摘要
介绍了±800某换流站的直流滤波器保护配置。通过分析某次直流滤波器电容器C1不平衡保护动作事件,发现了电容器C1不平衡保护整定值与故障录波分析定值存在不一致,会干扰分析人员对保护动作正确性判断的问题。同时,通过对某次直流滤波器C1电容器低压侧主接线断线,但保护长时间未动作事件进行了分析,发现现有直流滤波器保护配置不全面,不能有效判别直流滤波器主接线断线故障的问题。针对以上问题提出了优化措施,一是对电容器C1不平衡保护逻辑及定值进行优化,实现了保护定值与故障录波分析定值的统一;二是增加直流滤波器主接线断线保护,可有效判断直流滤波器主接线断线故障。
The DC filter protection configuration for±800 certain converter station is introduced in this pa?per.It is found through analyzing an event of unbalance protection action of DC filter capacitor C1that the unbalance protection setting value of capacitor C1is inconsistent with the protection setting value used in the fault recording analysis,which will interfere analyst’s judgments on the correctness of protection action At the same time,it is also found through the analysis of no operation for a long time with disconnection of main wiring of the low?voltage side of the DC filter C1capacitor that the existing DC filter protection configuration is incomplete,and the problem of the main wiring disconnection of the DC filter could not be distinguished effectively.In response to above problems,some optimization measures are proposed.One of them is to optimize the capacitor C1unbalance protection logic and setting value to achieve the unification of the protection setting value and the fault recording analysis setting value.The other is to increase main wiring disconnection protection of DC filter,which can effectively judge the main wiring disconnection of DC filter.
作者
龙建华
李果明
刘茂涛
崔华栋
王彬
姚言超
LONG Jianhua;LI Guoming;LIU Maotao;CUI Huadong;WANG Bin;YAO Yanchao(Guangzhou Bureau,EHV Power Transmission Company,CSC,Guangzhou 510663,China)
出处
《电力电容器与无功补偿》
2023年第1期1-5,共5页
Power Capacitor & Reactive Power Compensation
关键词
特高压
直流滤波器保护
保护定值
保护配置
优化
UHVDC
DC filter protection
setting value of protection
protection configuration
optimization
