000 MW turbine generator trait. The paper put forward 2 kinds of new disposition scheme for neutral lead mode and main protection. Through the analysis and calculation made by Dongfang Generator Inc. for internal short circuit calculation of 1 000 MW, it was found that the protection function of new disposition scheme for neutral lead mode and main protection can be better than that of traditional one. To reduce the difficulty of retrofit and to accumulate the project experience, the new neutral lead mode for the retrofit of turbine generator should be firstly selected to ensure the safe operation of large turbine generator. But this scheme still needs to he paid more attention and the support from generator manufacturer and operation departments to realize it eventually.
出处
《电力设备》
2008年第1期1-4,共4页
Electrical Equipment
关键词
大型汽轮发电机
内部短路计算
中性点引出方式
主保护
继电保护
large turbine generator
internal short circuit calculation
neutral lead mode
main protection
relay protection
