电力系统保护与控制2017，Vol.45Issue(2)：140-146,7.DOI:10.7667/PSPC160087
宾金特高压直流换相失败保护的研究
Study of Bin-Jin UHVDC project commutation failures protection
许朋见 1黄金海 1许静静 1付艳 1范子强 1周晓风1
作者信息
- 1. 许继电气股份有限公司,河南许昌461000
- 折叠
摘要
Abstract
With the increase of the UHVDC capacity,the power fluctuations caused by commutation failures become more serious and probably induce out of step of AC grid which becomes an important external constraint condition of the commutation failure protection.This paper gets the ability of AC power grid to bear the number of DC power dropping and the fault duration time caused by commutation failures through DC commutation failure analysis firstly.Then the principle,criterion and action strategy of original commutation failure protection are introduced.Against the continuous commutation failures not meeting AC system tolerance capacity,an optimal scheme that adds double-pole commutation failure acceleration protection is proposed and the protection criterion,logic time sequence,setting values delay,and action strategy are given.Finally,the relevant software program of the proposed protection is written,and simulation experiments are done on the control and protection platform in line with real engineering which confirms the feasibility and reliability of the new scheme.The optimization scheme has been applied in the UHVDC transmission project from Yibin to Jinhua successfully.关键词
特高压直流/连续换相失败/双极换相失败保护/交流系统/冲击Key words
UHVDC/continuous commutation failure/double pole commutation failure protection/AC system/shock引用本文复制引用
许朋见,黄金海,许静静,付艳,范子强,周晓风..宾金特高压直流换相失败保护的研究[J].电力系统保护与控制,2017,45(2):140-146,7.
